TL;DR - What is EDN? EDN (Extensible Data Notation) is a data format similar to JSON, but richer and more extensible. Think of it as "JSON with superpowers": Why EDN over JSON? More expressive types ...
While declaring the symbols in the GAMS language is rather straightforward and concise, defining their values (which must be done prior to running the optimization for exogenous symbols like sets, ...