A detailed error analysis of 13 kernel methods for protein-protein interaction extraction

Table 7 Classification results on the 190 PD pairs with CL evaluation

Kernel	r	TP	e	TP/e	TP/#PD
SpT	42.1	53	80	0.66	0.28
SST	26.9	39	51	0.76	0.21
ST	29.2	28	55	0.51	0.15
SL	29.9	27	57	0.47	0.14
combined	26.8	16	51	0.31	0.08
shallow	28.6	14	54	0.26	0.07
kBSPS	37.1	14	70	0.20	0.07
APG	26.9	9	51	0.18	0.05
edit	22.5	7	43	0.16	0.04
cosine	26.6	4	51	0.08	0.02
syntactic	26.9	2	51	0.04	0.01
lexical	24.5	1	47	0.02	0.01

Classification results on the 190 PD pairs with CL evaluation (in decreasing order according to the number of successfully classified pairs). Ratio (r) refers to the distribution of positive classes predicted by the kernel measured across the 5 corpora; TP is the number of correctly classified PD pairs; e is 190·r, the expected number of negative class predictions projected onto the 190 PD pairs.