Module datarush.matching

Package com.pervasive.datarush.matching

Class Classifier

java.lang.Object

com.pervasive.datarush.matching.Classifier

public class Classifier
extends Object

Describes which classification methodology to use. Classification takes multiple comparison results and generates a single value that summarizes the strength of the field comparisons.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DEFAULT_FIELD_NAME	The default name of the field generated by a classifier.
static final String	PROP_WEIGHTS	Name of the property utilized by the weighted average classifier.

Constructor Summary

Constructors

Constructor	Description
Classifier()	Construct an empty classifier.
Classifier(ClassifierType type, String[] fieldNames, String outputFieldName)	Construct a classifier without any specific properties.
Classifier(ClassifierType type, String[] fieldNames, String outputFieldName, Map<String,Object> properties)	Construct a classifier with properties specific to the classifier type.

Method Summary

Modifier and Type	Method	Description
String[]	getFields()	Get the input field names.
String	getOutput()	Get the output field name.
Map<String,Object>	getProperties()	Get the classifier type specific properties.
ClassifierType	getType()	Get the classifier type.
void	setFields(String[] fieldNames)	Set the input field names.
void	setOutput(String outputFieldName)	Set the output field name.
void	setProperties(Map<String,Object> properties)	Set the classifier type specific properties.
void	setProperty(String name, Object value)	Set a type specific property.
void	setType(ClassifierType type)	Set the classifier type.

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_FIELD_NAME

public static final String DEFAULT_FIELD_NAME

The default name of the field generated by a classifier.

See Also:

• Constant Field Values

PROP_WEIGHTS

public static final String PROP_WEIGHTS

Name of the property utilized by the weighted average classifier.

See Also:

• Constant Field Values

Constructor Details

Classifier

public Classifier()

Construct an empty classifier.

Classifier

public Classifier(ClassifierType type,
 String[] fieldNames,
 String outputFieldName)

Construct a classifier without any specific properties.

Parameters:

type - the type of classifier wanted

fieldNames - input field names of the classifier

outputFieldName - name of the output field containing the score

Classifier

public Classifier(ClassifierType type,
 String[] fieldNames,
 String outputFieldName,
 Map<String,Object> properties)

Construct a classifier with properties specific to the classifier type.

Parameters:

type - the type of classifier wanted

fieldNames - input field names of the classifier

outputFieldName - name of the output field containing the score

properties - properties specific to the classifier type

Method Details

getType

public ClassifierType getType()

Get the classifier type.

Returns:

classifier type

setType

public void setType(ClassifierType type)

Set the classifier type.

Parameters:

type - the classifier type

getProperties

public Map<String,Object> getProperties()

Get the classifier type specific properties.

Returns:

classifier type specific properties

setProperties

public void setProperties(Map<String,Object> properties)

Set the classifier type specific properties. This sets the current properties, overriding all other settings.

Parameters:

properties - the classifier type specific properties

setProperty

public void setProperty(String name,
 Object value)

Set a type specific property.

Parameters:

name - property name

value - property value

getFields

public String[] getFields()

Get the input field names.

Returns:

input field names

setFields

public void setFields(String[] fieldNames)

Set the input field names.

Parameters:

fieldNames - input field names

getOutput

public String getOutput()

Get the output field name.

Returns:

output field names

setOutput

public void setOutput(String outputFieldName)

Set the output field name.

Parameters:

outputFieldName - output field names