weka.classifiers.functions.dl4j

Class Utils

java.lang.Object

weka.classifiers.functions.dl4j.Utils

public class Utils
extends java.lang.Object

Utility routines for the Dl4jMlpClassifier

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Modifier and Type	Method and Description
static org.nd4j.linalg.dataset.DataSet	instancesToDataSet(Instances insts) Converts a set of training instances to a DataSet.
static org.nd4j.linalg.api.ndarray.INDArray	instanceToINDArray(Instance inst) Converts an instance to an INDArray.
static org.nd4j.linalg.dataset.DataSet	RNNinstancesToDataSet(Instances insts) Converts a set of training instances corresponding to a time series to a DataSet.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Utils

public Utils()

Method Detail

instancesToDataSet

public static org.nd4j.linalg.dataset.DataSet instancesToDataSet(Instances insts)

Converts a set of training instances to a DataSet. Assumes that the instances have been suitably preprocessed - i.e. missing values replaced and nominals converted to binary/numeric. Also assumes that the class index has been set

Parameters:

insts - the instances to convert

Returns:

a DataSet

RNNinstancesToDataSet

public static org.nd4j.linalg.dataset.DataSet RNNinstancesToDataSet(Instances insts)

Converts a set of training instances corresponding to a time series to a DataSet. For RNNs, the input of the network is 3 dimensional of dimensions [numExamples, numInputs, numTimeSteps] Assumes that the instances have been suitably preprocessed - i.e. missing values replaced and nominals converted to binary/numeric. Also assumes that the class index has been set

Parameters:

insts - the instances to convert

Returns:

a DataSet

instanceToINDArray

public static org.nd4j.linalg.api.ndarray.INDArray instanceToINDArray(Instance inst)

Converts an instance to an INDArray. Only the values of the non-class attributes are copied over.

Parameters:

inst -

Returns:

the INDArray