A New Method Based on TOPSIS and Response Surface Method for MCDM Problems with Interval Numbers

Table 1

Decision matrix for investment program.

Alternatives	IN	EP	RP	RC
	5, 7]	4, 5]	4, 6]	0.4, 0.6]
	10, 11]	6, 7]	5, 6]	1.5, 2.0]
	5, 6]	4, 5]	3, 4]	0.4, 0.7]
	9, 11]	5, 6]	5, 7]	1.3, 1.5]
	6, 8]	3, 5]	3, 4]	0.8, 1.0]
Min/max	Min	Max	Max	Min
Best	5, 6]	6, 7]	5, 7]	0.4, 0.6]
Worst	10, 11]	3, 5]	3, 4]	1.5, 2.0]