/*
|
* Copyright (C) 2018 The Android Open Source Project
|
*
|
* 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 LIBTEXTCLASSIFIER_ACTIONS_FEATURE_PROCESSOR_H_
|
#define LIBTEXTCLASSIFIER_ACTIONS_FEATURE_PROCESSOR_H_
|
|
#include <memory>
|
|
#include "actions/actions_model_generated.h"
|
#include "annotator/model-executor.h"
|
#include "annotator/types.h"
|
#include "utils/token-feature-extractor.h"
|
#include "utils/tokenizer.h"
|
#include "utils/utf8/unicodetext.h"
|
#include "utils/utf8/unilib.h"
|
|
namespace libtextclassifier3 {
|
|
// Create tokenizer from options.
|
std::unique_ptr<Tokenizer> CreateTokenizer(
|
const ActionsTokenizerOptions* options, const UniLib* unilib);
|
|
// Feature processor for the actions suggestions model.
|
class ActionsFeatureProcessor {
|
public:
|
ActionsFeatureProcessor(const ActionsTokenFeatureProcessorOptions* options,
|
const UniLib* unilib);
|
|
// Embeds and appends features to the output vector.
|
bool AppendFeatures(const std::vector<int>& sparse_features,
|
const std::vector<float>& dense_features,
|
const EmbeddingExecutor* embedding_executor,
|
std::vector<float>* output_features) const;
|
|
// Extracts the features of a token and appends them to the output vector.
|
bool AppendTokenFeatures(const Token& token,
|
const EmbeddingExecutor* embedding_executor,
|
std::vector<float>* output_features) const;
|
|
// Extracts the features of a vector of tokens and appends each to the output
|
// vector.
|
bool AppendTokenFeatures(const std::vector<Token>& tokens,
|
const EmbeddingExecutor* embedding_executor,
|
std::vector<float>* output_features) const;
|
|
int GetTokenEmbeddingSize() const;
|
|
const Tokenizer* tokenizer() const { return tokenizer_.get(); }
|
|
private:
|
const ActionsTokenFeatureProcessorOptions* options_;
|
const std::unique_ptr<Tokenizer> tokenizer_;
|
const TokenFeatureExtractor token_feature_extractor_;
|
};
|
|
} // namespace libtextclassifier3
|
|
#endif // LIBTEXTCLASSIFIER_ACTIONS_FEATURE_PROCESSOR_H_
|
