@INPROCEEDINGS{Khomh09-WCRE-CodeSmellsChanges,
   AUTHOR       = {Foutse Khomh and Di Penta, Massimiliano and 
      Yann-Ga�l Gu�h�neuc},
   BOOKTITLE    = {Proceedings of the 16<sup>th</sup> Working Conference on Reverse Engineering (WCRE)},
   TITLE        = {An Exploratory Study of the Impact of Code Smells on 
      Software Change-proneness},
   YEAR         = {2009},
   OPTADDRESS   = {},
   OPTCROSSREF  = {},
   EDITOR       = {Giuliano Antoniol and Andy Zaidman},
   MONTH        = {October},
   NOTE         = {10 pages. \awardMost influential paper at SANER'19.},
   OPTNUMBER    = {},
   OPTORGANIZATION = {},
   PAGES        = {75--84},
   PUBLISHER    = {IEEE CS Press},
   OPTSERIES    = {},
   OPTVOLUME    = {},
   KEYWORDS     = {Topic: <b>Code and design smells</b>, 
      Venue: <c>WCRE</c>},
   URL          = {http://www.ptidej.net/publications/documents/WCRE09a.doc.pdf},
   PDF          = {http://www.ptidej.net/publications/documents/WCRE09a.ppt.pdf},
   ABSTRACT     = {Code smells are poor implementation choices, thought to 
      make object-orien\-ted systems hard to maintain. In this study, we 
      investigate if classes with code smells are more change-prone than 
      classes without smells. Specifically, we test the general hypothesis: 
      classes with code smells are not more change prone than other 
      classes. We detect 29 code smells in 9 releases of Azureus and in 13 
      releases of Eclipse, and study the relation between classes with 
      these code smells and class change-proneness. We show that, in almost 
      all releases of Azureus and Eclipse, classes with code smells are 
      more change-prone than others, and that specific smells are more 
      correlated than others to change-proneness. These results justify 
      \emph{a posteriori} previous work on the specification and detection 
      of code smells and could help focusing quality assurance and testing 
      activities.}
}

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In this study, we investigate if classes with code smells are more change-prone than classes without smells. Specifically, we test the general hypothesis: classes with code smells are not more change prone than other classes. We detect 29 code smells in 9 releases of Azureus and in 13 releases of Eclipse, and study the relation between classes with these code smells and class change-proneness. We show that, in almost all releases of Azureus and Eclipse, classes with code smells are more change-prone than others, and that specific smells are more correlated than others to change-proneness. These results justify \\empha posteriori previous work on the specification and detection of code smells and could help focusing quality assurance and testing activities.","bibtex":"@INPROCEEDINGS{Khomh09-WCRE-CodeSmellsChanges,\r\n AUTHOR = {Foutse Khomh and Di Penta, Massimiliano and \r\n Yann-Ga�l Gu�h�neuc},\r\n BOOKTITLE = {Proceedings of the 16^th Working Conference on Reverse Engineering (WCRE)},\r\n TITLE = {An Exploratory Study of the Impact of Code Smells on \r\n Software Change-proneness},\r\n YEAR = {2009},\r\n OPTADDRESS = {},\r\n OPTCROSSREF = {},\r\n EDITOR = {Giuliano Antoniol and Andy Zaidman},\r\n MONTH = {October},\r\n NOTE = {10 pages. \\awardMost influential paper at SANER'19.},\r\n OPTNUMBER = {},\r\n OPTORGANIZATION = {},\r\n PAGES = {75--84},\r\n PUBLISHER = {IEEE CS Press},\r\n OPTSERIES = {},\r\n OPTVOLUME = {},\r\n KEYWORDS = {Topic: <b>Code and design smells</b>, \r\n Venue: <c>WCRE</c>},\r\n URL = {http://www.ptidej.net/publications/documents/WCRE09a.doc.pdf},\r\n PDF = {http://www.ptidej.net/publications/documents/WCRE09a.ppt.pdf},\r\n ABSTRACT = {Code smells are poor implementation choices, thought to \r\n make object-orien\\-ted systems hard to maintain. In this study, we \r\n investigate if classes with code smells are more change-prone than \r\n classes without smells. Specifically, we test the general hypothesis: \r\n classes with code smells are not more change prone than other \r\n classes. We detect 29 code smells in 9 releases of Azureus and in 13 \r\n releases of Eclipse, and study the relation between classes with \r\n these code smells and class change-proneness. We show that, in almost \r\n all releases of Azureus and Eclipse, classes with code smells are \r\n more change-prone than others, and that specific smells are more \r\n correlated than others to change-proneness. 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