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Documents authored by Koschke, Rainer

Document
DOI: 10.4230/DagRep.2.2.21
Software Clone Management Towards Industrial Application (Dagstuhl Seminar 12071)

Authors: Rainer Koschke, Ira D. Baxter, Michael Conradt, and James R. Cordy

Published in: Dagstuhl Reports, Volume 2, Issue 2 (2012)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 12071 ``Software Clone Management Towards Industrial Application''. Software clones are identical or similar pieces of code or design. A lot of research has been devoted to software clones. Unlike previous research, this seminar put a particular emphasis on industrial application of software clone management methods and tools and aimed at gathering concrete usage scenarios of clone management in industry, which will help to identify new industrially relevant aspects in order to shape the future research. Talks were presented by industrial participants and working groups were formed to discuss issues in clone detection, presentation, and refactoring. In addition we developed a unified conceptual model to capture clone information required to support a common notion of clone data and for interoperability to foster exchange of data among researchers and tools in practice. The main focus of current research is clones in source code -- therefore, we also looked into ways of extending our research to other types of software artifacts. Last but not least, we discussed how clone management activities may be integrated into the process of software development.
Cite as

Rainer Koschke, Ira D. Baxter, Michael Conradt, and James R. Cordy. Software Clone Management Towards Industrial Application (Dagstuhl Seminar 12071). In Dagstuhl Reports, Volume 2, Issue 2, pp. 21-57, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2012)

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@Article{koschke_et_al:DagRep.2.2.21,
  author =	{Koschke, Rainer and Baxter, Ira D. and Conradt, Michael and Cordy, James R.},
  title =	{{Software Clone Management Towards Industrial Application (Dagstuhl Seminar 12071)}},
  pages =	{21--57},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2012},
  volume =	{2},
  number =	{2},
  editor =	{Koschke, Rainer and Baxter, Ira D. and Conradt, Michael and Cordy, James R.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.2.2.21},
  URN =		{urn:nbn:de:0030-drops-34775},
  doi =		{10.4230/DagRep.2.2.21},
  annote =	{Keywords: Software clones, code redundancy, clone detection, redundancy removal, software refactoring, software reengineering, plagiarism detection, copyright infringement, source differencing}
}
Document
DOI: 10.4230/DagSemProc.06301.1
06301 Abstracts Collection – Duplication, Redundancy, and Similarity in Software

Authors: Rainer Koschke, Andrew Walenstein, and Ettore Merlo

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

Abstract
From 23.07.06 to 26.07.06, the Dagstuhl Seminar 06301 ``Duplication, Redundancy, and Similarity in Software'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Rainer Koschke, Andrew Walenstein, and Ettore Merlo. 06301 Abstracts Collection – Duplication, Redundancy, and Similarity in Software. In Duplication, Redundancy, and Similarity in Software. Dagstuhl Seminar Proceedings, Volume 6301, pp. 1-12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{koschke_et_al:DagSemProc.06301.1,
  author =	{Koschke, Rainer and Walenstein, Andrew and Merlo, Ettore},
  title =	{{06301 Abstracts Collection – Duplication, Redundancy, and Similarity in Software}},
  booktitle =	{Duplication, Redundancy, and Similarity in Software},
  pages =	{1--12},
  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.06301.1},
  URN =		{urn:nbn:de:0030-drops-9729},
  doi =		{10.4230/DagSemProc.06301.1},
  annote =	{Keywords: Software clones, code redundancy, clone detection, redundancy removal, software refactoring, software}
}
Document
DOI: 10.4230/DagSemProc.06301.2
06301 Summary – Duplication, Redundancy, and Similarity in Software

Authors: Andrew Walenstein, Rainer Koschke, and Ettore Merlo

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

Abstract
This paper summarizes the proceedings and outcomes of the Dagstuhl Seminar 06301. The purpose of the seminar was to bring together a broad selection of experts on duplication, redundancy, and similarity in software in order to: synthesize a comprehensive understanding of the topic area, appreciate the diversity in the topic, and to critically evaluate current knowledge. The structure of the seminar was specifically formulated to evoke such a synthesis and evaluation. We report here the success of this seminar and summarize its results, much of which is a record of working groups charged with discussing the topics of interest.
Cite as

Andrew Walenstein, Rainer Koschke, and Ettore Merlo. 06301 Summary – Duplication, Redundancy, and Similarity in Software. In Duplication, Redundancy, and Similarity in Software. Dagstuhl Seminar Proceedings, Volume 6301, pp. 1-8, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{walenstein_et_al:DagSemProc.06301.2,
  author =	{Walenstein, Andrew and Koschke, Rainer and Merlo, Ettore},
  title =	{{06301 Summary – Duplication, Redundancy, and Similarity in Software}},
  booktitle =	{Duplication, Redundancy, and Similarity in Software},
  pages =	{1--8},
  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.06301.2},
  URN =		{urn:nbn:de:0030-drops-9717},
  doi =		{10.4230/DagSemProc.06301.2},
  annote =	{Keywords: Duplication, redundancy, similarity, code clone, clone detector, refactor, code smells, software evolution, program development, visualization, softwa}
}
Document
DOI: 10.4230/DagSemProc.06301.12
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.
Cite as

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}
}
Document
DOI: 10.4230/DagSemProc.06301.13
Survey of Research on Software Clones

Authors: Rainer Koschke

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

Abstract
This report summarizes my overview talk on software clone detection research. It first discusses the notion of software redundancy, cloning, duplication, and similarity. Then, it describes various categorizations of clone types, empirical studies on the root causes for cloning, current opinions and wisdom of consequences of cloning, empirical studies on the evolution of clones, ways to remove, to avoid, and to detect them, empirical evaluations of existing automatic clone detector performance (such as recall, precision, time and space consumption) and their fitness for a particular purpose, benchmarks for clone detector evaluations, presentation issues, and last but not least application of clone detection in other related fields. After each summary of a subarea, I am listing open research questions.
Cite as

Rainer Koschke. Survey of Research on Software Clones. In Duplication, Redundancy, and Similarity in Software. Dagstuhl Seminar Proceedings, Volume 6301, pp. 1-24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{koschke:DagSemProc.06301.13,
  author =	{Koschke, Rainer},
  title =	{{Survey of Research on Software Clones}},
  booktitle =	{Duplication, Redundancy, and Similarity in Software},
  pages =	{1--24},
  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.06301.13},
  URN =		{urn:nbn:de:0030-drops-9625},
  doi =		{10.4230/DagSemProc.06301.13},
  annote =	{Keywords: Software redundancy, code clone, software evolution, clone detector, empirical evaluation}
}
Document
DOI: 10.4230/DagSemRep.365
Software Architecture: Recovery and Modelling (Dagstuhl Seminar 03061)

Authors: Rick Kazman, Rainer Koschke, and Arie van Deursen

Published in: Dagstuhl Seminar Reports. Dagstuhl Seminar Reports, Volume 1 (2021)

Abstract
Cite as

Rick Kazman, Rainer Koschke, and Arie van Deursen. Software Architecture: Recovery and Modelling (Dagstuhl Seminar 03061). Dagstuhl Seminar Report 365, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2003)

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@TechReport{kazman_et_al:DagSemRep.365,
  author =	{Kazman, Rick and Koschke, Rainer and van Deursen, Arie},
  title =	{{Software Architecture: Recovery and Modelling (Dagstuhl Seminar 03061)}},
  pages =	{1--6},
  ISSN =	{1619-0203},
  year =	{2003},
  type = 	{Dagstuhl Seminar Report},
  number =	{365},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemRep.365},
  URN =		{urn:nbn:de:0030-drops-152455},
  doi =		{10.4230/DagSemRep.365},
}
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