The cosine distance (or cosine similarity). More...

Public Member Functions
template<typename Archive >
void	Serialize (Archive &, const unsigned int)
	Serialize the class (there's nothing to save). More...

Static Public Member Functions
template<typename VecTypeA , typename VecTypeB >
static double	Evaluate (const VecTypeA &a, const VecTypeB &b)
	Computes the cosine distance between two points. More...

Detailed Description

The cosine distance (or cosine similarity).

It is defined by

$d(a, b) = \frac{a^T b}{|| a || || b ||}$

and this class assumes the standard L2 inner product.

Definition at line 31 of file cosine_distance.hpp.

Member Function Documentation

template<typename VecTypeA , typename VecTypeB >

static double mlpack::kernel::CosineDistance::Evaluate	(	const VecTypeA &	a,
		const VecTypeB &	b
	)

static

Computes the cosine distance between two points.

Parameters

a	First vector.
b	Second vector.

template<typename Archive >

void mlpack::kernel::CosineDistance::Serialize	(	Archive &	,
		const unsigned	int
	)

inline

Serialize the class (there's nothing to save).

Definition at line 46 of file cosine_distance.hpp.

The documentation for this class was generated from the following file: