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Machine learning (ML) has rapidly grown in popularity, becoming vital to many industries. Currently, the research on code smells in ML applications lacks tools and studies that address the identification and validity of ML-specific code…

Software Engineering · Computer Science 2025-08-05 Peter Hamfelt , Ricardo Britto , Lincoln Rocha , Camilo Almendra

In this paper, we present a tertiary systematic literature review of previous surveys, secondary systematic literature reviews, and systematic mappings. We identify the main observations (what we know) and challenges (what we do not know)…

Software Engineering · Computer Science 2020-08-11 Guilherme Lacerda , Fabio Petrillo , Marcelo Pimenta , Yann Gael Gueheneuc

Recent advances in large language models (LLMs) have accelerated their adoption in software engineering contexts. However, concerns persist about the structural quality of the code they produce. In particular, LLMs often replicate poor…

Software Engineering · Computer Science 2026-01-19 Alejandro Velasco , Daniel Rodriguez-Cardenas , Dipin Khati , David N. Palacio , Luftar Rahman Alif , Denys Poshyvanyk

Developing test code may be a time-consuming task that usually requires much effort and cost, especially when it is done manually. Besides, during this process, developers and testers are likely to adopt bad design choices, which may lead…

Software Engineering · Computer Science 2020-03-13 Nildo Silva Junior , Larissa Rocha , Luana Almeida Martins , Ivan Machado

Code smells are seen as major source of technical debt and, as such, should be detected and removed. However, researchers argue that the subjectiveness of the code smells detection process is a major hindrance to mitigate the problem of…

Software Engineering · Computer Science 2023-03-07 José Pereira dos Reis , Fernando Brito e Abreu , Glauco de Figueiredo Carneiro

Eradication of code smells is often pointed out as a way to improve readability, extensibility and design in existing software. However, code smell detection in large systems remains time consuming and error-prone, partly due to the…

Software Engineering · Computer Science 2012-05-01 Tiago Pessoa , Fernando Brito e Abreu , Miguel Pessoa Monteiro , Sergio Bryton

The identification of code smells is largely recognized as a subjective task. Consequently, the automated detection tools available are insufficient to deal with the whole subjectivity involved in the task, requiring human validation.…

Software Engineering · Computer Science 2021-10-07 Luiz Felipi Junionello , Rafael de Mello

Test smells, similar to code smells, can negatively impact both the test code and the production code being tested. Despite extensive research on test smells in languages like Java, Scala, and Python, automated tools for detecting test…

Software Engineering · Computer Science 2024-05-08 Partha P. Paul , Md Tonoy Akanda , M. Raihan Ullah , Dipto Mondal , Nazia S. Chowdhury , Fazle M. Tawsif

During software development, poor design and implementation choices can detrimentally impact software maintainability. Design smells, recurring patterns of poorly designed fragments, signify these issues. Role-stereotypes denote the generic…

Software Engineering · Computer Science 2024-06-28 Daniel Ogenrwot , Joyce Nakatumba-Nabende , John Businge , Michel R. V. Chaudron

Code smells signal violations of design principles that degrade the internal quality of evolving software systems. Although many tools detect such anomalies using static metrics, they often ignore the development context in which smells…

Software Engineering · Computer Science 2026-05-21 Matheus dos Santos Viegas , Adrian Gabriel Keller dos Santos , Kleinner Farias , Robson Keemps da Silva

Context. Code smells, which are recurring anomalies in design or style, have been extensively researched in professional code. However, their significance in block-based projects created by novices is still largely unknown. Block-based…

Software Engineering · Computer Science 2025-07-24 Ricardo Hidalgo Aragón , Jesús M. González-Barahona , Gregorio Robles

Automated deployment and management of Cloud applications relies on descriptions of their deployment topologies, often referred to as Infrastructure Code. As the complexity of applications and their deployment models increases, developers…

Context: Code smells (CS) tend to compromise software quality and also demand more effort by developers to maintain and evolve the application throughout its life-cycle. They have long been catalogued with corresponding mitigating solutions…

Software Engineering · Computer Science 2023-03-07 José Pereira dos Reis , Fernando Brito e Abreu , Glauco de Figueiredo Carneiro , Craig Anslow

This study addresses the challenge of detecting code smells in large-scale software systems using machine learning (ML). Traditional detection methods often suffer from low accuracy and poor generalization across different datasets. To…

Large Language Models (LLMs) have revolutionized code generation, evolving from static tools into dynamic conversational interfaces that facilitate complex, multi-turn collaborative programming. While LLMs exhibit remarkable proficiency in…

Software Engineering · Computer Science 2026-03-31 Binquan Zhang , Li Zhang , Lin Shi , Song Wang , Yuwei Qian , Linhui Zhao , Fang Liu , An Fu , Yida Ye

With the continuous growth of the internet market, games are becoming more and more popular worldwide. However, increased market competition for game demands developers to write more efficient games in terms of performance, security, and…

Software Engineering · Computer Science 2020-02-17 Vartika Agrahari , Sridhar Chimalakonda

Similarly to production code, code smells also occur in test code, where they are called test smells. Test smells have a detrimental effect not only on test code but also on the production code that is being tested. To date, the majority of…

Software Engineering · Computer Science 2021-08-11 Tongjie Wang , Yaroslav Golubev , Oleg Smirnov , Jiawei Li , Timofey Bryksin , Iftekhar Ahmed

Mobile apps have become essential of our daily lives, making code quality a critical concern for developers. Behavioural code smells are characteristics in the source code that induce inappropriate code behaviour during execution, which…

Software Engineering · Computer Science 2026-04-14 Houcine Abdelkader Cherief , Florent Avellaneda , Naouel Moha

Duplicated code or code clones are a kind of code smell that have both positive and negative impacts on the development and maintenance of software systems. Software clone research in the past mostly focused on the detection and analysis of…

Software Engineering · Computer Science 2020-05-05 Chanchal K. Roy , Minhaz F. Zibran , Rainer Koschke

Software systems naturally evolve, and this evolution often brings design problems that cause system degradation. Architectural smells are typical symptoms of such problems, and several of these smells are related to undesired dependencies…

Software Engineering · Computer Science 2018-08-21 J. Andrés Díaz-Pace , Antonela Tommasel , Daniela Godoy