Unifying simulation and optimization of strategic sourcing and transportation
Proceedings of the 40th Conference on Winter Simulation
Optimisation modelling for software developers
CP'12 Proceedings of the 18th international conference on Principles and Practice of Constraint Programming
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Proposed and developed is the language Service Composition (SC) CoJava, which extends the programming language Java with (1) a modular service composition framework; (2) an extensible library of supply-chain modeling components such as items, services and business metrics; and (3) decision choice constructs for program variables, assertions of constraints and a designation of a program variable to serve as the objective to be minimized or maximized. The SC-CoJava provides not only the procedural "simulation-like" semantics of Java, but also an optimization semantics. The optimization semantics of SC-CoJava amounts to (1) finding an optimal instantiation of values into the choice-variables, based on automatic construction of a standard optimization model and solving it using a mathematical programming solver, and then (2) executing the Java program procedurally, where all the decision choice values are taken from the optimization result.