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  1. Hani Abdeen, Houari Sahraoui, Osama Shata, Nicolas Anquetil, and Stéphane Ducasse. Towards Automatically Improving Package Structure While Respecting Original Design Decisions. In International Working Conference on Reverse Engineering (WCRE'13), IEEE Computer Society Press, 2013. PDF 

    Recent studies have largely investigated the detection of class design anomalies. They proposed a large set of metrics that help in detecting those anomalies and in predicting the quality of class design. While those studies and the proposed metrics are valuable, they do not address the particularities of Java interfaces. Interfaces define the contracts that spell out how software modules and logic units interact with each other. This paper proposes a list of design anomalies related to Java interfaces. We identify and describe those anomalies via real examples, taken from well-known Java applications. Then we define three metrics help in automatically estimate the interface design quality, regarding the proposed design anomalies. We evaluate our metrics on three large Java applications. The results show that our metrics are realistic and help in qualifying the interface design, and in identifying candidate refactoringRecently, there has been an important progress in applying search-based optimization techniques to the problem of software re-modularization. Yet, a major part of the existing body of work addresses the problem of modularizing software systems from scratch, regardless of the existing packages structure. This paper presents a novel multi-objective optimization approach for improving existing packages structure. The optimization ap- proach aims at increasing the cohesion and reducing the coupling and cyclic connectivity of packages, by modifying as less as pos- sible the existing packages organization. Moreover, maintainers can specify several constraints to guide the optimization process with regard to extra design factors. To this contribution, we use the Non-Dominated Sorting Genetic Algorithm (NSGA-II). We evaluate the optimization approach through an experiment covering four real-world software systems. The results promise the effectiveness of our optimization approach for improving existing packages structure by doing very small modifications.