Package adams.ml.data

Class WekaConverter

java.lang.Object

adams.ml.data.WekaConverter

public class WekaConverter
extends Object

Helper class for converting data to and fro Weka.

Version:

$Revision$

Author:

FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor	Description
WekaConverter()

Method Summary

Modifier and Type	Method	Description
static Capabilities	convertCapabilities(weka.core.Capabilities caps)	Converts Weka capabilities into ADAMS ones.
static Dataset	toDataset(weka.core.Instances data)	Converts a Weka Instances object into an ADAMS Dataset.
static weka.core.Instance	toInstance(weka.core.Instances data, Row row)	Turns an ADAMS dataset row into a Weka Instance.
static weka.core.Instances	toInstances(Dataset data)	Converts an ADAMS Dataset to Weka Instances.
protected static void	transferCapability(weka.core.Capabilities fromCaps, weka.core.Capabilities.Capability fromCap, Capabilities toCaps, Capability toCap)	Transfers the specified capability if enabled.

Methods inherited from class java.lang.Object

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

Constructor Detail

WekaConverter

public WekaConverter()

Method Detail

toInstances

public static weka.core.Instances toInstances(Dataset data)
                                       throws Exception

Converts an ADAMS Dataset to Weka Instances. Only sets the class attribute if the dataset has exactly one defined.

Parameters:

data - the data to convert

Returns:

the generated data

Throws:

Exception - if conversion fails

toDataset

public static Dataset toDataset(weka.core.Instances data)
                         throws Exception

Converts a Weka Instances object into an ADAMS Dataset.

Parameters:

data - the data to convert

Returns:

the generated data

Throws:

Exception - if conversion fail

toInstance

public static weka.core.Instance toInstance(weka.core.Instances data,
                                            Row row)
                                     throws Exception

Turns an ADAMS dataset row into a Weka Instance.

Parameters:

data - the dataset to use as template

row - the row to convert

Returns:

the generated instance

Throws:

Exception - if conversion fails

transferCapability

protected static void transferCapability(weka.core.Capabilities fromCaps,
                                         weka.core.Capabilities.Capability fromCap,
                                         Capabilities toCaps,
                                         Capability toCap)

Transfers the specified capability if enabled. Also checks whether dependency is flagged.

Parameters:

fromCaps - the Weka capabilities

fromCap - the Weka capability to check

toCaps - the ADAMS capabilities

toCap - the ADAMS capability to set, if necessary

convertCapabilities

public static Capabilities convertCapabilities(weka.core.Capabilities caps)

Converts Weka capabilities into ADAMS ones.

Parameters:

caps - the capabilities to convert

Returns:

the converted capabilities