Distribution-Free Model for Ambulance Location Problem with Ambiguous Demand

Table 1

.

		Sampling approach			MIP-DF1			MIP-DF2
		CT	Obj	Sel (%)	CT	Obj	Sel (%)	CT	Obj	Sel (%)
1	7	4.9	23	96.26	0.1	36	100.00	0.1	23	100.00
2	7	5.1	22	98.63	0.1	35	100.00	0.1	24	99.82
3	6	4.1	14	96.92	0.1	30	100.00	0.1	14	98.50
4	6	4.3	13	97.13	0.2	29	100.00	0.1	12	97.42
5	6	5.7	12	79.96	0.1	30	100.00	0.2	12	100.00
6	8	5.8	21	98.50	0.1	24	100.00	0.2	27	100.00
Average		5.0	17.5	94.57	0.1	30.7	100.00	0.1	18.7	99.29