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// Copyright 2017 The TensorFlow Authors. All Rights Reserved.
//
// 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 "tensorflow/core/framework/common_shape_fns.h"
#include "tensorflow/core/framework/op.h"
#include "tensorflow/core/framework/resource_mgr.h"
#include "tensorflow/core/framework/shape_inference.h"
namespace tensorflow {
using shape_inference::DimensionHandle;
using shape_inference::InferenceContext;
using shape_inference::ShapeHandle;
namespace tensorforest {
REGISTER_RESOURCE_HANDLE_OP(DecisionTreeResource);
REGISTER_OP("TreeIsInitializedOp")
.Input("tree_handle: resource")
.Output("is_initialized: bool")
.SetShapeFn(tensorflow::shape_inference::ScalarShape)
.Doc(R"doc(
Checks whether a tree has been initialized.
)doc");
REGISTER_OP("CreateTreeVariable")
.Attr("params: string")
.Input("tree_handle: resource")
.Input("tree_config: string")
.SetShapeFn(tensorflow::shape_inference::NoOutputs)
.Doc(R"doc(
Creates a tree model and returns a handle to it.
params: A serialized TensorForestParams proto.
tree_handle: handle to the tree resource to be created.
tree_config: Serialized proto of the tree.
)doc");
REGISTER_OP("TreeSerialize")
.Input("tree_handle: resource")
.Output("tree_config: string")
.SetShapeFn(tensorflow::shape_inference::ScalarShape)
.Doc(R"doc(
Serializes the tree to a proto.
tree_handle: The handle to the tree.
tree_config: Serialized proto of the tree.
)doc");
REGISTER_OP("TreeDeserialize")
.Attr("params: string")
.Input("tree_handle: resource")
.Input("tree_config: string")
.SetShapeFn(tensorflow::shape_inference::NoOutputs)
.Doc(R"doc(
Deserializes a serialized tree config and replaces current tree.
params: A serialized TensorForestParams proto.
tree_handle: The handle to the tree .
tree_config: Serialized proto of the .
)doc");
REGISTER_OP("TreeSize")
.Input("tree_handle: resource")
.Output("tree_size: int32")
.SetShapeFn(tensorflow::shape_inference::ScalarShape)
.Doc(R"doc(
Outputs the size of the tree, including leaves.
tree_handle: The handle to the tree.
tree_size: Size scalar.
)doc");
REGISTER_OP("TreePredictionsV4")
.Attr("input_spec: string")
.Attr("params: string")
.Input("tree_handle: resource")
.Input("input_data: float")
.Input("sparse_input_indices: int64")
.Input("sparse_input_values: float")
.Input("sparse_input_shape: int64")
.Output("predictions: float")
.SetShapeFn([](InferenceContext* c) {
DimensionHandle num_points = c->UnknownDim();
if (c->RankKnown(c->input(1)) && c->Rank(c->input(1)) > 0 &&
c->Value(c->Dim(c->input(1), 0)) > 0) {
num_points = c->Dim(c->input(1), 0);
}
c->set_output(0, c->Matrix(num_points, c->UnknownDim()));
return Status::OK();
})
.Doc(R"doc(
Outputs the predictions for the given input data.
params: A serialized TensorForestParams proto.
tree_handle: The handle to the tree.
input_data: The training batch's features as a 2-d tensor; `input_data[i][j]`
gives the j-th feature of the i-th input.
sparse_input_indices: The indices tensor from the SparseTensor input.
sparse_input_values: The values tensor from the SparseTensor input.
sparse_input_shape: The shape tensor from the SparseTensor input.
predictions: `predictions[i][j]` is the probability that input i is class j.
)doc");
REGISTER_OP("FeatureUsageCounts")
.Attr("params: string")
.Input("tree_handle: resource")
.Output("feature_counts: int32")
.SetShapeFn([](InferenceContext* c) {
c->set_output(0, c->Vector(c->UnknownDim()));
return Status::OK();
})
.Doc(R"doc(
Outputs the number of times each feature was used in a split.
params: A serialized TensorForestParams proto.
tree_handle: The handle to the tree.
feature_counts: `feature_counts[i]` is the number of times feature i was used
in a split.
)doc");
} // namespace tensorforest
} // namespace tensorflow
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