com.yahoo.tensor.functions

Class Rename

java.lang.Object

com.yahoo.tensor.functions.TensorFunction

com.yahoo.tensor.functions.PrimitiveTensorFunction

com.yahoo.tensor.functions.Rename

public class Rename
extends PrimitiveTensorFunction

The rename tensor function returns a tensor where some dimensions are assigned new names.

Author:

bratseth

Field Summary

Fields

Modifier and Type	Field and Description
private TensorFunction	argument
private List<String>	fromDimensions
private Map<String,String>	fromToMap
private List<String>	toDimensions

Constructor Summary

Constructors

Constructor and Description
Rename(TensorFunction argument, List<String> fromDimensions, List<String> toDimensions)
Rename(TensorFunction argument, String fromDimension, String toDimension)

Method Summary

Modifier and Type	Method and Description
List<TensorFunction>	arguments() Returns the function arguments of this node in the order they are applied
<NAMETYPE extends TypeContext.Name> Tensor	evaluate(EvaluationContext<NAMETYPE> context) Evaluates this tensor.
List<String>	fromDimensions()
private static Map<String,String>	fromToMap(List<String> fromDimensions, List<String> toDimensions)
private TensorAddress	rename(TensorAddress address, int[] toIndexes)
List<String>	toDimensions()
PrimitiveTensorFunction	toPrimitive() Translate this function - and all of its arguments recursively - to a tree of primitive functions only.
String	toString(ToStringContext context) Return a string representation of this context.
private String	toVectorString(List<String> elements)
private TensorType	type(TensorType type)
<NAMETYPE extends TypeContext.Name> TensorType	type(TypeContext<NAMETYPE> context) Returns the type of the tensor this produces given the input types in the context
TensorFunction	withArguments(List<TensorFunction> arguments) Returns a copy of this tensor function with the arguments replaced by the given list of arguments.

Methods inherited from class com.yahoo.tensor.functions.TensorFunction

evaluate, toString

Methods inherited from class java.lang.Object

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

Field Detail

argument

private final TensorFunction argument

fromDimensions

private final List<String> fromDimensions

toDimensions

private final List<String> toDimensions

fromToMap

private final Map<String,String> fromToMap

Constructor Detail

Rename

public Rename(TensorFunction argument,
              String fromDimension,
              String toDimension)

Rename

public Rename(TensorFunction argument,
              List<String> fromDimensions,
              List<String> toDimensions)

Method Detail

fromDimensions

public List<String> fromDimensions()

toDimensions

public List<String> toDimensions()

fromToMap

private static Map<String,String> fromToMap(List<String> fromDimensions,
                                            List<String> toDimensions)

arguments

public List<TensorFunction> arguments()

Description copied from class: TensorFunction

Returns the function arguments of this node in the order they are applied

Specified by:

arguments in class TensorFunction

withArguments

public TensorFunction withArguments(List<TensorFunction> arguments)

Description copied from class: TensorFunction

Returns a copy of this tensor function with the arguments replaced by the given list of arguments.

Specified by:

withArguments in class TensorFunction

toPrimitive

public PrimitiveTensorFunction toPrimitive()

Description copied from class: TensorFunction

Translate this function - and all of its arguments recursively - to a tree of primitive functions only.

Specified by:

toPrimitive in class TensorFunction

Returns:

a tree of primitive functions implementing this

type

public <NAMETYPE extends TypeContext.Name> TensorType type(TypeContext<NAMETYPE> context)

Description copied from class: TensorFunction

Returns the type of the tensor this produces given the input types in the context

Specified by:

type in class TensorFunction

Parameters:

context - a context which must be passed to all nexted functions when evaluating

type

private TensorType type(TensorType type)

evaluate

public <NAMETYPE extends TypeContext.Name> Tensor evaluate(EvaluationContext<NAMETYPE> context)

Description copied from class: TensorFunction

Evaluates this tensor.

Specified by:

evaluate in class TensorFunction

Parameters:

context - a context which must be passed to all nexted functions when evaluating

rename

private TensorAddress rename(TensorAddress address,
                             int[] toIndexes)

toString

public String toString(ToStringContext context)

Description copied from class: TensorFunction

Return a string representation of this context.

Specified by:

toString in class TensorFunction

Parameters:

context - a context which must be passed to all nested functions when requesting the string value

toVectorString

private String toVectorString(List<String> elements)