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/*
* 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_UTILS_MATH_SOFTMAX_H_
#define LIBTEXTCLASSIFIER_UTILS_MATH_SOFTMAX_H_
#include <vector>
namespace libtextclassifier3 {
// Computes probability of a softmax label. Parameter "scores" is the vector of
// softmax logits. Returns 0.0f if "label" is outside the range [0,
// scores.size()).
float ComputeSoftmaxProbability(const std::vector<float> &scores, int label);
// Computes and returns a softmax for a given vector of floats. Parameter
// "scores" is the vector of softmax logits.
std::vector<float> ComputeSoftmax(const std::vector<float> &scores);
// Same as above but operates on an array of floats.
std::vector<float> ComputeSoftmax(const float *scores, int scores_size);
} // namespace libtextclassifier3
#endif // LIBTEXTCLASSIFIER_UTILS_MATH_SOFTMAX_H_