A Multiobjective Optimization Model of Production-Sourcing for Sustainable Supply Chain with Consideration of Social, Environmental, and Economic Factors

Table 2

The exponential severity function.

𝑛	𝑛−(∑𝑛)/𝑁	𝑒^𝑛−(∑𝑛)/𝑁
1	−3	0.049787
2	−2	0.135335
3	−1	0.367879
4	0	1
5	1	2.718282
6	2	7.389056
7	3	20.08554