Exact and/or Fast Nearest Neighbors

6 Oct 2019Matthew Francis-LandauBenjamin Van Durme

Prior methods for retrieval of nearest neighbors in high dimensions are fast and approximate--providing probabilistic guarantees of returning the correct answer--or slow and exact performing an exhaustive search. We present Certified Cosine, a novel approach to nearest-neighbors which takes advantage of structure present in the cosine similarity distance metric to offer certificates... (read more)

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