Class SequenceDataset<T extends Output<T>>

java.lang.Object

org.tribuo.sequence.SequenceDataset<T>

Type Parameters:

T - the type of the outputs in the data set.

All Implemented Interfaces:

com.oracle.labs.mlrg.olcut.provenance.Provenancable<DatasetProvenance>, Serializable, Iterable<SequenceExample<T>>

Direct Known Subclasses:

ImmutableSequenceDataset, MutableSequenceDataset

public abstract class SequenceDataset<T extends Output<T>>
extends Object
implements Iterable<SequenceExample<T>>, com.oracle.labs.mlrg.olcut.provenance.Provenancable<DatasetProvenance>, Serializable

A class for sets of data, which are used to train and evaluate classifiers.

Subclass either MutableSequenceDataset or ImmutableSequenceDataset rather than this class.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<SequenceExample<T>>	data	The data in this data set.
protected final OutputFactory<T>	outputFactory	A factory for making OutputInfo and Output of the appropriate type.
protected final DataProvenance	sourceProvenance	The provenance of the data source, extracted on construction.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SequenceDataset(DataProvenance sourceProvenance, OutputFactory<T> outputFactory)

Method Summary

Modifier and Type	Method	Description
List<SequenceExample<T>>	getData()	Returns an unmodifiable view on the data.
SequenceExample<T>	getExample(int index)	Gets the example at the specified index, or throws IllegalArgumentException if the index is out of bounds.
abstract ImmutableFeatureMap	getFeatureIDMap()	An immutable view on the feature map.
abstract FeatureMap	getFeatureMap()	The feature map.
Dataset<T>	getFlatDataset()	Returns a view on this SequenceDataset which aggregates all the examples and ignores the sequence structure.
OutputFactory<T>	getOutputFactory()	Gets the output factory.
abstract ImmutableOutputInfo<T>	getOutputIDInfo()	An immutable view on the output info in this dataset.
abstract OutputInfo<T>	getOutputInfo()	The output info in this dataset.
abstract Set<T>	getOutputs()	Gets the set of labels that occur in the examples in this dataset.
String	getSourceDescription()	Returns the description of the source provenance.
DataProvenance	getSourceProvenance()	Returns the source provenance.
Iterator<SequenceExample<T>>	iterator()
int	size()	Gets the size of the data set.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface com.oracle.labs.mlrg.olcut.provenance.Provenancable

getProvenance

Field Details

outputFactory

protected final OutputFactory<T extends Output<T>> outputFactory

A factory for making OutputInfo and Output of the appropriate type.

data

protected final List<SequenceExample<T extends Output<T>>> data

The data in this data set.

sourceProvenance

protected final DataProvenance sourceProvenance

The provenance of the data source, extracted on construction.

Constructor Details

SequenceDataset

protected SequenceDataset(DataProvenance sourceProvenance,
 OutputFactory<T> outputFactory)

Method Details

getSourceDescription

public String getSourceDescription()

Returns the description of the source provenance.

Returns:

The source provenance in text form.

getData

public List<SequenceExample<T>> getData()

Returns an unmodifiable view on the data.

Returns:

The data.

getSourceProvenance

public DataProvenance getSourceProvenance()

Returns the source provenance.

Returns:

The source provenance.

getOutputs

public abstract Set<T> getOutputs()

Gets the set of labels that occur in the examples in this dataset.

Returns:

the set of labels that occur in the examples in this dataset.

getExample

public SequenceExample<T> getExample(int index)

Gets the example at the specified index, or throws IllegalArgumentException if the index is out of bounds.

Parameters:

index - The index.

Returns:

The example at that index.

getFlatDataset

public Dataset<T> getFlatDataset()

Returns a view on this SequenceDataset which aggregates all the examples and ignores the sequence structure.

Returns:

A flattened view on this dataset.

size

public int size()

Gets the size of the data set.

Returns:

the size of the data set.

getOutputIDInfo

public abstract ImmutableOutputInfo<T> getOutputIDInfo()

An immutable view on the output info in this dataset.

Returns:

The output info.

getOutputInfo

public abstract OutputInfo<T> getOutputInfo()

The output info in this dataset.

Returns:

The output info.

getFeatureIDMap

public abstract ImmutableFeatureMap getFeatureIDMap()

An immutable view on the feature map.

Returns:

The feature map.

getFeatureMap

public abstract FeatureMap getFeatureMap()

The feature map.

Returns:

The feature map.

getOutputFactory

public OutputFactory<T> getOutputFactory()

Gets the output factory.

Returns:

The output factory.

iterator

public Iterator<SequenceExample<T>> iterator()

Specified by:

iterator in interface Iterable<T extends Output<T>>

toString

public String toString()

Overrides:

toString in class Object