MappingInfo (weka-dev 3.9.7 API)

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:

$Revision$

Author:

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

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static 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

All Methods Instance Methods Concrete Methods
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 Detail
  - 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 Detail
  - MappingInfo
```
public MappingInfo(Instances dataSet,
                   MiningSchema miningSchema,
                   Logger log)
            throws Exception
```
    Throws:
    
    Exception
- Method Detail
  - 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