Automatic Web Service Composition Based on Behavior Network

2006 ◽  
Vol 10 (5) ◽  
pp. 728-732
Author(s):  
Myung-Chul Jung ◽  
◽  
Sung-Bae Cho
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Providers ◽  
Value Added ◽  
Web Service Composition ◽  
Rule Based System ◽  
Optimal Service ◽  
Amazon Web Services ◽  
Behavior Network

As Web services become more widely disseminated, tools are needed to help users find and integrate these services. As these services become more available, users and service providers will want to obtain new and value-added services by combining and reconfiguring existing services. We propose novel Web service composition based on a behavior network that selects services automatically through internal and external links with environmental information from sensor and goals. Optimal services are selected at each step, resulting in a globally optimal service sequence for achieving a preset goal. We developed our prototype using Amazon Web services to verify its feasibility. Experimental results comparing rule-based system and user tests demonstrated the potential of the behavior network for Web services applications.

The Research of Semantic Web Service Composition Framework Based on Ontology

2014 ◽  
Vol 912-914 ◽  
pp. 1473-1476
Author(s):  
Bo Yang ◽  
Ying Fang Li ◽  
Xiang Yang ◽  
Ying Jiang Li
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Service Composition ◽  
Service Providers ◽  
Value Added ◽  
Web Service Composition ◽  
Semantic Web Service ◽  
Paper Making ◽  
Semantic Web Service Composition

At present, more and more service providers carry on their business as a Web type. However, the function of individual Web services is very limited and the lack of semantic information, only can meet the needs for a single customer. In this paper, making Web services become an entities understood by the computer through introducing the concept of the Ontology. A framework of Semantic Web Service composition also is proposed based on Ontology for assembling basic Web services coming from different service providers and a solution is provided for to achieve value-added services based on a single service.

A Novel Physics Inspired Approach for Web Service Composition

2014 ◽  
Vol 11 (2) ◽  
pp. 67-84 ◽  
Author(s):  
Tanveer Ahmed ◽  
Abhishek Srivastava
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Oriented Architecture ◽  
Service Providers ◽  
Web Service Composition ◽  
Heterogeneous Services ◽  
Service Oriented ◽  
Service Consumer ◽  
Selection Of

Service oriented architecture has revolutionized the way a traditional business process is executed. The success of this architecture is Indue to the composition of multiple heterogeneous services at runtime. Web service composition is a mechanism where several web services are combined at runtime to build a complex application for a user. It is one of the most sought after processes in the context of semantic web. But, composition of web services at runtime is a difficult task owing to the availability of multiple service providers offering the same functionality. The process if exasperated by due conflicting preferences of a service consumer. In this paper, the authors address the issue of selecting a service based on Quality of Service (QoS) attributes. They utilize concepts customized from physics to create an environment that facilitates the selection of a best service from the set of similar services. The technique not only facilitates the selection of the service with the best QoS attributes, but distributes the load among expeditiously. Here in this paper, the authors concentrate on minimizing and equitably balancing the waiting time for a user. They conduct in silico experiments on multiple workflows to demonstrate the efficacy of the proposed technique to balance load efficiently among similar service offerings.

scholarly journals Mutation-Based Harmony Search Algorithm for Hybrid Testing of Web Service Composition

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Eckwijai Maythaisong ◽  
Wararat Songpan
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Providers ◽  
Search Algorithm ◽  
Harmony Search ◽  
Web Service Composition ◽  
Hybrid Testing ◽  
Business Plans ◽  
Business Goals

Web service composition is a method of developing a new web service from an existing one based on business goals. Web services selected for composition should provide accurate operational results and reliable applications. However, most alternative service providers have not yet fulfilled users’ needs in terms of services and processes. Service providers, in fact, have focused on enhancing nonfunctional attributes, such as efficiencies of time, cost, and availability, which still face limitations. Furthermore, it remains advantageous to compose services and suitably plan them around business plans. Thus, this study introduces hybrid testing using a combination of the functional and nonfunctional testing approaches. The former was used to design a test case through the equivalence class partitioning technique, and the latter was used to select suitable services for the test results. We find defects and appropriate solutions for combining services based on business requirements. The mutation-based harmony search (MBHS) algorithm is proposed to select web services and to compose with minimum defects. The results of this study reveal that MBHS can support a combination of various services more efficiently and dramatically than other metaheuristic methodologies. Additionally, it helps find appropriate solutions to compose services based on business plans.

Using Planning and Case-Based Reasoning for Service Composition

2010 ◽  
Vol 14 (5) ◽  
pp. 540-548 ◽  
Author(s):  
Chiung-Hon Leon Lee ◽  
◽  
Alan Liu ◽  
Huan-Hsian Huang ◽  
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Providers ◽  
Web Service Composition ◽  
User Needs ◽  
Case Based Reasoning ◽  
Service Model ◽  
Related Information ◽  
Case Based

Planning commonly applied to automating Web Service composition involves two problems - (i) overlooked user needs combined with services provided by the systems themselves and outside services providing a much more flexible service model. (ii) “Speeding up” and “facilitating” services by not recording information about service providers already having served users and about planning already processed. We propose merging internal and external services to meet user needs. Internal services include system functions designed to meet user needs. External services mean Web services provided by outside service providers. We plan to combine both types of services to create planning to meet user needs. We apply case-based reasoning to store planning and related information in a case base to make planning much faster when users have similar needs.

WEB SERVICE COMPOSITION AS A COMPOSITION OF VALID AND ROBUST SEMANTIC LINKS

2009 ◽  
Vol 18 (01) ◽  
pp. 1-62 ◽  
Author(s):  
FREDDY LÉCUÉ ◽  
ALEXANDRE DELTEIL ◽  
ALAIN LÉGER ◽  
OLIVIER BOISSIER
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
High Efficiency ◽  
Formal Model ◽  
Value Added ◽  
Web Service Composition ◽  
Preliminary Evaluation ◽  
Starting Point ◽  
Automated Composition

Automated composition of Web services or the process of forming new value-added Web services is one of the most promising challenges facing the Semantic Web today. Semantics enables Web service to describe capabilities together with their processes, hence one of the key elements for the automated composition of Web services. In this paper, we focus on the functional level of Web services i.e. services are described according to some input, output parameters semantically enhanced by concepts in a domain ontology. Web service composition is then viewed as a composition of semantic links wherein the latter links refer to semantic matchmaking between Web service parameters (i.e. outputs and inputs) in order to model their connection and interaction. The key idea is that the matchmaking enables, at run time, finding semantic compatibilities among independently defined Web service descriptions. By considering such a level of composition, a formal model to perform the automated composition of Web services i.e. Semantic Link Matrix, is introduced. The latter model is required as a starting point to apply problem-solving techniques such as regression (or progression)-based search for Web service composition. The model supports a semantic context in order to find correct, complete, consistent and robust plans as solutions. In this paper, an innovative and formal model for an AI (Artificial Intelligence) planning-oriented composition is presented. Our system is implemented and interacting with Web services which are dedicated to Telecom scenarios. The preliminary evaluation results showed high efficiency and effectiveness of the proposed approach.

Applying CBR Over an AI Planner for Dynamic Web Service Composition

2013 ◽  
Vol 8 (4) ◽  
pp. 36-47
Author(s):  
Fouad Henni ◽  
Baghdad Atmani
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Value Added ◽  
Research Area ◽  
Web Service Composition ◽  
Case Based Reasoning ◽  
Ai Planning ◽  
Childhood Immunization ◽  
Dynamic Web

Web services have emerged as a major technology for deploying automated interactions between distributed and heterogeneous applications. The main advantage of Web services composition is the possibility of creating value-added services by combining existing ones to achieve customized tasks. How to combine these services efficiently into an arrangement that is both functionally sound and architecturally realizable is a very challenging topic that has founded a significant research area within computer science. A great deal of recent Web-related research has concentrated on dynamic Web service composition. Most of proposed models for dynamic composition use semantic descriptions of Web services through the construction of domain ontology. In this paper, we present our approach to dynamically produce composite services. It is based on the use of two Artificial Intelligence (AI) techniques: Case-Based Reasoning (CBR) and AI planning. Our motivating scenario concerns a national system for the monitoring of childhood immunization.

QoS–Aware Web Service Composition using Weight Improved Particle Swarm Optimization

2021 ◽  
Vol 9 (2) ◽  
pp. 65-70
Author(s):  
Laishram Jenny Chanu ◽  
◽  
Arnab Paul ◽  
Keyword(s):  
Particle Swarm Optimization ◽  
Web Services ◽  
Web Service ◽  
Optimization Algorithm ◽  
Service Composition ◽  
Particle Swarm Optimization Algorithm ◽  
Particle Swarm ◽  
Web Service Composition ◽  
Swarm Optimization ◽  
Complex Query

Lots of Web Services are available which differ in their QoS values but can perform a similar task. Discovery mechanism selects the best Web Service according to their QoS values and functional attributes. Cases arise, where the discovery mechanism fails, as a user’s complex query cannot be satisfied by a single Web Service. This can be solved by Web Service composition where multiple Web Services are combined to give a composite Web Service which meet user’s complex query. Our work is mainly focused on composition of Web Services that efficiently meets the user’s query. Different algorithms have been discussed and used by different researchers in this field. One of the most blooming topics is the use of evolutionary algorithms in optimization problems. In our work, we have chosen Particle Swarm Optimization Algorithm approach to discover the best efficient composition. Then, Weight Improved Particle Swarm Optimization Algorithm is used to improve the results which were found to be quite satisfying and efficient.

Transactional-Aware Web Service Composition

2012 ◽  
pp. 116-141 ◽  
Author(s):  
Yudith Cardinale ◽  
Joyce El Haddad ◽  
Maude Manouvrier ◽  
Marta Rukoz
Keyword(s):  
Web Service ◽  
Service Composition ◽  
Fault Tolerant ◽  
Value Added ◽  
Web Service Composition ◽  
Control Flow ◽  
Transactional Model ◽  
Future Directions ◽  
A Value ◽  
Composition Process

Web Service (WS) composition consists in combining several WSs into a Composite WS (CWS), which becomes a value-added process. In order to provide reliable and fault-tolerant CWSs, several transactional-aware composition approaches have been proposed. However, as far as we know, no real classification survey of such approaches exists. This is the contribution of this chapter. Our classification distinguishes the more relevant and recent propositions in two groups: approaches based on WS transactional properties and the ones also integrating QoS criteria to the composition process. All these studied approaches are compared according to several criteria: the transactional model used or proposed, the control flow model used or automatically generated, the mechanism proposed to verify the transactional property of the composition, the step(s) of the composition process involved in, and the protocols or the standard languages used or extended. This classification allows underlining the lacks and the future directions which should be studied.

Service Composition Verification and Validation

2013 ◽  
pp. 200-219
Author(s):  
Manuel Palomo-Duarte
Keyword(s):  
Web Services ◽  
Software Development ◽  
Web Service ◽  
Service Composition ◽  
Web Service Composition ◽  
Verification And Validation ◽  
Loosely Coupled ◽  
Program Testing ◽  
Traditional Program ◽  
Programming Systems

Web services are changing software development thanks to their loosely coupled nature and simple adoption. They can be easily composed to create new more powerful services, allowing for large programming systems. Verification and validation techniques try to find defects in a program to minimize losses that its malfunction could cause. Although many different approaches have been developed for “traditional” program testing, none of them have proven definitive. The problem is even more challenging for new paradigms like web services and web service compositions, because of their dynamic nature and uncommon web service-specific instructions. This chapter surveys the different approaches to web service and web service composition verification and validation, paying special attention to automation. When no tools are available for a given technique, academic efforts are discussed, and challenges are presented.

WSBen

2011 ◽  
pp. 739-758 ◽  
Author(s):  
Seog-Chan Oh ◽  
Dongwon Lee
Keyword(s):  
Statistical Analysis ◽  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Network Models ◽  
Web Service Composition ◽  
Ai Planning ◽  
Underlying Network ◽  
Test Sets ◽  
Diverse Data

In this article, a novel benchmark toolkit, WSBen, for testing web services discovery and composition algorithms is presented. The WSBen includes: (1) a collection of synthetically generated web services files in WSDL format with diverse data and model characteristics; (2) queries for testing discovery and composition algorithms; (3) auxiliary files to do statistical analysis on the WSDL test sets; (4) converted WSDL test sets that conventional AI planners can read; and (5) a graphical interface to control all these behaviors. Users can finetune the generated WSDL test files by varying underlying network models. To illustrate the application of the WSBen, in addition, we present case studies from three domains: (1) web service composition; (2) AI planning; and (3) the laws of networks in Physics community. It is our hope that WSBen will provide useful insights in evaluating the performance of web services discovery and composition algorithms. The WSBen toolkit is available at: http://pike.psu.edu/sw/wsben/.

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