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kddml.Operators.Postprocessing.RDA_PRESERVED_RESOLVER Class Reference

Inheritance diagram for kddml.Operators.Postprocessing.RDA_PRESERVED_RESOLVER:

kddml.Operators.Postprocessing.PostProcessingResolver kddml.Operators.OperatorResolver kddml.Operators.HWResourcesDescription List of all members.

Public Member Functions

KDDMLObject execute (Hashtable< String, KDDMLScalarManager > settings, Vector< KDDMLObject > arguments) throws ResolverException, KDDMLCoreException
KDDMLObjectType getArgumentType (int i)
int estimatedRAMUsage ()

Detailed Description

Given a hierarchy of items and two sets of association rules R1,R2 over items in the hierarchy, this operator selects those rules in R1 such that, by generalizing the items in the rule to the parent level, yields a rule that belongs to R2.
For example, the two association rules reported below
  1. R1 =“LongBeach AND SanJose --> Chicago“
  2. R2 =“California --> Illinois“
are preserved over the cities-states hierarchy.
The first set of rules (R1) must have been extracted at the bottom level of the hierarchy (i.e. the leaves level). The second set of rules (R2) is a generalization at parent levels. Obviously, the two sets of association rules must share the same signature, i.e. the same mining schema.

Title: KDDML

Description: Knowledge Discovery in Database Environment

Copyright: Copyright (c) 2003 - 2005

Company: Universita' di Pisa - Dipartimento di Informatica

Author:
Andrea Romei (romei@di.unipi.it)
Version:
2.0.16


Member Function Documentation

KDDMLObject kddml.Operators.Postprocessing.RDA_PRESERVED_RESOLVER.execute Hashtable< String, KDDMLScalarManager settings,
Vector< KDDMLObject arguments
throws ResolverException, KDDMLCoreException [virtual]
 

Returns the result of evaluating the operator over the passed arguments and attributes.
Attributes are given as hashtable, where the key is the name of the XML attribute related to the operator and the value is a KDDMLScalar object containing the attribute value. Attribute value is checked by the interpreter layer and it is correct.
Arguments are given as vector of KDDMLOjbect. Types of arguments are correct, as required by the getArgumentType(int i) method.
Implementations of the execute method can be distinguished according to the type of operator.

Parameters:
settings Hashtable the attributes related to the operator. The key of the hashtable is the name of the attribute. The value of the hashtable is a KDDMLScalar representing the value of the attribute.
arguments Vector the list of arguments as KDDMLObject.
Returns:
KDDMLObject the result of evaluating the operator.
Exceptions:
ResolverException if a resolving error occurs.
KDDMLCoreException if a level core error occurs.

Implements kddml.Operators.OperatorResolver.

KDDMLObjectType kddml.Operators.Postprocessing.RDA_PRESERVED_RESOLVER.getArgumentType int  i  )  [virtual]
 

Returns the expected type of the i-th argument of the operator. Returns null if the operator do not admit argument as i-th child.

Parameters:
i int
Returns:
KDDMLObjectType

Implements kddml.Operators.OperatorResolver.

int kddml.Operators.Postprocessing.RDA_PRESERVED_RESOLVER.estimatedRAMUsage  ) 
 

Returns the estimated RAM usage for the operator. Must be a value between 0 and 1024 MB.

Returns:
int default returns 256.

Reimplemented from kddml.Operators.OperatorResolver.


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