1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_ 18 #define LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_ 19 20 #include "utils/base/integral_types.h" 21 22 namespace libtextclassifier3 { 23 24 // Returns true if the quantization parameters are valid. 25 bool CheckQuantizationParams(int bytes_per_embedding, int quantization_bits, 26 int output_embedding_size); 27 28 // Dequantizes embeddings (quantized to 1 to 8 bits) into the floats they 29 // represent. The algorithm proceeds by reading 2-byte words from the embedding 30 // storage to handle well the cases when the quantized value crosses the byte- 31 // boundary. 32 bool DequantizeAdd(const float* scales, const uint8* embeddings, 33 int bytes_per_embedding, int num_sparse_features, 34 int quantization_bits, int bucket_id, float* dest, 35 int dest_size); 36 37 } // namespace libtextclassifier3 38 39 #endif // LIBTEXTCLASSIFIER_ANNOTATOR_QUANTIZATION_H_ 40