function(sample, classes) {
		sample = this.sampleToFeatures(sample, this.featureExtractor);
		var category = (Array.isArray(classes)? classes[0]: classes);
		this.multiclassClassifier.trainOnline(sample, category);
		/*for (var positiveClass in classes) {
			this.makeSureClassifierExists(positiveClass);
			this.mapClassnameToClassifier[positiveClass].trainOnline(sample, 1);
		}
		for (var negativeClass in this.mapClassnameToClassifier) {
			if (!classes[negativeClass])
				this.mapClassnameToClassifier[negativeClass].trainOnline(sample, 0);
		}*/
	}
function(sample, classes) {
		sample = this.sampleToFeatures(sample, this.featureExtractor);
		var category = (Array.isArray(classes)? classes[0]: classes);
		this.multiclassClassifier.trainOnline(sample, category);
		
	}
function ( sample , classes ) { sample = this . sampleToFeatures ( sample , this . featureExtractor ) ; var category = ( Array . isArray ( classes ) ? classes [ 0 ] : classes ) ; this . multiclassClassifier . trainOnline ( sample , category ) ; /*for (var positiveClass in classes) {
			this.makeSureClassifierExists(positiveClass);
			this.mapClassnameToClassifier[positiveClass].trainOnline(sample, 1);
		}
		for (var negativeClass in this.mapClassnameToClassifier) {
			if (!classes[negativeClass])
				this.mapClassnameToClassifier[negativeClass].trainOnline(sample, 0);
		}*/ }
Tell the classifier that the given sample belongs to the given classes.

@param sample
a document.
@param classes
an object whose KEYS are classes, or an array whose VALUES are classes.
Tell the classifier that the given sample belongs to the given classes .