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oracle.dmt.jdm.task
Interface OraExplainTask

All Superinterfaces:

javax.datamining.MiningObject, OraPredictiveAnalyticsTask, javax.datamining.base.Task

public interface OraExplainTask

extends OraPredictiveAnalyticsTask

OraExplainTask is used to produce importance and ranks for the columns with respect to the explain column in the input dataset.

Explain task output table has the following fixed columns:

• attribute_name VARCHAR2(30)
• • Name of a column in the input data; all columns except the explained column are listed in the result table.
• explanatory_value NUMBER
• • Value indicating how useful the column is for determining the value of the explained column. Higher values indicate greater explanatory power. Value can range from 0 to 1. An individual column's explanatory value is independent of other columns in the input table. Instead, the values are based on how strong each individual column correlates with the explained column. The value is affected by the number of records in the input table, and the relations of the values of the column to the values of the explain column. An explanatory power value of 0 implies there is no useful correlation between the column's values and the explain column's values. An explanatory power of 1 implies perfect correlation; such columns should be eliminated from consideration for PREDICT. In practice, an explanatory power equal to 1 is rarely returned.
• rank NUMBER
• • Ranking of explanatory power. Rows with equal values for explanatory_power have the same rank. Rank values are not skipped in the event of ties.

Method Summary

java.lang.String	getExplainAttributeName() Returns the explain column
java.lang.String	getInputData() Returns the input data URI of the Explain.
java.lang.String	getOutputData() Returns the output data URI.
void	setExplainAttributeName(java.lang.String explainAttributeName) Sets the explain attribute name to be used for Explain.
void	setInputData(java.lang.String dataURI) Set the input data URI of the Explain.
void	setOutputData(java.lang.String dataURI) Sets the output data URI of the Explain.

Methods inherited from interface javax.datamining.base.Task

getExecutionHandle, verify

Methods inherited from interface javax.datamining.MiningObject

getCreationDate, getCreatorInfo, getDescription, getName, getObjectIdentifier, getObjectType, setDescription

Method Detail

getInputData

public java.lang.String getInputData()

Returns the input data URI of the Explain.

Returns:

String input data URI

setInputData

public void setInputData(java.lang.String dataURI)

Set the input data URI of the Explain.

Parameters:

dataURI - input data URI

getOutputData

public java.lang.String getOutputData()

Returns the output data URI.

Returns:

String output data URI

setOutputData

public void setOutputData(java.lang.String dataURI)

Sets the output data URI of the Explain.

Parameters:

dataURI - ourput data URI

setExplainAttributeName

public void setExplainAttributeName(java.lang.String explainAttributeName)

Sets the explain attribute name to be used for Explain.

getExplainAttributeName

public java.lang.String getExplainAttributeName()

Returns the explain column

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