Levela | ReduceSVb | P(sv-diff)c | ReduceTestd | P(test-diff)e | ImproveRecf | P(rec-diff)g |
|---|
800 | 4.01% | 1.81E-42 | -7.70% | 4.72E-03 | -3.90% | 1.71E-39 |
600 | 5.77% | 1.74E-49 | -2.50% | 4.64E-01 | -1.70% | 5.21E-15 |
500 | 6.83% | 2.75E-51 | -4.00% | 1.62E-01 | -0.30% | 0.079189 |
400 | 8.35% | 3. 26E-60 | 2.80% | 3.48E-01 | 1.10% | 4.48E-06 |
300 | 9.33% | 3.83E-58 | 7.40% | 3.65E-02 | 3.70% | 1.77E-31 |
200 | 8.22% | 1.28E-48 | 19.20% | 6.36E-09 | 6.30% | 5.79E-44 |
150 | 8.55% | 1.51E-53 | 19.50% | 1.16E-08 | 7.10% | 9.76E-46 |
100 | 4.97% | 6.20E-22 | 11.90% | 1.83E-04 | 6.00% | 6.43E-40 |
90 | 5.84% | 1.66E-27 | 13.70% | 4.20E-06 | 4.60% | 1.07E-30 |
80 | 5.17% | 8.20E-29 | 12.40% | 4.14E-06 | 4.50% | 7.12E-29 |
70 | 4.14% | 1.46E-27 | 8.50% | 4.77E-04 | 3.80% | 1.05E-24 |
60 | 3.10% | 1.23E-20 | 10.20% | 3.14E-05 | 3.40% | 4.99E-24 |
50 | 2.27% | 2.01E-15 | 10.20% | 4.11E-06 | 2.90% | 2.37E-21 |
- a Level: The number of features selected in each recursive step. With all of the 1000 features, there is no difference between R-SVM and SVM-RFE because no feature selection happened.
- b ReduceSV: Relative reduction in the mean number of support vectors used by R-SVM comparing to that by SVM-RFE, calculated as: (average #SVSVM-RFE - average #SVR-SVM)/(average #svSVM-RFE).
- c P(sv-diff): The p-value of the observed difference in numbers of SVs, by paired t-test.
- d ReduceTest: Relative reduction in the mean test error rates of SVM models with R-SVM-selected features comparing to that with SVM-RFE selected features, calculated as: (average TestErrorSVM-RFE - average TestErrorR-SVM)/(average TestErrorSVM-RFE).
- e P(test-diff): The p-value of the observed difference in test error rates, by paired t-test.
- f ImproveRec: Relative improvement in the proportion of recovered informative genes by R-SVM than that by SVM-RFE, calculated as: (average #RECR-SVM - average #RECSVM-RFE)/(average #RECSVM-RFE), where #REC is the number of recovered true informative genes with the method stated in the subscript.
- g P(rec-diff): The p-value of the observed difference in proportion of recovered true informative genes, by paired t-test.
