diva.sketch.toolbox

Class LLRSceneMetric

java.lang.Object

diva.sketch.toolbox.LLRSceneMetric

All Implemented Interfaces:

SceneMetric

public class LLRSceneMetric
extends Object
implements SceneMetric

A scene metric that calculates the accuracy based on the accuracy of the terminal assignments, where a terminal is the direct parent of the stroke in the highest confidence scene interpretation.

 # of incorrect terminals / total # of terminals
 

Version:

$Revision: 1.3 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu)

Constructor Summary

Constructors

Constructor and Description
LLRSceneMetric()

Method Summary

Modifier and Type	Method and Description
double	apply(Scene db1, Scene db2) Return a similarity metric based only on the LLR (terminal) values of the test and reference databases:
String	getName() The name of this metric is "llr"

Methods inherited from class java.lang.Object

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

Constructor Detail

LLRSceneMetric

public LLRSceneMetric()

Method Detail

getName

public String getName()

The name of this metric is "llr"

Specified by:

getName in interface SceneMetric

apply

public double apply(Scene db1,
                    Scene db2)

Return a similarity metric based only on the LLR (terminal) values of the test and reference databases:

 # of incorrect terminals / total # of terminals
 

Assumes that the two scenes are composed of the same number of strokes in the same order.

Specified by:

apply in interface SceneMetric

Throws:

IllegalArgumentException - If the scene is empty, if the two scenes have different numbers of strokes, or if either scene does not have a root that covers all of its strokes.