4.2 Classifier
To classify the stained objects we have implemented a distance weighted K-nearest neighbour
classifier (Knn-d) [3], [4].
Knn-d: Assigns a query vector to the class wc ∈ W = {w1,...,wm} which has the largest
distance weighted majority (number/total distance) in the set of K closest (determined by
a distance measure) neighbours in the training set.
Distance Measure: The choice of distance measure is critical for Knn classifiers. The possible
choices for a simple measure can be the L1 norm (DL1), a relative distance measure
based on L1 norm [6] (DRL1), or L2 norm (DL2).