prtClassDlrt Distance likelihood ratio test classifier
CLASSIFIER = prtClassDlrt returns a Dlrt classifier
CLASSIFIER = prtClassDlrt(PROPERTY1, VALUE1, ...) constructs a
prtClassDlrt object CLASSIFIER with properties as specified by
PROPERTY/VALUE pairs.
A prtClassDlrt object inherits all properties from the abstract class
prtClass. In addition is has the following properties:
k - The number of neigbors to be considered
distanceFunction - The function to be used to compute the
distance from samples to cluster centers.
It must be a function handle of the form:
@(x1,x2)distFun(x1,x2). Most prtDistance*
functions will work.
For more information on Dlrt classifiers, refer to the
following paper:
Remus, J.J. et al., "Comparison of a distance-based likelihood ratio
test and k-nearest neighbor classification methods" Machine Learning
for Signal Processing, 2008. MLSP 2008. IEEE Workshop on, October,
2008.
A prtClassDlrt object inherits the TRAIN, RUN, CROSSVALIDATE and
KFOLDS methods from prtAction. It also inherits the PLOT method
from prtClass.
Example:
TestDataSet = prtDataGenUniModal; % Create some test and
TrainingDataSet = prtDataGenUniModal; % training data
classifier = prtClassDlrt; % Create a classifier
classifier = classifier.train(TrainingDataSet); % Train
classified = run(classifier, TestDataSet); % Test
subplot(2,1,1);
classifier.plot;
subplot(2,1,2);
[pf,pd] = prtScoreRoc(classified,TestDataSet);
h = plot(pf,pd,'linewidth',3);
title('ROC'); xlabel('Pf'); ylabel('Pd');