NDLI: Cohesion as changeability indicator in object-oriented systems

Content Provider	IEEE Xplore Digital Library
Author	Kabaili, H. Keller, R.K. Lustman, F.
Copyright Year	2001
Description	Author affiliation: Dept. of IRO, Montreal Univ., Que., Canada (Kabaili, H.)
Abstract	The assessment of the changeability of software systems is of major concern for buyers of large systems found in fast-moving domains such as telecommunications. One way of approaching this problem is to investigate the dependency between the changeability of the software and its design, with the goal of finding design properties that can be used as changeability indicators. In the realm of object oriented systems, experiments have been conducted showing that coupling between classes is such an indicator. However, class cohesion has not been quantitatively studied in respect to changeability. In the research presented, we set out to investigate whether cohesion is correlated with changeability. As cohesion metrics, LCC and LCOM were adopted, and for measuring changeability, a change impact model was used. The data collected on three test systems of industrial size indicate no such correlation. Manual investigation of classes supposed to be weakly cohesive showed that the metrics used do not capture all the facets of class cohesion. We conclude that cohesion metrics such as LCC and LCOM should not be used as changeability indicators.
Sponsorship	IEEE Comput Soc Tech Council on Software Eng (TCSE)
Starting Page	39
Ending Page	46
File Size	644586
Page Count	8
File Format	PDF
ISBN	0769510280
DOI	10.1109/CSMR.2001.914966
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-14
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Software quality Computer industry Software systems Object oriented modeling Software maintenance Large-scale systems Software design System testing Software metrics Software measurement
Content Type	Text
Resource Type	Article

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