NDLI: Lack of Conceptual Cohesion of Methods: A new alternative to Lack Of Cohesion of Methods

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Lack of Conceptual Cohesion of Methods: A new alternative to Lack Of Cohesion of Methods

Content Provider	ACM Digital Library
Author	Jain, Vaibhav Gupta, Arpit
Abstract	While often defined in informal ways, class cohesion reflects important properties of modules in a software system. High cohesion for classes is one of the desirable properties in Object Oriented (OO) analysis as it supports program comprehension, testing, reusability, maintainability. Cohesion metrics have been used for quality assessment, fault prediction, software modularization etc. Existing approaches of class cohesion metrics are largely based on the structural information of the source code, such as attribute references in class methods. These cohesion metrics reflect particular interpretations of cohesion. However, only looking at structural aspect of cohesion is not sufficient for completely and accurately specifying class cohesion. So there is a need to pay attention on other aspects of cohesion like conceptual aspect. But only few conceptual metrics have been proposed till now. In our work, we have proposed a new set of cohesion metrics named LCCM (Lack of Conceptual Cohesion of Methods) metrics. These cohesion metrics are conceptual version of widely used LCOM (Lack of Cohesion of methods) metrics. LCOM metrics measure cohesion on structural information extracted entirely from the source code (e.g., attribute references in methods and method calls) that captures the degree to which the elements of a class belong together from a structural point of view. Proposed LCCM metrics use conceptual concerns embedded in source code entities for measuring class cohesion. These metrics are based on the analysis of latent topics embedded in comments and identifiers in source code. Latent Drichlet Allocation (LDA), a topic modeling tool is used for this purpose. These topics are used by proposed LCCM metrics to define similarity between methods of a class and on the basis of this similarity; proposed LCCM metrics define cohesion of the class. For the verification of proposed metrics, a case study on an open source java software system, called Rhino, is performed. The case study indicates that the novel cohesion metrics capture different aspects of class cohesion compared to the exiting cohesion metrics.
Starting Page	110
Ending Page	119
Page Count	10
File Format	PDF
ISBN	9781450334327
DOI	10.1145/2723742.2723753
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-02-18
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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