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packages/leann-backend-diskann/third_party/DiskANN/include/defaults.h

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+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT license.
+
+#pragma once
+#include <stdint.h>
+
+namespace diskann
+{
+namespace defaults
+{
+const float ALPHA = 1.2f;
+const uint32_t NUM_THREADS = 0;
+const uint32_t MAX_OCCLUSION_SIZE = 750;
+const bool HAS_LABELS = false;
+const uint32_t FILTER_LIST_SIZE = 0;
+const uint32_t NUM_FROZEN_POINTS_STATIC = 0;
+const uint32_t NUM_FROZEN_POINTS_DYNAMIC = 1;
+
+// In-mem index related limits
+const float GRAPH_SLACK_FACTOR = 1.3f;
+
+// SSD Index related limits
+const uint64_t MAX_GRAPH_DEGREE = 512;
+const uint64_t SECTOR_LEN = 4096;
+const uint64_t MAX_N_SECTOR_READS = 128;
+
+// following constants should always be specified, but are useful as a
+// sensible default at cli / python boundaries
+const uint32_t MAX_DEGREE = 64;
+const uint32_t BUILD_LIST_SIZE = 100;
+const uint32_t SATURATE_GRAPH = false;
+const uint32_t SEARCH_LIST_SIZE = 100;
+} // namespace defaults
+} // namespace diskann