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SigmoidFunction Class Reference

Sigmoid Function. More...

Inheritance diagram for SigmoidFunction:
Inheritance graph
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Public Member Functions

 SigmoidFunction (double l=1.0)
 Construct a sigmoid updater with parameter l. More...
 
virtual ~SigmoidFunction ()
 Destructor. More...
 
virtual void apply (DoubleVector &inputs, DoubleVector &outputs)
 Implement the updating method. More...
 
virtual void configure (ConfigurationParameters &params, QString prefix)
 Configures the object using a ConfigurationParameters object. More...
 
virtual bool derivate (const DoubleVector &x, const DoubleVector &y, DoubleVector &d) const
 return the approximation commonly used in backpropagation learning: y*(1-y) More...
 
virtual void save (ConfigurationParameters &params, QString prefix)
 Save the actual status of parameters into the ConfigurationParameters object passed. More...
 
- Public Member Functions inherited from OutputFunction
 OutputFunction ()
 Constructor. More...
 
virtual ~OutputFunction ()
 Destructor. More...
 
double apply (double input)
 Calculate the outputs of a single neuron. More...
 
void setCluster (Cluster *cl)
 Set the Cluster which it is inserted
This is automatically called, and in normal case you don't have to call it directly. More...
 
- Public Member Functions inherited from ParameterSettable
void addObserver (RuntimeParameterObserver *obs)
 
T getRuntimeParameter (QString paramName)
 
virtual ParameterSettableUI * getUIManager ()
 
virtual void postConfigureInitialization ()
 
void removeObserver (RuntimeParameterObserver *obs)
 
void setRuntimeParameter (QString paramName, T newvalue)
 
QString typeName () const
 

Public Attributes

double lambda
 lambda is the slope of the curve More...
 
- Public Attributes inherited from ParameterSettable
 AllowMultiple
 
 Default
 
 IsList
 
 IsMandatory
 

Additional Inherited Members

- Public Types inherited from ParameterSettable
enum  Property
 
- Static Public Member Functions inherited from ParameterSettable
static void describe (QString type)
 
static QString fullParameterDescriptionPath (QString type, QString param)
 
static QString fullSubgroupDescriptionPath (QString type, QString sub)
 
- Static Public Attributes inherited from ParameterSettable
static const double Infinity
 
static const int MaxInteger
 
static const int MinInteger
 
- Protected Member Functions inherited from OutputFunction
virtual void clusterSetted ()
 The method setCluster will call clusterSetted to inform subclasses that the OutputFunction has been inserted into a Cluster. More...
 
- Protected Member Functions inherited from ParameterSettable
void notifyChangesToParam (QString paramName)
 
- Static Protected Member Functions inherited from ParameterSettable
static Descriptor addTypeDescription (QString type, QString shortHelp, QString longHelp=QString(""))
 
static void setGraphicalEditor (QString type)
 
- Protected Attributes inherited from OutputFunction
Cluster * clusterv
 Cluster on which the OutputFunction is inserted. More...
 

Detailed Description

Sigmoid Function.

Details..

Definition at line 147 of file liboutputfunctions.h.

Constructor & Destructor Documentation

SigmoidFunction ( double  l = 1.0)

Construct a sigmoid updater with parameter l.

Definition at line 124 of file liboutputfunctions.cpp.

References SigmoidFunction::lambda.

virtual ~SigmoidFunction ( )
inlinevirtual

Destructor.

Definition at line 152 of file liboutputfunctions.h.

Member Function Documentation

void apply ( DoubleVector &  inputs,
DoubleVector &  outputs 
)
virtual

Implement the updating method.

Implements OutputFunction.

Definition at line 128 of file liboutputfunctions.cpp.

References SigmoidFunction::lambda.

void configure ( ConfigurationParameters &  params,
QString  prefix 
)
virtual

Configures the object using a ConfigurationParameters object.

Parameters
paramsthe configuration parameters object with parameters to use
prefixthe prefix to use to access the object configuration parameters. This is guaranteed to end with the separator character when called by the factory, so you don't need to add one

Implements ParameterSettableWithConfigureFunction.

Definition at line 144 of file liboutputfunctions.cpp.

References ConfigurationParameters::getValue(), and SigmoidFunction::lambda.

bool derivate ( const DoubleVector &  x,
const DoubleVector &  y,
DoubleVector &  d 
) const
virtual

return the approximation commonly used in backpropagation learning: y*(1-y)

Reimplemented from OutputFunction.

Definition at line 136 of file liboutputfunctions.cpp.

References SigmoidFunction::lambda.

void save ( ConfigurationParameters &  params,
QString  prefix 
)
virtual

Save the actual status of parameters into the ConfigurationParameters object passed.

Parameters
paramsthe configuration parameters object on which save actual parameters
prefixthe prefix to use to access the object configuration parameters.

Implements ParameterSettable.

Definition at line 157 of file liboutputfunctions.cpp.

References ConfigurationParameters::createParameter(), SigmoidFunction::lambda, and ConfigurationParameters::startObjectParameters().

Member Data Documentation

double lambda

lambda is the slope of the curve

Definition at line 177 of file liboutputfunctions.h.

Referenced by SigmoidFunction::apply(), SigmoidFunction::configure(), SigmoidFunction::derivate(), SigmoidFunction::save(), and SigmoidFunction::SigmoidFunction().

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