Randomly rotate a set of vectors. More...

Inheritance diagram for faiss::RandomRotationMatrix:

Public Member Functions
	RandomRotationMatrix (int d_in, int d_out)
	both d_in > d_out and d_out < d_in are supported

void	init (int seed)
	must be called before the transform is used

void	train (Index::idx_t n, const float *x) override

Public Member Functions inherited from faiss::LinearTransform
	LinearTransform (int d_in=0, int d_out=0, bool have_bias=false)
	both d_in > d_out and d_out < d_in are supported

void	apply_noalloc (idx_t n, const float x, float xt) const override
	same as apply, but result is pre-allocated

void	transform_transpose (idx_t n, const float y, float x) const

void	reverse_transform (idx_t n, const float xt, float x) const override
	works only if is_orthonormal

void	set_is_orthonormal ()
	compute A^T * A to set the is_orthonormal flag

Public Member Functions inherited from faiss::VectorTransform
	VectorTransform (int d_in=0, int d_out=0)
	! output dimension

float *	apply (idx_t n, const float *x) const

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

Public Attributes inherited from faiss::LinearTransform
bool	have_bias

bool	is_orthonormal
	! whether to use the bias term More...

std::vector< float >	A
	Transformation matrix, size d_out * d_in.

std::vector< float >	b
	bias vector, size d_out

bool	verbose

Public Attributes inherited from faiss::VectorTransform
int	d_in

int	d_out
	! input dimension

bool	is_trained

Detailed Description

Randomly rotate a set of vectors.

Definition at line 115 of file VectorTransform.h.

Member Function Documentation

void RandomRotationMatrix::train	(	Index::idx_t	n,
		const float *	x
	)

overridevirtual

Perform training on a representative set of vectors. Does nothing by default.

Parameters

n	nb of training vectors
x	training vecors, size n * d

Definition at line 242 of file VectorTransform.cpp.

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