Apt-pbo: Solving the Software Dependency Problem using Pseudo-Boolean Optimization
Paulo Trezentos,
ISCTE –
Abstract:
The installation of software packages (on Linux as well as in other package-driven platforms as eclipse plugins) depends on the correct resolution of dependencies and conflicts between packages. As an NP-complete problem, this is an hard task which todays technology does not address in an acceptable way. This seminar introduces a new approach to solving the software dependency problem in a Linux environment, devising a way for solving dependencies according to available packages and user preferences. We present the “apt-pbo” tool – the first available tool that solves dependencies in a complete and optimal way. The contribution is threefold. Our main finding is an efficient encoding of the dependencies and conflicts as a pseudo-boolean optimization problem without the need of ILP or SAT extra-steps. Second, we achieve this goal without sacrificing performance, a critical issue for a tool with user interaction. Finally, the developed tool is available under a free license allowing enhancement and benchmarking.
Date: 2009-Sep-25 Time: 13:00:00 Room: 336
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Title: Workshop Metabolism and mathematical models: Two for a tango – 2nd Edition
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The topic of this workshop is metabolism in general, with a special focus, although not exclusive, on parasitology. Besides an exploration of the biological, biochemical and biomedical aspects, the workshop will also aim at presenting some of the mathematical modelling, algorithmic theory and software development that have become crucial to explore such aspects.
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