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https://github.com/PaddlePaddle/PaddleClas.git
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65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
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// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <faiss/index_factory.h>
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#include <faiss/index_io.h>
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#include <fstream>
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#include <regex>
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#include <iostream>
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#include <cstdio>
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#include "include/vector_search.h"
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void VectorSearch::LoadIndexFile(){
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std::string file_path = this->index_dir + OS_PATH_SEP + "vector.index";
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const char* fname = file_path.c_str();
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this->index = faiss::read_index(fname, 0);
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}
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void VectorSearch::LoadIdMap(){
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std::string file_path = this->index_dir + OS_PATH_SEP + "id_map.txt";
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std::ifstream in(file_path);
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std::string line;
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std::vector<std::string> m_vec;
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if (in){
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while (getline(in, line)){
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std::regex ws_re("\\s+");
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std::vector<std::string> v(
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std::sregex_token_iterator(line.begin(), line.end(), ws_re, -1),
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std::sregex_token_iterator());
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if (v.size() !=2){
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std::cout << "The number of element for each line in : " << file_path
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<< "must be 2, exit the program..." << std::endl;
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exit(1);
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}else
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this->id_map.insert(std::pair<long int, std::string>(std::stol(v[0], nullptr, 10), v[1]));
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}
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}
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}
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void VectorSearch::Search(float *feature, int query_number){
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this->index->search(query_number, feature, return_k, D, I);
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this->real_query_number = query_number;
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}
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const SearchResult& VectorSearch::GetSearchResult(){
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this->sr.query_number = this->real_query_number;
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this->sr.return_k = this->return_k;
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this->sr.D = this->D;
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this->sr.I = this->I;
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return this->sr;
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}
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const std::string& VectorSearch::GetLabel(faiss::Index::idx_t ind){
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return this->id_map.at(ind);
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}
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