Distribution Sensitive Product Quantization.
IEEE Transactions on Circuits and Systems for Video Technology(2018)
摘要
Product quantization (PQ) seems to have become the most efficient framework of performing approximate nearest neighbor (ANN) search for high-dimensional data. However, almost all existing PQ-based ANN techniques uniformly allocate precious bit budget to each subspace. This is not optimal, because data are often not evenly distributed among different subspaces. A better strategy is to achieve an im...
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关键词
Quantization (signal),Distortion,Nearest neighbor methods,Optimization,Encoding,Bit rate,Aggregates
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