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Subjectivity in Clone Judgment: Can We Ever Agree?

Authors: Cory Kapser, Paul Anderson, Michael Godfrey, Rainer Koschke, Matthias Rieger, Filip van Rysselberghe, and Peter Weißgerber

Published in: Dagstuhl Seminar Proceedings, Volume 6301, Duplication, Redundancy, and Similarity in Software (2007)

Abstract

An objective definition of what a code clone is currently eludes the field. A small study was performed at an international workshop to elicit judgments and discussions from world experts regarding what characteristics define a code clone. Less than half of the clone candidates judged had 80% agreement amongst the judges. Judges appeared to differ primarily in their criteria for judgment rather than their interpretation of the clone candidates. In subsequent open discussion the judges provided several reasons for their judgments. The study casts additional doubt on the reliability of experimental results in the field when the full criterion for clone judgment is not spelled out.

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Cory Kapser, Paul Anderson, Michael Godfrey, Rainer Koschke, Matthias Rieger, Filip van Rysselberghe, and Peter Weißgerber. Subjectivity in Clone Judgment: Can We Ever Agree?. In Duplication, Redundancy, and Similarity in Software. Dagstuhl Seminar Proceedings, Volume 6301, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{kapser_et_al:DagSemProc.06301.12,
  author =	{Kapser, Cory and Anderson, Paul and Godfrey, Michael and Koschke, Rainer and Rieger, Matthias and van Rysselberghe, Filip and Wei{\ss}gerber, Peter},
  title =	{{Subjectivity in Clone Judgment:  Can We Ever Agree?}},
  booktitle =	{Duplication, Redundancy, and Similarity in Software},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6301},
  editor =	{Rainer Koschke and Ettore Merlo and Andrew Walenstein},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.06301.12},
  URN =		{urn:nbn:de:0030-drops-9701},
  doi =		{10.4230/DagSemProc.06301.12},
  annote =	{Keywords: Code clone, study, inter-rater agreement, ill-defined problem}
}

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Subjectivity in Clone Judgment: Can We Ever Agree?

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