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Table 5 Computational cost comparison Results presented in CPU seconds and in increasing order. All experiments were conducted using Matlab code on a dual CPU Athlon 1400+ running Linux.

From: Feature selection and nearest centroid classification for protein mass spectrometry

  Ave. CPU Time (+/-) OC-H4 OC-WCX2a OC-WCX2b PC-H4 PC-IMAC-Cu
No FE 1.19 0.40 0.84 0.87 1.11 1.31 1.82
P-test 2.42 1.11 1.41 1.58 4.12 2.08 2.90
PCA 19.39 7.70 12.69 12.08 17.41 25.57 29.21
PCA/LDA 20.58 8.08 13.53 12.95 18.52 26.88 31.03
KS-test 27.36 3.07 25.56 24.55 29.96 25.40 31.34
Boosted 543.42 332.13 371.73 134.56 507.62 688.22 1014.97
T-test 649.84 39.39 622.97 623.37 645.66 639.14 718.04
SFS 3164.70 1477.13 2178.24 2175.75 2516.42 3269.37 5683.70
BoostedFE 3356.89 2236.51 2679.97 1336.25 1841.57 3997.65 6928.99
NSC(20) 5434.20 3321.34 3717.30 1345.60 5076.20 6882.20 10149.70
SBS 23934.82 6655.33 17032.94 17244.80 29913.61 24574.69 30908.07