Package moa.streams.clustering
Class FileStream
- java.lang.Object
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- moa.AbstractMOAObject
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- moa.options.AbstractOptionHandler
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- moa.streams.clustering.ClusteringStream
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- moa.streams.clustering.FileStream
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- All Implemented Interfaces:
Configurable
,Serializable
,CapabilitiesHandler
,MOAObject
,OptionHandler
,ExampleStream<Example<Instance>>
,InstanceStream
public class FileStream extends ClusteringStream
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description FileOption
arffFileOption
IntOption
classIndexOption
protected InputStreamProgressMonitor
fileProgressMonitor
protected Reader
fileReader
protected boolean
hitEndOfFile
protected Instances
instances
FlagOption
keepNonNumericalAttrOption
protected InstanceExample
lastInstanceRead
FlagOption
normalizeOption
protected int
numInstancesRead
ListOption
removeAttributesOption
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Fields inherited from class moa.streams.clustering.ClusteringStream
decayHorizonOption, decayThresholdOption, evaluationFrequencyOption, numAttsOption
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Fields inherited from class moa.options.AbstractOptionHandler
config
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Constructor Summary
Constructors Constructor Description FileStream()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description long
estimatedRemainingInstances()
Gets the estimated number of remaining instances in this streamvoid
getDescription(StringBuilder sb, int indent)
Returns a string representation of this object.InstancesHeader
getHeader()
Gets the header of this stream.String
getPurposeString()
Dictionary with option texts and objectsboolean
hasMoreInstances()
Gets whether this stream has more instances to output.boolean
isRestartable()
Gets whether this stream can restart.InstanceExample
nextInstance()
Gets the next example from this stream.void
prepareForUseImpl(TaskMonitor monitor, ObjectRepository repository)
This method describes the implementation of how to prepare this object for use.protected ArrayList<Double[]>
readMinMaxDiffValues(HashSet<Integer> ignoredAttributes)
protected boolean
readNextInstanceFromFile()
void
restart()
Restarts this stream.-
Methods inherited from class moa.streams.clustering.ClusteringStream
getDecayHorizon, getDecayThreshold, getEvaluationFrequency
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Methods inherited from class moa.options.AbstractOptionHandler
copy, getCLICreationString, getOptions, getPreparedClassOption, prepareClassOptions, prepareForUse, prepareForUse
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Methods inherited from class moa.AbstractMOAObject
copy, measureByteSize, measureByteSize, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface moa.capabilities.CapabilitiesHandler
getCapabilities
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Methods inherited from interface moa.streams.ExampleStream
defineImmutableCapabilities
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Methods inherited from interface moa.MOAObject
measureByteSize
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Field Detail
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arffFileOption
public FileOption arffFileOption
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classIndexOption
public IntOption classIndexOption
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normalizeOption
public FlagOption normalizeOption
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removeAttributesOption
public ListOption removeAttributesOption
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keepNonNumericalAttrOption
public FlagOption keepNonNumericalAttrOption
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instances
protected Instances instances
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fileReader
protected Reader fileReader
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hitEndOfFile
protected boolean hitEndOfFile
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lastInstanceRead
protected InstanceExample lastInstanceRead
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numInstancesRead
protected int numInstancesRead
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fileProgressMonitor
protected InputStreamProgressMonitor fileProgressMonitor
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Method Detail
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getPurposeString
public String getPurposeString()
Description copied from class:AbstractOptionHandler
Dictionary with option texts and objects- Specified by:
getPurposeString
in interfaceOptionHandler
- Overrides:
getPurposeString
in classAbstractOptionHandler
- Returns:
- the string with the purpose of this object
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prepareForUseImpl
public void prepareForUseImpl(TaskMonitor monitor, ObjectRepository repository)
Description copied from class:AbstractOptionHandler
This method describes the implementation of how to prepare this object for use. All classes that extends this class have to implementprepareForUseImpl
and notprepareForUse
sinceprepareForUse
callsprepareForUseImpl
.- Specified by:
prepareForUseImpl
in classAbstractOptionHandler
- Parameters:
monitor
- the TaskMonitor to userepository
- the ObjectRepository to use
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getHeader
public InstancesHeader getHeader()
Description copied from interface:ExampleStream
Gets the header of this stream. This is useful to know attributes and classes. InstancesHeader is an extension of weka.Instances.- Returns:
- the header of this stream
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estimatedRemainingInstances
public long estimatedRemainingInstances()
Description copied from interface:ExampleStream
Gets the estimated number of remaining instances in this stream- Returns:
- the estimated number of instances to get from this stream
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hasMoreInstances
public boolean hasMoreInstances()
Description copied from interface:ExampleStream
Gets whether this stream has more instances to output. This is useful when reading streams from files.- Returns:
- true if this stream has more instances to output
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nextInstance
public InstanceExample nextInstance()
Description copied from interface:ExampleStream
Gets the next example from this stream.- Returns:
- the next example of this stream
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isRestartable
public boolean isRestartable()
Description copied from interface:ExampleStream
Gets whether this stream can restart.- Returns:
- true if this stream can restart
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restart
public void restart()
Description copied from interface:ExampleStream
Restarts this stream. It must be similar to starting a new stream from scratch.
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readNextInstanceFromFile
protected boolean readNextInstanceFromFile()
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readMinMaxDiffValues
protected ArrayList<Double[]> readMinMaxDiffValues(HashSet<Integer> ignoredAttributes)
- Parameters:
ignoredAttributes
- Attributes that will be ignored- Returns:
- A list with min/max and diff=max-min values per attribute of the arff file
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getDescription
public void getDescription(StringBuilder sb, int indent)
Description copied from interface:MOAObject
Returns a string representation of this object. Used inAbstractMOAObject.toString
to give a string representation of the object.- Parameters:
sb
- the stringbuilder to add the descriptionindent
- the number of characters to indent
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