The AMPL Modeling Language — an Aid to Formulating and Solving Optimization Problems

AMPL summary AMPL: a language for mathematical programming problems, e.g., minimize f(x) s.t. ℓ ≤ c(x) ≤ u, with x ∈ Rn and c: Rn → Rm given algebraically and some xi discrete. 2 AMPL goals • Easy transcription from math (avoid mistakes) • Explicit indexing (no hidden magic) • Declare before use (one-pass reading) • Separate model, data, commands (orthogonality) • Separate solvers (open solver interface) • Update entities as needed (lazy eval.