Rather than run trial replications in order to estimate how many replications are necessary to ensure the accuracy of a particular output, we can use dynamic simulation...
Animating a Resource To animate a resource, first click on the Resource button in the Animate toolbar. This brings up the Resource Picture Placement Dialogue...
Columnwise Formulations in AMPL Consider the following problem (Adapted from Section 16.2, AMPL: A Modeling Language for Mathematical Programming): Workhard and Co...
Parametric Analysis After solving a linear programme, you have sensitivity analysis immediately available to show what happen happens Lauren when there are small...
Installing AMPL at Home For Windows You can easily set up AMPL on your (Windows) computer by: 1 Downloading a `starter kit` from the AMPL website; 1 Extracting...
Integer Programming with AMPL Specifying variables to be integer or binary in AMPL will cause the solver, e.g., CPLEX, to use mixed integer programming. This will...
Depth First Search for Enumeration One common method of generating patterns for set partitioning problems is to use a search to find feasible patterns/schedules/sets...
\usepackage{amsmath,amssymb} Set Partitioning, Packing and Covering Set partitioning, packing and covering problems are common types of integer programmes. They involve...
The Cutting Stock Problem Also known as the Trim Loss Model. Coming soon! Solving the Cutting Stock Problem with OR Software Using AMPL/CPLEX (Coming Soon!)...
\usepackage{amsmath,amssymb} Power Sets When building set partitioning, covering or packing models we often choose to generate a power set to generate variables...
Mathematical Programming Mathematical programming uses mathematical variables and expressions to model problems. In the formulation step of the Operations Research...
Network Optimisation Network optimisation involves mathematical programmes that describe problems based on networks. There are many different types of network optimisation...
The AMPL Syntax Guide Disclaimer This is a guide to the AMPL syntax only. For a comprehensive reference to the AMPL language see AMPL: A Modeling Language for...
Looping in AMPL for Loops let Loops Conditional Loops for Loops In AMPL you can create basic for loops by creating a set automatically and looping over elements...
What is a Management Summary? Wikitionary defines management as administration; the process or practice of managing. and a summary as concise, brief or presented...
Expressions in AMPL 1 Description 1 The sum Expression 1 min/max Expressions 1 Mathematical Operators Description Expressions are the main way for AMPL...
Objective Functions in AMPL 1 Description 2 Declaring an Objective Function 3 Defining an Objective Function Description The objective function of a mathematical...
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