Experimental results, with kernels learned using All similarity measures (
SKID3), random-walk reachability (RW), SMILES string similarity (SS), molecular feature similarity (FS), molecular fingerprint similarity (FP) and MACCS fingerprint similarity (MACCS). (a)–(d) Classification performance of each kernel on a hold-out test set as the size of the training set increases; (e) Weights of each individual kernel in All, as training set size increases; (f) Training time for learning the combined kernel (
SKID3) that fuses all the similarity measures, as training set size increases.