Package weka.knowledgeflow.steps

Class IncrementalClassifierEvaluator

java.lang.Object

weka.knowledgeflow.steps.BaseStep

weka.knowledgeflow.steps.IncrementalClassifierEvaluator

All Implemented Interfaces:

Serializable, BaseStepExtender, Step

@KFStep(name="IncrementalClassifierEvaluator",
        category="Evaluation",
        toolTipText="Evaluate the performance of incrementally training classifiers",
        iconPath="weka/gui/knowledgeflow/icons/IncrementalClassifierEvaluator.gif")
public class IncrementalClassifierEvaluator
extends BaseStep

Step that evaluates incremental classifiers and produces strip chart data

Version:

$Revision: $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
IncrementalClassifierEvaluator()

Method Summary

Modifier and Type	Method	Description
String	chartingEvalWindowSizeTipText()	Return a tip text string for this property
int	getChartingEvalWindowSize()	Get whether to compute evaluation for charting over a fixed sized window of the most recent instances (rather than the whole stream).
List<String>	getIncomingConnectionTypes()	Get a list of incoming connection types that this step can accept.
List<String>	getOutgoingConnectionTypes()	Get a list of outgoing connection types that this step can produce.
boolean	getOutputPerClassInfoRetrievalStats()	Get whether per-class information retrieval stats are to be output.
int	getStatusFrequency()	Get how often progress is reported to the status bar.
String	outputPerClassInfoRetrievalStatsTipText()	Return a tip text string for this property
void	processIncoming(Data data)	Process an incoming data payload (if the step accepts incoming connections)
void	setChartingEvalWindowSize(int windowSize)	Set whether to compute evaluation for charting over a fixed sized window of the most recent instances (rather than the whole stream).
void	setOutputPerClassInfoRetrievalStats(boolean i)	Set whether to output per-class information retrieval statistics (nominal class only).
void	setStatusFrequency(int s)	Set how often progress is reported to the status bar.
String	statusFrequencyTipText()	Return a tip text string for this property
void	stepInit()	Initialize the step.

Methods inherited from class weka.knowledgeflow.steps.BaseStep

environmentSubstitute, getCustomEditorForStep, getDefaultSettings, getInteractiveViewers, getInteractiveViewersImpls, getName, getStepManager, globalInfo, isResourceIntensive, isStopRequested, outputStructureForConnectionType, outputStructureForConnectionType, setName, setStepIsResourceIntensive, setStepManager, setStepMustRunSingleThreaded, start, stepMustRunSingleThreaded, stop

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

IncrementalClassifierEvaluator

public IncrementalClassifierEvaluator()

Method Details

stepInit

public void stepInit()
              throws WekaException

Initialize the step.

Throws:

WekaException - if a problem occurs during initialization

getIncomingConnectionTypes

public List<String> getIncomingConnectionTypes()

Get a list of incoming connection types that this step can accept. Ideally (and if appropriate), this should take into account the state of the step and any existing incoming connections. E.g. a step might be able to accept one (and only one) incoming batch data connection.

Returns:

a list of incoming connections that this step can accept given its current state

getOutgoingConnectionTypes

public List<String> getOutgoingConnectionTypes()

Get a list of outgoing connection types that this step can produce. Ideally (and if appropriate), this should take into account the state of the step and the incoming connections. E.g. depending on what incoming connection is present, a step might be able to produce a trainingSet output, a testSet output or neither, but not both.

Returns:

a list of outgoing connections that this step can produce

processIncoming

public void processIncoming(Data data)
                     throws WekaException

Process an incoming data payload (if the step accepts incoming connections)

Specified by:

processIncoming in interface BaseStepExtender

Specified by:

processIncoming in interface Step

Overrides:

processIncoming in class BaseStep

Parameters:

data - the payload to process

Throws:

WekaException - if a problem occurs

setStatusFrequency

public void setStatusFrequency(int s)

Set how often progress is reported to the status bar.

Parameters:

s - report progress every s instances

getStatusFrequency

public int getStatusFrequency()

Get how often progress is reported to the status bar.

Returns:

after how many instances, progress is reported to the status bar

statusFrequencyTipText

public String statusFrequencyTipText()

Return a tip text string for this property

Returns:

a string for the tip text

setOutputPerClassInfoRetrievalStats

public void setOutputPerClassInfoRetrievalStats(boolean i)

Set whether to output per-class information retrieval statistics (nominal class only).

Parameters:

i - true if info retrieval stats are to be output

getOutputPerClassInfoRetrievalStats

public boolean getOutputPerClassInfoRetrievalStats()

Get whether per-class information retrieval stats are to be output.

Returns:

true if info retrieval stats are to be output

outputPerClassInfoRetrievalStatsTipText

public String outputPerClassInfoRetrievalStatsTipText()

Return a tip text string for this property

Returns:

a string for the tip text

setChartingEvalWindowSize

public void setChartingEvalWindowSize(int windowSize)

Set whether to compute evaluation for charting over a fixed sized window of the most recent instances (rather than the whole stream).

Parameters:

windowSize - the size of the window to use for computing the evaluation metrics used for charting. Setting a value of zero or less specifies that no windowing is to be used.

getChartingEvalWindowSize

public int getChartingEvalWindowSize()

Get whether to compute evaluation for charting over a fixed sized window of the most recent instances (rather than the whole stream).

Returns:

the size of the window to use for computing the evaluation metrics used for charting. Setting a value of zero or less specifies that no windowing is to be used.

chartingEvalWindowSizeTipText

public String chartingEvalWindowSizeTipText()

Return a tip text string for this property

Returns:

a string for the tip text