Header-only C++/python library for fast approximate nearest neighbors
C++ · active 2025-03-06 → 2026-07-28 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 510 days from 2025-03-06 to 2026-07-28. Pushes: 4 total, peak 1 in a day. Pull requests: 27 total, peak 5 in a day. Issues: 9 total, peak 2 in a day. Comments: 28 total, peak 7 in a day. Stars: 296 total, peak 7 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| michaelbautin | 11 | 1 | 3 | 5 |
| dyashuni | 8 | 2 | 3 | 3 |
| yurymalkov | 8 | 0 | 5 | 1 |
| Copilot | 8 | 0 | 0 | 7 |
| kiplingw | 5 | 0 | 0 | 3 |
| hunglongtrangithub | 4 | 0 | 3 | 1 |
| ilyajob05 | 4 | 1 | 3 | 0 |
| EmilienM | 3 | 0 | 1 | 2 |
| PingXie | 3 | 0 | 0 | 1 |
| sanketkedia | 3 | 0 | 3 | 0 |
| dyashunin-curie | 3 | 0 | 0 | 0 |
| manners99 | 2 | 0 | 2 | 0 |
| Anarion-zuo | 2 | 0 | 1 | 1 |
| claire082915 | 1 | 0 | 1 | 0 |
| egolearner | 1 | 0 | 0 | 1 |
| JohnSmithBH84 | 1 | 0 | 0 | 0 |
| kostasloukanaris | 1 | 0 | 1 | 0 |
| yairgott | 1 | 0 | 0 | 1 |
| martinloretzzz | 1 | 0 | 0 | 0 |
| vcodestar | 1 | 0 | 1 | 0 |
Recent activity
Latest issues, pull requests and releases
- Issue#667martinloretzzz2026-04-26 00:56Multithreading is disabled for small batches what slows down high-dimensional queries (Python bindings)
- Issue comment#649Anarion-zuo2026-03-30 16:03feat: add get_memory_usage
- Pull request#665hunglongtrangithub2026-03-29 00:39
- Issue comment#661hunglongtrangithub2026-03-28 23:08fix pointer type to guarantee correct alignment
- Pull request#661hunglongtrangithub2026-03-28 22:46
- Pull request#658ilyajob052026-03-28 22:38
- Issue comment#656yurymalkov2026-03-28 19:47[Fix] Serialization / deserialization of enter factor...
- Pull request#661hunglongtrangithub2026-03-27 03:16
- Issue comment#657kiplingw2026-03-26 06:42Added the NEON implementation for distance calculation and added the corresponding UT test.
- Pull request#659kostasloukanaris2026-03-25 21:37
- Issue comment#646EmilienM2026-03-23 00:01Fix setuptools.distutils import for Python 3.12+
- Pull request#651ilyajob052026-03-21 20:38
- Issue comment#651kiplingw2026-03-17 00:10Add generic serialization/deserialization interfaces (rebased #598)
- Pull request#651ilyajob052026-03-17 00:05
- Issue comment#648kiplingw2026-03-16 04:23[Feature Request] getMemoryUsage()
- Issue#648kiplingw2026-03-15 17:03[Feature Request] getMemoryUsage()
- Pull request#650Anarion-zuo2026-03-15 12:04
- Issue#648kiplingw2026-03-15 05:19[Feature Request] getMemoryUsage()
- Issue comment#635egolearner2026-03-05 03:04Potential Bug: M_ might be used incorrectly instead of Mcurmax in neighbor selection heuristic
- Issue comment#646EmilienM2026-02-25 00:57Fix setuptools.distutils import for Python 3.12+
- Pull request#646EmilienM2026-02-24 01:44
- Issue#642LTLA2026-01-28 05:34Consider making `saveIndex()` a `const` method?
- Pull request#640vcodestar2026-01-25 12:18
- Issue#639AmberLZY2026-01-21 03:50[Performance]Provides NEON Optimized Implementations for ARM in HNSWlib
- Issue comment#618ljluestc2025-12-25 03:42Getting High Latency on Small Dataset
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 296 stars here means stars gained during the window, not the repo's star count.