edu::tum::cs::bayesnets::learning::Learner Class Reference

Inheritance diagram for edu::tum::cs::bayesnets::learning::Learner:

Public Member Functions
void	finish () throws Exception
BeliefNetworkEx	getNetwork ()
abstract void	learn (ResultSet rs) throws Exception
void	learn (String sqlQuery, String dbConnectString) throws Exception, SQLException
	Learner (BeliefNetwork bn)
	Learner (BeliefNetworkEx bn)
Protected Member Functions
abstract void	end_learning () throws Exception
Protected Attributes
BeliefNetworkEx	bn
boolean	finished = false
BeliefNode[]	nodes

Detailed Description

the abstract base class for other learners, which provides some basic functionality

Author:: Dominik Jain

Definition at line 17 of file Learner.java.

Constructor & Destructor Documentation

edu::tum::cs::bayesnets::learning::Learner::Learner ( BeliefNetworkEx bn ) [inline]

constructs a new learner from a BeliefNetworkEx object

Parameters:

bn

Definition at line 38 of file Learner.java.

edu::tum::cs::bayesnets::learning::Learner::Learner ( BeliefNetwork bn ) [inline]

constructs a new learner from a BeliefNetwork object

Parameters:

bn

Definition at line 47 of file Learner.java.

Member Function Documentation

abstract void edu::tum::cs::bayesnets::learning::Learner::end_learning ( ) throws Exception [protected, pure virtual]

This function must be overridden by each subclass. It is called by finish to complete the learning process.

Implemented in edu::tum::cs::bayesnets::learning::CPTLearner, edu::tum::cs::bayesnets::learning::DomainLearner, and edu::tum::cs::srl::bayesnets::learning::DomainLearner.

void edu::tum::cs::bayesnets::learning::Learner::finish ( ) throws Exception [inline]

completes the learning process, performing final processing. Only when this function has been called can you be sure that all the learnt examples are reflected in the network's properties.

Exceptions:

Exception

Definition at line 88 of file Learner.java.

BeliefNetworkEx edu::tum::cs::bayesnets::learning::Learner::getNetwork ( ) [inline]

returns the network the learner is working on. If this function is called after the learning process has been completed (i.e. finish() has been called), the network will contain the final result of learning – the modified network. The returned BeliefNetworkEx object can subsequently be used to save the network, display it in the editor, etc.

Definition at line 59 of file Learner.java.

abstract void edu::tum::cs::bayesnets::learning::Learner::learn ( ResultSet rs ) throws Exception [pure virtual]

Implemented in edu::tum::cs::bayesnets::learning::CPTLearner, and edu::tum::cs::bayesnets::learning::DomainLearner.

void edu::tum::cs::bayesnets::learning::Learner::learn	(	String	sqlQuery,
		String	dbConnectString
	)			throws Exception, SQLException `[inline]`

learns all the examples in the result set that is obtained by executing the given query.

Parameters:

	sqlQuery	an SQL query to execute in order to obtain a table (result set) of examples
	dbConnectString	the connect string to establish a connection to the database

Exceptions: