org.datavec.api.transform.ndarray

Class NDArrayScalarOpTransform

java.lang.Object

org.datavec.api.transform.transform.BaseTransform

org.datavec.api.transform.transform.BaseColumnTransform

org.datavec.api.transform.ndarray.NDArrayScalarOpTransform

All Implemented Interfaces:

Serializable, ColumnOp, Transform

public class NDArrayScalarOpTransform
extends BaseColumnTransform

Perform an NDArray/scalar element wise operation, such as X.addi(scalar). Element wise operations are performed in place on each value of the underlying INDArray

Author:

Alex Black

See Also:

Serialized Form

Field Summary

Fields inherited from class org.datavec.api.transform.transform.BaseColumnTransform

columnName, columnNumber

Fields inherited from class org.datavec.api.transform.transform.BaseTransform

inputSchema

Constructor Summary

Constructors

Constructor and Description
NDArrayScalarOpTransform(String columnName, MathOp mathOp, double scalar)

Method Summary

Modifier and Type	Method and Description
ColumnMetaData	getNewColumnMetaData(String newName, ColumnMetaData oldColumnType)
Object	map(Object input) Transform an object in to another object
NDArrayWritable	map(Writable w)
String	toString()

Methods inherited from class org.datavec.api.transform.transform.BaseColumnTransform

columnName, columnNames, equals, hashCode, map, mapSequence, outputColumnName, outputColumnNames, setInputSchema, transform

Methods inherited from class org.datavec.api.transform.transform.BaseTransform

getInputSchema, mapSequence

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.datavec.api.transform.ColumnOp

getInputSchema

Constructor Detail

NDArrayScalarOpTransform

public NDArrayScalarOpTransform(String columnName,
                                MathOp mathOp,
                                double scalar)

Parameters:

columnName - Name of the column to perform the operation on

mathOp - Operation to perform

scalar - Scalar value for the operation

Method Detail

getNewColumnMetaData

public ColumnMetaData getNewColumnMetaData(String newName,
                                           ColumnMetaData oldColumnType)

Specified by:

getNewColumnMetaData in class BaseColumnTransform

map

public NDArrayWritable map(Writable w)

Specified by:

map in class BaseColumnTransform

toString

public String toString()

Specified by:

toString in class BaseColumnTransform

map

public Object map(Object input)

Description copied from interface: Transform

Transform an object in to another object

Parameters:

input - the record to transform

Returns:

the transformed writable