Research Article
Classification of Region of Interest in Mammograms Using Dual Contourlet Transform and Improved KNN
Table 5
Classification performance (%) using KNN and improved KNN tested between benign and malignant.
| Feature | Dual-CT | Contourlet | Wavelet | Benign | Malignant | Benign | Malignant | Benign | Malignant |
| KNN (mean) | 84.85 | 65.38 | 80.38 | 76.92 | 87.88 | 73.08 | Improved KNN (mean) | 98.48 | 82.69 | 95.45 | 86.54 | 93.94 | 78.85 |
| KNN (SD) | 87.88 | 61.54 | 77.27 | 63.46 | 83.33 | 65.38 | Improved KNN (SD) | 100 | 84.62 | 89.39 | 86.54 | 90.91 | 78.85 |
| KNN (smoothness) | 75.76 | 63.46 | 83.33 | 69.23 | 87.88 | 65.38 | Improved KNN (smoothness) | 96.97 | 94.23 | 95.45 | 80.77 | 89.39 | 75.00 |
| KNN (skewness) | 81.82 | 59.62 | 80.30 | 75.00 | 77.27 | 73.08 | Improved KNN (skewness) | 93.94 | 86.54 | 89.39 | 82.69 | 87.88 | 86.54 |
| KNN (uniformity) | 83.33 | 65.38 | 78.79 | 69.23 | 89.39 | 61.54 | Improved KNN (uniformity) | 98.48 | 90.38 | 95.45 | 80.77 | 92.42 | 73.08 |
| KNN (entropy) | 72.73 | 61.54 | 83.33 | 71.15 | 89.39 | 59.62 | Improved KNN (entropy) | 93.94 | 86.54 | 93.94 | 82.69 | 96.97 | 73.68 |
| KNN (contrast) | 80.30 | 69.23 | 84.85 | 63.46 | 78.79 | 63.46 | Improved KNN (contrast) | 95.45 | 96.15 | 92.42 | 80.77 | 92.42 | 78.85 |
| KNN (correlation) | 77.27 | 75.00 | 83.33 | 73.08 | 81.82 | 78.85 | Improved KNN (correlation) | 93.94 | 88.46 | 95.45 | 75.00 | 89.39 | 82.69 |
| KNN (homogeneity) | 74.24 | 78.85 | 80.30 | 63.46 | 81.82 | 61.54 | Improved KNN (homogeneity) | 95.45 | 94.23 | 92.42 | 82.69 | 87.88 | 73.08 |
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SD represents standard deviation; bold font number indicates the best performance in each class.
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