CFeatureCalculator Class Reference
Base class for all
Feature Calculators. More...
#include <cstatemodifier.h>
Inheritance diagram for CFeatureCalculator:
List of all
members.
Detailed Description
Base class for all Feature Calculators.
Features always have a unique feature index and a feature
activation factor, they are used for linear approximators. Feature
calculators determine the feature activation factors of a feature
state. A feature state consists of N discrete and continuous state
variables, each pair represents a feature. All features which are
not listed in a feature state have an activation factor of 0.0, so
N is the maximum number of active features in a feature state.
- The CFeatureCalculator class is the interface of all other
feature calculators, it sets the state properties
(numActiveFeatures continuous + discrete states, min = 0, max = 1.0
of all continuous states, and numFeatures is the discrete state
size of all discrete state variables)
- It also provides functions for setting the original state. The
original state is used by all feature calculators as the "working"
state. This is per default the model state, but can be set
differently if needed.
- The feature calculation itself is implemented by the subclasses
in the function getModifiedState.
Constructor & Destructor Documentation
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CFeatureCalculator::CFeatureCalculator
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[protected] |
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CFeatureCalculator::CFeatureCalculator
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( |
unsigned int |
numFeatures,
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unsigned int |
numActiveFeatures |
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) |
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| virtual
CFeatureCalculator::~CFeatureCalculator
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[inline,
virtual] |
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Member Function Documentation
| virtual unsigned int
CFeatureCalculator::getDiscreteStateSize
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[virtual] |
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returns the discrete state size of all discrete states together
(i.e the product of all sizes)
Reimplemented from CStateProperties.
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| virtual unsigned int
CFeatureCalculator::getDiscreteStateSize
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unsigned int |
i |
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[virtual] |
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Returns the discrete state size of the dim th state.
Reimplemented from CStateProperties.
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| virtual double
CFeatureCalculator::getMax
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unsigned int |
i |
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[virtual] |
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| virtual double
CFeatureCalculator::getMin
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unsigned int |
i |
) |
[virtual] |
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| virtual unsigned int
CFeatureCalculator::getNumActiveFeatures
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[virtual] |
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| virtual unsigned int
CFeatureCalculator::getNumFeatures
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[virtual] |
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Sets the original state.
The original state is used by all feature calculators as the
"working" state. This is per default the model state, but can be
set differently if needed.
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| void
CFeatureCalculator::initFeatureCalculator
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unsigned int |
numFeatures,
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unsigned int |
numActiveFeatures |
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[protected] |
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sets the state properties
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| void
CFeatureCalculator::normalizeFeatures
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CState *
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featState |
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[protected] |
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Normalizes all active features of the given feature state.
Normalizes the feature factors so that the sum of all factors
equals 1.0.
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| void
CFeatureCalculator::setOriginalState
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( |
CStateProperties *
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originalState |
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[inline] |
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Member Data Documentation
The documentation for this class was generated from the following
file:
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