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duplicated code Pattern Mining in Visual Programming Languages 2021

Duplicated Code Pattern Mining in Visual Programming Languag...

29th ACM Joint Meeting on European Software Engineering Conference and Symposium on the Foundations of Software Engineering (ESEC/FSE)

作者： Terra-Neves, Miguel Nadkarni, Joao Ventura, Miguel Resende, Pedro Veiga, Hugo Alegria, Antonio OutSystems Lisbon Portugal

ISBN: (纸本)9781450385626

Visual Programming Languages (VPLs), coupled with the high-level abstractions that are commonplace in visual programming environments, enable users with less technical knowledge to become proficient programmers. However, the lower skill floor required by VPLs also entails that programmers are more likely to not adhere to best practices of software development, producing systems with high technical debt, and thus poor maintainability. duplicated code is one important example of such technical debt. In fact, we observed that the amount of duplication in the OUTSYSTEMS VPL code bases can reach as high as 39%. duplicated code detection in text-based programming languages is still an active area of research with important implications regarding software maintainability and evolution. However, to the best of our knowledge, the literature on duplicated code detection for VPLs is very limited. We propose a novel and scalable duplicated code pattern mining algorithm that leverages the visual structure of VPLs in order to not only detect duplicated code, but also high-light duplicated code patterns that explain the reported duplication. The performance of the proposed approach is evaluated on a wide range of real-world mobile and web applications developed using OUTSYSTEMS.

关键词： duplicated code visual programming maximum common sub-graph maximum satisfiability

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Source code enhancement using reduction of duplicated code

Source code enhancement using reduction of duplicated code

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International Conference on Software Engineering

作者： Nasehi, Seyyed Mehdi Sotudeh, Gholam Reza Gomrokchi, Maziar Shiraz Univ Technol Dept IT Modarres Blvd Shiraz Iran Shiraz Azad Univ Dept Engn Shiraz Iran

ISBN: (纸本)9780889866416

In this paper a novel method is proposed which is capable of detecting code smell incidents of duplicated code in a source code. The proposed method is superior to other methods since it is capable of detecting subtle duplicates of code (or code clones) which is hard to detect using those methods. The proposed method first transforms source code into a middle language format. Being in this middle format each instruction represents an atomic simple operation. Then these instructions are compared and perceived matches are aggregated to form the largest possible code clone. Finally we have compared the results of our proposed method with some other methods and have shown that the results of those methods are subsets of the result set which is developed by our new method.

关键词： duplicated code code smell detection refactoring

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A AST AND CONTEXT BASED duplicated code DETECTING METHOD

A AST AND CONTEXT BASED DUPLICATED CODE DETECTING METHOD

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3rd China-Ireland International Conference on Information and Communications Technologies

作者： Liu, Wei Liu, Chuanchang Gong, Yunzhan Chen, Junliang Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China

ISBN: (纸本)9780863419218

This paper presents a duplicated code detecting method based on AST (Abstract Syntax Tree) and context, and designs a flexible rule-based parameterized matching method which is able to locate the consecutive duplicated code by applying the string matching algorithm to some special kinds of AST nodes. Then, the method calculates the searching distance according to the variable' association between code lines in the context to detect the nonconsecutive duplicated code. Both the time complexity and the space complexity of the method are O(N). The experiment results prove that the method can detect nonconsecutive duplicated codes.

关键词： duplicated code Abstract syntax tree Parameterized matching method Matching distance

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DT:an upgraded detection tool to automatically detect two kinds of code smell:duplicated code and Feature Envy

DT:an upgraded detection tool to automatically detect two ki...

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作者： Xinghua Liu Cheng Zhang School of Computer Science and Technology Anhui University iflytek Co. Ltd

code smell is unreasonable programming,and is produced when software developers don't have good habits of development and experience of development and other *** becomes more and more chaotic,the code structure become *** smell can make degradation of code *** also can make some difficulties for software developers to understand and maintain the source code of projects,and then cause unnecessary maintenance *** study presents an evolutionary version of detection tool *** can support detection of two kinds of code smell-duplicated code and Feature *** the same time,two types of code smell are mainly detected by two detection thoughts:dynamic programming algorithm(DP) and abstract grammar tree(AST).DP can be applied in code smell-duplicated *** uses the similarity between comparative lines to determine whether there is duplicated code;AST is used to detect code smell-feature envy,AST use tree structure to represent the source code,the grammatical structure of the source code transforms to each tree *** statistical analysis of existence of these nodes,we can determine whether is a kind of code smell or *** experiment,detection tool DT compares with four famous detection tools Checkstyle,PMD,iPlasma and *** accuracy is higher than above detection *** addition,these four well-known tools can't support detection of large industrial projects,while DT can support detection of industrial *** future work,we want to detect more kinds of code smell,meanwhile we want update detection precision of detection tool.

关键词： code smell detection tool duplicated code feature envy

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A Retrospective on Developing code Clone Detector CCFinder and Its Impact

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 2025年第3期51卷 808-813页

作者： Kamiya, Toshihiro Kusumoto, Shinji Inoue, Katsuro Shimane Univ Interdisciplinary Fac Sci & Engn Dept Math & Comp Sci Matsue Shimane 6908504 Japan Osaka Univ Grad Sch Informat Sci & Technol Dept Comp Sci Suita Osaka 5650871 Japan Nanzan Univ Fac Sci & Technol Dept Software Engn Nagoya Aichi 4668673 Japan

In this retrospective article of our TSE paper "CCFinder: A Multilinguistic Token-Based code Clone Detection System for Large Scale Source code" (Kamiya et al., 2002), we revisit the reasons why we became deeply involved in code clone research, and explore what has driven its frequent citation in many studies. Furthermore, we reflect on why not only our own lab, but also numerous researchers and tool developers have pursued code clone research and the development of related tools.

关键词： Cloning codes Visualization Source coding Detectors Industries Feature extraction Multilingual Seminars Open source software CCFinder code clone duplicated code industry collaboration

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Finding clones with dup: Analysis of an experiment

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 2007年第9期33卷 608-621页

作者： Baker, Brenda S. 140 North Rd Berkeley Hts NJ 07922 USA

An experiment was carried out by a group of scientists to compare different tools and techniques for detecting duplicated or near-duplicated source code. The overall comparative results are presented elsewhere. This paper takes a closer look at the results for one tool, Dup, which finds code sections that are textually the same or the same except for systematic substitution of parameters such as identifiers and constants. Various factors that influenced the results are identified and their impact on the results is assessed via rerunning Dup with changed options and modifications. These improve the performance of Dup with regard to the experiment and could be incorporated into a postprocessor to be used with other tools.

关键词： redundant code duplicated code software clones

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CCFinder: A multilinguistic token-based code clone detection system for large scale source code

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 2002年第7期28卷 654-670页

作者： Kamiya, T Kusumoto, S Inoue, K Osaka Univ Grad Sch Engn Sci Funct & Configurat Grp RPRESTOJST Toyonaka Osaka 5608531 Japan

A code clone is a code portion in source files that is identical or similar to another. Since code clones are believed to reduce the maintainability of software, several code clone detection techniques and tools have been proposed. This paper proposes a new clone detection technique, which consists of the transformation of input source text and a token-by-token comparison. For its implementation with several useful optimization techniques, we have developed a tool, named CCFinder, which extracts code clones in C, C++, Java, COBOL, and other source files. As well, metrics for the code clones have been developed. In order to evaluate the usefulness of CCFinder and metrics, we conducted several case studies where we applied the new tool to the source code of JDK, FreeBSD, NetBSD, Linux, and many other systems. As a result, CCFinder has effectively found clones and the metrics have been able to effectively identify the characteristics of the systems. In addition, we have compared the proposed technique with other clone detection techniques.

关键词： code clone duplicated code CASE tool metrics maintenance

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Comparison and evaluation of clone detection tools

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 2007年第9期33卷 577-591页

作者： Bellon, Stefan Koschke, Rainer Antoniol, Giuliano Krinke, Jens Merlo, Ettore Axiv GmbH D-70569 Stuttgart Germany Univ Bremen D-28334 Bremen Germany Ecole Polytech Dept Genie Informat Montreal PQ H3T 1J4 Canada Fernuniv D-58097 Hagen Germany Ecole Polytech Dept Comp Engn Montreal PQ H3C 3A7 Canada

Many techniques for detecting duplicated source code (software clones) have been proposed in the past. However, it is not yet clear how these techniques compare in terms of recall and precision as well as space and time requirements. This paper presents an experiment that evaluates six clone detectors based on eight large C and Java programs (altogether almost 850 KLOC). Their clone candidates were evaluated by one of the authors as an independent third party. The selected techniques cover the whole spectrum of the state-of-the-art in clone detection. The techniques work on text, lexical and syntactic information, software metrics, and program dependency graphs.

关键词： code duplicated code software clones

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Clone Detection Method Selection Based on Bandit Algorithm: a Preliminary Analysis 16

Clone Detection Method Selection Based on Bandit Algorithm: ...

引用

16th IEEE International Workshop on Software Clones (IWSC)

作者： Tabo, Takeru Kudo, Takuto Tsunoda, Masateru Tahir, Amjed Bennin, Kwabena Ebo Toda, Koji Nakasai, Keitaro Monden, Akito Kindai Univ Higashiosaka Osaka Japan Massey Univ Palmerston North New Zealand Wageningen UR Wageningen Netherlands Fukuoka Inst Technol Fukuoka Japan Kagoshima Coll NIT Kirishima Japan Okayama Univ Okayama Japan

ISBN: (数字)9781665484473

ISBN: (纸本)9781665484473

Various clone detection methods have been proposed in the past, with results varying depending on the combination of the methods and parameters setting used (i.e., configurations). To help with the selection of a suitable clone detection configuration, we propose Bandit Algorithm (BA) approach that can help in evaluating the configuration used dynamically while using detection methods. Our preliminary analysis showed that our approach is able to identify the best configurations from four used code clone detection methods.

关键词： online optimization multi-armed bandit external validity duplicated code

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A Constraint Programming Approach to Conflict-aware Optimal Scheduling of Prioritized code Clone Refactoring

A Constraint Programming Approach to Conflict-aware Optimal ...

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11th IEEE International Working Conference on Source code Analysis and Manipulation/IEEE International Conference on Software Maintenance/IEEE International Symposium on Web Systems Evolution/VISSOFT/MESOCA

作者： Zibran, Minhaz F. Roy, Chanchal K. Univ Saskatchewan Dept Comp Sci Saskatoon SK S7N 5C9 Canada

ISBN: (纸本)9780769543475

duplicated code, also known as code clones, are one of the malicious 'code smells' that often need to be removed through refactoring for enhancing maintainability. Among all the potential refactoring opportunities, the choice and order of a set of refactoring activities may have distinguishable effect on the design/code quality. Moreover, there may be dependencies and conflicts among those refactorings. The organization may also impose priorities on certain refactoring activities. Addressing all these conflicts, priorities, and dependencies, manual formulation of an optimal refactoring schedule is very expensive, if not impossible. Therefore, an automated refactoring scheduler is necessary, which will maximize benefit and minimize refactoring effort. In this paper, we present a refactoring effort model, and propose a constraint programming approach for conflict-aware optimal scheduling of code clone refactoring.

关键词： Cloning Equations Mathematical model Measurement Object oriented modeling Programming Schedules code clone conflict aware optimal scheduling constraint handling constraint programming constraint programming approach duplicated code maintainability malicio

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