Table 2: Results of SSD-liberal and SSD-opt algorithms on rRNA classes and tRNAs from the RNAstrand v2.0 database.

Tool	SSD_liberal						SSD_opt
Dataset\Metric	TP	FP	PPV	TPR	F-measure	MCC (*)	TP	FP	PPV	TPR	F-measure	MCC (*)
5s rRNA	3111	1121	0.735	0.674	0.703	0.704	2785	1186	0.701	0.618	0.657	0.658
16s rRNA	344593	60895	0.849	0.811	0.830	0.830	144667	36279	0.799	0.665	0.726	0.729
23s rRNA	223064	38682	0.852	0.800	0.825	0.826	64360	14886	0.812	0.680	0.740	0.743
tRNA	1109	56	0.952	0.731	0.827	0.834	983	75	0.929	0.684	0.788	0.797
average	142969	25189	0.847	0.754	0.798	0.799	53199	13107	0.811	0.662	0.729	0.732

TP = correctly predicted base-pairs; FP = base-pairs in the predicted structures but not in the reference; TPR = True Positive Rate; PPV = Positive Predictive Value; (*)