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Fix the problem of low recall rate of glass(hnsw) in multi-core environment #11

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Fix the problem of low recall rate of glass(hnsw) in multi-core environment #11

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5d719b2
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May 13, 2024
a199507
fix
May 13, 2024
840745b
fix
May 13, 2024
6347f2a
fix
May 14, 2024
90196b6
fix
May 14, 2024
04e3736
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May 14, 2024
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41 changes: 22 additions & 19 deletions glass/hnsw/hnsw.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -53,28 +53,31 @@ struct HNSW : public Builder {
printf("HNSW building cost: %.2lfs\n", ela);
final_graph.init(nb, 2 * M);
#pragma omp parallel for
for (int i = 0; i < nb; ++i) {
int *edges = (int *)hnsw->get_linklist0(i);
for (int j = 1; j <= edges[0]; ++j) {
final_graph.at(i, j - 1) = edges[j];
for (int i = 0; i < nb; ++i) {
auto internal_id = hnsw->label_lookup_[i];
int *edges = (int *)hnsw->get_linklist0(internal_id);
for (int j = 1; j <= edges[0]; ++j) {
int external_id = hnsw->getExternalLabel(edges[j]);
final_graph.at(i, j - 1) = external_id;
}
}
}
auto initializer = std::make_unique<HNSWInitializer>(nb, M);
initializer->ep = hnsw->enterpoint_node_;
for (int i = 0; i < nb; ++i) {
int level = hnsw->element_levels_[i];
initializer->levels[i] = level;
if (level > 0) {
initializer->lists[i].assign(level * M, -1);
for (int j = 1; j <= level; ++j) {
int *edges = (int *)hnsw->get_linklist(i, j);
for (int k = 1; k <= edges[0]; ++k) {
initializer->at(j, i, k - 1) = edges[k];
auto initializer = std::make_unique<HNSWInitializer>(nb, M);
initializer->ep = hnsw->getExternalLabel(hnsw->enterpoint_node_);
for (int i = 0; i < nb; ++i) {
auto internal_id = hnsw->label_lookup_[i];
int level = hnsw->element_levels_[internal_id];
initializer->levels[i] = level;
if (level > 0) {
initializer->lists[i].assign(level * M, -1);
for (int j = 1; j <= level; ++j) {
int *edges = (int *)hnsw->get_linklist(internal_id, j);
for (int k = 1; k <= edges[0]; ++k) {
initializer->at(j, i, k - 1) = hnsw->getExternalLabel(edges[k]);
}
}
}
}
}
}
final_graph.initializer = std::move(initializer);
final_graph.initializer = std::move(initializer);
}

Graph<int> GetGraph() override { return final_graph; }
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