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The bugbear of model checking is the explosion in the number of states as the number of processes increases. Industrial-sized problems are often intractable for model checkers. We modify the most popular model checker in use today, SPIN, by replacing its internal verification search engine by a guided, random-walk based simulator. The resulting tool is called RANSPIN. The guiding mechanism used in...
This paper provides an overview of work being done in the EntryPoint project, which is examining the first course work in computing degrees. A key goal of this project is to move away from the traditional CS1/CS2 programming courses as the start of a computing degree. In addition, the project team is looking at how these ideas might be extended to BSSE degree programs. As such, this paper will discuss...
An algorithm to detect cracks in concrete bridges for the purpose of automating inspection of concrete bridges is presented. The algorithm combines linear structure modeling with principal component analysis (PCA) to detect cracks in images using a training set. PCA is a classical technique in feature detection; however, to improve the results of such algorithm the linear modeling is prior to PCA...
Database dependencies are first-order sentences describing the semantics of databases. Decision problems concerning dependencies divide into local problem, such as whether a set of dependencies logically implies another dependency, and global problems, such as whether a set of dependencies is redundant. In this paper we investigate global problems, that of recognizing properties of sets of dependencies...
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