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Dynamic services selection algorithm in web services composition supporting cross-enterprises collaboration

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Journal of Central South University 2009年第2期16卷 269-274页

作者：胡春华陈晓红梁昔明 School of Business Central South University School of Computer and Electronic Engineering Hunan University of Commerce School of Information Science and Engineering Central South University

Based on the deficiency of time convergence and variability of web services selection for services composition supporting cross-enterprises collaboration,an algorithm QCDSS(QoS constraints of dynamic web services selection)to resolve dynamic web services selection with QoS global optimal path,was *** essence of the algorithm was that the problem of dynamic web services selection with QoS global optimal path was transformed into a multi-objective services composition optimization problem with QoS *** operations of the cross and mutation in genetic algorithm were brought into PSOA(particle swarm optimization algorithm),forming an improved algorithm(IPSOA)to solve the QoS global optimal *** analysis and experimental results indicate that the algorithm can better satisfy the time convergence requirement for web services composition supporting cross-enterprises collaboration than the traditional algorithms.

关键词： web services composition optimal service selection improved particle swarm optimization algorithm (IPSOA) cross-enterprises collaboration

Immune Algorithm for Selecting Optimum services in web services composition

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 221-225页

作者： GAO Yan NA Jun ZHANG Bin YANG Lei GONG Qiang DAI Yu College of Information Science and Engineering Northeastern University Shenyang 110004 LiaoningChina

For the problem of dynamic optimization in web services composition, this paper presents a novel approach for selecting optimum web services, which is based on the longest path method of weighted multistage graph. We propose and implement an Immune Algorithm for global optimization to construct composed web services. Results of the experimentation illustrates that the algorithm in this paper has a powerful capability and can greatly improve the efficiency and veracity in service selection.

关键词： web services composition optimum selection Immune Algorithm

A Testing Method for web services composition Based on Data-Flow

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Wuhan University Journal of Natural Sciences 2008年第4期13卷 455-460页

作者： HOU Jun XU Baowen XU Lei WANG Di XU Junling School of Computer Science and Engineering SoutheastUniversity Nanjing 211189 Jiangsu China State Key Laboratory of Software Engineering WuhanUniversity Wuhan 430072 Hubei China

This paper proposes a method of data-flow testing for web services composition. Firstly, to facilitate data flow analysis and constraints collecting, the existing model representation of business process execution language （BPEL） is modified in company with the analysis of data dependency and an exact representation of dead path elimination （DPE） is proposed, which over-comes the difficulties brought to dataflow analysis. Then defining and using information based on data flow rules is collected by parsing BPEL and web services description language （WSDL） documents and the def-use annotated control flow graph is created. Based on this model, data-flow anomalies which indicate potential errors can be discovered by traversing the paths of graph, and all-du-paths used in dynamic data flow testing for web services composition are automatically generated, then testers can design the test cases according to the collected constraints for each path selected.

关键词： web services composition business process execution language (BPEL) web services description language (WSDL) data flow all-du-path

A Framework for web services composition Modeling Process

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A Framework for Web Services Composition Modeling Process

作者： Ayman EI-Refey（艾门）大连海事大学

学位级别：硕士

The modeling business processes still remains the responsibility of IT *** has produced a gap between business process modeling technology and business users,who are the actual authors of business *** this gap has become a major concern in utilizing the full potential of information technology in businesses and it can swing control of processes from IT departments to business departments,which in turn,leads to in-time deployment of competitive business *** this thesis,we present a framework is proposed for modeling web services based business processes that span across multiple *** approach provides abstraction from the low level XML details of the modeling language and facilitates business users,who are not so technology proficient,in modeling their own executable business *** ECA-based control-rule formalism is introduced to modularize the monolithic BPEL4WS process *** generation of code for BPEL4WS and corresponding description file is *** algorithms are devised for this purpose that are embedded in a prototype *** part of the framework,A relational model has been devised to store the information which is complete in all aspects and provides direct mapping to the execution *** model acts as an intermediary platform to manipulate and infer compositional *** abstraction from underlying syntax of the language is the main concern of this research,the modeler does not have to provide each and every detail of the XML contructs used in the *** have been presented that extract data and automatically infer further information from the relational *** algorithms also provide assistance to the modeler at *** interaction patterns between the process and its partner services have been identified that provide the basis for abstraction from the roles played by each side.Using such an approach,business users not only can model

关键词： web services web services composition business process modeling BPEL4WS composition language abstraction control rules directed graphs

Typed formal model for WS-CDL specification of web services composition

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Journal of Southeast University(English Edition) 2008年第3期24卷 300-307页

作者：辜希武李瑞轩卢正鼎华中科技大学计算机科学与技术学院武汉430074

In order to formally reason and verify web services composition described by web services choreography specification WS-CDL,a typed formal model named typed Abstract WS-CDL（web services choreography description language）for WS-CDL specifications is *** typed Abstract WS-CDL,the syntax of type and session,typing rules and operational semantics are formalized;the collaborations of web services are formally described by sessions;the operational semantics of a session can help to formally reason the execution of the choreography;the typing rules can help to formally check the data type consistency of exchanged information between web services and capture run-time errors due to type ***,the concepts of type assumption set extension and type assumption set compatibility are proposed,and the merging algorithm of type assumption sets is defined so as to eliminate type assumption *** on the formal model,typed mapping rules for mapping web services choreography to orchestration is also *** the typed mapping rules,orchestration stubs and their type assumption sets can be generated from a given choreography; thus, web services composition can be verified at choreography and orchestration levels,*** model is proved to have properties of type safety,and how the model can help to reason and verify web services composition is illustrated through a case study.

关键词： typed model web services composition web services choreography description language

ON UML ACTIVITY DIAGRAM-BASED web services composition DYNAMIC BEHAVIORAL MODELING

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ON UML ACTIVITY DIAGRAM-BASED WEB SERVICES COMPOSITION DYNAM...

Dynamic Service Discovery, composition and Reconfiguration in a Model Mapping Business Process to web services

2007中国宁波国际计算机科学与技术学术大会

作者： Dang Weichao Bai Shangwang School of Computer Science ＆ Technology Taiyuan University of Science and Technology

This paper describes web services composition by adopting UML modeling method including static structural modeling and dynamic behavioral modeling with a focus on the latter and elaborates on the important issues in dynamic behavioral modeling,such as correspondence between the control-flow patterns of UML activity diagram（AD） and those of web services composition,data patterns supported by AD,and expanding the actions concept to facilitate the model *** proposes a new method for the dynamic behavioral modeling,the transition rules based on OCL and the mapping between the elements of UML AD and those of BPEL4 WS,and finally illustrates the above-mentioned formula by a case of orders management.

关键词： web services composition Dynamic behavioral modeling Model transformation UML activity diagram

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Journal of Computer and Communications 2016年第9期4卷 24-39页

作者： Zulqarnain Abdul Jabbar Asia Samreen Department of Computer Science Bahria University Karachi Pakistan

In any organization where SOA has been implemented, all of the web services are registered in UDDI and users’ needs are served by using appropriate web services. So in this paper, we will try to discover a service from repository first that can provide the required output to the user. The process becomes difficult when a single service is not able to fulfill a user’s need and we need a combination of services to answer complex needs of users. In our paper, we will suggest a simpler approach for dynamic service composition using a graph based methodology. This will be a design time service composition. This approach uses the functional and non-functional parameters of the services to select the most suitable services for composition as per user’s need. This approach involves “service classification” on the basis of functional parameters, “service discovery” on the basis of user’s need and then “service composition” using the selected services on the basis of non-functional parameters like response time, cost, security and availability. Another challenge in SOA implementation is that, once the composition has performed, some services may become faulty at runtime and may stop the entire process of serving a user’s need. So, we will also describe a way of “dynamic service reconfiguration” in our approach that will enable us to identify and replace a faulty service that is violating the SLA or is not accessible anymore. This service reconfiguration is done without redoing or reconfiguring the entire composition. In the end, to simulate the proposed approach, we will represent a prototype application built on php 5.4 using My SQL database at backend.

关键词： SOA web services composition web services Classification web services Discovery web services Recomposition web services Reconfiguration

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

HIAWSC: An Immune Algorithm Based Heuristic web Service composition Framework

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Chinese Journal of Electronics 2014年第3期23卷 579-585页

作者： XU Jiuyun Stephan Reiff-Marganiec School of Computer and Communication Engineering China University of Petroleum Network and Switch Technology Key Laboratory Beijing University of Posts and Telecommunication Department of Computer Science University of Leicester

The introduction of of web services has led to web service composition being a focus of many researchers. Composing web services using workflows is seen as the most realistic method from an industrial viewpoint. Amongst other method, the use of natural computing methods has been proposed previously to automate web service composition. The need for a fast response when computing the most suitable sequence of services is addressed in this paper. In particular, we propose a novel heuristic immune algorithm with an efficient encoding and mutation method. The algorithm involves two steps: an immune selection operation, which is maintaining antibody population diversity and the clonal selection. The use of a vaccine during the evolution provides heuristic information that accelerates the convergence. Our experimental results illustrate that the proposed heuristic immune algorithm is very effective in improving the convergence *** also provide a schema analysis for this method.

关键词： web services composition Immune algorithm Heuristic information Schema analysis