AMPL Reference Manual
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Nonlinear Programs - AMPL
ampl.com396. NONLINEAR PROGRAMS CHAPTER 18. Achieving a nonlinear effect. Sometimes nonlinearity arises from a need to model a situation in which a linear func-
Simple Sets and Indexing - AMPL | STREAMLINED …
ampl.com5 _____ Simple Sets and Indexing The next four chapters of this book are a comprehensive presentation of AMPL’s facil-
Specifying Data - AMPL
ampl.com(PITT,*) FRA WIN STL FRE ; there is the following statement for the values of cost: param cost := [GARY,*] DET 14 LAN 11 STL 16 LAF 8 [CLEV,*] FRA 27 DET 9 LAN 12 WIN 9 STL 26 LAF 17 [PITT,*] FRA 24 WIN 13 STL 28 FRE 99 ; The templates are given in brackets to distinguish them from the set templates in paren-...
Integer Linear Programs - AMPL
ampl.comSince the model has a combination of continuous (non-integer) and integer variables, it yields what is known as a ‘‘mixed-integer’’ program. To complete the model, we need to add constraints to assure thatTransand Useare related in the intended way. This is the ‘‘clever’’ part of the formulation; we simply
Parameters and Expressions - AMPL
ampl.comAMPL model, while the explicit data values are given in separate data statements, to be described in Chapter 9. In AMPL a single named numerical value is called aparameter. Although some parameters are defined as individual scalar values, most occur in vectors or matrices or other collections of numerical values indexed over sets.
Linear Programs: Variables, Objectives and Constraints
ampl.comThe best-known kind of optimization model, which has served for all of our examples so far, is the linear program. The variables of a linear program take values from some continuous range; the objective and constraints must use only linear functions of the vari-ables. Previous chapters have described these requirements informally or implicitly ...
Display Commands - AMPL
ampl.comDisplay Commands AMPL offers a rich variety of commands and options to help you examine and report the results of optimization. Section 12.1 introducesdisplay, the most convenient com-mand for arranging set members and numerical values into lists and tables; Sections 12.2
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