!11642 add dropout attr keep_prop

From: @jinyaohui
Reviewed-by: @kingxian,@hangangqiang
Signed-off-by: @kingxian

mindspore/core/ops/dropout.cc

@@ -24,16 +24,31 @@
 
 namespace mindspore {
 namespace ops {
-void Dropout::Init(const float ratio) { this->set_ratio(ratio); }
+void Dropout::Init(const float ratio, const float keep_prob) {
+  this->set_ratio(ratio);
+  this->set_keep_prob(keep_prob);
+}
+
 void Dropout::set_ratio(const float ratio) {
   CheckAndConvertUtils::CheckInRange<float>(kRatio, ratio, kIncludeRight, {0.0, 1.0}, this->name());
-  this->AddAttr(kKeepProb, MakeValue(ratio));
+  this->AddAttr(kRatio, MakeValue(ratio));
+}
+
+void Dropout::set_keep_prob(const float keep_prob) {
+  CheckAndConvertUtils::CheckInRange<float>(kKeepProb, keep_prob, kIncludeRight, {0.0, 1.0}, this->name());
+  this->AddAttr(kKeepProb, MakeValue(keep_prob));
 }
+
 float Dropout::get_ratio() const {
   auto value_ptr = this->GetAttr(kRatio);
   return GetValue<float>(value_ptr);
 }
 
+float Dropout::get_keep_prob() const {
+  auto value_ptr = this->GetAttr(kKeepProb);
+  return GetValue<float>(value_ptr);
+}
+
 AbstractBasePtr DropoutInfer(const abstract::AnalysisEnginePtr &, const PrimitivePtr &primitive,
                              const std::vector<AbstractBasePtr> &input_args) {
   MS_EXCEPTION_IF_NULL(primitive);

mindspore/core/ops/dropout.h

@@ -31,9 +31,11 @@ class Dropout : public PrimitiveC {
   Dropout() : PrimitiveC(kNameDropout) {}
   ~Dropout() = default;
   MS_DECLARE_PARENT(Dropout, PrimitiveC);
-  void Init(const float ratio = 0.5);
+  void Init(const float ratio = 0.5, const float keep_prob = 0.5);
   void set_ratio(const float ratio);
+  void set_keep_prob(const float keep_prob);
   float get_ratio() const;
+  float get_keep_prob() const;
 };
 AbstractBasePtr DropoutInfer(const abstract::AnalysisEnginePtr &, const PrimitivePtr &primitive,
                              const std::vector<AbstractBasePtr> &input_args);