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build_one_graph.cpp
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build_one_graph.cpp
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#include <random>
#include <iostream>
#include <iomanip>
#include <fstream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <unordered_map>
#include <unordered_set>
#include <map>
#include <cmath>
#include <ctime>
#include <queue>
#include <vector>
#include <omp.h>
#include <limits>
#include <sys/time.h>
#include <set>
#include <algorithm>
#include <ctime>
#include "search_function.h"
using namespace std;
int main(int argc, char **argv) {
size_t d_v = 3;
if (argc == 2) {
d_v = atoi(argv[1]);
} else {
cout << " Need to specify parameters" << endl;
return 1;
}
time_t start, end;
const size_t n = 1000000; // number of points in base set
const size_t n_q = 10000; // number of points in query set
const size_t n_tr = 1;
const size_t d = d_v; // dimension of data
const size_t kl_size = 15; // KL graph size
size_t knn_size = 100;
float knn_angle = 1.25;
if (d == 3) {
knn_size = 20;
knn_angle = 1.8;
} else if (d == 5) {
knn_size = 60;
knn_angle = 1.8;
} else if (d == 9) {
knn_size = 300;
knn_angle = 1.6;
} else if (d == 17) {
knn_size = 2000;
knn_angle = 1.25;
}
float knn_thr = asin(knn_angle * pow(2, 0.5) * pow(n, - 1. / d));
CosMetric cos = CosMetric();
// LikeL2Metric ll2 = LikeL2Metric();
cout << "d = " << d << ", kl_size = " << kl_size << ", knn_size = " << knn_size << ", knn_thr = " << knn_thr << endl;
std::mt19937 random_gen;
std::random_device device;
random_gen.seed(device());
string path_data = "data/synthetic/synthetic";
string path_models = "models/synthetic/";
string dir_d = path_data + "_database_n_10_6_d_" + to_string(d) + ".fvecs";
const char *database_dir = dir_d.c_str(); // path to data
string dir_q = path_data + "_query_n_10_4_d_" + to_string(d) + ".fvecs";
const char *query_dir = dir_q.c_str(); // path to data
string dir_t = path_data + "_groundtruth_n_10_4_d_" + to_string(d) + ".ivecs";
const char *truth_dir = dir_t.c_str(); // path to data
string dir_knn = path_models + "knn_n_10_6_d_" + to_string(d) + ".ivecs";
const char *edge_knn_dir = dir_knn.c_str();
string dir_knn_thr = path_models + "knn_thr_n_10_6_d_" + to_string(d) + "_llt.ivecs";
const char *edge_knn_thr_dir = dir_knn_thr.c_str();
string dir_kl_sqrt = path_models + "kl_sqrt_style_n_10_6_d_" + to_string(d) + "_llt.ivecs";
const char *edge_kl_sqrt_dir = dir_kl_sqrt.c_str();
string dir_kl_n = path_models + "kl_n_style_n_10_6_d_" + to_string(d) + "_llt.ivecs";
const char *edge_kl_numb_dir = dir_kl_n.c_str();
string dir_kl_d = path_models + "kl_dist_style_n_10_6_d_" + to_string(d) + "_llt.ivecs";
const char *edge_kl_dist_dir = dir_kl_d.c_str();
string output = "results/synthetic_n_10_6_d_" + to_string(d) + "_llt.txt";
const char *output_txt = output.c_str();
remove(output_txt);
bool data_exist = FileExist(dir_d);
if (data_exist != true) {
std::cout << "Creating data" << std::endl;
vector<float> data = create_uniform_data(n_q + n, d, random_gen);
vector<float> queries;
for (int i=0; i < n_q*d; ++i) {
queries.push_back(data[i]);
}
vector<float> db;
for (int i=0; i < n*d; ++i) {
db.push_back(data[n_q*d + i]);
}
vector<uint32_t> truth = get_truth(db, queries, n, d, n_q, &cos);
std::ofstream data_input_db(database_dir, std::ios::binary);
writeXvec<float>(data_input_db, db.data(), d, n);
std::ofstream data_input_q(query_dir, std::ios::binary);
writeXvec<float>(data_input_q, queries.data(), d, n_q);
std::ofstream data_input_g(truth_dir, std::ios::binary);
writeXvec<uint32_t>(data_input_g, truth.data(), n_tr, n_q);
}
std::cout << "Loading data from " << database_dir << std::endl;
std::vector<float> db(n * d);
{
std::ifstream data_input(database_dir, std::ios::binary);
readXvec<float>(data_input, db.data(), d, n);
}
time(&start);
KLgraph kl_n;
kl_n.BuildByNumber(kl_size, db, n, d, random_gen, &cos);
time (&end);
cout << difftime(end, start) << endl;
write_edges(edge_kl_numb_dir, kl_n.longmatrixNN);
return 0;
}