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- W84654041 abstract "Clustering layouts of software systems combine two important aspects: they reveal groups of related artifacts of the software system, and they produce a visualization of the results that is easy to understand. Co-change visualization is a lightweight method for computing clustering layouts of software systems for which the change history is available. This paper describes CCVISU, a tool that implements cochange visualization. It extracts the co-change graph from a version repository, and computes a layout, which positions the artifacts of the software system in a two- or threedimensional space. Two artifacts are positioned closed together in the layout if they were often changed together. The tool is designed as a framework, easy to use, and easy to integrate into reengineering environments; several formats for data interchange are already implemented. The graph layout is currently provided in VRML and SVG format, in a standard text format, or directly drawn on the screen. 1 Concepts Visualizations of the structure of software systems are helpful during reengineering and maintenance activities because they accelerate the understanding process. The extraction and comprehension of the subsystem structure is one of the most important tasks in this field, which is the more difficult the less documentation is available about the system. The change history —stored in the version control repository— is almost always available. We propose to compute a clustering layout based on the change history of the system. Intuitively, two artifacts have close positions in such a layout if they were often changed together, and they have distant positions if they were rarely commonly changed. The method consists of two components. First, we build an abstraction of the system’s change history, the so called co-change graph. Second, a forcedirected graph-layout algorithm is used to compute a layout of the co-change graph, were the algorithm is driven by an energy model that is designed to produce clustering layouts. In the following, we briefly explain these two components of the method (cf. [2] for details)." @default.
- W84654041 created "2016-06-24" @default.
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- W84654041 date "2005-01-01" @default.
- W84654041 modified "2023-09-24" @default.
- W84654041 title "Co-Change Visualization" @default.
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