Package weka.core.pmml

Class MappingInfo

java.lang.Object

weka.core.pmml.MappingInfo

All Implemented Interfaces:

Serializable

public class MappingInfo
extends Object
implements Serializable

Class that maintains the mapping between incoming data set structure and that of the mining schema.

Version:

$Revision: 10203 $

Author:

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

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final int	UNKNOWN_NOMINAL_VALUE	Index for incoming nominal values that are not defined in the mining schema.

Constructor Summary

Constructors

Constructor	Description
MappingInfo(Instances dataSet, MiningSchema miningSchema, Logger log)

Method Summary

Modifier and Type	Method	Description
String	getFieldsMappingString()	Get a textual description of them mapping between mining schema fields and incoming data fields.
double[]	instanceToSchema(Instance inst, MiningSchema miningSchema)	Convert an Instance to an array of values that matches the format of the mining schema.

Methods inherited from class java.lang.Object

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

Field Details

UNKNOWN_NOMINAL_VALUE

public static final int UNKNOWN_NOMINAL_VALUE

Index for incoming nominal values that are not defined in the mining schema.

See Also:

• Constant Field Values

Constructor Details

MappingInfo

public MappingInfo(Instances dataSet,
 MiningSchema miningSchema,
 Logger log)
            throws Exception

Throws:

Exception

Method Details

instanceToSchema

public double[] instanceToSchema(Instance inst,
 MiningSchema miningSchema)
                          throws Exception

Convert an Instance to an array of values that matches the format of the mining schema. First maps raw attribute values and then applies rules for missing values, outliers etc.

Parameters:

inst - the Instance to convert

miningSchema - the mining schema incoming instance attributes

Returns:

an array of doubles that are values from the incoming Instances, correspond to the format of the mining schema and have had missing values, outliers etc. dealt with.

Throws:

Exception - if something goes wrong

getFieldsMappingString

public String getFieldsMappingString()

Get a textual description of them mapping between mining schema fields and incoming data fields.

Returns:

a description of the fields mapping as a String