org.deeplearning4j.nn.conf.graph

Class SubsetVertex

java.lang.Object

org.deeplearning4j.nn.conf.graph.GraphVertex

org.deeplearning4j.nn.conf.graph.SubsetVertex

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class SubsetVertex
extends GraphVertex

SubsetVertex is used to select a subset of the activations out of another GraphVertex.
For example, a subset of the activations out of a layer.
Note that this subset is specifying by means of an interval of the original activations. For example, to get the first 10 activations of a layer (or, first 10 features out of a CNN layer) use new SubsetVertex(0,9).
In the case of convolutional (4d) activations, this is done along depth.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SubsetVertex(int from, int to)

Method Summary

Modifier and Type	Method and Description
SubsetVertex	clone()
boolean	equals(java.lang.Object o)
InputType	getOutputType(int layerIndex, InputType... vertexInputs) Determine the type of output for this GraphVertex, given the specified inputs.
int	hashCode()
GraphVertex	instantiate(ComputationGraph graph, java.lang.String name, int idx, org.nd4j.linalg.api.ndarray.INDArray paramsView, boolean initializeParams) Create a GraphVertex instance, for the given computation graph, given the configuration instance.
int	numParams(boolean backprop)

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SubsetVertex

public SubsetVertex(int from,
                    int to)

Parameters:

from - The first column index, inclusive

to - The last column index, inclusive

Method Detail

clone

public SubsetVertex clone()

Specified by:

clone in class GraphVertex

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in class GraphVertex

hashCode

public int hashCode()

Specified by:

hashCode in class GraphVertex

numParams

public int numParams(boolean backprop)

Specified by:

numParams in class GraphVertex

instantiate

public GraphVertex instantiate(ComputationGraph graph,
                               java.lang.String name,
                               int idx,
                               org.nd4j.linalg.api.ndarray.INDArray paramsView,
                               boolean initializeParams)

Description copied from class: GraphVertex

Create a GraphVertex instance, for the given computation graph, given the configuration instance.

Specified by:

instantiate in class GraphVertex

Parameters:

graph - The computation graph that this GraphVertex is to be part of

name - The name of the GraphVertex object

idx - The index of the GraphVertex

paramsView - A view of the full parameters array

initializeParams - If true: initialize the parameters. If false: make no change to the values in the paramsView array

Returns:

The implementation GraphVertex object (i.e., implementation, no the configuration)

getOutputType

public InputType getOutputType(int layerIndex,
                               InputType... vertexInputs)
                        throws InvalidInputTypeException

Description copied from class: GraphVertex

Determine the type of output for this GraphVertex, given the specified inputs. Given that a GraphVertex may do arbitrary processing or modifications of the inputs, the output types can be quite different to the input type(s).
This is generally used to determine when to add preprocessors, as well as the input sizes etc for layers

Specified by:

getOutputType in class GraphVertex

Parameters:

layerIndex - The index of the layer (if appropriate/necessary).

vertexInputs - The inputs to this vertex

Returns:

The type of output for this vertex

Throws:

InvalidInputTypeException - If the input type is invalid for this type of GraphVertex