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Community Smell Occurrence Prediction on Multi-Granularity by Developer-Oriented Features and Process Metrics

Journal of computer Science & technology 2022年第1期37卷 182-206页

作者： Zi-Jie Huang Zhi-Qing Shao Gui-Sheng Fan Hui-Qun Yu Xing-Guang Yang Kang Yang Department of Computer Science and Engineering East China University of Science and TechnologyShanghai 200237China Shanghai Key Laboratory of Computer Software Testing and Evaluating Shanghai 200237China Shanghai Engineering Research Center of Smart Energy Shanghai 200237China

Community smells are sub-optimal developer community structures that hinder *** studies performed smell prediction and provided refactoring guidelines from a top-down aspect to help community ***,refactoring smells also requires bottom-up effort from every ***,supportive measures and guidelines for them are not available at a fine-grained *** recent work revealed developers'personalities and working states could influence community smells'emergence and variation,we build prediction models with experience,sentiment,and development process features of developers considering three smells including Organizational Silo,Lone Wolf,and Bottleneck,as well as two related classes including smelly developer and smelly *** predict the five classes in the individual granularity,and we also generate forecasts for the number of smelly developers in the community *** proposed models achieve F-measures ranging from 0.73 to 0.92 in individual-wide within-project,time-wise,and cross-project prediction,and mean R2 performance of 0.68 in community-wide Smelly Developer *** also exploit SHAP(SHapley Additive exPlanations)to assess feature importance to explain our *** conclusion,we suggest developers with heavy workload should foster more frequent communication in a straightforward and polite way to build healthier communities,and we recommend community shepherds to use the forecasting model for refactoring planning.

关键词： community smell developer sentiment socio-technical analysis empirical software engineering

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Remote software testing system based on grid workflow

Remote software testing system based on grid workflow

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11th International Conference on computer Supported Cooperative Work in Design, CSCWD 2007

作者： Zhang, Shaohua Ding, Zhigang Zong, Yuwei Gu, Ning Dept. of Computing and Information Technology Fudan University Shanghai China Shanghai Development Center of Computer Software Technology Shanghai China

ISBN: (纸本)1424409632

The remote software testing system can easily integrate the testing tools and provide the friendly access and operation environment by introducing grid workflow. The grid service constructor of the system architecture can encapsulate the testing tools into as grid service. The grid workflow module handles the modeling, scheduling and monitoring of testing task through the input of web application module. The communication based on SOAP and its relative issues such as security and performance are discussed The adaptive scheduling algorithm is presented to implement automatically the testing tasks and improve the performance. The new system is scalable to integrate more testing tools, and provides remote automatic testing environment based on Web. ©2007 IEEE.

关键词： Scheduling algorithms

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Reinforcement Learning Application Testing Method based on Multi-attribute Fusion 9

Reinforcement Learning Application Testing Method based on M...

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9th International Conference on Dependable Systems and Their Applications, DSA 2022

作者： Cai, Lizhi Wang, Jin Chen, Mingang Wang, Jilong School of Information Science and Engineering East China University of Science and Technology Shanghai China Shanghai Development Center of Computer Software Technology Shanghai Key Laboratory of Computer Software Testing & Evaluating Shanghai China

ISBN: (数字)9781665488778

ISBN: (纸本)9781665488778

Reinforcement learning has been successfully applied to assess the reliability of applications, but the existing testing methods based on reinforcement learning have the problems of invalid interactive widgets and difficult training, resulting in low testing efficiency. In order to solve these problems, this paper proposes a lightweight application automation testing method of deep reinforcement learning based on multi-attribute fusion (MARTesting). First, the invalid widgets are removed by the difference operation of the attribute sets of the current and previous state, then the attributes of all widget elements on the page are abstracted into state as the input of the neural network, and a state is accurately determined by fusing the position and text information of page elements, finally combine the novelty of the state and the execution frequency of the action as a reward function. The experimental results on six open source applications show that the MARTesting method proposed in this paper has achieved significant improvements in code coverage and branch coverage compared with existing methods. © 2022 IEEE.

关键词： Reinforcement learning

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Design and Validation of a Hyper-converged Blockchain Hardware and software System Based on Domestic Chips 1st

Design and Validation of a Hyper-converged Blockchain Hardwa...

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1st Conference on Blockchain and Web3.0 technology Innovation and Application, BWTAC 2024

作者： Liu, Xiaolong Yuan, Bo Wu, Faguo Enterprise Technology Center Aerospace Legione Technology Co. Ltd Haidian Beijing100195 China School of Computer Science and Engineering Beihang University Haidian Beijing100191 China State Key Laboratory of Software Development Environment Beihang University Haidian Beijing100191 China Institute of Artificial Intelligence Beihang University Haidian Beijing100191 China Beihang University Haidian Beijing100191 China Beijing Advanced Innovation Center for Future Blockchain and Privacy Computing Beihang University Haidian Beijing100191 China

ISBN: (纸本)9789819794119

This paper proposes a hyper-converged blockchain hardware and software sys-tem based on domestic chips. By utilizing domestically firmware, the Linux operating system, X86 architecture Hygon processors, and ARM architecture Phytium processors, combined with servers, storage, network, and independently controllable blockchain technologies, the system achieves integrated hardware and software optimization. This significantly improves performance and scalability. Experimental results demonstrate that the system performs excellently in various high-security application scenarios, providing reliable solutions for government, finance, taxation, transportation, energy, and telecommunications sectors. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Firmware

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An Approach to Optimize Symbolic Execution in Ethereum Smart Contracts 24

An Approach to Optimize Symbolic Execution in Ethereum Smart...

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24th IEEE International Conference on software Quality, Reliability and Security Companion, QRS-C 2024

作者： Liu, Yi Cai, Lizhi Chai, Chenchen Ma, Yuan School of Information Science and Engineering East China University of Science and Technology Shanghai China Shanghai Development Center of Computer Software Technology Shanghai Key Laboratory of Computer Software Testing & Evaluating Shanghai China

ISBN: (纸本)9798350365658

As the application of smart contracts in blockchain technology becomes increasingly widespread, their security issues have emerged as a focal point of both research and practice. Although symbolic execution technology has been extensively applied for the detection of security vulnerabilities in smart contracts, its limitations in terms of execution efficiency and code coverage remain significant. In response to these challenges, this study introduces an innovative method named HoneyToken-DetectorRev, which optimizes traditional symbolic execution through program slicing technology, aiming to enhance the efficiency and effectiveness of smart contract security detection. By selecting ten smart contracts from the Ethereum platform, which vary in business logic and complexity, we conducted an empirical analysis of HoneyToken-DetectorRev. The experimental results demonstrate that this method significantly improves the efficiency of smart contract detection without sacrificing precision. This research not only provides an effective technical approach for the security detection of smart contracts but also offers theoretical and practical guidance for further enhancing the security of blockchain applications. © 2024 IEEE.

关键词： Smart contract

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Desensitization Method of Image Data in the Internet of Vehicles Based on Instance Segmentation 2

Desensitization Method of Image Data in the Internet of Vehi...

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2nd International Conference on Algorithms, Microchips, and Network Applications, AMNA 2023

作者： Li, Shuang Zhou, Yue Zhang, Xin Zhang, Meng School of Computer Science Fudan University 200433 China Shanghai Key Laboratory of Computer Software Testing and Evaluating Shanghai Development Center of Computer Software Technology 201112 China

ISBN: (纸本)9781510664791

With the continuous development of intelligent connected vehicle industry, cameras and other vehicle-mounted devices are widely used, so the amount of data collection is increasing. There is a large amount of sensitive information hidden in the image data generated by connected vehicles. Once the data leakage event occurs, it may cause very serious consequences. In order to improve the security of connected vehicle data and reduce the threat of sensitive information leakage in image data, this paper provides a desensitization process of connected vehicle image data, and desensitizes sensitive information based on instance segmentation technology. In this paper, a real road image dataset is collected, and realizes desensitization of the modified dataset based on proposed framework. © 2023 SPIE.

关键词： Vehicles

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SP-E: Security Evaluation Framework of In-vehicle Infotainment System based on Threat Analyses and Penetration Tests 2

SP-E: Security Evaluation Framework of In-vehicle Infotainme...

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2022 2nd International Conference on Communication technology and Information technology, ICCTIT 2022

作者： Li, Shuang Zhang, Xin Zhou, Yue Zhang, Meng School of Computer Science Fudan University 200433 China Shanghai Key Laboratory of Computer Software Testing and Evaluating Shanghai Development Center of Computer Software Technology 201112 China

With the increasing requirement of people, the functions of in-vehicle infotainment systems are becoming more and more abundant, and their security also affects the safety of vehicles. Therefore, it is more and more important to evaluate the security of the IVI system. This paper proposes a security evaluation framework for in-vehicle infotainment systems based on threat analyses and penetration tests. By constructing the data flow diagram of application scenarios, analyzing threats, combing the attack link diagram, combining white-box audit and black-box test, we use the characteristics of high efficiency of automatic tools and high accuracy of manual methods to set factor sets, and then the whole IVI system is evaluated by Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation. © Published under licence by IOP Publishing Ltd.

关键词： Data flow analysis

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ITIL process integration in the context of organization environment

ITIL process integration in the context of organization envi...

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2009 WRI World Congress on computer Science and Information Engineering, CSIE 2009

作者： Shaohua, Zhang Zhigang, Ding Yuwei, Zong Management School of Fudan University Shanghai 200433 China Shanghai Development Center of Computer Software Technology Shanghai 201112 China

ISBN: (纸本)9780769535074

ITIL (IT Infrastructure Library) provides a framework of best practice guidance for IT service management based on process, and has grown to become the most widely accepted approach to IT service management in the world. ITIL processes are implemented so that they underpin the organization business, and play the core role in the framework. The paper presents ITIL process integration architecture in the context of organization environment from the viewpoint of security, knowledge, information, control and semantics. The architecture illustrates the integration relationships between ITIL processes and organization environment. Actually the ITIL processes are executed in the complex organization environment, and ITIL tools should be interactive with the organization systems. Finally we outline how the integration architecture can be implemented with Web services modeling, composition, scheduling, and other contemporary Web services technologies. The integration architecture facilitates our organization implementation of ITIL processes and tool. © 2008 IEEE.

关键词： Semantics

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Named entity recognition method of blockchain patent text based on deep learning 3

Named entity recognition method of blockchain patent text ba...

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3rd International Conference on Electronic Information Engineering, Big Data, and computer technology, EIBDCT 2024

作者： Yang, Guangguang Niu, Sen Dai, Bingrong Zhang, Bofeng Li, Chao Jiang, Yangjing School of Computer and Information Engineering Institute for Artificial Intelligence Shanghai Polytechnic University Shanghai China Shanghai Development Center of Computer Software Technology Shanghai China

ISBN: (纸本)9781510680449

As blockchain technology research continues to advance, named entity recognition within blockchain patent texts has emerged as a fundamental cornerstone for various other tasks. In light of the absence of a publicly accessible corpus within the current realm of blockchain technology, as well as the challenges posed by insufficient text semantic expression, the dearth of semantic features, and the intricacies associated with capturing diverse word vector representations. This paper us of annotated blockchain patent texts and proposes the MBBC MacBert-BiLSTM-CRF MBBC model for named entity recognition in blockchain patents. The model employs embedding the feature layer to vectorize the input text, enriching text information and mitigating polysemy issues. Text feature information is acquired through the long short-term memory network, and the conditional random field model is integrated to enforce label relationships, yielding an optimal label sequence. In this study, the accuracy rate of BAT (Blockchain Application technology, BAT) on the self-constructed corpus achieves 91%, with a recall rate of 96% and an Fl value of 93%, representing a notable enhancement compared to mainstream models. Ablation experiments further demonstrate that the model in this paper effectively performs named entity recognition tasks associated with blockchain technology and subject content. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Blockchain

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A reliable workflow for cyber-physical system components substitution

A reliable workflow for cyber-physical system components sub...

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2012 IEEE 12th International Conference on computer and Information technology, CIT 2012

作者： Wang, Peng Xiang, Yang Dai, Bing Rong College of Electronics and Information Engineering Tongji University Shanghai China Development Center of Computer Software Technology Shanghai China

ISBN: (纸本)9780769548586

Reliability of Cyber-Physical system (CPS) components substitution is an important issue for troubleshooting and system upgrading. In this paper, CPS components substitution is equated to CPS service substitution based on a service-oriented architecture of CPS. Then, a reliable workflow for CPS service substitution is proposed, which consists of two parts. One is a qualitative judgment method for CPS service substitution according to the relationship between service compatibility and substitution, based on Time-Space π-calculus with time operator and space operator. The other is a series of substitution processes from the judgment results above, based on service management theory. Finally, a case study is performed to show that how to apply the workflow to ensure CPS components' reliable substitution. The experiment result demonstrates that this workflow is reasonable and feasible. © 2012 IEEE.

关键词： Cyber Physical System

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