Efficiency Bounds for Two-Stage Production Systems

Table 1

Ranking intervals for each nonlife insurance company.

DMU	NO.	Our approach		Salo & Punkka [3]’s model
	Taiwan Fire	1	0.1253	0.6992	0.1626	0.9840
Chung Kuo	2	0.1565	0.6248	0.1161	1.0000
Tai Ping	3	0.0374	0.6900	0.0485	0.9884
China Mariners	4	0.0317	0.3042	0.0535	0.4882
Fubon	5	0.6035	0.7670	0.2282	1.0000
Zurich	6	0.1057	0.3897	0.127	0.5938
Taian	7	0.1118	0.2766	0.1984	0.4698
Ming Tai	8	0.1587	0.2752	0.2004	0.4148
Central	9	0.0673	0.2233	0.1296	0.3270
The First	10	0.1413	0.4660	0.1672	0.7807
Kuo Hua	11	0.0047	0.1639	0.0154	0.2826
Union	12	0.2005	0.7596	0.1182	1.0000
Shingkong	13	0.0568	0.2078	0.1167	0.3527
South China	14	0.0847	0.2886	0.1812	0.4696
Cathay Century	15	0.1415	0.6138	0.299	0.9793
Allianz President	16	0.0504	0.3202	0.1372	0.4717
Newa	17	0.0948	0.3600	0.2454	0.6349
AIU	18	0.0418	0.2588	0.1616	0.4271
North America	19	0.0119	0.4112	0.184	0.8220
Federal	20	0.0068	0.5465	0.302	0.9351
Royal&Sun Alliance	21	0.0017	0.2008	0.1202	0.3328
Asia	22	0.0011	0.5895	0.285	1.0000
AXA	23	0.0008	0.4203	0.0011	0.5990
Mitsui Sumitomo	24	0.0043	0.1348	0.0517	0.2571