File weight_vector_bit.hpp

class BitWeightVector : public IWeightVector
#include <weight_vector_bit.hpp>

An one-dimensional vector that provides random access to a fixed number of binary weights stored in a BitVector.

Public Functions

BitWeightVector(uint32 numElements, bool init = false)
Parameters:

  • numElements – The number of elements in the vector

  • init – True, if all elements in the vector should be value-initialized, false otherwise

uint32 getNumElements() const

Returns the number of elements in the vector.

Returns:

The number of elements

bool operator[](uint32 pos) const

Returns the weight at a specific position.

Parameters:

pos – The position

Returns:

The weight at the specified position

void set(uint32 pos, bool weight)

Sets the weight at a specific position.

Parameters:

  • pos – The position

  • weight – The weight to be set

void clear()

Sets all weights to zero.

uint32 getNumNonZeroWeights() const

Returns the number of non-zero weights.

Returns:

The number of non-zero weights

void setNumNonZeroWeights(uint32 numNonZeroWeights)

Sets the number of non-zero weights.

Parameters:

numNonZeroWeights – The number of non-zero weights to be set

virtual bool hasZeroWeights() const override

Returns whether the vector contains any zero weights or not.

Returns:

True, if the vector contains any zero weights, false otherwise

virtual std::unique_ptr<IFeatureSubspace> createFeatureSubspace(IFeatureSpace &featureSpace) const override

Creates and returns a new instance of type IFeatureSubspace that uses the weights in this vector for the training examples it includes.

Parameters:

featureSpace – A reference to an object of type IFeatureSpace that should be used to create the instance

Returns:

An unique pointer to an object of type IFeatureSubspace that has been created

Private Members

BitVector vector_
uint32 numNonZeroWeights_