defaults.h

// 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 = 500;

// 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;

const bool DIVERSE_INDEX = false;
const std::string EMPTY_STRING = "";
const bool NUM_DIVERSE_BUILD = 1;

const bool REORDER_INDEX = false;
const uint32_t REORDER_DIM = 0;
const bool ATTRIBUTE_DIVERSITY = false;
const float ATTR_DIST_THRESHOLD = 0.2f;

} // namespace defaults
} // namespace diskann