Monday, July 18, 2011

Using OptimJ for Linear programming

Linear optimization or linear programming (LP) fujitsu btp-bak8 battery, fujitsu btp -b4k8 battery is a mathematical method for determining a way to achieve the best outcome in a model with multiple requirements (constrains) that have a linear relationship.

Linear Programming is mostly used in the field of optimization, this because a wide variety of problems in Operations Research (OR) can be expressed as linear programming problems. Linear programming is a type of mathematical optimization (mathematical programming) and the most common examples of optimizations problems in Operations Research that can be expressed in as linear programming problems are network flow problems and the diet problem. A network flow problem is about finding the optimal(maximal) output in a flow. This model can be used to find the optimum flow in a road system, fluids in pipelines, in fact, anything that travels through a network with limited capacity. A diet problem model is a model where there are multiple constrains and a the goal is to find the optimum value. A simple example is a menu with food, all the items on the menu have dell latitude e6420 battery, dell latitude e6520 battery different vitamins, minerals and other nutrients. The optimum output is a output that completes all the goals, in this case having sufficient nutrients in total, and has the lowest cost. Since this model is easy to understand for people with no background in the field, it is often used as an introduction to both Operations Research and Linear Programming.

Linear programming was developed by the Russian mathematician, Leonid Kantorovich, in 1939. It was used for the first time during World War II in order to reduce the costs of the army and increase the efficiency in the battlefield. After the war, the methods derived from linear programming started to be adopted by many commercial sector’s for planning optimization.

One of the largest breakthroughs in solving linear programming problems was the introduction of the new interior point method by Narendra Karmarkar in 1984. Many ideas from linear programming have inspired central concepts of optimization theories. Examples are: Decomposition, duality and the importance of convexity and its generalizations. Nowadays, the applications of linear programming can be seen in most transportation, production and planning technologies. The use of LP can also sony vgp-bps13/q battery, sony vgp-bps13/s battery be seen in company management and microeconomics, since companies try to minimize costs, maximise profits within their resources.

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