faiss::RemapDimensionsTransform Struct Reference

#include <VectorTransform.h>

Inheritance diagram for faiss::RemapDimensionsTransform:

Public Member Functions
	RemapDimensionsTransform (int d_in, int d_out, const int *map)
	RemapDimensionsTransform (int d_in, int d_out, bool uniform=true)
void	apply_noalloc (idx_t n, const float *x, float *xt) const override
	same as apply, but result is pre-allocated
void	reverse_transform (idx_t n, const float *xt, float *x) const override
	reverse transform correct only when the mapping is a permuation
Public Member Functions inherited from faiss::VectorTransform
	VectorTransform (int d_in=0, int d_out=0)
	! output dimension
virtual void	train (idx_t n, const float *x)
float *	apply (idx_t n, const float *x) const

Public Attributes
std::vector< int >	map
Public Attributes inherited from faiss::VectorTransform
int	d_in
int	d_out
	! input dimension
bool	is_trained

Additional Inherited Members
Public Types inherited from faiss::VectorTransform
typedef Index::idx_t	idx_t

Detailed Description

remap dimensions for intput vectors, possibly inserting 0s strictly speaking this is also a linear transform but we don't want to compute it with matrix multiplies

Definition at line 203 of file VectorTransform.h.

Constructor & Destructor Documentation

RemapDimensionsTransform::RemapDimensionsTransform	(	int	d_in,
		int	d_out,
		bool	uniform = true
	)

remap input to output, skipping or inserting dimensions as needed if uniform: distribute dimensions uniformly otherwise just take the d_out first ones.

Definition at line 920 of file VectorTransform.cpp.

Member Data Documentation

std::vector<int> faiss::RemapDimensionsTransform::map

map from output dimension to input, size d_out -1 -> set output to 0

Definition at line 207 of file VectorTransform.h.

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The documentation for this struct was generated from the following files:

• /data/users/matthijs/github_faiss/faiss/VectorTransform.h
• /data/users/matthijs/github_faiss/faiss/VectorTransform.cpp