!3116 [MD]Add sentencepiece Vocab and Tokenizer

Merge pull request !3116 from xulei/sentence_piece0715

cmake/external_libs/sentencepiece.cmake

@@ -0,0 +1,25 @@
+if (WIN32)
+        set(sentencepiece_CXXFLAGS "-D_FORTIFY_SOURCE=2 -O2 -Wno-unused-result -Wno-stringop-overflow -Wno-format-extra-args -Wno-format")
+        set(sentencepiece_CFLAGS "-D_FORTIFY_SOURCE=2 -O2")
+        mindspore_add_pkg(sentencepiece
+                VER 0.1.92
+                LIBS sentencepiece sentencepiece_train
+                URL https://github.com/google/sentencepiece/archive/v0.1.92.tar.gz
+                CMAKE_OPTION -DCMAKE_BUILD_TYPE=Release -DSPM_USE_BUILTIN_PROTOBUF=ON
+                MD5 5dfd2241914b5598a68b2a8542ed8e91
+                )
+else ()
+       set(sentencepiece_CXXFLAGS "-D_FORTIFY_SOURCE=2 -O2 -Wno-unused-result -Wno-sign-compare")
+       set(sentencepiece_CFLAGS "-D_FORTIFY_SOURCE=2 -O2")
+       mindspore_add_pkg(sentencepiece
+                VER 0.1.92
+                LIBS sentencepiece sentencepiece_train
+                URL https://github.com/google/sentencepiece/archive/v0.1.92.tar.gz
+                CMAKE_OPTION -DCMAKE_BUILD_TYPE=Release -DSPM_USE_BUILTIN_PROTOBUF=OFF -DSPM_ENABLE_SHARED=OFF  -DPROTOBUF_INC=${protobuf_INC}
+                MD5 5dfd2241914b5598a68b2a8542ed8e91
+                PATCHES ${CMAKE_SOURCE_DIR}/third_party/patch/sentencepiece/sentencepiece.patch001
+                )
+endif ()
+include_directories(${sentencepiece_INC})
+add_library(mindspore::sentencepiece ALIAS sentencepiece::sentencepiece)
+add_library(mindspore::sentencepiece_train ALIAS sentencepiece::sentencepiece_train)

cmake/mind_expression.cmake

@@ -75,6 +75,7 @@ if (ENABLE_MINDDATA)
     include(${CMAKE_SOURCE_DIR}/cmake/external_libs/sqlite.cmake)
     include(${CMAKE_SOURCE_DIR}/cmake/external_libs/tinyxml2.cmake)
     include(${CMAKE_SOURCE_DIR}/cmake/external_libs/cppjieba.cmake)
+    include(${CMAKE_SOURCE_DIR}/cmake/external_libs/sentencepiece.cmake)
 endif()
 
 include(${CMAKE_SOURCE_DIR}/cmake/external_libs/gtest.cmake)

cmake/package.cmake

@@ -40,6 +40,7 @@ if (CMAKE_SYSTEM_NAME MATCHES "Windows")
     set(jpeg_turbo_LIBPATH ${jpeg_turbo_LIBPATH}/../bin/)
     set(sqlite_LIBPATH ${sqlite_LIBPATH}/../bin/)
     set(tinyxml2_LIBPATH ${tinyxml2_LIBPATH}/../bin/)
+    set(sentencepiece_LIBPATH ${sentencepiece_LIBPATH}/../bin/)
 else ()
     set(INSTALL_LIB_DIR "lib")
 endif ()
@@ -91,6 +92,14 @@ if (ENABLE_MINDDATA)
         DESTINATION ${INSTALL_LIB_DIR}
         COMPONENT mindspore
     )
+    file(GLOB_RECURSE SENTENCEPIECE_LIB_LIST
+        ${sentencepiece_LIBPATH}/libsentencepiece*
+    )
+    install(
+    FILES ${SENTENCEPIECE_LIB_LIST}
+        DESTINATION ${INSTALL_LIB_DIR}
+        COMPONENT mindspore
+    )
     if (CMAKE_SYSTEM_NAME MATCHES "Windows")
         message("icu4c does not support windows system temporarily")
     else()

mindspore/ccsrc/minddata/dataset/CMakeLists.txt

@@ -128,7 +128,7 @@ else()
     target_link_libraries(_c_dataengine PRIVATE mindspore::pybind11_module -ldl mindspore::protobuf ${SECUREC_LIBRARY})
 endif()
 target_link_libraries(_c_dataengine PUBLIC mindspore::jpeg_turbo mindspore::opencv_core mindspore::opencv_imgcodecs
-        mindspore::opencv_imgproc mindspore::tinyxml2  ${ICU_LIB})
+        mindspore::opencv_imgproc mindspore::tinyxml2 mindspore::sentencepiece mindspore::sentencepiece_train ${ICU_LIB})
 if (ENABLE_GPUQUE)
     target_link_libraries(_c_dataengine PRIVATE gpu_queue
                                      ${CUDNN_PATH}/lib64/libcudnn.so

mindspore/ccsrc/minddata/dataset/api/de_pipeline.cc

@@ -87,7 +87,8 @@ static std::unordered_map<uint32_t, pFunction> g_parse_op_func_ = {
   {kTextFile, &DEPipeline::ParseTextFileOp},
   {kBuildVocab, &DEPipeline::ParseBuildVocabOp},
   {kClue, &DEPipeline::ParseClueOp},
-  {kEpochCtrl, &DEPipeline::ParseEpochCtrlOp}};
+  {kEpochCtrl, &DEPipeline::ParseEpochCtrlOp},
+  {kSentencePieceVocab, &DEPipeline::ParseBuildSentencePieceVocabOp}};
 
 DEPipeline::DEPipeline() : iterator_(nullptr) {
   try {
@@ -1710,6 +1711,41 @@ Status DEPipeline::ParseBuildVocabOp(const py::dict &args, std::shared_ptr<Datas
   return Status::OK();
 }
 
+Status DEPipeline::ParseBuildSentencePieceVocabOp(const py::dict &args, std::shared_ptr<DatasetOp> *top,
+                                                  std::shared_ptr<DatasetOp> *bottom) {
+  std::shared_ptr<BuildSentencePieceVocabOp::Builder> builder = std::make_shared<BuildSentencePieceVocabOp::Builder>();
+  for (auto arg : args) {
+    std::string key = py::str(arg.first);
+    py::handle value = arg.second;
+    if (!value.is_none()) {
+      if (key == "vocab_size") {
+        builder->SetVocabSize(ToInt(value));
+      } else if (key == "character_coverage") {
+        (void)builder->SetCharacterCoverage(ToFloat(value));
+      } else if (key == "params") {
+        std::unordered_map<std::string, std::string> params;
+        for (auto param : py::reinterpret_borrow<py::dict>(value)) {
+          std::string param_key = py::reinterpret_borrow<py::str>(param.first);
+          if (param_key == "input" || param_key == "vocab_size" || param_key == "model_prefix" ||
+              param_key == "character_coverage" || param_key == "model_type") {
+            continue;
+          }
+          params[param_key] = py::reinterpret_borrow<py::str>(param.second);
+        }
+        (void)builder->SetParams(params);
+      } else if (key == "vocab") {
+        (void)builder->SetVocab(value.cast<std::shared_ptr<SentencePieceVocab>>());
+      } else if (key == "model_type") {
+        (void)builder->SetModelType(value.cast<SentencePieceModel>());
+      }
+    }
+  }
+  std::shared_ptr<BuildSentencePieceVocabOp> op;
+  RETURN_IF_NOT_OK(builder->Build(&op));
+  *top = op;
+  return Status::OK();
+}
+
 Status DEPipeline::ParseClueOp(const py::dict &args, std::shared_ptr<DatasetOp> *top,
                                std::shared_ptr<DatasetOp> *bottom) {
   std::vector<std::string> files_list;

mindspore/ccsrc/minddata/dataset/api/de_pipeline.h

@@ -71,7 +71,8 @@ enum OpName {
   kTextFile,
   kBuildVocab,
   kClue,
-  kEpochCtrl
+  kEpochCtrl,
+  kSentencePieceVocab,
 };
 
 // The C++ binder class that we expose to the python script.
@@ -195,6 +196,8 @@ class DEPipeline {
   Status ParseBuildVocabOp(const py::dict &args, std::shared_ptr<DatasetOp> *top, std::shared_ptr<DatasetOp> *bottom);
 
   Status StopSend();
+  Status ParseBuildSentencePieceVocabOp(const py::dict &args, std::shared_ptr<DatasetOp> *top,
+                                        std::shared_ptr<DatasetOp> *bottom);
 
   Status ParseClueOp(const py::dict &args, std::shared_ptr<DatasetOp> *top, std::shared_ptr<DatasetOp> *bottom);
 

mindspore/ccsrc/minddata/dataset/api/python_bindings.cc

@@ -88,7 +88,9 @@
 #include "minddata/dataset/text/kernels/to_number_op.h"
 #include "minddata/dataset/text/kernels/unicode_char_tokenizer_op.h"
 #include "minddata/dataset/text/kernels/wordpiece_tokenizer_op.h"
+#include "minddata/dataset/text/kernels/sentence_piece_tokenizer_op.h"
 #include "minddata/dataset/text/vocab.h"
+#include "minddata/dataset/text/sentence_piece_vocab.h"
 #include "minddata/dataset/util/random.h"
 #include "minddata/mindrecord/include/shard_distributed_sample.h"
 #include "minddata/mindrecord/include/shard_operator.h"
@@ -684,6 +686,15 @@ void bindTokenizerOps(py::module *m) {
   (void)py::class_<SlidingWindowOp, TensorOp, std::shared_ptr<SlidingWindowOp>>(
     *m, "SlidingWindowOp", "TensorOp to apply sliding window to a 1-D Tensor.")
     .def(py::init<uint32_t, int32_t>(), py::arg("width"), py::arg("axis"));
+  (void)py::class_<SentencePieceTokenizerOp, TensorOp, std::shared_ptr<SentencePieceTokenizerOp>>(
+    *m, "SentencePieceTokenizerOp", "Tokenize scalar token or 1-D tokens to  tokens by sentence piece.")
+    .def(py::init<std::shared_ptr<SentencePieceVocab> &, const SPieceTokenizerLoadType, const SPieceTokenizerOutType>(),
+         py::arg("vocab"), py::arg("load_type") = SPieceTokenizerLoadType::kModel,
+         py::arg("out_type") = SPieceTokenizerOutType::kString)
+    .def(
+      py::init<const std::string &, const std::string &, const SPieceTokenizerLoadType, const SPieceTokenizerOutType>(),
+      py::arg("model_path"), py::arg("model_filename"), py::arg("load_type") = SPieceTokenizerLoadType::kFile,
+      py::arg("out_type") = SPieceTokenizerOutType::kString);
 }
 
 void bindDependIcuTokenizerOps(py::module *m) {
@@ -839,6 +850,33 @@ void bindVocabObjects(py::module *m) {
       THROW_IF_ERROR(Vocab::BuildFromPyDict(words, &v));
       return v;
     });
+  (void)py::class_<SentencePieceVocab, std::shared_ptr<SentencePieceVocab>>(*m, "SentencePieceVocab")
+    .def(py::init<>())
+    .def_static("from_file",
+                [](const py::list &paths, const int vocab_size, const float character_coverage,
+                   const SentencePieceModel model_type, const py::dict &params) {
+                  std::shared_ptr<SentencePieceVocab> v;
+                  std::vector<std::string> path_list;
+                  for (auto path : paths) {
+                    path_list.emplace_back(py::str(path));
+                  }
+                  std::unordered_map<std::string, std::string> param_map;
+                  for (auto param : params) {
+                    std::string key = py::reinterpret_borrow<py::str>(param.first);
+                    if (key == "input" || key == "vocab_size" || key == "model_prefix" || key == "character_coverage" ||
+                        key == "model_type") {
+                      continue;
+                    }
+                    param_map[key] = py::reinterpret_borrow<py::str>(param.second);
+                  }
+                  THROW_IF_ERROR(SentencePieceVocab::BuildFromFile(path_list, vocab_size, character_coverage,
+                                                                   model_type, param_map, &v));
+                  return v;
+                })
+    .def_static("save_model",
+                [](const std::shared_ptr<SentencePieceVocab> *vocab, std::string path, std::string filename) {
+                  THROW_IF_ERROR(SentencePieceVocab::SaveModel(vocab, path, filename));
+                });
 }
 
 void bindGraphData(py::module *m) {
@@ -998,6 +1036,7 @@ PYBIND11_MODULE(_c_dataengine, m) {
     .value("CIFAR100", OpName::kCifar100)
     .value("RANDOMDATA", OpName::kRandomData)
     .value("BUILDVOCAB", OpName::kBuildVocab)
+    .value("SENTENCEPIECEVOCAB", OpName::kSentencePieceVocab)
     .value("CELEBA", OpName::kCelebA)
     .value("TEXTFILE", OpName::kTextFile)
     .value("CLUE", OpName::kClue)
@@ -1032,6 +1071,24 @@ PYBIND11_MODULE(_c_dataengine, m) {
     .value("DE_BORDER_REFLECT", BorderType::kReflect)
     .value("DE_BORDER_SYMMETRIC", BorderType::kSymmetric)
     .export_values();
+
+  (void)py::enum_<SentencePieceModel>(m, "SentencePieceModel", py::arithmetic())
+    .value("DE_SENTENCE_PIECE_UNIGRAM", SentencePieceModel::kUnigram)
+    .value("DE_SENTENCE_PIECE_BPE", SentencePieceModel::kBpe)
+    .value("DE_SENTENCE_PIECE_CHAR", SentencePieceModel::kChar)
+    .value("DE_SENTENCE_PIECE_WORD", SentencePieceModel::kWord)
+    .export_values();
+
+  (void)py::enum_<SPieceTokenizerOutType>(m, "SPieceTokenizerOutType", py::arithmetic())
+    .value("DE_SPIECE_TOKENIZER_OUTTYPE_KString", SPieceTokenizerOutType::kString)
+    .value("DE_SPIECE_TOKENIZER_OUTTYPE_KINT", SPieceTokenizerOutType::kInt)
+    .export_values();
+
+  (void)py::enum_<SPieceTokenizerLoadType>(m, "SPieceTokenizerLoadType", py::arithmetic())
+    .value("DE_SPIECE_TOKENIZER_LOAD_KFILE", SPieceTokenizerLoadType::kFile)
+    .value("DE_SPIECE_TOKENIZER_LOAD_KMODEL", SPieceTokenizerLoadType::kModel)
+    .export_values();
+
   bindDEPipeline(&m);
   bindTensor(&m);
   bindTensorOps1(&m);

mindspore/ccsrc/minddata/dataset/core/client.h

@@ -33,6 +33,7 @@
 #include "minddata/dataset/engine/datasetops/filter_op.h"
 #include "minddata/dataset/engine/datasetops/source/generator_op.h"
 #include "minddata/dataset/engine/datasetops/build_vocab_op.h"
+#include "minddata/dataset/engine/datasetops/build_sentence_piece_vocab_op.h"
 #endif
 
 #include "minddata/dataset/engine/datasetops/batch_op.h"

mindspore/ccsrc/minddata/dataset/engine/datasetops/CMakeLists.txt

@@ -32,6 +32,7 @@ if (ENABLE_PYTHON)
         barrier_op.cc
         filter_op.cc
         build_vocab_op.cc
+        build_sentence_piece_vocab_op.cc
         )
 endif()
 

mindspore/ccsrc/minddata/dataset/engine/datasetops/build_sentence_piece_vocab_op.cc

@@ -0,0 +1,193 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "minddata/dataset/engine/datasetops/build_sentence_piece_vocab_op.h"
+
+#include <iomanip>
+#include "minddata/dataset/core/config_manager.h"
+#include "minddata/dataset/engine/opt/pass.h"
+
+namespace mindspore {
+namespace dataset {
+BuildSentencePieceVocabOp::BuildSentencePieceVocabOp(std::shared_ptr<SentencePieceVocab> vocab,
+                                                     std::vector<std::string> col_names, uint32_t vocab_size,
+                                                     float character_coverage, SentencePieceModel model_type,
+                                                     const std::unordered_map<std::string, std::string> &params,
+                                                     int32_t op_conn_size)
+    : PipelineOp(op_conn_size),
+      vocab_size_(vocab_size),
+      vocab_(vocab),
+      col_names_(col_names),
+      character_coverage_(character_coverage),
+      model_type_(model_type),
+      params_(params),
+      col_id_(0) {
+  sentence_queue_ = std::make_unique<Queue<TensorRow>>(op_conn_size);
+  read_done_ = false;
+  ret_status_ = Status::OK();
+}
+
+Status BuildSentencePieceVocabOp::operator()() {
+  RETURN_UNEXPECTED_IF_NULL(tree_);
+  RETURN_IF_NOT_OK(sentence_queue_->Register(tree_->AllTasks()));
+  RETURN_IF_NOT_OK(
+    tree_->AllTasks()->CreateAsyncTask("sentenceTask", std::bind(&BuildSentencePieceVocabOp::SentenceThread, this)));
+  TaskManager::FindMe()->Post();
+  child_iterator_ = std::make_unique<ChildIterator>(this, 0, 0);
+  TensorRow new_row;
+  RETURN_IF_NOT_OK(child_iterator_->FetchNextTensorRow(&new_row));
+
+  bool eoe_warning = false;  // give out warning if receive more than 1 eoe
+  while (child_iterator_->eof_handled() == false) {
+    while (new_row.empty() == false) {
+      RETURN_IF_NOT_OK(sentence_queue_->EmplaceBack(new_row));
+      RETURN_IF_NOT_OK(child_iterator_->FetchNextTensorRow(&new_row));
+    }
+    CHECK_FAIL_RETURN_UNEXPECTED(!eoe_warning, "no op should be after from_dataset (repeat detected)");
+    eoe_warning = true;
+  }
+  // add empty tensorRow for quit
+  TensorRow empty_row = {};
+  sentence_queue_->EmplaceBack(empty_row);
+  return Status::OK();
+}
+
+Status BuildSentencePieceVocabOp::SentenceThread() {
+  TaskManager::FindMe()->Post();
+  if (col_names_.empty() == true) {
+    auto itr = column_name_id_map_.find("text");
+    CHECK_FAIL_RETURN_UNEXPECTED(itr != column_name_id_map_.end(),
+                                 "'text' column doesn't exist when column name is empty");
+    col_id_ = itr->second;
+  } else {
+    auto itr = column_name_id_map_.find(col_names_[0]);
+    CHECK_FAIL_RETURN_UNEXPECTED(itr != column_name_id_map_.end(), col_names_[0] + "column doesn't exist");
+    col_id_ = itr->second;
+  }
+  std::unique_ptr<DatasetSentenceIterator> sentence_iter = std::make_unique<DatasetSentenceIterator>(this);
+  std::string model_proto;
+  sentencepiece::util::Status s_status =
+    sentencepiece::SentencePieceTrainer::Train(BuildParams(), sentence_iter.get(), &model_proto);
+  if (!s_status.ok()) {
+    return Status(StatusCode::kUnexpectedError, __LINE__, __FILE__, s_status.message());
+  } else {
+    if (vocab_ == nullptr) {
+      return Status(StatusCode::kUnexpectedError, __LINE__, __FILE__, "sentencepiece vocab ptr must not be nullptr");
+    }
+    vocab_->set_model_proto(model_proto);
+  }
+  RETURN_IF_NOT_OK(out_connector_->Add(0, std::make_unique<DataBuffer>(0, DataBuffer::kDeBFlagEOE)));
+  RETURN_IF_NOT_OK(out_connector_->Add(0, std::make_unique<DataBuffer>(0, DataBuffer::kDeBFlagEOF)));
+  return Status::OK();
+}
+
+std::unordered_map<std::string, std::string> BuildSentencePieceVocabOp::BuildParams() {
+  std::unordered_map<std::string, std::string> ret_params;
+  ret_params["vocab_size"] = std::to_string(vocab_size_);
+  ret_params["character_coverage"] = std::to_string(character_coverage_);
+  if (model_type_ == SentencePieceModel::kBpe) {
+    ret_params["model_type"] = "BPE";
+  } else if (model_type_ == SentencePieceModel::kChar) {
+    ret_params["model_type"] = "CHAR";
+  } else if (model_type_ == SentencePieceModel::kWord) {
+    ret_params["model_type"] = "WORD";
+  } else {
+    ret_params["model_type"] = "UNIGRAM";
+  }
+  // filter some params that set by function param
+  // filter  model_prefix that must be empty
+  for (auto param : params_) {
+    std::string key = param.first;
+    if (key == "input" || key == "vocab_size" || key == "model_prefix" || key == "character_coverage" ||
+        key == "model_type") {
+      continue;
+    }
+    ret_params[key] = param.second;
+  }
+
+  ret_params["model_prefix"] = "";
+  ret_params["minloglevel"] = "1";
+  return ret_params;
+}
+
+bool BuildSentencePieceVocabOp::Done() { return read_done_; }
+
+void BuildSentencePieceVocabOp::Next(std::string *sentence) {
+  TensorRow new_row;
+  Status s = sentence_queue_->PopFront(&new_row);
+
+  if (s.IsError()) {
+    read_done_ = true;
+    ret_status_ = s;
+    return;
+  }
+  if (new_row.empty() == true) {
+    read_done_ = true;
+    ret_status_ = Status::OK();
+    return;
+  }
+
+  if (new_row[col_id_]->type().IsNumeric() || new_row[col_id_]->Rank() > 1) {
+    ret_status_ = Status(StatusCode::kUnexpectedError, __LINE__, __FILE__,
+                         "for dataset only words on string columns or must bu scalar");
+    read_done_ = true;
+    return;
+  }
+
+  std::string_view sentence_v;
+  new_row[col_id_]->GetItemAt(&sentence_v, {});
+
+  std::string st{sentence_v};
+  *sentence = st;
+  ret_status_ = Status::OK();
+}
+
+// Pre-Visitor accept method for NodePass
+Status BuildSentencePieceVocabOp::PreAccept(NodePass *p, bool *modified) {
+  // Downcast shared pointer then call the pre-visitation
+  return p->PreRunOnNode(shared_from_base<BuildSentencePieceVocabOp>(), modified);
+}
+
+Status BuildSentencePieceVocabOp::Builder::Build(std::shared_ptr<BuildSentencePieceVocabOp> *op) {
+  (*op) = std::make_shared<BuildSentencePieceVocabOp>(builder_vocab_, builder_col_names_, builder_vocab_size_,
+                                                      builder_character_coverage_, builder_model_type_, builder_params_,
+                                                      builder_connector_size_);
+  return Status::OK();
+}
+
+BuildSentencePieceVocabOp::Builder::Builder() {
+  std::shared_ptr<ConfigManager> cfg = GlobalContext::config_manager();
+  builder_connector_size_ = cfg->op_connector_size();
+}
+
+BuildSentencePieceVocabOp::DatasetSentenceIterator::DatasetSentenceIterator(BuildSentencePieceVocabOp *s_p_vocab_ptr)
+    : s_p_vocab_ptr_(s_p_vocab_ptr) {}
+
+bool BuildSentencePieceVocabOp::DatasetSentenceIterator::done() const {
+  if (s_p_vocab_ptr_ == nullptr) {
+    return true;
+  }
+  return s_p_vocab_ptr_->Done();
+}
+
+void BuildSentencePieceVocabOp::DatasetSentenceIterator::Next() {
+  if (s_p_vocab_ptr_ == nullptr) {
+    return;
+  }
+  s_p_vocab_ptr_->Next(&value_);
+}
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/engine/datasetops/build_sentence_piece_vocab_op.h

@@ -0,0 +1,186 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DATASET_ENGINE_DATASETOPS_BUILD_SENTENCE_VOCAB_OP_H_
+#define DATASET_ENGINE_DATASETOPS_BUILD_SENTENCE_VOCAB_OP_H_
+
+#include <sentencepiece_trainer.h>
+#include <sentencepiece_processor.h>
+#include <vector>
+#include <memory>
+#include <unordered_map>
+#include <string>
+#include <utility>
+
+#include "minddata/dataset/core/tensor.h"
+#include "minddata/dataset/engine/dataset_iterator.h"
+#include "minddata/dataset/engine/datasetops/pipeline_op.h"
+#include "minddata/dataset/util/status.h"
+#include "minddata/dataset/util/queue.h"
+#include "minddata/dataset/text/sentence_piece_vocab.h"
+
+namespace mindspore {
+namespace dataset {
+namespace py = pybind11;
+
+class BuildSentencePieceVocabOp : public PipelineOp {
+ public:
+  class Builder {
+   public:
+    Builder();
+
+    // Destructor.
+    ~Builder() = default;
+
+    // Setter method
+    // @param uint32_t size
+    // @return Builder setter method returns reference to the builder.
+    Builder &SetOpConnectorSize(uint32_t size) {
+      builder_connector_size_ = size;
+      return *this;
+    }
+
+    // Setter method
+    // @param uint32_t size
+    // @return Builder & reference to builder class object
+    Builder &SetVocabSize(uint32_t size) {
+      builder_vocab_size_ = size;
+      return *this;
+    }
+
+    // Setter method
+    // @param float charactor corverage - to determine the minimum symbols
+    // @return Builder & reference to builder class object
+    Builder &SetCharacterCoverage(float character_coverage) {
+      builder_character_coverage_ = character_coverage;
+      return *this;
+    }
+
+    // Setter method
+    // @param SentencePieceModel model_type - model algorithm
+    // @return Builder & reference to builder class object
+    Builder &SetModelType(SentencePieceModel model_type) {
+      builder_model_type_ = model_type;
+      return *this;
+    }
+
+    // Setter method
+    // @param std::unordered_map<std::string, std::string> params
+    // @return Builder & reference to builder class object
+    Builder &SetParams(std::unordered_map<std::string, std::string> params) {
+      builder_params_ = params;
+      return *this;
+    }
+
+    // Setter method
+    // @param std::shared_ptr<SentencePieceVocab> vocab
+    // @return Builder & reference to builder class object
+    Builder &SetVocab(std::shared_ptr<SentencePieceVocab> vocab) {
+      builder_vocab_ = vocab;
+      return *this;
+    }
+
+    // set columns names
+    // @param const std::vector<std::string> & col_names - name of columns to get words
+    // @return Builder & reference to builder class object
+    Builder &SetColumnNames(const std::vector<std::string> &col_names) {
+      builder_col_names_ = col_names;
+      return *this;
+    }
+
+    // The builder "build" method creates the final object.
+    // @param std::shared_ptr<BuildVocabOp> *op - DatasetOp
+    // @return - The error code return
+    Status Build(std::shared_ptr<BuildSentencePieceVocabOp> *op);
+
+   private:
+    uint32_t builder_connector_size_;
+    uint32_t builder_vocab_size_;
+    float builder_character_coverage_;
+    SentencePieceModel builder_model_type_;
+    std::unordered_map<std::string, std::string> builder_params_;
+    std::vector<std::string> builder_col_names_;
+    std::shared_ptr<SentencePieceVocab> builder_vocab_;
+  };
+
+ public:
+  class DatasetSentenceIterator : public sentencepiece::SentenceIterator {
+   public:
+    explicit DatasetSentenceIterator(BuildSentencePieceVocabOp *s_p_vocab_ptr);
+    ~DatasetSentenceIterator() {}
+
+    bool done() const override;
+    void Next() override;
+    const std::string &value() const override { return value_; }
+    sentencepiece::util::Status status() const override { return sentencepiece::util::Status(); }
+
+   private:
+    std::string value_;
+    BuildSentencePieceVocabOp *s_p_vocab_ptr_;
+  };
+
+  BuildSentencePieceVocabOp(std::shared_ptr<SentencePieceVocab> vocab, std::vector<std::string> col_names,
+                            uint32_t vocab_size, float character_coverage, SentencePieceModel model_type,
+                            const std::unordered_map<std::string, std::string> &params, int32_t op_conn_size);
+
+  ~BuildSentencePieceVocabOp() = default;
+
+  // the thread for sentence train
+  Status SentenceThread();
+
+  Status EofReceived(int32_t) override { return Status::OK(); }
+
+  Status EoeReceived(int32_t) override { return Status::OK(); }
+
+  Status operator()() override;
+
+  // Getter
+  // @return the number of workers
+  int32_t num_producers() const override { return 1; }
+
+  // Getter
+  // @return the number of threads consuming from the previous Connector
+  int32_t num_consumers() const override { return 1; }
+
+  Status Reset() override { RETURN_STATUS_UNEXPECTED("Reset shouldn't be called in BuildSentencePieceVocabOp"); }
+
+  // build the input params for sentence api
+  std::unordered_map<std::string, std::string> BuildParams();
+
+  bool Done();
+  void Next(std::string *sentence);
+
+  /// \param[in] p The node to visit
+  /// \param[out] modified Indicator if the node was modified
+  /// \return Status of the node visit
+  Status PreAccept(NodePass *p, bool *modified) override;
+
+ private:
+  bool read_done_;
+  Status ret_status_;
+  uint32_t vocab_size_;
+  float character_coverage_;
+  SentencePieceModel model_type_;
+  std::unordered_map<std::string, std::string> params_;
+  std::shared_ptr<SentencePieceVocab> vocab_;
+  std::vector<std::string> col_names_;
+  uint32_t col_id_;
+  std::unique_ptr<ChildIterator> child_iterator_;     // child iterator for fetching TensorRows 1 by 1
+  std::unique_ptr<Queue<TensorRow>> sentence_queue_;  // master thread assigns each worker TensorRow via this
+};
+}  // namespace dataset
+}  // namespace mindspore
+#endif  // DATASET_ENGINE_DATASETOPS_BUILD_SENTENCE_VOCAB_OP_H_

mindspore/ccsrc/minddata/dataset/engine/opt/pass.cc

@@ -17,6 +17,7 @@
 #include "minddata/dataset/engine/opt/pass.h"
 #include "minddata/dataset/engine/datasetops/batch_op.h"
 #include "minddata/dataset/engine/datasetops/build_vocab_op.h"
+#include "minddata/dataset/engine/datasetops/build_sentence_piece_vocab_op.h"
 #include "minddata/dataset/engine/datasetops/cache_op.h"
 #include "minddata/dataset/engine/datasetops/cache_merge_op.h"
 #include "minddata/dataset/engine/datasetops/cache_lookup_op.h"
@@ -261,5 +262,10 @@ Status NodePass::PreRunOnNode(std::shared_ptr<BuildVocabOp> node, bool *modified
   // Fallback to base class visitor by default
   return PreRunOnNode(std::static_pointer_cast<DatasetOp>(node), modified);
 }
+
+Status NodePass::PreRunOnNode(std::shared_ptr<BuildSentencePieceVocabOp> node, bool *modified) {
+  // Fallback to base class visitor by default
+  return PreRunOnNode(std::static_pointer_cast<DatasetOp>(node), modified);
+}
 }  // namespace dataset
 }  // namespace mindspore

mindspore/ccsrc/minddata/dataset/engine/opt/pass.h

@@ -81,6 +81,8 @@ class EpochCtrlOp;
 
 class BuildVocabOp;
 
+class BuildSentencePieceVocabOp;
+
 // The base class Pass is the basic unit of tree transformation.
 // The actual implementation of the passes will be derived from here.
 class Pass : public std::enable_shared_from_this<Pass> {
@@ -206,6 +208,8 @@ class NodePass : public Pass {
 
   virtual Status PreRunOnNode(std::shared_ptr<BuildVocabOp> node, bool *modified);
 
+  virtual Status PreRunOnNode(std::shared_ptr<BuildSentencePieceVocabOp> node, bool *modified);
+
  private:
   // Helper function to perform DFS visit
   Status DFSNodeVisit(std::shared_ptr<DatasetOp> node, bool *modified);

mindspore/ccsrc/minddata/dataset/engine/opt/pre/injection_pass.cc

@@ -37,6 +37,16 @@ Status InjectionPass::InjectionFinder::PreRunOnNode(std::shared_ptr<BuildVocabOp
   }
 }
 
+// Performs finder work for BuildSentencePieceVocabOp that has special rules about epoch control injection
+Status InjectionPass::InjectionFinder::PreRunOnNode(std::shared_ptr<BuildSentencePieceVocabOp> node, bool *modified) {
+  if (injection_pass_) {
+    injection_pass_->epoch_ctrl_bypass_ = true;
+    return Status::OK();
+  } else {
+    RETURN_STATUS_UNEXPECTED("Missing outer injection pass object from inside InjectionFinder!");
+  }
+}
+
 // Temporary code to prevent the injection of epoch control when cache op is present
 // Remove this code in cache op phase 2
 Status InjectionPass::InjectionFinder::PreRunOnNode(std::shared_ptr<CacheOp> node, bool *modified) {

mindspore/ccsrc/minddata/dataset/engine/opt/pre/injection_pass.h

@@ -45,6 +45,12 @@ class InjectionPass : public TreePass {
     /// \return Status The error code return
     Status PreRunOnNode(std::shared_ptr<BuildVocabOp> node, bool *modified) override;
 
+    /// \brief Performs finder work for BuildSentencePieceVocabOp that has special rules about epoch control injection.
+    /// \param[in] node The node being visited
+    /// \param[inout] modified Indicator if the node was changed at all
+    /// \return Status The error code return
+    Status PreRunOnNode(std::shared_ptr<BuildSentencePieceVocabOp> node, bool *modified) override;
+
     /// \brief Temporary code to prevent the injection of epoch control when cache op is present.
     ///     Remove this code in cache op phase 2
     /// \param[in] node The node being visited

mindspore/ccsrc/minddata/dataset/kernels/tensor_op.h

@@ -136,6 +136,7 @@ constexpr char kRandomChoiceOp[] = "RandomChoiceOp";
 constexpr char kRandomApplyOp[] = "RandomApplyOp";
 constexpr char kComposeOp[] = "ComposeOp";
 constexpr char kRandomSelectSubpolicyOp[] = "RandomSelectSubpolicyOp";
+constexpr char kSentencepieceTokenizerOp[] = "SentencepieceTokenizerOp";
 
 // data
 constexpr char kConcatenateOp[] = "kConcatenateOp";

mindspore/ccsrc/minddata/dataset/text/CMakeLists.txt

@@ -4,6 +4,7 @@ file(GLOB _CURRENT_SRC_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} "*.cc")
 set_property(SOURCE ${_CURRENT_SRC_FILES} PROPERTY COMPILE_DEFINITIONS SUBMODULE_ID=mindspore::SubModuleId::SM_MD)
 add_library(text OBJECT
         vocab.cc
+        sentence_piece_vocab.cc
         )
 
 add_dependencies(text text-kernels)

mindspore/ccsrc/minddata/dataset/text/kernels/CMakeLists.txt

@@ -21,5 +21,6 @@ add_library(text-kernels OBJECT
         wordpiece_tokenizer_op.cc
         truncate_sequence_pair_op.cc
         to_number_op.cc
+        sentence_piece_tokenizer_op.cc
         ${ICU_DEPEND_FILES}
         )

mindspore/ccsrc/minddata/dataset/text/kernels/sentence_piece_tokenizer_op.cc

@@ -0,0 +1,99 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "minddata/dataset/text/kernels/sentence_piece_tokenizer_op.h"
+
+#include <memory>
+#include <vector>
+
+#include "common/utils.h"
+#include "minddata/dataset/util/path.h"
+
+namespace mindspore {
+namespace dataset {
+
+SentencePieceTokenizerOp::SentencePieceTokenizerOp(const std::shared_ptr<SentencePieceVocab> vocab,
+                                                   const SPieceTokenizerLoadType load_type,
+                                                   const SPieceTokenizerOutType out_type)
+    : vocab_(vocab), load_type_(load_type), out_type_(out_type) {}
+
+SentencePieceTokenizerOp::SentencePieceTokenizerOp(const std::string &model_path, const std::string &model_filename,
+                                                   const SPieceTokenizerLoadType load_type,
+                                                   const SPieceTokenizerOutType out_type)
+    : load_type_(load_type), out_type_(out_type) {
+  (void)GetModelRealPath(model_path, model_filename);
+}
+
+Status SentencePieceTokenizerOp::Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) {
+  IO_CHECK(input, output);
+  if (input->Rank() != 0 || input->type() != DataType::DE_STRING) {
+    RETURN_STATUS_UNEXPECTED("the input tensor should be scalar string tensor");
+  }
+
+  std::string_view sentence_v;
+  RETURN_IF_NOT_OK(input->GetItemAt(&sentence_v, {}));
+  std::string sentence{sentence_v};
+  if (load_type_ == SPieceTokenizerLoadType::kFile) {
+    auto status = processor_.Load(file_path_);
+    if (!status.ok()) {
+      RETURN_STATUS_UNEXPECTED("load sentence piece model failed.");
+    }
+  } else {
+    RETURN_UNEXPECTED_IF_NULL(vocab_);
+    auto status = processor_.LoadFromSerializedProto(vocab_.get()->model_proto());
+    if (!status.ok()) {
+      RETURN_STATUS_UNEXPECTED("sentence piece load model failed.");
+    }
+  }
+
+  if (out_type_ == SPieceTokenizerOutType::kString) {
+    std::vector<std::string> pieces;
+    auto status = processor_.Encode(sentence, &pieces);
+    if (!status.ok()) {
+      RETURN_STATUS_UNEXPECTED("sentence piece tokenizer error");
+    }
+    *output = std::make_unique<Tensor>(pieces, TensorShape({(dsize_t)pieces.size()}));
+  } else {
+    std::vector<int> ids;
+    auto status = processor_.Encode(sentence, &ids);
+    if (!status.ok()) {
+      RETURN_STATUS_UNEXPECTED("sentence piece tokenizer error");
+    }
+    RETURN_IF_NOT_OK(Tensor::CreateTensor(output, ids, TensorShape({(dsize_t)ids.size()})));
+  }
+  return Status::OK();
+}
+
+Status SentencePieceTokenizerOp::GetModelRealPath(const std::string &model_path, const std::string &filename) {
+  char real_path[PATH_MAX] = {0};
+  if (file_path_.size() >= PATH_MAX) {
+    RETURN_STATUS_UNEXPECTED("sentence piece model path is invalid.");
+  }
+#if defined(_WIN32) || defined(_WIN64)
+  if (_fullpath(real_path, common::SafeCStr(model_path), PATH_MAX) == nullptr) {
+    RETURN_STATUS_UNEXPECTED("sentence piece model path is invalid.");
+  }
+#else
+  if (realpath(common::SafeCStr(model_path), real_path) == nullptr) {
+    RETURN_STATUS_UNEXPECTED("sentence piece model path  is invalid.");
+  }
+#endif
+  std::string abs_path = real_path;
+  file_path_ = (Path(abs_path) / Path(filename)).toString();
+  return Status::OK();
+}
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/text/kernels/sentence_piece_tokenizer_op.h

@@ -0,0 +1,65 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DATASET_SENTENCE_PIECE_TOKENIZER_OP_H
+#define DATASET_SENTENCE_PIECE_TOKENIZER_OP_H
+
+#include <sentencepiece_processor.h>
+
+#include <string>
+#include <iostream>
+#include <memory>
+
+#include "minddata/dataset/kernels/tensor_op.h"
+#include "minddata/dataset/util/status.h"
+#include "minddata/dataset/text/sentence_piece_vocab.h"
+
+namespace mindspore {
+namespace dataset {
+enum class SPieceTokenizerOutType { kString = 0, kInt = 1 };
+enum class SPieceTokenizerLoadType { kFile = 0, kModel = 1 };
+
+class SentencePieceTokenizerOp : public TensorOp {
+ public:
+  SentencePieceTokenizerOp(const std::shared_ptr<SentencePieceVocab> vocab, SPieceTokenizerLoadType load_type,
+                           const SPieceTokenizerOutType out_type);
+
+  SentencePieceTokenizerOp(const std::string &model_path, const std::string &model_filename,
+                           const SPieceTokenizerLoadType load_type, const SPieceTokenizerOutType out_type);
+
+  ~SentencePieceTokenizerOp() override = default;
+
+  Status GetModelRealPath(const std::string &model_path, const std::string &filename);
+
+  void Print(std::ostream &out) const override {
+    out << "SentencePieceTokenizerOp out_type = " << out_type_ << " load_type = " << load_type_;
+  }
+
+  Status Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) override;
+
+  std::string Name() const override { return kSentencepieceTokenizerOp; }
+
+ protected:
+  SPieceTokenizerOutType out_type_;
+  std::shared_ptr<SentencePieceVocab> vocab_;
+  std::string file_path_;
+  SPieceTokenizerLoadType load_type_;
+  sentencepiece::SentencePieceProcessor processor_;
+};
+}  // namespace dataset
+}  // namespace mindspore
+
+#endif  // DATASET_SENTENCE_PIECE_TOKENIZER_OP_H

mindspore/ccsrc/minddata/dataset/text/sentence_piece_vocab.cc

@@ -0,0 +1,112 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "minddata/dataset/text/sentence_piece_vocab.h"
+
+#include <sentencepiece_trainer.h>
+#include <sentencepiece_processor.h>
+#include <fstream>
+
+#include "common/utils.h"
+#include "minddata/dataset/util/path.h"
+
+namespace mindspore {
+namespace dataset {
+
+SentencePieceVocab::SentencePieceVocab() : model_proto_("") {}
+
+Status SentencePieceVocab::BuildFromFile(const std::vector<std::string> &path_list, const int vocab_size,
+                                         const float character_coverage, const SentencePieceModel model_type,
+                                         const std::unordered_map<std::string, std::string> &params,
+                                         std::shared_ptr<SentencePieceVocab> *vocab) {
+  std::unordered_map<std::string, std::string> unorder_map;
+
+  // the input of sentence is comma separated string
+  std::string input_str = "";
+  for (auto path : path_list) {
+    input_str += path;
+    input_str += ",";
+  }
+  input_str.pop_back();
+  unorder_map["input"] = input_str;
+  unorder_map["vocab_size"] = std::to_string(vocab_size);
+  unorder_map["model_prefix"] = "";
+  unorder_map["minloglevel"] = "1";
+  unorder_map["character_coverage"] = std::to_string(character_coverage);
+  if (model_type == SentencePieceModel::kWord) {
+    unorder_map["model_type"] = "WORD";
+  } else if (model_type == SentencePieceModel::kBpe) {
+    unorder_map["model_type"] = "BPE";
+  } else if (model_type == SentencePieceModel::kChar) {
+    unorder_map["model_type"] = "CHAR";
+  } else {
+    unorder_map["model_type"] = "UNIGRAM";
+  }
+
+  // filter some params that set by function param
+  // filter  model_prefix that must be empty
+  for (auto param : params) {
+    std::string key = param.first;
+    if (key == "input" || key == "vocab_size" || key == "model_prefix" || key == "character_coverage" ||
+        key == "model_type") {
+      continue;
+    }
+    unorder_map[key] = param.second;
+  }
+
+  // set sentence lib's log
+  unorder_map["minloglevel"] = "1";
+  *vocab = std::make_shared<SentencePieceVocab>();
+  std::string model_proto;
+  sentencepiece::util::Status s_status = sentencepiece::SentencePieceTrainer::Train(unorder_map, nullptr, &model_proto);
+  if (!s_status.ok()) {
+    return Status(StatusCode::kUnexpectedError, __LINE__, __FILE__, s_status.message());
+  }
+  vocab->get()->set_model_proto(model_proto);
+
+  return Status::OK();
+}
+
+Status SentencePieceVocab::SaveModel(const std::shared_ptr<SentencePieceVocab> *vocab, std::string path,
+                                     std::string filename) {
+  char real_path[PATH_MAX] = {0};
+
+  if (path.size() >= PATH_MAX) {
+    RETURN_STATUS_UNEXPECTED("sentence model path is invalid.");
+  }
+#if defined(_WIN32) || defined(_WIN64)
+  if (_fullpath(real_path, common::SafeCStr(path), PATH_MAX) == nullptr) {
+    RETURN_STATUS_UNEXPECTED("sentence model path is invalid.");
+  }
+#else
+  if (realpath(common::SafeCStr(path), real_path) == nullptr) {
+    RETURN_STATUS_UNEXPECTED("sentence model path is invalid.");
+  }
+#endif
+
+  std::string abs_real_path = (Path(real_path) / Path(filename)).toString();
+  std::ofstream os_file(abs_real_path, std::ios::out);
+  (void)os_file.write(vocab->get()->model_proto().data(), vocab->get()->model_proto().size());
+  os_file.close();
+  return Status::OK();
+}
+
+const std::string &SentencePieceVocab::model_proto() { return model_proto_; }
+
+void SentencePieceVocab::set_model_proto(const std::string model_proto) { model_proto_ = model_proto; }
+
+}  // namespace dataset
+}  // namespace mindspore

mindspore/ccsrc/minddata/dataset/text/sentence_piece_vocab.h

@@ -0,0 +1,49 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DATASET_TEXT_SENTENCE_PIECE_VOCAB_H_
+#define DATASET_TEXT_SENTENCE_PIECE_VOCAB_H_
+
+#include <string>
+#include <memory>
+#include <vector>
+#include <unordered_map>
+#include "minddata/dataset/util/status.h"
+
+namespace mindspore {
+namespace dataset {
+enum class SentencePieceModel { kUnigram = 0, kBpe = 1, kChar = 2, kWord = 3 };
+class SentencePieceVocab {
+ public:
+  static Status BuildFromFile(const std::vector<std::string> &path_list, const int vocab_size,
+                              const float character_coverage, const SentencePieceModel model_type,
+                              const std::unordered_map<std::string, std::string> &params,
+                              std::shared_ptr<SentencePieceVocab> *vocab);
+  static Status SaveModel(const std::shared_ptr<SentencePieceVocab> *vocab, std::string path, std::string filename);
+  SentencePieceVocab();
+
+  ~SentencePieceVocab() = default;
+
+  const std::string &model_proto();
+
+  void set_model_proto(const std::string model_proto);
+
+ private:
+  std::string model_proto_;
+};
+}  // namespace dataset
+}  // namespace mindspore
+#endif  // DATASET_TEXT_SENTENCE_PIECE_VOCAB_H_

mindspore/dataset/engine/datasets.py

@@ -46,6 +46,7 @@ from .validators import check_batch, check_shuffle, check_map, check_filter, che
     check_generatordataset, check_sync_wait, check_zip_dataset, check_add_column, check_textfiledataset, check_concat, \
     check_random_dataset, check_split, check_bucket_batch_by_length, check_cluedataset, check_save
 from ..core.datatypes import mstype_to_detype, mstypelist_to_detypelist
+from ..text.utils import DE_C_INTER_SENTENCEPIECE_MODE
 
 try:
     context = import_module("mindspore.context")
@@ -909,6 +910,11 @@ class Dataset:
     def build_vocab(self, vocab, columns, freq_range, top_k, special_tokens, special_first):
         return BuildVocabDataset(self, vocab, columns, freq_range, top_k, special_tokens, special_first)
 
+    def build_sentencepiece_vocab(self, vocab, col_names, vocab_size,
+                                  character_coverage, model_type, params):
+        return BuildSentencePieceVocabDataset(self, vocab, col_names, vocab_size, character_coverage,
+                                              model_type, params)
+
     def apply(self, apply_func):
         """
         Apply a function in this dataset.
@@ -5154,3 +5160,58 @@ class BuildVocabDataset(DatasetOp):
         new_op.special_first = copy.deepcopy(self.special_first)
 
         return new_op
+
+class BuildSentencePieceVocabDataset(DatasetOp):
+    """
+    Build a SentencePieceVocab from a dataset.
+    This function is not meant to be called directly by user. To build vocab, please use the function
+    text.SentencePieceVocab.from_dataset()
+
+    Args:
+        vocab(SentencePieceVocab): text.SentencePieceVocab object.
+        col_names(list): The list of the col name.
+        vocab_size(int): Vocabulary size, the type of uint32_t.
+        charater_coverage(float): Amount of characters covered by the model, good defaults are: 0.9995 for languages
+            with rich character set like Japanse or Chinese and 1.0 for other languages with small character set.
+        model_type(SentencePieceModel): Model type.Choose from unigram (default), bpe, char, or word.
+            The input sentence must be pretokenized when using word type.
+        params(dict): A dictionary with no incoming parameters.
+    """
+
+    def __init__(self, input_dataset, vocab, col_names, vocab_size, character_coverage, model_type, params):
+        super().__init__()
+        self.vocab = vocab
+        self.col_names = col_names
+        self.vocab_size = vocab_size
+        self.children.append(input_dataset)
+        self.character_coverage = character_coverage
+        self.model_type = DE_C_INTER_SENTENCEPIECE_MODE[model_type]
+        self.params = params
+        input_dataset.parent.append(self)
+
+    def get_args(self):
+        args = super().get_args()
+        args["vocab"] = self.vocab
+        args["col_names"] = self.col_names
+        args["vocab_size"] = self.vocab_size
+        args["character_coverage"] = self.character_coverage
+        args["model_type"] = self.model_type
+        args["params"] = self.params
+        return args
+
+    def __deepcopy__(self, memodict):
+        if id(self) in memodict:
+            return memodict[id(self)]
+        cls = self.__class__
+        new_op = cls.__new__(cls)
+        memodict[id(self)] = new_op
+        new_op.children = copy.deepcopy(self.children, memodict)
+        new_op.col_names = copy.deepcopy(self.col_names, memodict)
+        new_op.num_parallel_workers = copy.deepcopy(self.num_parallel_workers, memodict)
+        new_op.vocab_size = copy.deepcopy(self.vocab_size, memodict)
+        new_op.parent = copy.deepcopy(self.parent, memodict)
+        new_op.character_coverage = copy.deepcopy(self.character_coverage, memodict)
+        new_op.params = copy.deepcopy(self.params, memodict)
+        new_op.vocab = self.vocab
+        new_op.model_type = copy.deepcopy(self.model_type)
+        return new_op

mindspore/dataset/engine/iterators.py

@@ -181,6 +181,8 @@ class Iterator:
             op_type = OpName.TEXTFILE
         elif isinstance(dataset, de.BuildVocabDataset):
             op_type = OpName.BUILDVOCAB
+        elif isinstance(dataset, de.BuildSentencePieceVocabDataset):
+            op_type = OpName.SENTENCEPIECEVOCAB
         elif isinstance(dataset, de.CLUEDataset):
             op_type = OpName.CLUE
         else:

mindspore/dataset/text/__init__.py

@@ -19,13 +19,16 @@ utils provides some general methods for nlp text processing.
 """
 import platform
 from .transforms import Lookup, JiebaTokenizer, UnicodeCharTokenizer, Ngram, WordpieceTokenizer, TruncateSequencePair, \
-    ToNumber, SlidingWindow
-from .utils import to_str, to_bytes, JiebaMode, Vocab, NormalizeForm
+    ToNumber, SlidingWindow, SentencePieceTokenizer
+from .utils import to_str, to_bytes, JiebaMode, Vocab, NormalizeForm, SentencePieceVocab, SentencePieceModel, \
+    SPieceTokenizerOutType, SPieceTokenizerLoadType
+
 
 __all__ = [
     "Lookup", "JiebaTokenizer", "UnicodeCharTokenizer", "Ngram",
     "to_str", "to_bytes", "Vocab", "WordpieceTokenizer", "TruncateSequencePair", "ToNumber",
-    "PythonTokenizer", "SlidingWindow"
+    "PythonTokenizer", "SlidingWindow", "SentencePieceVocab", "SentencePieceTokenizer", "SPieceTokenizerOutType",
+    "SentencePieceModel", "SPieceTokenizerLoadType"
 ]
 
 if platform.system().lower() != 'windows':

mindspore/dataset/text/transforms.py

@@ -50,7 +50,7 @@ import numpy as np
 
 import mindspore._c_dataengine as cde
 
-from .utils import JiebaMode, NormalizeForm, to_str
+from .utils import JiebaMode, NormalizeForm, to_str, SPieceTokenizerOutType, SPieceTokenizerLoadType
 from .validators import check_lookup, check_jieba_add_dict, \
     check_jieba_add_word, check_jieba_init, check_with_offsets, check_unicode_script_tokenizer,\
     check_wordpiece_tokenizer, check_regex_tokenizer, check_basic_tokenizer, check_ngram, check_pair_truncate,\
@@ -324,6 +324,36 @@ class WordpieceTokenizer(cde.WordpieceTokenizerOp):
         super().__init__(self.vocab, self.suffix_indicator, self.max_bytes_per_token,
                          self.unknown_token, self.with_offsets)
 
+DE_C_INTER_SENTENCEPIECE_LOADTYPE = {
+    SPieceTokenizerLoadType.FILE: cde.SPieceTokenizerLoadType.DE_SPIECE_TOKENIZER_LOAD_KFILE,
+    SPieceTokenizerLoadType.MODEL: cde.SPieceTokenizerLoadType.DE_SPIECE_TOKENIZER_LOAD_KMODEL
+}
+
+DE_C_INTER_SENTENCEPIECE_OUTTYPE = {
+    SPieceTokenizerOutType.STRING: cde.SPieceTokenizerOutType.DE_SPIECE_TOKENIZER_OUTTYPE_KString,
+    SPieceTokenizerOutType.INT: cde.SPieceTokenizerOutType.DE_SPIECE_TOKENIZER_OUTTYPE_KINT
+}
+
+class SentencePieceTokenizer(cde.SentencePieceTokenizerOp):
+    """
+    Tokenize scalar token or 1-D tokens to tokens by sentencepiece.
+
+    Args:
+        mode(str or SentencePieceVocab): If the input parameter is a file, then it is of type string,
+            if the input parameter is a SentencePieceVocab object, then it is of type SentencePieceVocab.
+        out_type(str or int): The type of output.
+    """
+
+    def __init__(self, mode, out_type):
+        self.out_type = out_type
+        if isinstance(mode, str):
+            model_path, model_filename = os.path.split(mode)
+            super().__init__(model_path, model_filename,
+                             DE_C_INTER_SENTENCEPIECE_LOADTYPE[SPieceTokenizerLoadType.FILE],
+                             DE_C_INTER_SENTENCEPIECE_OUTTYPE[out_type])
+        elif isinstance(mode, cde.SentencePieceVocab):
+            super().__init__(mode, DE_C_INTER_SENTENCEPIECE_LOADTYPE[SPieceTokenizerLoadType.MODEL],
+                             DE_C_INTER_SENTENCEPIECE_OUTTYPE[out_type])
 
 if platform.system().lower() != 'windows':
     class WhitespaceTokenizer(cde.WhitespaceTokenizerOp):

mindspore/dataset/text/utils.py

@@ -22,10 +22,11 @@ import copy
 import numpy as np
 import mindspore._c_dataengine as cde
 
-from .validators import check_from_file, check_from_list, check_from_dict, check_from_dataset
+from .validators import check_from_file, check_from_list, check_from_dict, check_from_dataset, \
+    check_from_dataset_sentencepiece, check_from_file_sentencepiece, check_save_model
 
 __all__ = [
-    "Vocab", "to_str", "to_bytes"
+    "Vocab", "SentencePieceVocab", "to_str", "to_bytes"
 ]
 
 
@@ -137,6 +138,71 @@ class Vocab(cde.Vocab):
 
         return super().from_dict(word_dict)
 
+class SentencePieceVocab(cde.SentencePieceVocab):
+    """
+    SentencePiece obiect that is used to segmentate words
+    """
+    @classmethod
+    @check_from_dataset_sentencepiece
+    def from_dataset(cls, dataset, col_names, vocab_size, character_coverage, model_type, params):
+        """
+        Build a sentencepiece from a dataset
+
+        Args:
+            dataset(Dataset): Dataset to build sentencepiece.
+            col_names(list): The list of the col name.
+            vocab_size(int): Vocabulary size, the type of uint32_t.
+            character_coverage(float): Amount of characters covered by the model, good defaults are: 0.9995 for
+                languages. with rich character set like Japanse or Chinese and 1.0 for other languages with small
+                character set.
+            model_type(SentencePieceModel): Choose from unigram (default), bpe, char, or word. The input sentence
+                must be pretokenized when using word type.
+            params(dict): A dictionary with no incoming parameters.
+
+        Returns:
+            SentencePiece, SentencePiece object from dataset.
+        """
+
+        vocab = SentencePieceVocab()
+        root = copy.deepcopy(dataset).build_sentencepiece_vocab(vocab, col_names, vocab_size, character_coverage,
+                                                                model_type, params)
+        for d in root.create_dict_iterator():
+            if d is None:
+                raise ValueError("from_dataset should receive data other than None.")
+        return vocab
+
+    @classmethod
+    @check_from_file_sentencepiece
+    def from_file(cls, file_path, vocab_size, character_coverage, model_type, params):
+        """
+        Build a SentencePiece object from a list of word.
+
+        Args:
+            file_path(list): Path to the file which contains the sentencepiece list.
+            vocab_size(int): Vocabulary size, the type of uint32_t.
+            character_coverage(float): Amount of characters covered by the model, good defaults are: 0.9995 for
+                languages. with rich character set like Japanse or Chinese and 1.0 for other languages with small
+                character set.
+            model_type(SentencePieceModel): Choose from unigram (default), bpe, char, or word. The input sentence
+                must be pretokenized when using word type.
+            params(dict): A dictionary with no incoming parameters.
+        """
+        return super().from_file(file_path, vocab_size, character_coverage,
+                                 DE_C_INTER_SENTENCEPIECE_MODE[model_type], params)
+
+    @classmethod
+    @check_save_model
+    def save_model(cls, vocab, path, filename):
+        """
+        Save model to filepath
+
+        Args:
+            vocab(SentencePieceVocab): A sentencepiece object.
+            path(str): Path to store model.
+            filename(str): The name of the file.
+        """
+        return super().save_model(vocab, path, filename)
+
 
 def to_str(array, encoding='utf8'):
     """
@@ -188,3 +254,27 @@ class NormalizeForm(IntEnum):
     NFKC = 2
     NFD = 3
     NFKD = 4
+
+class SentencePieceModel(IntEnum):
+    """An enumeration for SentencePieceModel, effective enumeration types are UNIGRAM, BPE, CHAR, WORD."""
+    UNIGRAM = 0
+    BPE = 1
+    CHAR = 2
+    WORD = 3
+
+DE_C_INTER_SENTENCEPIECE_MODE = {
+    SentencePieceModel.UNIGRAM: cde.SentencePieceModel.DE_SENTENCE_PIECE_UNIGRAM,
+    SentencePieceModel.BPE: cde.SentencePieceModel.DE_SENTENCE_PIECE_BPE,
+    SentencePieceModel.CHAR: cde.SentencePieceModel.DE_SENTENCE_PIECE_CHAR,
+    SentencePieceModel.WORD: cde.SentencePieceModel.DE_SENTENCE_PIECE_WORD
+}
+
+class SPieceTokenizerOutType(IntEnum):
+    """An enumeration for SPieceTokenizerOutType, effective enumeration types are STRING, INT."""
+    STRING = 0
+    INT = 1
+
+class SPieceTokenizerLoadType(IntEnum):
+    """An enumeration for SPieceTokenizerLoadType, effective enumeration types are FILE, MODEL."""
+    FILE = 0
+    MODEL = 1

mindspore/dataset/text/validators.py

@@ -419,3 +419,81 @@ def check_python_tokenizer(method):
         return method(self, *args, **kwargs)
 
     return new_method
+
+
+def check_from_dataset_sentencepiece(method):
+    """A wrapper that wraps a parameter checker to the original function (from_dataset)."""
+
+    @wraps(method)
+    def new_method(self, *args, **kwargs):
+        [_, col_names, vocab_size, character_coverage, model_type, params], _ = parse_user_args(method, *args, **kwargs)
+
+        if col_names is not None:
+            type_check(col_names, (list,), "col_names")
+
+        if vocab_size is not None:
+            check_uint32(vocab_size, "vocab_size")
+
+        if character_coverage is not None:
+            type_check(character_coverage, (float,), "character_coverage")
+
+        if model_type is not None:
+            from .utils import SentencePieceModel
+            type_check(model_type, (str, SentencePieceModel), "model_type")
+
+        if params is not None:
+            type_check(params, (dict,), "params")
+
+        return method(self, *args, **kwargs)
+
+    return new_method
+
+
+def check_from_file_sentencepiece(method):
+    """A wrapper that wraps a parameter checker to the original function (from_file)."""
+
+    @wraps(method)
+    def new_method(self, *args, **kwargs):
+        [file_path, vocab_size, character_coverage, model_type, params], _ = parse_user_args(method, *args, **kwargs)
+
+        if file_path is not None:
+            type_check(file_path, (list,), "file_path")
+
+        if vocab_size is not None:
+            check_uint32(vocab_size, "vocab_size")
+
+        if character_coverage is not None:
+            type_check(character_coverage, (float,), "character_coverage")
+
+        if model_type is not None:
+            from .utils import SentencePieceModel
+            type_check(model_type, (str, SentencePieceModel), "model_type")
+
+        if params is not None:
+            type_check(params, (dict,), "params")
+
+        return method(self, *args, **kwargs)
+
+    return new_method
+
+
+def check_save_model(method):
+    """A wrapper that wraps a parameter checker to the original function (save_model)."""
+
+    @wraps(method)
+    def new_method(self, *args, **kwargs):
+        [vocab, path, filename], _ = parse_user_args(method, *args, **kwargs)
+
+        if vocab is not None:
+            type_check(vocab, (cde.SentencePieceVocab,), "vocab")
+
+        if path is not None:
+            type_check(path, (str,), "path")
+
+        if filename is not None:
+            type_check(filename, (str,), "filename")
+
+        return method(self, *args, **kwargs)
+
+    return new_method
+    

tests/ut/cpp/dataset/CMakeLists.txt

@@ -94,6 +94,7 @@ SET(DE_UT_SRCS
         tensor_op_fusion_pass_test.cc
         sliding_window_op_test.cc
         epoch_ctrl_op_test.cc
+        sentence_piece_vocab_op_test.cc
         )
 
 add_executable(de_ut_tests ${DE_UT_SRCS})

tests/ut/cpp/dataset/sentence_piece_vocab_op_test.cc

@@ -0,0 +1,194 @@
+/**
+ * Copyright 2020 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string>
+#include <string_view>
+#include "common/common.h"
+#include "minddata/dataset/engine/datasetops/build_sentence_piece_vocab_op.h"
+#include "minddata/dataset/text/kernels/sentence_piece_tokenizer_op.h"
+#include "minddata/dataset/text/sentence_piece_vocab.h"
+#include "minddata/dataset/engine/datasetops/source/text_file_op.h"
+#include "gtest/gtest.h"
+#include "utils/log_adapter.h"
+#include "minddata/dataset/util/status.h"
+
+using namespace mindspore::dataset;
+
+class MindDataTestSentencePieceVocabOp : public UT::DatasetOpTesting {
+ public:
+  void CheckEqual(const std::shared_ptr<Tensor> &o, const std::vector<dsize_t> &index, const std::string &expect) {
+    std::string_view str;
+    Status s = o->GetItemAt(&str, index);
+    EXPECT_TRUE(s.IsOk());
+    EXPECT_EQ(str, expect);
+  }
+};
+
+TEST_F(MindDataTestSentencePieceVocabOp, TestSentencePieceFromDatasetFuntions) {
+  MS_LOG(INFO) << "Doing MindDataTestSentencePieceVocabOp  TestSentencePieceFromDatasetFuntions.";
+
+  std::string dataset_path;
+  dataset_path = datasets_root_path_ + "/test_sentencepiece/botchan.txt";
+  auto tree = std::make_shared<ExecutionTree>();
+
+  std::shared_ptr<TextFileOp> file_op;
+  TextFileOp::Builder builder_file;
+  builder_file.SetTextFilesList({dataset_path}).SetRowsPerBuffer(1).SetNumWorkers(1).SetOpConnectorSize(2);
+
+  Status rc = builder_file.Build(&file_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = tree->AssociateNode(file_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  std::shared_ptr<SentencePieceVocab> spm = std::make_unique<SentencePieceVocab>();
+  std::shared_ptr<BuildSentencePieceVocabOp> spv_op;
+  BuildSentencePieceVocabOp::Builder builder_spv;
+  std::vector<std::string> cols;
+  std::unordered_map<std::string, std::string> m_params;
+  builder_spv.SetVocab(spm)
+    .SetVocabSize(5000)
+    .SetColumnNames(cols)
+    .SetCharacterCoverage(0.9995)
+    .SetModelType(SentencePieceModel::kUnigram)
+    .SetParams(m_params)
+    .SetOpConnectorSize(2);
+
+  rc = builder_spv.Build(&spv_op);
+  ASSERT_TRUE(rc.IsOk());
+  rc = tree->AssociateNode(spv_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = spv_op->AddChild(file_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = tree->AssignRoot(spv_op);
+  ASSERT_TRUE(rc.IsOk());
+  rc = tree->Prepare();
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = tree->Launch();
+  ASSERT_TRUE(rc.IsOk());
+
+  // Start the loop of reading tensors from our pipeline
+  DatasetIterator di(tree);
+  TensorRow tensor_list;
+  rc = di.FetchNextTensorRow(&tensor_list);
+  ASSERT_TRUE(rc.IsOk());
+
+  while (!tensor_list.empty()) {
+    rc = di.FetchNextTensorRow(&tensor_list);
+  }
+  ASSERT_TRUE(rc.IsOk());
+
+}
+
+TEST_F(MindDataTestSentencePieceVocabOp, TestSentencePieceFromFileFuntions) {
+  MS_LOG(INFO) << "Doing MindDataTestSentencePieceVocabOp  TestSentencePieceFromFileFuntions.";
+
+  std::string dataset_path;
+  dataset_path = datasets_root_path_ + "/test_sentencepiece/botchan.txt";
+  std::vector<std::string> path_list;
+  path_list.emplace_back(dataset_path);
+  std::unordered_map<std::string, std::string> param_map;
+  std::shared_ptr<SentencePieceVocab> spm = std::make_unique<SentencePieceVocab>();
+  Status rc = SentencePieceVocab::BuildFromFile(path_list, 5000, 0.9995, SentencePieceModel::kUnigram, param_map, &spm);
+  ASSERT_TRUE(rc.IsOk());
+}
+
+TEST_F(MindDataTestSentencePieceVocabOp, TestSentencePieceTokenizerFuntions) {
+  MS_LOG(INFO) << "Doing MindDataTestSentencePieceVocabOp  TestSentencePieceTokenizerFuntions.";
+
+  std::string dataset_path;
+  dataset_path = datasets_root_path_ + "/test_sentencepiece/botchan.txt";
+  auto tree = std::make_shared<ExecutionTree>();
+
+  std::shared_ptr<TextFileOp> file_op;
+  TextFileOp::Builder builder_file;
+  builder_file.SetTextFilesList({dataset_path}).SetRowsPerBuffer(1).SetNumWorkers(1).SetOpConnectorSize(2);
+
+  Status rc = builder_file.Build(&file_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = tree->AssociateNode(file_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  std::shared_ptr<SentencePieceVocab> spm = std::make_unique<SentencePieceVocab>();
+  std::shared_ptr<BuildSentencePieceVocabOp> spv_op;
+  BuildSentencePieceVocabOp::Builder builder_spv;
+  std::vector<std::string> cols;
+  std::unordered_map<std::string, std::string> m_params;
+
+  builder_spv.SetVocab(spm)
+    .SetVocabSize(5000)
+    .SetColumnNames(cols)
+    .SetCharacterCoverage(0.9995)
+    .SetModelType(SentencePieceModel::kUnigram)
+    .SetParams(m_params)
+    .SetOpConnectorSize(2);
+
+  rc = builder_spv.Build(&spv_op);
+  ASSERT_TRUE(rc.IsOk());
+  rc = tree->AssociateNode(spv_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = spv_op->AddChild(file_op);
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = tree->AssignRoot(spv_op);
+  ASSERT_TRUE(rc.IsOk());
+  rc = tree->Prepare();
+  ASSERT_TRUE(rc.IsOk());
+
+  rc = tree->Launch();
+  ASSERT_TRUE(rc.IsOk());
+
+  // Start the loop of reading tensors from our pipeline
+  DatasetIterator di(tree);
+  TensorRow tensor_list;
+  rc = di.FetchNextTensorRow(&tensor_list);
+  ASSERT_TRUE(rc.IsOk());
+
+  while (!tensor_list.empty()) {
+    rc = di.FetchNextTensorRow(&tensor_list);
+  }
+  std::shared_ptr<Tensor> output_tensor;
+  std::unique_ptr<SentencePieceTokenizerOp> op(new SentencePieceTokenizerOp(spm,
+    SPieceTokenizerLoadType::kModel, SPieceTokenizerOutType::kString));
+  std::shared_ptr<Tensor> input_tensor = std::make_shared<Tensor>("I saw a girl with a telescope.");
+  Status s = op->Compute(input_tensor, &output_tensor);
+
+  std::vector<std::string> expect;
+  expect.push_back("▁I");
+  expect.push_back("▁sa");
+  expect.push_back("w");
+  expect.push_back("▁a");
+  expect.push_back("▁girl");
+  expect.push_back("▁with");
+  expect.push_back("▁a");
+  expect.push_back("▁te");
+  expect.push_back("les");
+  expect.push_back("co");
+  expect.push_back("pe");
+  expect.push_back(".");
+  ASSERT_TRUE(output_tensor->Size() == expect.size());
+  for (int i = 0; i < output_tensor->Size(); i++) {
+    std::string_view str;
+    output_tensor->GetItemAt(&str, {i});
+    std::string sentence{str};
+    ASSERT_TRUE(sentence == expect[i]);
+  }
+}

tests/ut/data/dataset/testTokenizerData/sentencepiece_tokenizer.txt

@@ -0,0 +1 @@
+I saw a girl with a telescope.

tests/ut/python/dataset/test_sentencepiece_tokenizer.py

@@ -0,0 +1,92 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+
+import mindspore.dataset.text as text
+import mindspore.dataset as ds
+from mindspore.dataset.text import SentencePieceModel, to_str, SPieceTokenizerOutType
+
+VOCAB_FILE = "../data/dataset/test_sentencepiece/botchan.txt"
+DATA_FILE = "../data/dataset/testTokenizerData/sentencepiece_tokenizer.txt"
+
+
+def test_from_vocab_to_str():
+    vocab = text.SentencePieceVocab.from_file([VOCAB_FILE], 5000, 0.9995, SentencePieceModel.UNIGRAM, {})
+    tokenizer = text.SentencePieceTokenizer(vocab, out_type=SPieceTokenizerOutType.STRING)
+    dataset = ds.TextFileDataset(DATA_FILE, shuffle=False)
+    dataset = dataset.map(operations=tokenizer)
+    expect = ['▁I', '▁sa', 'w', '▁a', '▁girl', '▁with', '▁a', '▁te', 'les', 'co', 'pe', '.']
+    for i in dataset.create_dict_iterator():
+        ret = to_str(i["text"])
+        for key, value in enumerate(ret):
+            assert value == expect[key]
+
+
+def test_from_vocab_to_int():
+    vocab = text.SentencePieceVocab.from_file([VOCAB_FILE], 5000, 0.9995, SentencePieceModel.UNIGRAM, {})
+    tokenizer = text.SentencePieceTokenizer(vocab, out_type=SPieceTokenizerOutType.INT)
+    dataset = ds.TextFileDataset(DATA_FILE, shuffle=False)
+    dataset = dataset.map(operations=tokenizer)
+    expect = [6, 329, 183, 8, 945, 23, 8, 3783, 4382, 4641, 1405, 4]
+    for i in dataset.create_dict_iterator():
+        ret = i["text"]
+        for key, value in enumerate(ret):
+            assert value == expect[key]
+
+
+def test_from_file_to_str():
+    vocab = text.SentencePieceVocab.from_file([VOCAB_FILE], 5000, 0.9995, SentencePieceModel.UNIGRAM, {})
+    text.SentencePieceVocab.save_model(vocab, "./", "m.model")
+    tokenizer = text.SentencePieceTokenizer("./m.model", out_type=SPieceTokenizerOutType.STRING)
+    dataset = ds.TextFileDataset(DATA_FILE, shuffle=False)
+    dataset = dataset.map(operations=tokenizer)
+    expect = ['▁I', '▁sa', 'w', '▁a', '▁girl', '▁with', '▁a', '▁te', 'les', 'co', 'pe', '.']
+    for i in dataset.create_dict_iterator():
+        ret = to_str(i["text"])
+        for key, value in enumerate(ret):
+            assert value == expect[key]
+
+
+def test_from_file_to_int():
+    vocab = text.SentencePieceVocab.from_file([VOCAB_FILE], 5000, 0.9995, SentencePieceModel.UNIGRAM, {})
+    text.SentencePieceVocab.save_model(vocab, "./", "m.model")
+    tokenizer = text.SentencePieceTokenizer("./m.model", out_type=SPieceTokenizerOutType.INT)
+    dataset = ds.TextFileDataset(DATA_FILE, shuffle=False)
+    dataset = dataset.map(operations=tokenizer)
+    expect = [6, 329, 183, 8, 945, 23, 8, 3783, 4382, 4641, 1405, 4]
+    for i in dataset.create_dict_iterator():
+        ret = i["text"]
+        for key, value in enumerate(ret):
+            assert value == expect[key]
+
+
+def test_build_from_dataset():
+    data = ds.TextFileDataset(VOCAB_FILE, shuffle=False)
+    vocab = text.SentencePieceVocab.from_dataset(data, [""], 5000, 0.9995, SentencePieceModel.UNIGRAM, {})
+    tokenizer = text.SentencePieceTokenizer(vocab, out_type=SPieceTokenizerOutType.STRING)
+    dataset = ds.TextFileDataset(DATA_FILE, shuffle=False)
+    dataset = dataset.map(operations=tokenizer)
+    expect = ['▁I', '▁sa', 'w', '▁a', '▁girl', '▁with', '▁a', '▁te', 'les', 'co', 'pe', '.']
+    for i in dataset.create_dict_iterator():
+        ret = to_str(i["text"])
+        for key, value in enumerate(ret):
+            assert value == expect[key]
+
+
+if __name__ == "__main__":
+    test_from_vocab_to_str()
+    test_from_vocab_to_int()
+    test_from_file_to_str()
+    test_from_file_to_int()
+    test_build_from_dataset()

third_party/patch/sentencepiece/sentencepiece.patch001

@@ -0,0 +1,91 @@
+diff -Npur sentencepiece-0.1.92/src/CMakeLists.txt sentencepiece-0.1.92_bak/src/CMakeLists.txt
+--- sentencepiece-0.1.92/src/CMakeLists.txt	2020-06-08 16:25:01.000000000 +0800
++++ sentencepiece-0.1.92_bak/src/CMakeLists.txt	2020-07-02 17:42:33.306933546 +0800
+@@ -11,6 +11,46 @@
+ # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ # See the License for the specific language governing permissions and
+ # limitations under the License.!
++add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
++
++
++function(protobuf_generate c_var h_var)
++  if(NOT ARGN)
++    message(SEND_ERROR "Error: ms_protobuf_generate() called without any proto files")
++    return()
++  endif()
++
++  set(${c_var})
++  set(${h_var})
++
++  find_program(PROTOC_EXE  NAMES "protoc" PATHS ${PROTOBUF_INC}/../bin NO_DEFAULT_PATH)
++
++  foreach(file ${ARGN})
++    get_filename_component(abs_file ${file} ABSOLUTE)
++    get_filename_component(file_name ${file} NAME_WE)
++    get_filename_component(file_dir ${abs_file} PATH)
++    file(RELATIVE_PATH rel_path ${CMAKE_CURRENT_SOURCE_DIR} ${file_dir})
++
++    list(APPEND ${c_var} "${CMAKE_BINARY_DIR}/${file_name}.pb.cc")
++    list(APPEND ${h_var} "${CMAKE_BINARY_DIR}/${file_name}.pb.h")
++
++    add_custom_command(
++            OUTPUT "${CMAKE_BINARY_DIR}/${file_name}.pb.cc"
++            "${CMAKE_BINARY_DIR}/${file_name}.pb.h"
++            WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
++            COMMAND ${CMAKE_COMMAND} -E make_directory "${CMAKE_BINARY_DIR}"
++            COMMAND ${PROTOC_EXE} -I${file_dir} --cpp_out=${CMAKE_BINARY_DIR} ${abs_file}
++            DEPENDS ${PROTOC_EXE} ${abs_file}
++            COMMENT "Running C++ protocol buffer compiler on ${file}" VERBATIM)
++  endforeach()
++
++  set_source_files_properties(${${c_var}} ${${h_var}} PROPERTIES GENERATED TRUE)
++  set(${c_var} ${${c_var}} PARENT_SCOPE)
++  set(${h_var} ${${h_var}} PARENT_SCOPE)
++
++endfunction()
++
++
+ 
+ if (SPM_USE_BUILTIN_PROTOBUF)
+   set(SPM_PROTO_HDRS builtin_pb/sentencepiece.pb.h)
+@@ -52,12 +92,9 @@ if (SPM_USE_BUILTIN_PROTOBUF)
+   include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../third_party/protobuf-lite)
+   include_directories(builtin_pb)
+ else()
+-  find_package(Protobuf REQUIRED)
+-  include_directories(${Protobuf_INCLUDE_DIRS})
+-  protobuf_generate_cpp(SPM_PROTO_SRCS SPM_PROTO_HDRS sentencepiece.proto)
+-  protobuf_generate_cpp(SPM_MODEL_PROTO_SRCS SPM_MODEL_PROTO_HDRS sentencepiece_model.proto)
+-  set(PROTOBUF_LITE_SRCS "")
+-  include_directories(${PROTOBUF_INCLUDE_DIR})
++  include_directories(${PROTOBUF_INC})
++  protobuf_generate(SPM_PROTO_SRCS  SPM_PROTO_HDRS sentencepiece.proto)
++  protobuf_generate(SPM_MODEL_PROTO_SRCS  SPM_MODEL_PROTO_HDRS sentencepiece_model.proto)
+ endif()
+ 
+ include_directories(${CMAKE_CURRENT_BINARY_DIR})
+@@ -191,11 +228,13 @@ endif()
+ add_library(sentencepiece-static STATIC ${SPM_SRCS})
+ add_library(sentencepiece_train-static STATIC ${SPM_TRAIN_SRCS})
+ 
+-target_link_libraries(sentencepiece-static INTERFACE ${SPM_LIBS})
++find_library(PROTO_LIB NAMES "libprotobuf.a" PATHS ${PROTOBUF_INC}/../lib NO_DEFAULT_PATH)
++
++target_link_libraries(sentencepiece-static INTERFACE ${PROTO_LIB} ${SPM_LIBS})
+ target_link_libraries(sentencepiece_train-static INTERFACE sentencepiece-static ${SPM_LIBS})
+ 
+ if (SPM_ENABLE_SHARED)
+-  target_link_libraries(sentencepiece ${SPM_LIBS})
++  target_link_libraries(sentencepiece ${SPM_LIBS} ${PROTO_LIB})
+   target_link_libraries(sentencepiece_train ${SPM_LIBS} sentencepiece)
+   set(SPM_INSTALLTARGETS sentencepiece sentencepiece_train sentencepiece-static sentencepiece_train-static)
+   set_target_properties(sentencepiece sentencepiece_train PROPERTIES SOVERSION 0 VERSION 0.0.0)
+@@ -265,7 +304,7 @@ install(TARGETS ${SPM_INSTALLTARGETS}
+   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+-install(FILES sentencepiece_trainer.h sentencepiece_processor.h
++install(FILES sentencepiece_trainer.h sentencepiece_processor.h "${CMAKE_BINARY_DIR}/sentencepiece_model.pb.h"
+   DESTINATION ${CMAKE_INSTALL_INCDIR})
+ 
+ file(TO_NATIVE_PATH "${PROJECT_SOURCE_DIR}/data" data_dir)