File body_empty.hpp

class EmptyBody : public IBody
#include <body_empty.hpp>

An empty body that does not contain any conditions and therefore covers any examples.

Public Functions

virtual bool covers(View<const float32>::const_iterator begin, View<const float32>::const_iterator end) const override

Returns whether an individual example, which is stored in a C-contiguous matrix, is covered or not.

Parameters:

  • begin – An iterator to the beginning of the example’s feature values

  • end – An iterator to the end of the example’s feature values

Returns:

True, if the example is covered, false otherwise

virtual bool covers(View<uint32>::const_iterator indicesBegin, View<uint32>::const_iterator indicesEnd, View<float32>::const_iterator valuesBegin, View<float32>::const_iterator valuesEnd, float32 sparseValue, View<float32>::iterator tmpArray1, View<uint32>::iterator tmpArray2, uint32 n) const override

Returns whether an individual example, which is stored in a CSR sparse matrix, is covered or not.

Parameters:

  • indicesBegin – An iterator to the beginning of the example’s feature values

  • indicesEnd – An iterator to the end of the example’s feature values

  • valuesBegin – An iterator to the beginning of the example’s feature_indices

  • valuesEnd – An iterator to the end of the example’s feature indices

  • sparseValue – The value that should be used for sparse feature values

  • tmpArray1 – An iterator that is used to temporarily store non-zero feature values. May contain arbitrary values

  • tmpArray2 – An iterator that is used to temporarily keep track of the feature indices with non-zero feature values. Must not contain any elements with value n

  • n – An arbitrary number. If this function is called multiple times for different examples, but using the same tmpArray2, the number must be unique for each of the function invocations

Returns:

True, if the example is covered, false otherwise

virtual void visit(EmptyBodyVisitor emptyBodyVisitor, ConjunctiveBodyVisitor conjunctiveBodyVisitor) const override

Invokes one of the given visitor functions, depending on which one is able to handle this particular type of body.

Parameters:

  • emptyBodyVisitor – The visitor function for handling objects of the type EmptyBody

  • conjunctiveBodyVisitor – The visitor function for handling objects of the type ConjunctiveBody