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Ensemble Learning Models for Classification and Selection of Web Services: A Review

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Computer Systems Science & Engineering 2022年第1期40卷 327-339页

作者： Muhammad Hasnain Imran Ghani seung ryul jeong Aitizaz Ali Monash University Petaling Jaya46150Malaysia Indiana University of Pennsylvania IndianaPA 15705USA Kookmin University Seoul02707Korea

This paper presents a review of the ensemble learning models proposed for web services classification,selection,and *** service is an evo-lutionary research area,and ensemble learning has become a hot spot to assess web services’earlier mentioned *** proposed research aims to review the state of art approaches performed on the interesting web services *** literature on the research topic is examined using the preferred reporting items for systematic reviews and meta-analyses(PRISMA)as a research *** study reveals an increasing trend of using ensemble learning in the chosen papers within the last ten ***ïve Bayes(NB),Support Vector Machine’(SVM),and other classifiers were identified as widely explored in selected *** analysis of web services classification suggests that web services’performance aspects can be investigated in future *** paper also identified performance measuring metrics,including accuracy,precision,recall,and f-measure,widely used in the literature.

关键词： Web services composition quality improvement class imbalance machine learning

An Ontology Based Test Case Prioritization Approach in Regression Testing

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Computers, Materials & Continua 2021年第4期67卷 1051-1068页

作者： Muhammad Hasnain seung ryul jeong Muhammad Fermi Pasha Imran Ghani Monash University Petaling Jaya46150Malaysia Kookmin University Seoul136Korea Indiana University of Pennsylvania PA15705USA

Regression testing is a widely studied research area,with the aim of meeting the quality challenges of software *** achieve a software system of good quality,we face high consumption of resources during *** overcome this challenge,test case prioritization(TCP)as a sub-type of regression testing is continuously investigated to achieve the testing *** study provides an insight into proposing the ontology-based TCP(OTCP)approach,aimed at reducing the consumption of resources for the quality improvement and maintenance of software *** proposed approach uses software metrics to examine the behavior of classes of software *** uses Binary Logistic Regression(BLR)and AdaBoostM1 classifiers to verify correct predictions of the faulty and non-faulty classes of software *** ontology is used to match the code metrics and class *** investigated five Java programs for the evaluation of the proposed approach,which was used to achieve code *** study has resulted in an average percentage of fault detected(APFD)value of 94.80%,which is higher when compared to other TCP *** future works,large sized programs in different languages can be used to evaluate the scalability of the proposed OTCP approach.

关键词： Software code metric machine learning faults detection testing

Performance Anomaly Detection in Web Services: An RNN-Based Approach Using Dynamic Quality of Service Features

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Computers, Materials & Continua 2020年第8期64卷 729-752页

作者： Muhammad Hasnain seung ryul jeong Muhammad Fermi Pasha Imran Ghani School of Information Technology Monash UniversitySubang Jaya47500Malaysia Graduate School of Business IT Kookmin UniversitySeoulKorea Department of Mathematical and Computer Sciences Indiana University of PennsylvaniaIndianaUSA.

Performance anomaly detection is the process of identifying occurrences that do not conform to expected behavior or correlate with other incidents or events in time series *** detection has been applied to areas such as fraud detection,intrusion detection systems,and network *** this paper,we propose an anomaly detection framework that uses dynamic features of quality of service that are collected in a simulated *** variants of recurrent neural networks-SimpleRNN,long short term memory,and gated recurrent unit are *** results reveal that the proposed method effectively detects anomalies in web services with high *** performance of the proposed anomaly detection framework is superior to that of existing approaches using maximum accuracy and detection rate metrics.

关键词： Point anomaly anomaly detection recurrent neural networks web services simulated data

Semantics-oriented approach for information interoperability and governance:towards user-centric enterprise architecture management

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第4期11卷 227-240页

作者： Imran GHANI Choon Yeul LEE Sung Hyun JUHN seung ryul jeong School of Business IT Kookmin University

Enterprise architecture (EA) efforts focus on business, technology, data, and application architecture, and their integration. However, less attention has been given to one of the most critical EA elements, i.e., users (EA audiences). As a result, existing EA management systems (EAMS) have become old, large, content-centric document-repositories that are unable to provide meaningful information of use to the enterprise users and aligned with their needs and functional scope. We argue that a semantic technology based mechanism focusing on enterprise information and user-centricity has the potential to solve this problem. In this context, we present a novel ontology-based strategy named the user-centric semantics-oriented EA (U-SEA) model. Based on this model, we have developed a user-centric semantics-oriented enterprise architecture management (U-SEAM) system. Our approach is generic enough to be used in a wide variety of user-centric EAM applications. The results obtained show computational feasibility to integrate and govern enterprise information and to reduce complexity with respect to interoperability between enterprise information and users.

关键词： Enterprise architecture management system (EAMS) Ontology Recommender system User-centric Semantic Web Framework

Empirical Analysis of Software Success Rate Forecasting During Requirement Engineering Processes

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Computers, Materials & Continua 2023年第1期74卷 783-799页

作者： Muhammad Hasnain Imran Ghani seung ryul jeong Muhammad Fermi Pasha Sardar Usman Anjum Abbas Lahore Leads University Lahore42000Pakistan Computer and Information Sciences Virginia Military InstituteLexingtonVA24450USA Graduate School of Business IT Kookmin UniversitySeoul136Korea School of Information Technology Monash UniversityBandar Sunway47500Malaysia Department of Computer Science and Software Engineering Grand Asian University Sialkot51040Pakistan Government Sarwar Shaheed Associate College Gujjar KhanRawalpindi46000Pakistan

Forecasting on success or failure of software has become an interesting and,in fact,an essential task in the software development *** order to explore the latest data on successes and failures,this research focused on certain questions such as is early phase of the software development life cycle better than later phases in predicting software success and avoiding high rework?What human factors contribute to success or failure of a software?What software practices are used by the industry practitioners to achieve high quality of software in their day-to-day work?In order to conduct this empirical analysis a total of 104 practitioners were recruited to determine how human factors,misinterpretation,and miscommunication of requirements and decision-making processes play their roles in software success *** discussed a potential relationship between forecasting of software success or failure and the development *** noticed that experienced participants had more confidence in their practices and responded to the questionnaire in this empirical study,and they were more likely to rate software success forecasting linking to the development *** analysis also shows that cognitive bias is the central human factor that negatively affects forecasting of software success *** results of this empirical study also validated that requirements’misinterpretation and miscommunication were themain causes behind software systems’*** has been seen that reliable,relevant,and trustworthy sources of information help in decision-making to predict software systems’success in the software *** empirical study highlights a need for other software practitioners to avoid such bias while working on software *** investigation can be performed to identify the other human factors that may impact software systems’success.

关键词： Cognitive bias misinterpretation of requirements miscommunication software success and failure prediction decision making

Performance of a New Ion Source for KSTAR Tokamak Plasma Heating

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Plasma Science and Technology 2014年第6期16卷 620-624页

作者： Tae-Seong KIM seung Ho jeong Doo Hee CHANG Kwang Won LEE Sang-ryul IN Korea Atomic Energy Research Institute

In the experimental campaign of 2010 and 2011 on KSTAR, the NBI-1 system was equipped with one prototype ion source and operated successfully, providing a neutral beam power of 0.7-1.6 MW to the tokamak plasma. The new ion source planned for the 2012 KSTAR campaign had a much more advanced performance compared with the previous one. The target performance of the new ion source was to provide a neutral deuterium beam of 2 MW to the tokamak plasma. The ion source was newly designed, fabricated, and assembled in 2011. The new ion source was then conditioned up to 64 A/100 keV over a 2-hour beam extraction and performance tested at the NB test stand （NBTS） at the Korea Atomic Energy Research Institute （KAERI） in 2012. The measured optimum perveance at which the beam divergence is a minimum was about 2.5μP, and the minimum beam divergent angle was under 1.0° at 60 keV. These results indicate that the 2.0 MW neutral beam power at 100 keV required for the heating of plasma in KSTAR can be delivered by the installation of the new ion source in the KSTAR NBI-1 system.

关键词： NBI ion source KSTAR neutral beam plasma heating positive based ion

Discharge Characteristics of Large-Area High-Power RF Ion Source for Positive and Negative Neutral Beam Injectors

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Plasma Science and Technology 2016年第12期18卷 1220-1224页

作者： Doo-Hee CHANG seung Ho jeong Min PARK Tae-Seong KIM Bong-Ki JUNG Kwang Won LEE Sang ryul IN Division of Nuclear Fusion Engineering & Technology Development Korea Atomic Energy Research Institute

A large-area high-power radio-frequency（RF） driven ion source was developed for positive and negative neutral beam injectors at the Korea Atomic Energy Research Institute（KAERI）. The RF ion source consists of a driver region, including a helical antenna and a discharge chamber, and an expansion region. RF power can be transferred at up to 10 kW with a fixed frequency of 2 MHz through an optimized RF matching system. An actively water-cooled Faraday shield is located inside the driver region of the ion source for the stable and steady-state operations of high-power RF discharge. Plasma ignition of the ion source is initiated by the injection of argongas without a starter-filament heating, and the argon-gas is then slowly exchanged by the injection of hydrogen-gas to produce pure hydrogen plasmas. The uniformities of the plasma parameter,such as a plasma density and an electron temperature, are measured at the lowest area of the driver region using two RF-compensated electrostatic probes along the direction of the shortand long-dimensions of the driver region. The plasma parameters will be compared with those obtained at the lowest area of the expansion bucket to analyze the plasma expansion properties from the driver region to the expansion region.

关键词： neutral beam injector RF ion source plasma ignition power loading plasma parameters

Electrochemical biosensors for point-of-care testing

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Bio-Design and Manufacturing 2024年第4期7卷 548-565页

作者： Jinsol Kim Juho jeong seung Hwan Ko Department of Mechanical Engineering Seoul National UniversitySeoul 08826Republic of Korea Institute of Advanced Machinery and Design(SNU-IAMD) Seoul National UniversitySeoul 08826Republic of Korea

Point-of-care testing(POCT)is the practice of diagnosing and monitoring diseases where the patient is located,as opposed to traditional treatment conducted solely in a medical laboratory or other clinical *** has been less common in the recent past due to a lack of portable medical devices capable of facilitating effective medical ***,recent growth has occurred in this field due to advances in diagnostic technologies,device miniaturization,and progress in wearable *** these developments,electrochemical sensors have attracted interest in the POCT field due to their high sensitivity,compact size,and *** are used in various applications,from disease diagnosis to health status *** this paper we explore recent advancements in electrochemical sensors,the methods of fabricating them,and the various types of sensing mechanisms that can be ***,we delve into methods for immobilizing specific biorecognition elements,including enzymes,antibodies,and aptamers,onto electrode surfaces and how these sensors are used in real-world POCT settings.

关键词： Point-of-care testing(POCT) Electrochemical sensor Enzyme Antibody Health care

Progress in light-to-frequency conversion circuits based on low dimensional semiconductors

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Nano Research 2021年第9期14卷 2938-2964页

作者： seung Gi Seo seung Yeob Kim Jinheon jeong Sung Hun Jin Department of Electronic Engineering Incheon National UniversityAcademy-ro 119Yeongsu-guIncheon 22012Republic of Korea

As the scaling down of Si devices in the range less than few nm has been expedited up to a physical limit of Si,low dimensional materials have been regarded as one of next generation *** a variety of applications,studies on photodetectors have been actively investigated with their novel optical properties as well as astonishing electrical ***,most of research has focused on single device-type photodetector(i.e.,photo-diode or photo-transistor).Contrary to common photodetector,light-to-frequency circuits(LFCs)are based on frequency reading with photosensitive ring oscillators,which has better noise immunity and reduced system complexity,thus,can be utilized to novel application even in internet of things(loT)and bio&medical *** this review,low dimensional materials based circuit level photodetectors,which are core elements as the form of either inverters or ring oscillators for demonstration of LFCs,are *** with the introduction of low dimensional materials and their optical properties for optoelectronics,a fundamental concept for LFCs is specifically ***,research progress on low dimensional material based photosensitive inverters is addressed according to the types of ***,as one of practical method for the improvement of photodetector performance,molecular doping technology is ***,complete system of LFCs and its digitization for demonstration of production level,and potential application in the respective four aspects,(i)medical SpO_(2) detection,(ii)biological fluidic system,(iii)auto-lighting in agriculture,and(iv)optical feedback and sensing systems,are presented as systematic way to address the envisioned practical applications for the future displays including virtual reality and augmented reality,and *** a remark,LFCs based on low dimensional semiconductors are expected to be one of core components in trillion’s sensor area.

关键词： photodetector light-to-frequency conversion circuit transition metal dichalcogenide carbon nanotube