Fig. 3
From: Putative markers for the detection of early-stage bladder cancer selected by urine metabolomics
Computational workflow for marker discovery. All samples were partitioned into two cohorts. Marker discovery cohort of size n was used for marker selection by a two-phase screening procedure with LOOCV. In LOOCV, (A) markers selection was done using n-1 samples and (B) validation using the remaining one test sample. Furthermore, repeating this for n times for each sample as the test sample. The independent test cohort was used for independent marker evaluation