IVF_PQ_FS

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IVF_PQ_FS is the optimized version of IVF_PQ that uses SIMD to speed up search in a low-dimensional space. Currently the constraint of nbits parameter is 4.

Building parameters:

Vectors	Types	Range
nlist	Number of cluster units	[1,65536]
m	Number of factors of product quantization	Needs to be divisible by vector dimension

Table 15 Building Parameter of IVF_PQ_FS

Search parameters:

Vectors	Types	Range
nprobe	Number of units to query	[1, nlist]

Table 16 Search Parameter of IVF_PQ_FS

Updated 7 months ago