An Interval Efficiency Measurement without Sign Restrictions in Data

Table 5

Degree of preference matrix for weakly efficient and inefficient banks with equal weights.

DMU	2	4	6	8	10	11	12	13	14	15	16	17	18	19
2	—	1	1	1	0.98	0.61	1	1	0.32	0.40	0.86	1	1	0.51
4	0	—	0.84	1	0.42	0.23	0.78	0.88	0	0	0.32	0.68	0.80	0
6	0	0.16	—	1	0.09	0.06	0.58	0.54	0	0	0.03	0.38	0.54	0
8	0	0	0	—	0	0	0.06	0	0	0	0	0	0	0
10	0.02	0.58	0.91	1	—	0.28	0.82	0.96	0	0	0.40	0.75	0.86	0.05
11	0.39	0.77	0.94	1	0.72	—	0.88	0.97	0.23	0.30	0.65	0.85	0.91	0.40
12	0	0.22	0.42	0.94	0.18	0.13	—	0.45	0	0	0.13	0.35	0.46	0
13	0	0.12	0.46	1	0.04	0.03	0.55	—	0	0	0	0.34	0.51	0
14	0.68	1	1	1	1	0.77	1	1	—	0.59	1	1	1	0.69
15	0.60	1	1	1	1	0.70	1	1	0.41	—	1	1	1	0.61
16	0.14	0.68	0.97	1	0.60	0.35	0.87	1	0	0	—	0.82	0.91	0.16
17	0	0.32	0.62	1	0.25	0.15	0.65	0.66	0	0	0.18	—	0.64	0
18	0	0.20	0.46	1	0.14	0.09	0.54	0.49	0	0	0.09	0.36	—	0
19	0.49	1	1	1	0.95	0.60	1	1	0.31	0.39	0.84	1	1	—