Class BaseSequenceExpansionTransform
- java.lang.Object
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- org.datavec.api.transform.sequence.expansion.BaseSequenceExpansionTransform
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- Direct Known Subclasses:
TextToCharacterIndexTransform
,TextToTermIndexSequenceTransform
public abstract class BaseSequenceExpansionTransform extends Object implements Transform
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected List<String>
expandedColumnNames
protected Schema
inputSchema
protected List<String>
requiredColumns
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Constructor Summary
Constructors Modifier Constructor Description protected
BaseSequenceExpansionTransform(@NonNull List<String> requiredColumns, @NonNull List<String> expandedColumnNames)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description String
columnName()
Returns a singular column name this op is meant to run onString[]
columnNames()
Returns column names this op is meant to run onprotected abstract List<ColumnMetaData>
expandedColumnMetaDatas(List<ColumnMetaData> origColumnMeta, List<String> expandedColumnNames)
protected abstract List<List<Writable>>
expandTimeStep(List<Writable> currentStepValues)
Object
map(Object input)
Transform an object in to another objectList<Writable>
map(List<Writable> writables)
Transform a writable in to another writableObject
mapSequence(Object sequence)
Transform a sequenceList<List<Writable>>
mapSequence(List<List<Writable>> sequence)
Transform a sequenceString
outputColumnName()
The output column name after the operation has been appliedString[]
outputColumnNames()
The output column names This will often be the same as the inputSchema
transform(Schema inputSchema)
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.datavec.api.transform.ColumnOp
getInputSchema, setInputSchema
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Method Detail
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expandedColumnMetaDatas
protected abstract List<ColumnMetaData> expandedColumnMetaDatas(List<ColumnMetaData> origColumnMeta, List<String> expandedColumnNames)
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expandTimeStep
protected abstract List<List<Writable>> expandTimeStep(List<Writable> currentStepValues)
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outputColumnName
public String outputColumnName()
Description copied from interface:ColumnOp
The output column name after the operation has been applied- Specified by:
outputColumnName
in interfaceColumnOp
- Returns:
- the output column name
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outputColumnNames
public String[] outputColumnNames()
Description copied from interface:ColumnOp
The output column names This will often be the same as the input- Specified by:
outputColumnNames
in interfaceColumnOp
- Returns:
- the output column names
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columnNames
public String[] columnNames()
Description copied from interface:ColumnOp
Returns column names this op is meant to run on- Specified by:
columnNames
in interfaceColumnOp
- Returns:
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columnName
public String columnName()
Description copied from interface:ColumnOp
Returns a singular column name this op is meant to run on- Specified by:
columnName
in interfaceColumnOp
- Returns:
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map
public List<Writable> map(List<Writable> writables)
Description copied from interface:Transform
Transform a writable in to another writable
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mapSequence
public List<List<Writable>> mapSequence(List<List<Writable>> sequence)
Description copied from interface:Transform
Transform a sequence- Specified by:
mapSequence
in interfaceTransform
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map
public Object map(Object input)
Description copied from interface:Transform
Transform an object in to another object
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mapSequence
public Object mapSequence(Object sequence)
Description copied from interface:Transform
Transform a sequence- Specified by:
mapSequence
in interfaceTransform
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