Multi-objective to single-objective using GAMS?

01 January 1970 0 5K Report

How can I code lexicographic augmented 2 epsilon constraint, compromise programming (lp-metric: p=1,2, infinity), and utility function in GAMS?

I am looking for coding samples that can help me through this problem.

I need to implement these methods in the attached file (the base model without the objective function f3).

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Difficulty in debugging code to correct error - TypeError: '<' not supported ?

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