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Applying blockchain-based method to smart contract classification for CPS applications

Digital Communications and Networks 2022年第6期8卷 964-975页

作者： Zigui Jiang Kai Chen Hailin Wen zibin zheng School of Software Engineering Sun Yat-Sen UniversityChina School of Mathematics Sun Yat-Sen UniversityChina School of Computer Science and Engineering Sun Yat-Sen UniversityChina

Smart contract has been the core of blockchain systems and other blockchain-based systems since Blockchain *** operations on blockchain are performed through the invocation and execution of smart *** leads to extensive combinations between blockchain,smart contract,Internet of Things(IoT)and Cyber-Physical System(CPS)applications,and then many blockchain-based IoT or CPS applications emerge to provide multiple benefits to the economy and *** this case,obtaining a better understanding of smart contracts will contribute to the easier operation,higher efficiency and stronger security of those blockchain-based systems and *** existing studies on smart contract analysis are based on similarity calculation and smart contract ***,smart contract is a piece of code with special characteristics and most of smart contracts are stored without any category labels,which leads to difficulties of smart contract *** the back end of a blockchain-based Decentralized Application(DApp)is one or several smart contracts,DApps with labeled categories and open source codes are applied to achieve a supervised smart contract classification.A three-phase approach is proposed to categorize DApps based on various data *** this approach,5,659 DApps with smart contract source codes and pre-tagged categories are first obtained based on massive collected DApps and smart contracts from Ethereum,State of the DApps and *** feature extraction and construction methods are designed to form multi-feature vectors that could present the major characteristics of ***,a fused classification model consisting of KNN,XGBoost and random forests is applied to the multi-feature vectors of all DApps for performing DApp *** experimental results show that the method is *** addition,some positive correlations between feature variables and categories,as well as several user behavior patterns of DAp

关键词： Blockchain Blockchain-based application Smart contract DApP classification Solidity

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Service fault tolerance for highly reliable service-oriented systems: an overview

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Science China(Information Sciences) 2015年第5期58卷 7-18页

作者： zheng zibin LYU Michael Rung Tsong WANG HuaiMin Shenzhen Research Institute The Chinese University of Hong Kong National Laboratory for Parallel & Distributed Processing National University of Defense Technology

Service-oriented systems are widely-employed in e-business, e-government, finance, management systems, and so on. Service fault tolerance is one of the most important techniques for building highly reliable service-oriented systems. In this paper, we provide an overview of various service fault tolerance techniques,including sections on fault tolerance strategy design, fault tolerance strategy selection, and Byzantine fault tolerance. In the first section, we introduce the design of static and dynamic fault tolerance strategies, as well as the major problems when designing fault tolerance strategies. After that, based on various fault tolerance strategies, in the second section, we identify significant components from a complex service-oriented system, and investigate algorithms for optimal fault tolerance strategy selection. Finally, in the third section, we discuss a special type of service fault tolerance techniques, i.e., the Byzantine fault tolerance.

关键词： fault tolerance software reliability Web service SOA

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Reliability Prediction for Internetware Applications:A Research Framework and Its Practical Use

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China Communications 2015年第12期12卷 13-20页

作者： zheng zibin MENG Jingke TAO Guanhong Michael R.Lyu School of Data and Computer Science Sun Yat-Sen University The Chinese University of Hong Kong

The open and dynamic environment of Internet computing demands new software reliability *** to efficiently and effectively build highly reliable Internet applications becomes a critical research *** paper proposes a research framework for predicting reliability of individual software entities as well as the whole Internet *** of the Internet environment are comprehensively analyzed and several reliability prediction approaches are proposed.A prototype is implemented and practical use of the proposed framework is also demonstrated.

关键词： Prediction prototype challenging perceived artifacts factorization executed runtime details similarity

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Collaborative deep learning across multiple data centers

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Science China(Information Sciences) 2020年第8期63卷 169-179页

作者： Haibo MI Kele XU Dawei FENG Huaimin WANG Yiming ZHANG zibin zheng Chuan CHEN Xu LAN College of Computer National University of Defense Technology School of Data and Computer Science Sun Yat-sen University School of Electronic Engineering and Computer Science Queen Mary University of London

Valuable training data is often owned by independent organizations and located in multiple data centers. Most deep learning approaches require to centralize the multi-datacenter data for performance purpose. In practice, however, it is often infeasible to transfer all data of different organizations to a centralized data center owing to the constraints of privacy regulations. It is very challenging to conduct the geo-distributed deep learning among data centers without the privacy leaks. Model averaging is a conventional choice for data parallelized training and can reduce the risk of privacy leaks, but its ineffectiveness is claimed by previous studies as deep neural networks are often non-convex. In this paper, we argue that model averaging can be effective in the decentralized environment by using two strategies, namely, the cyclical learning rate(CLR) and the increased number of epochs for local model training. With the two strategies,we show that model averaging can provide competitive performance in the decentralized mode compared to the data-centralized one. In a practical environment with multiple data centers, we conduct extensive experiments using state-of-the-art deep network architectures on different types of data. Results demonstrate the effectiveness and robustness of the proposed method.

关键词： collaborative learning multiple datacenters distributed machine learning

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An overview of Web3 technology:Infrastructure,applications,and popularity

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Blockchain(Research and Applications) 2024年第1期5卷 97-106页

作者： Renke Huang Jiachi Chen Yanlin Wang Tingting Bi Liming Nie zibin zheng School of Software Engineering Sun Yat-Sen UniversityGuangzhou 510275China Data61 ACT 2601Australia Zhejiang Sci-Tech University Hangzhou310018China Nanyang Technological University 639798Singapore

Web3,the next generation of the Internet,represents a decentralized and democratized *** it has garnered significant public interest and found numerous real-world applications,there is a limited understanding of people’s perceptions and experiences with *** this study,we conducted an empirical study to investigate the categories of Web3 applications and their popularity,as well as the potential challenges and opportunities within this emerging *** research was carried out in two *** the first phase,we analyzed 200 popular Web3 projects associated with 10 leading Web3 venture capital *** the second phase,we collected and examined code-related data from GitHub and market-related data from blockchain browsers(e.g.,Etherscan)for these *** analysis revealed that the Web3 ecosystem can be categorized into two groups,i.e.,Web3 infrastructure and Web3 applications,with each consisting of several subcategories or *** also gained insights into the popularity of these Web3 projects at both the code and market levels and pointed out the challenges in the Web3 ecosystem at the system,developer,and user levels,as well as the opportunities it *** findings contribute to a better understanding of Web3 for researchers and developers,which in turn promotes further exploration and advancement in this innovative field.

关键词： Web3 Blockchain Empirical study Survey

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Intelligent analysis for software data:research and applications

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Frontiers of Information Technology & Electronic Engineering 2022年第5期23卷 661-663页

作者： Tao ZHANG Xiaobing SUN zibin zheng Ge LI School of Computer Science and Engineering Macao University of Science and TechnologyMacaoChina School of Information Engineering Yangzhou UniversityYangzhou 225127China School of Software Engineering Sun Yat-sen UniversityZhuhai 519082China School of Computer Science Peking UniversityBeijing 100871China

Over the last few decades,software has been one of the primary drivers of economic growth in the *** life depends on reliable software;therefore,the software production process(i.e.,software design,development,testing,and maintenance)becomes one of the most important factors to ensure the quality of *** the production process,large amounts of software data(e.g.,source code,bug reports,logs,and user reviews)are generated.

关键词： software bug testing

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基于内分泌分数阶PI~λD~μ的核电站稳压器压力控制

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核动力工程 2018年第3期39卷 90-94页

作者：钱虹郑子彬郑秒上海电力学院自动化工程学院上海200090

针对系统较为复杂的核电站稳压器,为了获得令人满意的控制效果,在生物神经内分泌腺体激素调节的原理和分数阶微积分的理论基础上,提出了一种包含长环和短环的内分泌分数阶PI~λD~μ控制器(EFOPID)。一级控制器为比例控制,能够依据系统... 详细信息

针对系统较为复杂的核电站稳压器,为了获得令人满意的控制效果,在生物神经内分泌腺体激素调节的原理和分数阶微积分的理论基础上,提出了一种包含长环和短环的内分泌分数阶PI~λD~μ控制器(EFOPID)。一级控制器为比例控制,能够依据系统偏差来调整二级控制器的输入,实现快速、稳定地消除偏差;二级控制器采用间接算法(Oustaloup算法)实现的分数阶PI~λD~μ控制器(FOPID),能够使系统具有更加优良的快速性、高精度性和强抗干扰能力。仿真结果表明:EFOPID比传统的比例-积分-微分控制器(PID)控制具有更加优良的性能指标和抗扰动能力。

关键词：核电站稳压器内分泌间接算法(Oustaloup算法) 内分泌分数阶PI^λD^μ控制器(EFOPID)

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How to Effectively Apply ChatGPT in Software Engineering Education?——A Perspective from Undergraduate Students

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计算机教育 2023年第12期 22-30页

作者： Neng Zhang Zhuangbin Chen Pengyue Si zibin zheng Mingzhi Mao the School of Software Engineering SUN Yat-sen UniversityZhuhai519082China

As a highly advanced conversational AI chatbot trained on extensive datasets,ChatGPT has garnered significant attention across various domains,including academia,industry,and *** the field of education,existing studies primarily focus on 2 areas:Assessing the potential utility of ChatGPT in education by examining its capabilities and limitations;exploring the educational scenarios that could benefit from the integration of *** contrast to these studies,we conduct a user survey targeting undergraduate students specializing in Software Engineering,aiming to gain insights into their perceptions,challenges,and expectations regarding the utilization of *** on the results of the survey,we provide valuable guidance on the effective incorporation of ChatGPT in the realm of software engineering education.

关键词： Software engineering ChatGPT Undergraduate students User survey

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Meta-SEE:Intelligent and Interactive Learning Framework for Software Engineering Education Based on Metaverse and Metacognition

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计算机教育 2023年第12期 11-21页

作者： Jianguo Chen Mingzhi Mao Neng Zhang Leqiu Wang zibin zheng the School of Software Engineering Sun Yat-sen UniversityZhuhai519082China

With the rapid evolution of technology and the increasing complexity of software systems,there is a growing demand for effective educational approaches that empower learners to acquire and apply software engineering skills in practical *** paper presents an intelligent and interactive learning(Meta-SEE)framework for software engineering education that combines the immersive capabilities of the metaverse with the cognitive processes of metacognition,to create an interactive and engaging learning *** the Meta-SEE framework,learners are immersed in a virtual world where they can collaboratively engage with concepts and practices of software *** the integration of metacognitive strategies,learners are empowered to monitor,regulate,and adapt their learning *** incorporating metacognition within the metaverse,learners gain a deeper understanding of their own thinking processes and become self-directed *** addition,MetaSEE has the potential to revolutionize software engineering education by offering a dynamic,immersive,and personalized learning *** allows learners to engage in realistic software development scenarios,explore complex systems,and collaborate with peers and instructors in virtual spaces.

关键词： Interactive learning framework Metaverse Metacognition Software engineering education

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黄瓜新品系90-2品种特性及高产栽培技术

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北方园艺 2001年第2期 21-22页

作者：郑子斌天津市西青区农林局天津300380

:90 -2是适合于春秋露地及秋延后大棚栽培的杂交一代黄瓜新品系。该品系抗病能力强 ,回头瓜多 ,丰产性突出 ,耐热性好 ,植株旺盛 ,瓜条顺直 ,有光泽 ,深绿 ,无黄线 ,商品性好 ,早期产量较对照津春 4号提高 1 8.1 % ,总产量较津春 4号提... 详细信息

:90 -2是适合于春秋露地及秋延后大棚栽培的杂交一代黄瓜新品系。该品系抗病能力强 ,回头瓜多 ,丰产性突出 ,耐热性好 ,植株旺盛 ,瓜条顺直 ,有光泽 ,深绿 ,无黄线 ,商品性好 ,早期产量较对照津春 4号提高 1 8.1 % ,总产量较津春 4号提高 2 0 % 。

关键词：黄瓜高产栽培 90-2 品种特性

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