_annoy

High-level Python interface for the C++ ANNoy backend.

Spotify ANNoy [1] (Approximate Nearest Neighbors Oh Yeah).

Exports:

• Annoy → low-level C-extension type (stable) c-api powered new features

• AnnoyIndex → alias of Annoy (legacy AnnoyIndex name)

See also

• ANNoy

• cexternals/ANNoy

• spotify/annoy

• https://pypi.org/project/annoy

References

[1]

Spotify AB. (2013). “Approximate Nearest Neighbors Oh Yeah” Github. https://github.com/spotify/annoy

Examples

>>> import random; random.seed(0)
>>> # from annoy import Annoy, AnnoyIndex
>>> from scikitplot.cexternals._annoy import Annoy, AnnoyIndex
>>> from scikitplot.annoy import Annoy, AnnoyIndex, Index

>>> f = 40  # vector dimensionality
>>> t = AnnoyIndex(f, "angular")  # Length of item vector and metric
>>> t.add_item(0, [1] * f)
>>> t.build(10)  # Build 10 trees
>>> t.get_nns_by_item(0, 1)  # Find nearest neighbor