AMPL: A Modeling Language for Mathematical Programming - download pdf or read online

By Fourer R., Gay D.M., Kernighan B.W.

ISBN-10: 0534388094

ISBN-13: 9780534388096

AMPL is a language for large-scale optimization and mathematical programming difficulties in construction, distribution, mixing, scheduling, and lots of different functions. Combining commonplace algebraic notation and a strong interactive command surroundings, AMPL makes it effortless to create types, use a large choice of solvers, and view recommendations. notwithstanding versatile and handy for swift prototyping and improvement of versions, AMPL additionally bargains the rate and generality wanted for repeated large-scale construction runs. This e-book, written by means of the creators of AMPL, is an entire consultant for modelers in any respect degrees of expertise. It starts with an educational on universal linear programming types, and offers all of AMPL's gains for linear programming with huge examples. extra chapters disguise community, nonlinear, piecewise-linear, and integer programming; database and spreadsheet interactions; and command scripts. so much chapters comprise workouts. obtain unfastened types of AMPL and a number of other solvers from www.ampl.com for experimentation, assessment, and schooling. the website additionally lists proprietors of the economic model of AMPL and various solvers.

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Extra resources for AMPL: A Modeling Language for Mathematical Programming

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Let’s jump right in at the deep end and take a look at a variable declaration: var bookTitle:String; OK, that’s not too scary, but what does it all mean? 27 CHAPTER 2 We start with the var keyword, which tells ActionScript that you’re about to create a new variable. Next, we’ve got the variable name, or identifier, bookTitle, which is a unique name for this variable. We can use this identifier in future code to read or change the value of the variable. Note that ActionScript is a case-sensitive language, so booktitle and bookTitle would be two completely different variables.

6. fla file in the Flash CS3 IDE. 7. Test your Flash movie by selecting Control ➤ Test Movie from the main menu. You should see the same result as when you placed the code on the timeline, as shown in Figure 1-4, but this time, the code is being pulled in from an external file. While this method is better than placing all your code directly on the timeline, you still needed to add the include statement in the FLA file, which, once again, makes it difficult to find and manage. Not only that, but although the code was in an external file, it was actually compiled into the first frame of the SWF file as though you had written it on the timeline.

Var myArray:Array = new Array(); The new operator is something you will become familiar with very quickly, as it is the way to create almost any type of ActionScript object. —you get your object. You can also pass some values within the parentheses (called parameters) to give special instructions to or populate your array. For instance, if you pass in a number this tells the array that it will be of a certain length, meaning that it will contain a certain number of items in its list. // an array with five "slots" ready to hold data var myArray:Array = new Array(5); If you pass in something other than a number or if you pass in more than one value, these will be the initial values stored in the array.

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AMPL: A Modeling Language for Mathematical Programming by Fourer R., Gay D.M., Kernighan B.W.


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