javax.datamining.statistics
Interface AttributeStatisticsSet

public interface AttributeStatisticsSet

The interface AttributeStatisticsSet is a container for statistics on a related set of attributes and/or cases. It results from computing statistics on a physical data set object directly, as a characterization of the data used to build a model, or information on a particular model element, e.g., a cluster in a clustering model.

Author:

JSR-73 Java Data Mining Expert Group

Method Summary

long	getNumberOfCases() Returns the number of cases for which statistics were computed.
java.util.Collection	getStatistics() Returns a collection of all attributes that allows sequential inspection of the returned statistics.
UnivariateStatistics	getStatistics(java.lang.String attributeName) Returns the statistics for the given attribute.
java.util.Date	getStatisticsTimestamp() Returns the timestamp when statistics were computed.
boolean	supportsCapabiltiy(AttributeStatisticsSetCapability capability) Returns true if the specified capability is supported in the implementation of the AttributeStatisticsSet being used.

Method Detail

getNumberOfCases

public long getNumberOfCases()

Returns the number of cases for which statistics were computed.

Returns:

long

getStatistics

public java.util.Collection getStatistics()
                                   throws JDMException

Returns a collection of all attributes that allows sequential inspection of the returned statistics.

Returns:

Collection

Throws:

JDMException

getStatistics

public UnivariateStatistics getStatistics(java.lang.String attributeName)
                                   throws JDMException

Returns the statistics for the given attribute.

Parameters:

attributeName - The name of the attribute whose statistics is to be returned.

Returns:

UnivariateStatistics

Throws:

JDMException

getStatisticsTimestamp

public java.util.Date getStatisticsTimestamp()

Returns the timestamp when statistics were computed.

Returns:

Date

supportsCapabiltiy

public boolean supportsCapabiltiy(AttributeStatisticsSetCapability capability)
                           throws JDMException

Returns true if the specified capability is supported in the implementation of the AttributeStatisticsSet being used. Returns false otherwise.

Parameters:

capability -

Returns:

boolean

Throws:

JDMException