hnswlib-to-go

Hnswlib to go. Golang interface to hnswlib(https://github.com/nmslib/hnswlib). This is a golang interface of hnswlib. For more information, please follow hnswlib and Efficient and robust approximate nearest neighbor search using Hierarchical Navigable Small World graphs..

But in this project, we make compatible hnswlib to 0.7.0.

Version

• version 1.0.4

  • Add UpdatePoint, UpdateBatchPoints APIs

• version 1.0.3

  • Add GetMaxElements, GetCurrentElementCount, GetDeleteCount, GetVectorByLabel APIs

• version 1.0.2

  • Update hnswlib compatible version to 0.7.0
  • Add AddBatchPoints, SearchBatchKNN, SetNormalize, ResizeIndex, MarkDelete, UnmarkDelete, GetLabelIsMarkedDeleted API

• version 1.0.1

  • Code format
  • Add an api support unload the graph(Experimental)

• version 1.0.0

  • hnswlib compatible version 0.5.2.

Build

• Linux/MacOS
  • Build Golang Env
  • go mod init
  • make

Usage

• When building golang program, please add export CGO_CXXFLAGS=-std=c++11 command before go build / run / test ...

argument	type
dim	int	vector dimension
M	int	seeALGO_PARAMS.md
efConstruction	int	seeALGO_PARAMS.md
randomSeed	int	random seed for hnsw
maxElements	int	max records in data
spaceType	str

spaceType	distance
ip	inner product
cosine	cosine similarity
l2	l2