Concepts and Operations of Two Research Projects on Web Services and Context at Zayed University

2011 ◽  
pp. 388-407
Author(s):  
Zakaria Maamar
Keyword(s):  
Web Services ◽  
Web Service ◽  
Software Agents ◽  
Web Services Composition ◽  
Research Projects ◽  
Low Level ◽  
Services Composition ◽  
The Web

This chapter presents two research projects applying context in Web services. A Web service is an accessible application that other applications and humans can discover and invoke to satisfy multiple needs. While much of the work on Web services has up to now focused on low-level standards for publishing, discovering, and triggering Web services, several arguments back the importance of making Web services aware of their context. In the ConCWS project, the focus is on using context during Web-services composition, and in the ConPWS project, the focus is on using context during Web-services personalization. In both projects, various concepts are used such as software agents, conversations, and policies. For instance, software agents engage in conversations with their peers to agree on the Web services that participate in a composition. Agents’ engagements are regulated using policies.

Mechanisms for Automatic Web Service Composition

2010 ◽  
pp. 175-186
Author(s):  
Quan Yuan ◽  
Mihai Fonoage ◽  
Ionut Cardei
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Web Service Composition ◽  
Web Services Composition ◽  
Services Composition ◽  
Composition Methods ◽  
Efficient Integration ◽  
The Web

This chapter introduces the web services composition as a means of studying efficient integration of the existing web services to satisfy users’ requirements. It discusses the web services composition definition, combined with the current web services composition methods, and divides those methods into two categories: AI-based methods and Non-AI methods. Also, the authors present the features and the comparison of these two categories, to assist researchers in the understanding of web service composition in a variety of contexts.

scholarly journals Analysis and Verification of Time Requirements Applied to the Web Services Composition

2006 ◽  
pp. 178-192 ◽  
Author(s):  
Gregorio Díaz ◽  
María-Emilia Cambronero ◽  
M. Llanos Tobarra ◽  
Valentín Valero ◽  
Fernando Cuartero
Keyword(s):  
Web Services ◽  
Web Services Composition ◽  
Services Composition ◽  
Time Requirements ◽  
The Web

Semantic Web Services Composition with Case Based Reasoning

2011 ◽  
pp. 36-63
Author(s):  
Dhavalkumar Thakker ◽  
Taha Osman ◽  
David Al-Dabass
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Constraint Satisfaction Problem ◽  
Service Development ◽  
Case Based Reasoning ◽  
Web Services Composition ◽  
Services Composition ◽  
Knowledge Based ◽  
Case Based

Web service development is encouraging scenarios where individual or integrated application services can be seamlessly and securely published on the Web without the need to expose their implementation details. However, as Web services proliferate, it becomes difficult to matchmake and integrate them in response to users requests. The goal of our research is to investigate the utilization of the Semantic Web in building a developer-transparent framework facilitating the automatic discovery and composition of Web services. In this chapter, we present a Semantic Case Based Reasoner (SCBR) framework that utilizes the case based reasoning methodology for modelling dynamic Web service discovery and composition. Our approach is original as it considers the runtime behaviour of a service resulting from its execution. Moreover, we demonstrate that the accuracy of automatic matchmaking of Web services can be further improved by taking into account the adequacy of past matchmaking experiences for the requested task. To facilitate Web services composition, we extend our fundamental discovery and matchmaking algorithm using a light-weight knowledge-based substitution approach to adapt the candidate service experiences to the requested solution before suggesting more complex and computationally taxing AI-based planning-based transformations. The inconsistency problem that occurs while adapting existing service composition solutions is addressed with a novel methodology based on the Constraint Satisfaction Problem (CSP).

Social Networks and Web Services-Based Systems

2010 ◽  
pp. 902-907
Author(s):  
Zakaria Maamar ◽  
Leandro Krug Wives
Keyword(s):  
Social Networks ◽  
Web Services ◽  
Web Service ◽  
Web Services Composition ◽  
Services Composition ◽  
Business Applications ◽  
Composite Web Service ◽  
Different Types ◽  
New Type ◽  
Over Time

Web services are paving the way for a new type of business applications. This can be noticed from the large number of standards and initiatives related to Web services (Margaria, 2007; Papazoglou et al., 2007; Yu et al., 2008), which tackle a variety of issues such as security, fault tolerance, and substitution. These issues hinder the automatic composition of Web services. Composition handles the situation of a user’s request that cannot be satisfied by any single, available Web service, whereas a composite Web service obtained by combining available Web services may be used. Despite the tremendous capabilities that empower Web services, they still lack some capabilities that would propel them to a higher level of adoption by the IT community and make them compete with other integration middleware like CORBA and .Net. As a result, Web services adoption could be slowed down if some issues such as the complexity of their discovery are not properly addressed (Langdom, 2003). For this particular issue of discovery, we examine in this chapter the use of social networks (Ethier, visited in 2008; Wasserman and Glaskiewics, 1994). Such networks permit to establish between people relationships of different types like friendship, kinship, and conflict. These relationships are dynamic and, hence, adjusted over time depending on different factors like outcomes of previous interaction experiences, and natures of partners dealt with. Replacing people with Web services is doable since Web services constantly engage in different types of interaction sessions with users and peers as well

Semantic Web Service Composition Standards and their Applications

2014 ◽  
Vol 513-517 ◽  
pp. 1376-1381
Author(s):  
Mutaz Beraka ◽  
Hassan Mathkour ◽  
Sofien Gannouni
Keyword(s):  
Web Services ◽  
Semantic Web ◽  
Web Service ◽  
Service Composition ◽  
Web Service Composition ◽  
Web Services Composition ◽  
Semantic Web Service ◽  
Services Composition ◽  
Service Modeling ◽  
Semantic Web Service Composition

Web services allow developers to create, generate and compose them at runtime. However, a single web service is not sufficient to achieve most of user demands in its own. This gives rise to the concept of web services composition of is an appropriate solution to maximize the benefits of web services. Web services composition has received a great attention from different communities. A number of different semantic standards/specifications have been proposed to tackle this issue. These standards are Ontology Web Language and Web Service Modeling Ontology. In this paper, we provide an overview of these standards and present a comparison between them. We also overview different applications that have developed based on each of these standards and present comparisons among them.

scholarly journals Towards a Personalized Web Services Composition Approach

2021 ◽  
Author(s):  
Sarra Abidi ◽  
Fathia Bettaher ◽  
Myriam Fakhri
Keyword(s):  
Web Services ◽  
Service Composition ◽  
User Profile ◽  
Web Services Composition ◽  
User Interactions ◽  
Complex Needs ◽  
Services Composition ◽  
User Demand ◽  
Dynamic Services ◽  
The Web

Generally available Web Services (WS) can not meet the complex needs of users and their adaptation to the environment remains a major problem for the design of information systems. The web services composition comes to address the satisfaction of new and complex needs such as the process we find in most organizations. Its purpose is to perform several services to meet user demand. The satisfaction of a user needs a dynamic and reusable environment to meet those needs. In this context, the user interactions are essential. From there, in this work, we define two objectives: i) propose a service composition approach that allows dynamic services composition and its purpose is to meet a need. ii) Propose a personalization approach for Web services composition which allows the reuse of services while adopting for the context of each user. Our approach is based on the use of ontologies and user profile.

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