knowhere-v1.3.17

Release : knowhere-v1.3.17

What's Changed

• Add new interface HasRawData (#947)
• HasRawData() returns True for HNSW only, and let GetVectorByIds() gets dim from index data (#957)

Full Changelog: v1.3.16...v1.3.17

knowhere-v1.3.16

Release : knowhere-v1.3.16

What's Changed

• For HNSW, the range of ef is changed to k to max. And ef is not required to be in the config anymore, default value will be max(k, 16).
• For DiskANN, the range of search_list is now changed to k to max. Also search_list doesn't have to be in the config, and a default value of max(k, 16) will be set.

Full Changelog: v1.3.15...v1.3.16

knowhere-v1.3.15

Release Note

Enhancement

• Set Build & Search default params for all index types except Annoy (#908 #909)
• Modify the search list size if this value not set in struct or too small (#911)

Full Changelog: v1.3.14...v1.3.15

knowhere-v1.3.14

Release Note

Knowhere-1.3.14

Knowhere-v1.3.14 is a bug fix version solving some existed issues.

Bug Fix

• Set DiskANN filter threshold to default value when missing (#897)
• Fix the lower recall issue in DiskANN when using metric IP with unnormalized data (#904)

Full Changelog: v1.3.13...v1.3.14

knowhere-v1.3.13

Release Note

Knowhere-1.3.13

• Added LRU cache for the entry point of HNSW and DiskANN to speed up similar requests. #843
• Used Brute Force in HNSW to improve performance when the filter rate is too high. #861
• Used PQ Based Brute Force + Refine in DiskANN when the filter rate is too high. #861

Bug fix

• This fix resolves the issue where DiskANN is unable to locate the first vector of an index #854.

Full Changelog: v1.3.12...v1.3.13

knowhere-v1.3.12

Release : knowhere-v1.3.12

What's Changed

• Fix DiskANN Access Invalid Address when Query with Bitset (#798) by @PwzXxm in #806
• Change the Ef limit for HNSW when topk is large by @xiaofan-luan in #809

Full Changelog: v1.3.11...v1.3.12

knowhere-v1.3.11

Release Note

Knowhere-1.3.11

Knowhere v1.3.11 is a bug fix version solving some exited issues.

Enhancement

• More logs in DiskANN/HNSW build process #747 #760

Bug Fix

• Fix potential overflow issue in DiskANN #741
• Add Sanity Check, Query after Build #764

Full Changelog: v1.3.10...v1.3.11

Knowhere 2.1.0 Beta

Release Note

Knowhere-2.1.0 Beta

We are happy to announce the release of Knowhere 2.1.0 Beta! Knowhere 2.1.0 newly supports RAFT GPU-based IVF index and FAISS GPU-based IVF index.

Special Thanks

@wphicks @cjnolet from NVIDIA contributed the RAFT integration code!

Breaking Change

• Support FAISS GPU-based IVF-series indexes. (#708)
• Support RAFT GPU-based IVF-series indexes. (#712, #734)

RAFT is an open-source library for GPU-based ANN search, developed by Nvidia. It offers impressive performance and a dependable GPU-based ANN index. With Knowhere 2.1.0, Nvidia has incorporated its advanced GPU solutions to enhance Knowhere's capabilities.

We conducted benchmark tests on RAFT's GPU-based IVF-series indexes and achieved remarkable results. All benchmarks are conducted in a host of 8c32g, and an Nvidia A100 GPU. NQ in these benchmarks are 100.

Benchmark1

First we did some comparison between RAFT-IVF-Flat with IVF-Flat and HNSW at 95% recall.

DataSets	SIFT	GIST	GLOVE	DEEP
HNSW (VPS)	14,537	791	1,516	5,761
IVF-Flat (VPS)	3,097	142	791	723
RAFT-IVF-Flat (VPS)	121,568	5,737	20,163	16,557

Benchmark2

Also we benchmarked RAFT-IVF-PQ comparing Knowhere's fastest index HNSW at 80% recall.

DataSets	SIFT	GIST	GLOVE	DEEP
HNSW (VPS)	20,809	2,593	8,005	13,291
RAFT-IVF-PQ (VPS)	271,885	7,448	38,989	80,363

Enhancement

• Improve performance of CPU-based IVF-series and BruteForce. (#703)
  • Related Issue: milvus-io/milvus#22163

Bug fix

• Fix TANIMOTO distance calculation error in BruteFoce. (#719)

New Contributors

• @wphicks made their first contribution in #712

knowhere-v1.3.1-hotfix

Release : knowhere-v1.3.1-hotfix

knowhere-v1.3.10

Release : knowhere-v1.3.10