JAMS

JAMS is a rename of the former solver EMP and handles EMP (Extended Mathematical Programming) problems.

JAMS reformulates

 Bilevel Programs

 Disjunctive Programs

 Extended Nonlinear Programs

 Embedded Complementarity Systems

 Variational Inequalities

into established mathematical programming classes allowing access to existing solvers.

More details on JAMS and the EMP concept and function can be found in http://pages.cs.wisc.edu/~ferris/talks/focapo08.pdf and at ftp.gams-software.com/dd/docs/solvers/emp.pdf

JAMS comes free of charge with any licensed GAMS system but needs a subsolver to solve the generated models.