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nla-group · Dec 6, 2023 · fb15139 · fb15139
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 SNN is a fast and exact fixed-radius nearest neighbor search algorithm [1]. It uses the first principal component of the data to prune the search space and speeds up Euclidean distance computations using high-level BLAS routines. SNN is implemented in native Python. On many problems, SNN is faster than KDtree and Balltree in the scikit-learn package. There is also a C++ implementation of SNN.