diff --git a/.github/workflows/install_learnware_with_pip.yaml b/.github/workflows/install_learnware_with_pip.yaml
new file mode 100644
index 0000000..137909e
--- /dev/null
+++ b/.github/workflows/install_learnware_with_pip.yaml
@@ -0,0 +1,54 @@
+name: Test leanrnware from pip
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    timeout-minutes: 120
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, ubuntu-20.04, ubuntu-22.04, macos-11, macos-latest]
+        python-version: [3.8, 3.9, 3.10]
+
+    steps:
+    - name: Test learnware from pip
+      uses: actions/checkout@v3
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+
+     - name: Add conda to system path
+      run: |
+        # $CONDA is an environment variable pointing to the root of the miniconda directory
+        echo $CONDA/bin >> $GITHUB_PATH
+    
+    - name: Create conda env for macos
+      run: |
+        conda create -n learnware python=${{ matrix.python-version }}
+        conda create activate learnware
+
+    - name: Update pip to the latest version
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install pytest
+
+    - name: Install faiss for MacOS
+      if: ${{ matrix.os == 'macos-11' || matrix.os == 'macos-latest' }}
+      run: |
+        conda install -c pytorch faiss
+
+    - name: Install learnware
+      run: |
+        python -m pip install learnware
+
+    - name: Test workflow
+      run: |
+        pytest tests/test_workflow/test_workflow.py
\ No newline at end of file
diff --git a/.github/workflows/install_learnware_with_source.yaml b/.github/workflows/install_learnware_with_source.yaml
new file mode 100644
index 0000000..e9589e3
--- /dev/null
+++ b/.github/workflows/install_learnware_with_source.yaml
@@ -0,0 +1,59 @@
+name: Test leanrnware from source code
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+    timeout-minutes: 120
+
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [windows-latest, ubuntu-20.04, ubuntu-22.04, macos-11, macos-latest]
+        python-version: [3.8, 3.9, 3.10]
+
+    steps:
+    - name: Test learnware from pip
+      uses: actions/checkout@v3
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+
+     - name: Add conda to system path
+      run: |
+        # $CONDA is an environment variable pointing to the root of the miniconda directory
+        echo $CONDA/bin >> $GITHUB_PATH
+    
+    - name: Create conda env for macos
+      run: |
+        conda create -n learnware python=${{ matrix.python-version }}
+        conda create activate learnware
+
+    - name: Update pip to the latest version
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install flake8 pytest
+    
+    - name: Lint with flake8
+      run: |
+      # stop the build if there are Python syntax errors or undefined names
+      flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+
+    - name: Install faiss for MacOS
+      if: ${{ matrix.os == 'macos-11' || matrix.os == 'macos-latest' }}
+      run: |
+        conda install -c pytorch faiss
+
+    - name: Install learnware
+      run: |
+        python -m pip install .
+
+    - name: Test workflow
+      run: |
+        pytest tests/test_workflow/test_workflow.py
\ No newline at end of file
diff --git a/learnware/client/learnware_client.py b/learnware/client/learnware_client.py
index b466be7..266d45f 100644
--- a/learnware/client/learnware_client.py
+++ b/learnware/client/learnware_client.py
@@ -408,7 +408,8 @@ class LearnwareClient:
         try:
             for key in ["Data", "Task", "Library"]:
                 value = semantic_spec[key]["Values"]
-                if len(value) != 1 and value[0] not in key_list:
+                key_list = C["semantic_specs"][key]["Values"]
+                if len(value) != 1 or value[0] not in key_list:
                     logger.error(f"{key} must be in {key_list}!")
                     return False
 
diff --git a/learnware/specification/__init__.py b/learnware/specification/__init__.py
index 935210b..c54cafc 100644
--- a/learnware/specification/__init__.py
+++ b/learnware/specification/__init__.py
@@ -1,4 +1,3 @@
 from .utils import generate_stat_spec, generate_rkme_spec, generate_rkme_image_spec
 from .base import Specification, BaseStatSpecification
-from .image import RKMEImageStatSpecification
-from .table import RKMEStatSpecification
+from .regular import RKMEStatSpecification, RKMEImageStatSpecification
diff --git a/learnware/specification/base.py b/learnware/specification/base.py
index 655e5a4..1c340fa 100644
--- a/learnware/specification/base.py
+++ b/learnware/specification/base.py
@@ -15,11 +15,8 @@ class BaseStatSpecification:
         """
         self.type = type
 
-    def generate_stat_spec_from_data(self, **kwargs):
-        """Construct statistical specification from raw dataset
-        - kwargs may include the feature, label and model
-        - kwargs also can include hyperparameters of specific method for specifaction generation
-        """
+    def generate_stat_spec(self, **kwargs):
+        """Construct statistical specification"""
         raise NotImplementedError("generate_stat_spec_from_data is not implemented")
 
     def save(self, filepath: str):
diff --git a/learnware/specification/regular/__init__.py b/learnware/specification/regular/__init__.py
new file mode 100644
index 0000000..ba6c866
--- /dev/null
+++ b/learnware/specification/regular/__init__.py
@@ -0,0 +1,2 @@
+from .table import RKMEStatSpecification
+from .image import RKMEImageStatSpecification
diff --git a/learnware/specification/regular/base.py b/learnware/specification/regular/base.py
new file mode 100644
index 0000000..48a7e1f
--- /dev/null
+++ b/learnware/specification/regular/base.py
@@ -0,0 +1,13 @@
+from ..base import BaseStatSpecification
+
+
+class RegularStatsSpecification(BaseStatSpecification):
+    def generate_stat_spec(self, **kwargs):
+        self.generate_stat_spec_from_data(**kwargs)
+
+    def generate_stat_spec_from_data(self, **kwargs):
+        """Construct statistical specification from raw dataset
+        - kwargs may include the feature, label and model
+        - kwargs also can include hyperparameters of specific method for specifaction generation
+        """
+        raise NotImplementedError("generate_stat_spec_from_data is not implemented")
diff --git a/learnware/specification/image/__init__.py b/learnware/specification/regular/image/__init__.py
similarity index 100%
rename from learnware/specification/image/__init__.py
rename to learnware/specification/regular/image/__init__.py
diff --git a/learnware/specification/image/cnn_gp.py b/learnware/specification/regular/image/cnn_gp.py
similarity index 100%
rename from learnware/specification/image/cnn_gp.py
rename to learnware/specification/regular/image/cnn_gp.py
diff --git a/learnware/specification/image/rkme.py b/learnware/specification/regular/image/rkme.py
similarity index 99%
rename from learnware/specification/image/rkme.py
rename to learnware/specification/regular/image/rkme.py
index d651b6a..e65dc27 100644
--- a/learnware/specification/image/rkme.py
+++ b/learnware/specification/regular/image/rkme.py
@@ -122,7 +122,9 @@ class RKMEImageStatSpecification(BaseStatSpecification):
                     X[i] = torch.where(is_nan, img_mean, img)
 
         if X.shape[2] != RKMEImageStatSpecification.IMAGE_WIDTH or X.shape[3] != RKMEImageStatSpecification.IMAGE_WIDTH:
-            X = Resize((RKMEImageStatSpecification.IMAGE_WIDTH, RKMEImageStatSpecification.IMAGE_WIDTH), antialias=None)(X)
+            X = Resize(
+                (RKMEImageStatSpecification.IMAGE_WIDTH, RKMEImageStatSpecification.IMAGE_WIDTH), antialias=None
+            )(X)
 
         num_points = X.shape[0]
         X_shape = X.shape
diff --git a/learnware/specification/table/__init__.py b/learnware/specification/regular/table/__init__.py
similarity index 100%
rename from learnware/specification/table/__init__.py
rename to learnware/specification/regular/table/__init__.py
diff --git a/learnware/specification/table/rkme.py b/learnware/specification/regular/table/rkme.py
similarity index 99%
rename from learnware/specification/table/rkme.py
rename to learnware/specification/regular/table/rkme.py
index a0422ae..e001dd5 100644
--- a/learnware/specification/table/rkme.py
+++ b/learnware/specification/regular/table/rkme.py
@@ -20,8 +20,8 @@ try:
 except ImportError:
     _FAISS_INSTALLED = False
 
-from ..base import BaseStatSpecification
-from ...logger import get_module_logger
+from ..base import RegularStatsSpecification
+from ....logger import get_module_logger
 
 logger = get_module_logger("rkme")
 
@@ -30,7 +30,7 @@ if not _FAISS_INSTALLED:
     logger.warning('Please run "conda install -c pytorch faiss-cpu" first.')
 
 
-class RKMEStatSpecification(BaseStatSpecification):
+class RKMEStatSpecification(RegularStatsSpecification):
     """Reduced Kernel Mean Embedding (RKME) Specification"""
 
     def __init__(self, gamma: float = 0.1, cuda_idx: int = -1):
diff --git a/learnware/specification/system/__init__.py b/learnware/specification/system/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/learnware/specification/system/heter_table.py b/learnware/specification/system/heter_table.py
new file mode 100644
index 0000000..ae24a1c
--- /dev/null
+++ b/learnware/specification/system/heter_table.py
@@ -0,0 +1,15 @@
+from ..base import BaseStatSpecification
+
+
+class HeterMapTableSpecification(BaseStatSpecification):
+    def generate_stat_spec(self, **kwargs):
+        pass
+
+    def save(self, filepath: str):
+        pass
+
+    def load(self, filepath: str):
+        pass
+
+    def dist(self, other_spec):
+        pass
diff --git a/learnware/specification/utils.py b/learnware/specification/utils.py
index d480de9..f0108ab 100644
--- a/learnware/specification/utils.py
+++ b/learnware/specification/utils.py
@@ -3,9 +3,8 @@ import numpy as np
 import pandas as pd
 from typing import Union
 
-from .image import RKMEImageStatSpecification
 from .base import BaseStatSpecification
-from .table import RKMEStatSpecification
+from .regular import RKMEStatSpecification, RKMEImageStatSpecification
 from ..config import C