NDLI: My Repository Runneth Over: An Empirical Study on Diversifying Data Sources to Improve Feature Search

Content Provider	IEEE Xplore Digital Library
Author	Ratanotayanon, S. Hye Jung Choi Sim, S.E.
Copyright Year	2010
Abstract	Research on feature location that applies information retrieval techniques have experimented the kinds of inputs to the corpus and the algorithms that could be used. At first, only source code was used. Later extraction techniques were improved, and data from other software tools and analyses were used to expand or augment the repository. But, does having more diverse data in the repository always produce better results? In this paper, we report on an empirical study to examine the effect of increasing data diversity to improve feature location through search. In particular, we looked at the effect of including: i) change sets from revision control system, ii) tickets from issue trackers, and iii) elements from a Static Dependency Graph (SDG). We searched for three features of Jajuk, an open source Java jukebox, and two features of jEdit, an open source Java text editor. We used four different corpuses built with a combination of the above data. We used Eclipse’s code search and an index built with source code as baseline conditions. We found that it is not always better to have more diverse data. Adding SDG data to change sets increased recall, but drove down precision. Adding data from issue trackers had little effect and in one case lowered recall. We also found that large-scale refactoring of the code decreases the effectiveness using change sets for feature location.
Starting Page	206
Ending Page	215
File Size	294975
Page Count	10
File Format	PDF
ISBN	9781424476046
ISSN	10636897
e-ISBN	9781424476039
e-ISBN	9780769541136
DOI	10.1109/ICPC.2010.33
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-30
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Java Vocabulary Program comprehension Feature location Software performance Information retrieval Control systems Data mining USA Councils Change sets Large-scale systems Component Software tools Informatics Code search
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
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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