|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES All Classes | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectde.jstacs.algorithms.optimization.termination.AbstractTerminationCondition
de.jstacs.algorithms.optimization.termination.AbsoluteValueCondition
public class AbsoluteValueCondition
This class stops an optimization if the value of the function
becomes less or equal to an absolute value, i.e.,
.
Nested Class Summary | |
---|---|
static class |
AbsoluteValueCondition.AbsoluteValueConditionParameterSet
Deprecated. This class implements the parameter set for a AbsoluteValueCondition . |
Nested classes/interfaces inherited from class de.jstacs.algorithms.optimization.termination.AbstractTerminationCondition |
---|
AbstractTerminationCondition.AbstractTerminationConditionParameterSet |
Field Summary |
---|
Fields inherited from class de.jstacs.algorithms.optimization.termination.AbstractTerminationCondition |
---|
parameter |
Constructor Summary | |
---|---|
AbsoluteValueCondition(AbsoluteValueCondition.AbsoluteValueConditionParameterSet parameter)
Deprecated. This is the main constructor creating an instance from a given parameter set. |
|
AbsoluteValueCondition(double threshold)
Deprecated. This constructor creates an instance that stops an minimization when the value of the function is below the given threshold
Be careful! |
|
AbsoluteValueCondition(StringBuffer xml)
Deprecated. The standard constructor for the interface Storable . |
Method Summary | |
---|---|
boolean |
doNextIteration(int iteration,
double f_last,
double f_current,
double[] gradient,
double[] direction,
double alpha,
Time t)
Deprecated. This method allows to decide whether to do another iteration in an optimization or not. |
protected String |
getXmlTag()
Deprecated. This method returns the xml tag that is used in the method AbstractTerminationCondition.toXML() and
in the constructor AbstractTerminationCondition.AbstractTerminationCondition(StringBuffer) . |
boolean |
isSimple()
Deprecated. This method returns false if the TerminationCondition uses either
the gradient or the direction for the decision, otherwise it returns true . |
protected void |
set()
Deprecated. This method sets internal member variables from AbstractTerminationCondition.parameter . |
Methods inherited from class de.jstacs.algorithms.optimization.termination.AbstractTerminationCondition |
---|
clone, getCurrentParameterSet, toXML |
Methods inherited from class java.lang.Object |
---|
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public AbsoluteValueCondition(double threshold) throws Exception
threshold
threshold
- the threshold for stopping the optimization
Exception
- if the parameter can not be set properlypublic AbsoluteValueCondition(AbsoluteValueCondition.AbsoluteValueConditionParameterSet parameter) throws CloneNotSupportedException
parameter
- the set of parameters
CloneNotSupportedException
- if parameter
can not be cloned properly.public AbsoluteValueCondition(StringBuffer xml) throws NonParsableException
Storable
.
Constructs a AbsoluteValueCondition
out of an XML representation.
xml
- the XML representation as StringBuffer
NonParsableException
- if the AbsoluteValueCondition
could not be reconstructed out of
the StringBuffer
xml
Method Detail |
---|
protected void set()
AbstractTerminationCondition
AbstractTerminationCondition.parameter
.
It is used in the constructors.
set
in class AbstractTerminationCondition
protected String getXmlTag()
AbstractTerminationCondition
AbstractTerminationCondition.toXML()
and
in the constructor AbstractTerminationCondition.AbstractTerminationCondition(StringBuffer)
.
getXmlTag
in class AbstractTerminationCondition
public boolean doNextIteration(int iteration, double f_last, double f_current, double[] gradient, double[] direction, double alpha, Time t)
TerminationCondition
true
it is recommended to do another iteration, otherwise
(the method returns false
and) it is recommended to stop the algorithm.
iteration
- the number of performed iterationsf_last
- last value of the functionf_current
- current value of the functiongradient
- the gradient of the functiondirection
- the last direction of the optimizationalpha
- the last step sizet
- a time object measuring the time that has been elapsed in the optimization
true
if another iteration should be donepublic boolean isSimple()
TerminationCondition
false
if the TerminationCondition
uses either
the gradient or the direction for the decision, otherwise it returns true
.
false
for gradient or direction based TerminationCondition
s
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES All Classes | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |