Table I. F1-Values (%) of CRFSampler with Respect to Window Size.

Window size	a	b	c	d
1	10.01	10.02	15.30	17.34
5	14.08	17.50	19.65	20.49
9	14.76	18.58	19.81	20.89

F1-value is an even combination of precision (p) and recall (r) and defined as 2pr/(p + r). a, trained and tested using primary sequence; b, trained and tested using PSI-BLAST sequence profile; c, trained and tested using primary sequence and PSIPRED-predicted secondary structure; d, trained and tested using PSI-BLAST sequence profile and PSIPRED-predicted secondary structure confidence scores.