edu.indiana.iucbrf.examples.quadrantRDBTemplate
Class QuadrantSystemRDB

java.lang.Object
  edu.indiana.iucbrf.cbrsystem.CBRSystem
      edu.indiana.iucbrf.examples.quadrantRDBTemplate.QuadrantSystemRDB

All Implemented Interfaces:

java.io.Serializable

public class QuadrantSystemRDB
extends CBRSystem

NOTE: This file requires that a few database parameters are defined before it will run. See the "Database configuration" section of the file. Also note that there is an sql table creation script in the edu directory.

This system is intended to be one of the simplest possible uses of the framework. In this domain, problems contain two features, x and y, both doubles in [-1, 1]. The square on the x-y plane corresponding to this problem space is divided into four equal quadrants by the coordinate axes. These quadrants are numbered 1, 2, 3, and 4, counterclockwise from upper right, as in basic algebra.

A case consists of a problem description and solution, where the problem is a pair (x,y), and the solution is its quadrant (1, 2, 3, or 4). When a new problem is presented to the system, the five nearest cases are retrieved, and adapted by taking a weighted (by distance) majority vote of the quadrants. The "winning" quadrant is said to be the quadrant of the unknown problem.

See comments in code for additional details.

See Also:

Serialized Form

Field Summary

static java.lang.String	HOST_NAME
static java.lang.String	PASSWORD
static java.lang.String	SERVICE_NAME
static java.lang.String	USERNAME

Fields inherited from class edu.indiana.iucbrf.cbrsystem.CBRSystem

adaptation, baseFilename, CB, currentContext, debugMode, DEFAULT_BASE_FILENAME, domain, episodeSummaryPanel, guiMode, maintenance, performanceMonitor, retrieval, title

Constructor Summary

QuadrantSystemRDB()
Creates a new instance of QuadrantSystem

Method Summary

ProblemGenerator

constructProblemGenerator() A problem generator requires specification of arguments to send to feature constructors.

Methods inherited from class edu.indiana.iucbrf.cbrsystem.CBRSystem

close, finalize, getAdaptation, getBaseFilename, getCB, getContext, getDebugMode, getDomain, getGUIMode, getMaintenance, getPerformanceMonitor, getRetrieval, getTitle, loadCBFromFile, loadPerformanceMonitorFromFile, saveCBToFile, savePerformanceMonitorToFile, saveSystemToFile, setAdaptation, setBaseFilename, setCB, setContext, setDebugMode, setDomain, setGUIMode, setMaintenance, setPerformanceMonitor, setRetrieval, setTitle, solve, solve

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

USERNAME

public static final java.lang.String USERNAME

PASSWORD

public static final java.lang.String PASSWORD

HOST_NAME

public static final java.lang.String HOST_NAME

SERVICE_NAME

public static final java.lang.String SERVICE_NAME

Constructor Detail

QuadrantSystemRDB

public QuadrantSystemRDB()

Creates a new instance of QuadrantSystem

Method Detail

constructProblemGenerator

public ProblemGenerator constructProblemGenerator()

A problem generator requires specification of arguments to send to feature constructors. Here, random distributions are used.