A distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.

A simple and modern C++ quadtree implementation

Gaussian-Processes Surrogate Optimisation in python

Various data structure implementations in Python

Space Partitioning for Open Worlds

Ruby implementation of space partitioning tree

A balanced k-d tree which can partition three-dimensional space to organize/insert objects. Search operation is also available.