Package com.yahoo.tensor.functions

Class Slice<NAMETYPE extends Name>

java.lang.Object

com.yahoo.tensor.functions.TensorFunction<NAMETYPE>

com.yahoo.tensor.functions.PrimitiveTensorFunction<NAMETYPE>

com.yahoo.tensor.functions.Slice<NAMETYPE>

public class Slice<NAMETYPE extends Name>
extends PrimitiveTensorFunction<NAMETYPE>

Returns a subspace of a tensor

Author:

bratseth

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Slice.DimensionValue<NAMETYPE extends Name>

Constructor Summary

Constructors

Constructor	Description
Slice(TensorFunction<NAMETYPE> argument, List<Slice.DimensionValue<NAMETYPE>> subspaceAddress)	Creates a value function

Method Summary

Modifier and Type	Method	Description
List<TensorFunction<NAMETYPE>>	arguments()	Returns the function arguments of this node in the order they are applied
Tensor	evaluate(EvaluationContext<NAMETYPE> context)	Evaluates this tensor.
PrimitiveTensorFunction<NAMETYPE>	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.
TensorType	type(TypeContext<NAMETYPE> context)	Returns the type of the tensor this produces given the input types in the context
Slice<NAMETYPE>	withArguments(List<TensorFunction<NAMETYPE>> 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

asScalarFunction, evaluate, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Slice

public Slice(TensorFunction<NAMETYPE> argument,
             List<Slice.DimensionValue<NAMETYPE>> subspaceAddress)

Creates a value function

Parameters:

argument - the tensor to return a cell value from

subspaceAddress - a description of the address of the cell to return the value of. This is not a TensorAddress because those require a type, but a type is not resolved until this is evaluated

Method Detail

arguments

public List<TensorFunction<NAMETYPE>> 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<NAMETYPE extends Name>

withArguments

public Slice<NAMETYPE> withArguments(List<TensorFunction<NAMETYPE>> 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<NAMETYPE extends Name>

toPrimitive

public PrimitiveTensorFunction<NAMETYPE> 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<NAMETYPE extends Name>

Returns:

a tree of primitive functions implementing this

evaluate

public Tensor evaluate(EvaluationContext<NAMETYPE> context)

Description copied from class: TensorFunction

Evaluates this tensor.

Specified by:

evaluate in class TensorFunction<NAMETYPE extends Name>

Parameters:

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

type

public 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<NAMETYPE extends Name>

Parameters:

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

toString

public String toString(ToStringContext context)

Description copied from class: TensorFunction

Return a string representation of this context.

Specified by:

toString in class TensorFunction<NAMETYPE extends Name>

Parameters:

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