[Debian-med-packaging] Bug#980537: ITP: python-pynndescent -- nearest neighbor descent for approximate nearest neighbors
Andreas Tille
tille at debian.org
Wed Jan 20 09:32:41 GMT 2021
Package: wnpp
Severity: wishlist
Subject: ITP: python-pynndescent -- nearest neighbor descent for approximate nearest neighbors
Package: wnpp
Owner: Andreas Tille <tille at debian.org>
Severity: wishlist
* Package name : python-pynndescent
Version : 0.5.1
Upstream Author : "Leland McInnes <leland.mcinnes at gmail.com>
* URL : https://pypi.org/project/pynndescent/
* License : BSD-2-Clause
Programming Lang: Python
Description : nearest neighbor descent for approximate nearest neighbors
PyNNDescent is a Python nearest neighbor descent for approximate nearest
neighbors. It provides a python implementation of Nearest Neighbor
Descent for k-neighbor-graph construction and approximate nearest
neighbor search, as per the paper:
.
Dong, Wei, Charikar Moses, and Kai Li. "Efficient k-nearest neighbor
graph construction for generic similarity measures." Proceedings of the
20th international conference on World wide web. ACM, 2011.
.
This library supplements that approach with the use of random projection
trees for initialisation. This can be particularly useful for the
metrics that are amenable to such approaches (euclidean, minkowski,
angular, cosine, etc.). Graph diversification is also performed, pruning
the longest edges of any triangles in the graph.
.
Currently this library targets relatively high accuracy (80%-100%
accuracy rate) approximate nearest neighbor searches.
Remark: This package is maintained by Debian Med Packaging Team at
https://salsa.debian.org/med-team/python-pynndescent
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