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We describe a general technique for identifying modules in legacy code. The method is based on concept analysis|a branch of lattice theory that can be used to identify similarities among a set of objects based on their attributes. We discuss how concept analysis can identify potential modules using both \positive" and \negative" information. We present an(More)
The use of type casts is pervasive in C. Although casts provide great flexibility in writing programs, their use obscures the meaning of programs, and can present obstacles during maintenance. Casts involving pointers to structures (C structs) are particularly problematic, because by using them, a programmer can interpret any memory region to be of any(More)
The fields of cluster analysis and concept analysis are both used to identify patterns in data. Concept analysis identifies similarities between sets of objects based on their attributes. Cluster analysis groups objects with related characteristics based on some notion of distance. In this paper, we investigate connections between these two approaches. In(More)
§0 Introduction The fields of cluster analysis and concept analysis are both used to identify patterns in data. Concept analysis identifies similarities between sets of objects based on their attributes. Cluster analysis groups objects with related characteristics based on some notion of distance. In this paper, we investigate connections between these two(More)
The epidemiology of smoking, factors which motivated students at the University of the Witwatersrand, Johannesburg, to smoke, to continue smoking or to stop smoking, and student awareness of the health hazards of smoking were investigated. Analysis of a random sample comprising 13% of the 12426 full-time undergraduate students at the university revealed(More)
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