FICO Xpress Optimization Examples Repository: Mining and process industries

*Problem name and type, features*		*Difficulty*	*Related examples*
A‑1	Production of alloys: Blending problem formulation of blending constraints; data with numerical indices, solution printout, if-then, getsol	*	blending_graph.mos
A‑2	Animal food production: Blending problem formulation of blending constraints; data with string indices, as, formatted solution printout, use of getsol with linear expressions, strfmt	*	a1alloy.mos
A‑3	Refinery : Blending problem formulation of blending constraints; sparse data with string indices, dynamic initialization, union of sets	**	a2food.mos
A‑4	Cane sugar production : Minimum cost flow (in a bipartite graph) mo ceil, is_binary, formattext	*	e2minflow.mos, mincostflow_graph.mos
A‑5	Opencast mining: Minimum cost flow encoding of arcs, solving LP-relaxation only, array of set	**	a4sugar.mos
A‑6	Production of electricity: Dispatch problem inline if, is_integer, looping over optimization problem solving	**

Further explanation of this example: 'Applications of optimization with Xpress-MP', Chapter 6: Mining and process industries (blending problems)

! Data file for 'a3refine.mos' DEM : [(butane) 20000 (petrol) 40000 (diesel) 30000 (heating) 42000] OCT: [(petbutane) 120 (reformate) 100 (petcrknaphtha) 74] VAP: [(petbutane) 60 (reformate) 2.6 (petcrknaphtha) 4.1] VOL: [(petbutane) 105 (reformate) 3 (petcrknaphtha) 12] SULF: [(dslgasoil) 0.03 (dslcrknaphtha) 0.12 (dslcrkgasoil) 0.76] AVAIL: [(crude1) 250000 (crude2) 500000] REF: [(refbutane) 0.15 (reformate) 0.85] CRACK: [(crknaphtha) 0.40 (crkgasoil) 0.35] DIST: [(crude1 distbutane) 0.03 (crude1 naphtha) 0.15 (crude1 gasoil) 0.40 (crude1 residue) 0.15 (crude2 distbutane) 0.05 (crude2 naphtha) 0.20 (crude2 gasoil) 0.35 (crude2 residue) 0.10] COST: [(crude1) 2.1 (crude2) 2.1 (distbutane) 0 (naphtha) 4.18 (residue) 0.6 (gasoil) 2.04 ]