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Documents authored by Walenstein, Andrew

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.06301.3
06301 Working Session Summary: Presentation and Visualization of Redundant Code

Authors: Andrew Walenstein, James R. Cordy, William S. Evans, Ahmed Hassan, Toshihiro Kamiya, Cory Kapser, and Ettore Merlo

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

Abstract
This report summarizes the proceedings of a workshop discussion session presentation and visualization of aspects relating to duplicated, copied, or cloned code. The main outcomes of the working session were: (a) a realization that two researchers had independently generated very similar methods for browsing and visualization clone "clusters," and (b) a list of questions for visualization, particularly in relation to how the "proximity" of clones may relate to interest in the clone.
Cite as

Andrew Walenstein, James R. Cordy, William S. Evans, Ahmed Hassan, Toshihiro Kamiya, Cory Kapser, and Ettore Merlo. 06301 Working Session Summary: Presentation and Visualization of Redundant Code. 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{walenstein_et_al:DagSemProc.06301.3,
  author =	{Walenstein, Andrew and Cordy, James R. and Evans, William S. and Hassan, Ahmed and Kamiya, Toshihiro and Kapser, Cory and Merlo, Ettore},
  title =	{{06301 Working Session Summary: Presentation and Visualization of Redundant Code}},
  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.06301.3},
  URN =		{urn:nbn:de:0030-drops-9661},
  doi =		{10.4230/DagSemProc.06301.3},
  annote =	{Keywords: Code clone, clone visualization, presentation, software visualization}
}
Document
DOI: 10.4230/DagSemProc.06301.5
Clone Detector Use Questions: A List of Desirable Empirical Studies

Authors: Thomas R. Dean, Massamiliano Di Penta, Kostas Kontogiannis, and Andrew Walenstein

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

Abstract
Code "clones" are similar segments of code that are frequently introduced by "scavenging" existing code, that is, reusing code by copying it and adapting it for a new use. In order to scavenge the code, the developer must be aware of it already, or must find it. Little is known about how tools - particularly search tools - impact the clone construction process, nor how developers use them for this purpose. This paper lists five outstanding research questions in this area and proposes sketches of designs for five empirical studies that might be conducted to help shed light on those questions.
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Thomas R. Dean, Massamiliano Di Penta, Kostas Kontogiannis, and Andrew Walenstein. Clone Detector Use Questions: A List of Desirable Empirical Studies. 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{dean_et_al:DagSemProc.06301.5,
  author =	{Dean, Thomas R. and Di Penta, Massamiliano and Kontogiannis, Kostas and Walenstein, Andrew},
  title =	{{Clone Detector Use Questions:  A List of Desirable Empirical Studies}},
  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.06301.5},
  URN =		{urn:nbn:de:0030-drops-9695},
  doi =		{10.4230/DagSemProc.06301.5},
  annote =	{Keywords: Code clone, clone detector, code search, reuse, code scavenging, empirical study}
}
Document
DOI: 10.4230/DagSemProc.06301.6
Code Clones: Reconsidering Terminology

Authors: Andrew Walenstein

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

Abstract
This report discusses terminology choices and considerations relating to copied or redundant code within software systems, i.e., relating to "code clones." Inadequacies of existing terminology are raised and alternative terms are discussed.
Cite as

Andrew Walenstein. Code Clones: Reconsidering Terminology. In Duplication, Redundancy, and Similarity in Software. Dagstuhl Seminar Proceedings, Volume 6301, pp. 1-7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{walenstein:DagSemProc.06301.6,
  author =	{Walenstein, Andrew},
  title =	{{Code Clones:  Reconsidering Terminology}},
  booktitle =	{Duplication, Redundancy, and Similarity in Software},
  pages =	{1--7},
  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.06301.6},
  URN =		{urn:nbn:de:0030-drops-9654},
  doi =		{10.4230/DagSemProc.06301.6},
  annote =	{Keywords: Code clone, exact clone, near clone, clone types, accidental clone, duplicate, copy, redundant}
}
Document
DOI: 10.4230/DagSemProc.06301.11
Similarity in Programs

Authors: Andrew Walenstein, Mohammad El-Ramly, James R. Cordy, William S. Evans, Kiarash Mahdavi, Markus Pizka, Ganesan Ramalingam, and Jürgen Wolff von Gudenberg

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

Abstract
An overview of the concept of program similarity is presented. It divides similarity into two types - syntactic and semantic - and provides a review of eight categories of methods that may be used to measure program similarity. A summary of some applications of these methods is included. The paper is intended to be a starting point for a more comprehensive analysis of the subject of similarity in programs, which is critical to understand if progress is to be made in fields such as clone detection.
Cite as

Andrew Walenstein, Mohammad El-Ramly, James R. Cordy, William S. Evans, Kiarash Mahdavi, Markus Pizka, Ganesan Ramalingam, and Jürgen Wolff von Gudenberg. Similarity in Programs. 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.06301.11,
  author =	{Walenstein, Andrew and El-Ramly, Mohammad and Cordy, James R. and Evans, William S. and Mahdavi, Kiarash and Pizka, Markus and Ramalingam, Ganesan and von Gudenberg, J\"{u}rgen Wolff},
  title =	{{Similarity in Programs}},
  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.06301.11},
  URN =		{urn:nbn:de:0030-drops-9681},
  doi =		{10.4230/DagSemProc.06301.11},
  annote =	{Keywords: Computer programs, similarity, code clone, software comparison, program metrics, Levenshtein distance, parameterized difference, feature space, shared}
}
Document
DOI: 10.4230/DagSemProc.06301.14
The Software Similarity Problem in Malware Analysis

Authors: Andrew Walenstein and Arun Lakhotia

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

Abstract
In software engineering contexts software may be compared for similarity in order to detect duplicate code that indicates poor design, and to reconstruct evolution history. Malicious software, being nothing other than a particular type of software, can also be compared for similarity in order to detect commonalities and evolution history. This paper provides a brief introduction to the issue of measuring similarity between malicious programs, and how evolution is known to occur in the area. It then uses this review to try to draw lines that connect research in software engineering (e.g., on "clone detection") to problems in anti-malware research.
Cite as

Andrew Walenstein and Arun Lakhotia. The Software Similarity Problem in Malware Analysis. In Duplication, Redundancy, and Similarity in Software. Dagstuhl Seminar Proceedings, Volume 6301, pp. 1-10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{walenstein_et_al:DagSemProc.06301.14,
  author =	{Walenstein, Andrew and Lakhotia, Arun},
  title =	{{The Software Similarity Problem in Malware Analysis}},
  booktitle =	{Duplication, Redundancy, and Similarity in Software},
  pages =	{1--10},
  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.06301.14},
  URN =		{urn:nbn:de:0030-drops-9640},
  doi =		{10.4230/DagSemProc.06301.14},
  annote =	{Keywords: Software, software evolution, commonality, program similarity, code clones, code smells, malicious software, malware, worms, Trojans, viruses, spyware}
}
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