Stacked Quantizers for Compositional Vector Compression

8 Nov 2014Julieta MartinezHolger H. HoosJames J. Little

Recently, Babenko and Lempitsky introduced Additive Quantization (AQ), a generalization of Product Quantization (PQ) where a non-independent set of codebooks is used to compress vectors into small binary codes. Unfortunately, under this scheme encoding cannot be done independently in each codebook, and optimal encoding is an NP-hard problem... (read more)

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