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Web services composition has been an active area of Service-oriented computing research. Where in literature the subjects around the functional composition of web service has gained increasing attention, some other efforts have been deployed to integrate the Non-functional requirements to be taken in consideration by the web service composition. However, integrating different Non-functional requirements...
Internet of Things (IoT) has been identified as one of the emerging technologies in IT. It interconnects and integrates large numbers of digital and physical entities by capability of appropriate information and communication technologies, to enable building enormous useful and unimaginable services and applications. However building new IoT services or applications is a fastidious task since it is...
Due to new computing trends such as ubiquitous computing, the complexity of software design is leading to increased effort for development, maintenance and configuration. One promising way to address these issues is self-adaptation. Self-adaptive systems are capable of changing their own behaviour to adapt dynamically to context changes at runtime. Among the recent development approaches available...
In Web service composition process, non-functional requirements integration with functional requirements remains open despite the proposed approaches in the literature. The contribution we propose in this paper deals with security requirements. It consists on modeling some security requirements using FSM (Finite State Machine) and their integration dynamically with expressed functional requirements...
Web services composition has been an active area of Service-oriented computing research. Although it has been profoundly investigated, security and privacy issues have not been more explored. The contribution of this paper deals with these issues by proposing an approach to provide privacy-aware and secure web service composition at runtime. The formalization of both functional and security requirements...
Organizations in a collaborative environment expose their services to an external usage which requires more preoccupation with security issues. Access control is one of these required security concerns. Several access control models are defined in the literature and this multitude of models creates heterogeneity of access control systems between the collaborating organizations. And this is manifested...
In Web Service research, providing methods and tools for automatic composition of services based on functional requirements has gained a lot of attention. However less effort have focused on integrating Non-Functional requirement in web service composition process. Some solutions have been proposed to deal with this challenge. Despite the proposed approaches this issue remains open. In this paper...
With a growing number of web services, discovering services that can match with a user's query becomes a challenging task. It's very tedious for a service consumer to select the appropriate one according to her/his needs. In this paper, we propose a non-logic-based matchmaking approach that uses the Correlated Topic Model (CTM) to extract topic from semantic service descriptions and model the correlation...
Web service discovery is a main challenge despite the enhanced proposed methods based on information retrieval techniques (word sense disambiguation, stemming, etc.), domain knowledge and ontology. Unfortunately, the proposed approaches are, however, complex in practice. Despite the addition of extra information to WSDL documents, discovering a required web service looks like finding a needle in a...
This paper analyses the well known web servicesrepresentations based on web services descriptions and moregenerally on the content of WSDL files to evaluate theirinterest for discovery, clustering and recommendation tasks.Unfortunately, this analysis shows that these representationsare very basic and do not lead to good results. Therefore,we introduce a new representation called symbolic reputationwhich...
The current ever-growing advances in wireless networking and the great success of mobile computing have contributed to the development of an increasing amount of mobile services. Due to this growth of published services, quality of service (QoS) is becoming a key feature to provide the most appropriate needed service to mobile clients according to their requirements. However, managing QoS represents...
Web services have received much interest due to their potential to design and build complex interenterprise business applications. A particular interest concerns dynamic web services composition that offers the opportunity for creating new web services at runtime from those already published in uddi registry. However, this composition requires necessarily quantifying criteria for web service selection...
The field of information extraction from the Web emerged with the growth of the Web and the multiplication of online dara sources. This paper is an analysis of information extraction methods. It presents a service oriented approach for web information extraction considering both web data management and extraction services. Then we propose an SOA bused architecture to enhance flexibility and on-the-fly...
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