File rule_pruning.hpp

class IRulePruning
#include <rule_pruning.hpp>

Defines an interface for all classes that implement a strategy for pruning individual rules based on a “prune set”, i.e., based on the examples that are not contained in the sub-sample of the training data that has been used to learn the rule, referred to as the “grow set”.

Public Functions

inline virtual ~IRulePruning()
virtual std::unique_ptr<CoverageMask> prune(IFeatureSubspace &featureSubspace, IPartition &partition, ConditionList &conditions, const IPrediction &head) const = 0

Prunes the conditions of an existing rule by modifying a given list of conditions in-place. The rule is pruned by removing individual conditions in a way that improves over its original quality, measured on the prune set.

Parameters:

  • featureSubspace – A reference to an object of type IFeatureSubspace that includes the training examples covered by the existing rule

  • partition – A reference to an object of type IPartition that provides access to the indices of the training examples that belong to the training set and the holdout set, respectively

  • conditions – A reference to an object of type ConditionList that stores the conditions of the existing rule

  • head – A reference to an object of type IPrediction that stores the scores that are predicted by the existing rule

Returns:

An unique pointer to an object of type CoverageMask that keeps track of the examples that are covered by the pruned rule or a null pointer if the rule was not pruned

class IRulePruningFactory
#include <rule_pruning.hpp>

Defines an interface for all factories that allow to create instances of the type IRulePruning.

Public Functions

inline virtual ~IRulePruningFactory()
virtual std::unique_ptr<IRulePruning> create() const = 0

Creates and returns a new object of type IRulePruning.

Returns:

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

class IRulePruningConfig
#include <rule_pruning.hpp>

Defines an interface for all classes that allow to configure a strategy for pruning individual rules.

Subclassed by IrepConfig, NoRulePruningConfig

Public Functions

inline virtual ~IRulePruningConfig()
virtual std::unique_ptr<IRulePruningFactory> createRulePruningFactory() const = 0

Creates and returns a new object of type IRulePruningFactory according to the specified configuration.

Returns:

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