org.datavec.api.transform.ndarray

Class NDArrayMathFunctionTransform

java.lang.Object

org.datavec.api.transform.transform.BaseTransform

org.datavec.api.transform.transform.BaseColumnTransform

org.datavec.api.transform.ndarray.NDArrayMathFunctionTransform

All Implemented Interfaces:

Serializable, ColumnOp, Transform

public class NDArrayMathFunctionTransform
extends BaseColumnTransform

A simple transform to do common mathematical operations, such as sin(x), ceil(x), etc.
Operations are performed element-wise on each value in the INDArray; operations are specified by MathFunction

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
NDArrayMathFunctionTransform(String columnName, MathFunction mathFunction)

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

NDArrayMathFunctionTransform

public NDArrayMathFunctionTransform(String columnName,
                                    MathFunction mathFunction)

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