Research Article

Round Randomized Learning Vector Quantization for Brain Tumor Imaging

Table 2

Accuracy rates for LVQ classifiers before and after applying the proposed work and the results of round-off and multirandomization methods individually.

ClassifierDatasetsBrain images data (PPUKM)Segmented challenge (UCI)Segment test (UCI)Image segmentation (UCI)Average STD

LVQ1BRR82.2486.2284.3689.6185.613.12
Only random87878589861.63
Only round76777778770.82
ARR88.1691.1191.3691.3490.491.56

Multi pass LVQBRR78.2987.7889.390.1986.395.49
Only random 8385.58187.785.42.9
Only round70646869712.63
ARR84.8793.339392.2190.854.02

HLVQBRR80.9292.8991.3691.9289.275.6
Only random 83928792894.36
Only round74747075732.22
ARR84.219694.2495.2492.425.52

OLVQ3BRR75.6686.8988.0789.6185.066.36
Only random 85.7590.4591.189.1892.38
Only round7673.962.563.5696.96
ARR83.5590.4490.9592.2189.293.9

ALL LVQ siblingsAve. BRR79.277588.44588.272590.332586.584.96
Ave. only random84.687588.737586.02589.4587.352.8175
Ave. only round747269.471.471.71.92
Ave. ARR85.197592.7292.387592.7590.763.71

(i) BRR means before rounding the distance function results and multirandomizing data sets.
(ii) ARR means after rounding the distance function results and multirandomizing data sets.