Performance Ranking Method Based on Superefficiency with Directional Distance Function in DEA

Table 2

Comparison of various VRS superefficiency models.

DMU	Standard radial	R		N-L	R		New model (11)	R
NIPPON	0.9888	17	0.0043	0.9957	17	0.0015	0.9985	17
CATHAY	0.9209	20	0.0449	0.9551	20	0.0128	0.9872	18
GARUDA	0.7419	28	0.1592	0.8408	28	0.0316	0.9684	24
JAL	1.7463	3	−0.2034	1.2034	3	−0.1196	1.1196	1
MALAYSIA	0.7741	27	0.1342	0.8658	27	0.0266	0.9734	23
QANTAS	1.1330	9	−0.0601	1.0601	9	−0.0195	1.0195	9
SAUDIA	1.1638	8	−0.0798	1.0798	8	−0.0165	1.0165	10
SINGAPORE	1.4546	4	−0.1707	1.1707	4	−0.0616	1.0616	3
AUSTRIAN	2.4309	2	−1.4309	2.4309	1	−0.0596	1.0596	4
BRITISH	0.8915	22	0.0529	0.9471	22	0.0382	0.9618	27
FINNAIR	1.3865	5	−0.2075	1.2075	2	−0.0206	1.0206	7
IBERIA	0.7912	26	0.1131	0.8869	26	0.0374	0.9626	26
LUFTHANSA	Inf.	1	−0.0951	1.0951	6	−0.0752	1.0752	2
SAS	0.8740	24	0.0648	0.9352	24	0.0182	0.9818	21
SWISS	1.0885	12	−0.0454	1.0454	12	−0.0129	1.0129	11
PORTUGAL	1.2275	6	−0.1108	1.1108	5	−0.0120	1.0120	12
CANADA	0.9252	19	0.0374	0.9626	19	0.0137	0.9863	19
AMER WEST	1.1943	7	−0.0913	1.0913	7	−0.0201	1.0201	8
AMERICAN	Inf.	10	−0.0535	1.0535	10	−0.0522	1.0522	5
CANADIAN	0.9061	21	0.0469	0.9531	21	0.0147	0.9853	20
CONTINENTAL	1.0015	16	−0.0007	1.0007	16	−0.0005	1.0005	16
DELTA	0.9433	18	0.0287	0.9713	18	0.0250	0.9750	22
EASTERN	0.8344	25	0.0880	0.9120	25	0.0338	0.9662	25
NORTHWEST	1.0175	14	−0.0079	1.0079	14	−0.0064	1.0064	14
PANAM	1.0290	13	−0.0138	1.0138	13	−0.0080	1.0080	13
TWA	1.0088	15	−0.0044	1.0044	15	−0.0027	1.0027	15
UNITED	Inf.	11	−0.0515	1.0515	11	−0.0515	1.0515	6
US AIR	0.8752	23	0.0644	0.9356	23	0.0423	0.9577	28