16. The method of claim 13 , wherein the defined region within the training set comprises a sphere ω centered about the test object, and wherein there are k 1 neighbors of class 1 within ω and there are k 2 neighbors in class 2 within ω.
16. The method of claim 13 , wherein the defined region within the training set comprises a sphere ω centered about the test object, and wherein there are k 1 neighbors of class 1 within ω and there are k 2 neighbors in class 2 within ω. 17. The method of claim 16 , wherein the size of sphere ω is selected such that probability density for classes 1 and 2 are approximately constant within sphere ω.