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.
int	hashCode()	Returns a hashcode computed from the data in this
List<TensorFunction<NAMETYPE>>	selectorFunctions()
PrimitiveTensorFunction<NAMETYPE>	toPrimitive()	Translate this function - and all of its arguments recursively - to a tree of primitive functions only.
String	toString(ToStringContext<NAMETYPE> 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.
TensorFunction<NAMETYPE>	withTransformedFunctions(Function<ScalarFunction<NAMETYPE>,ScalarFunction<NAMETYPE>> transformer)

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

asScalarFunction, evaluate, toString

Methods inherited from class java.lang.Object

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

Constructor Details

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 Details

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>

selectorFunctions

public List<TensorFunction<NAMETYPE>> selectorFunctions()

withTransformedFunctions

public TensorFunction<NAMETYPE> withTransformedFunctions(Function<ScalarFunction<NAMETYPE>,ScalarFunction<NAMETYPE>> transformer)

Overrides:

withTransformedFunctions 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<NAMETYPE> 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

hashCode

public int hashCode()

Description copied from class: TensorFunction

Returns a hashcode computed from the data in this

Specified by:

hashCode in class TensorFunction<NAMETYPE extends Name>