A Cost-Sensitive Sparse Representation Based Classification for Class-Imbalance Problem

Table 3

Average cost of methods on five data sets with cost ratio from 10 to 50.

Cost ratio	10	15	20	25	30	35	40	45	50
Abalone
CSSRC	0.365	0.548	0.487	0.304	0.365	0.426	0.975	0.975	0.609
SRC	1.621	1.646	2.256	2.512	5.487	4.365	5.853	2.280	9.146
CS4VM	4.267	7.036	9.498	12.024	14.561	17.124	19.220	21.809	24.183
CSSVM	1.615	2.213	2.746	3.795	4.175	5.569	6.238	6.542	7.643
Nursery
CSSRC	0.365	0.365	0.731	0.304	0.365	0.426	0.975	0.548	1.829
SRC	4.268	6.585	6.341	6.500	12.804	11.536	13.670	19.207	22.560
CS4VM	0.670	1.001	1.416	1.764	2.108	2.700	2.753	3.152	3.733
CSSVM	0.348	0.394	0.691	0.836	0.895	1.204	1.204	1.531	1.613
Housing
CSSRC	0.487	0.365	0.000	0.000	0.000	0.426	0.000	0.000	0.000
SRC	2.439	2.561	1.256	6.707	5.853	8.109	6.341	12.073	12.195
CS4VM	3.765	6.007	8.091	10.046	11.975	13.491	15.878	17.793	19.420
CSSVM	1.689	2.544	3.106	4.326	4.983	5.228	6.703	6.265	7.647
Letter
CSSRC	0.024	0.049	0.024	0.036	0.012	0.061	0.036	0.085	0.037
SRC	0.036	0.049	0.025	0.305	0.036	0.024	0.049	0.049	1.244
CS4VM	0.606	1.150	1.146	1.483	1.891	2.282	2.405	2.760	3.983
CSSVM	0.158	0.277	0.388	0.298	0.409	0.319	0.466	0.757	0.798
Car
CSSRC	0.000	0.183	0.488	0.000	0.366	0.000	0.488	0.548	0.610
SRC	1.097	1.463	2.195	3.354	1.463	5.549	4.878	5.134	5.488
CS4VM	2.500	3.849	5.307	6.556	7.939	9.365	10.605	11.514	12.854
CSSVM	1.335	1.486	1.711	2.250	2.388	2.561	2.570	2.895	2.998