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Mobile devices with their various form factors have become the most convenient and pervasive computing platform, whether to carry out everyday business or to get online. Mobile users tend to adopt the fast food trend even in consuming online mobile services and functionalities. The Web service approach promises great flexibility in offering software functionality over the network, while maintaining...
Semantic web service discovery has attracted a lot of attention in the last decade. Research conducted in this area can be (mainly) summarized as follows: (1) "monolith" matchmaking algorithms (and systems), and (2) schema matching-based techniques. In this paper we describe a flexible approach that takes leverage of existing schema matchers, leading to a multiple choice strategy for semantic...
The emergence of Web services has changed the Internet a lot, and greatly facilitated the development of service based software systems. How to select appropriate services and compose them according to given context to satisfy a user's requirement is a big challenge. This paper proposes a novel Genetic Algorithm (GA) method to synthesis web services in a context-aware environment. We first present...
When designing scientific workflows, users often face the so-called shimming problem when connecting two related but incompatible components. The problem is addressed by inserting a special kind of adaptors, called shims, that perform appropriate data transformations to resolve data type inconsistencies. However, existing shimming techniques provide limited automation and burden users with having...
Personalization or privacy control? is a question one frequently asks himself/herself nowadays with the wide spread of service provision for users on the move. The right to protect intimacy or the right of privacy is a permanent and genuine right of any person. Context-awareness, offering to users services that react proactively to user environment and service conditions, although desirable, breaks...
Due to the popularity of smartphones, finding and recommending suitable services on mobile devices are increasingly important. Recent research has attempted to use role-based approaches to recommend mobile services to other members among the same group in a context dependent manner. However, the traditional role mining approaches originated from the domain of security control tend to be rigid and...
Verifying Web service composition in a dynamic environment remains one of the most difficult tasks despite the efforts and the previous proposed research works because new services can be composed during the execution step and others can automatically appear, disappear, or be updated. To achieve the Web service composition specification and verification, we introduce a new concept, called dynamic...
Web service compositions run in complex computing infrastructures where arising events may affect the quality of the system. However, crucial Web service compositions cannot be stopped to apply changes to deal with problematic events. Therefore, the trend is moving towards context-aware Web service compositions, which use context information as a basis for autonomic changes. Under the closed-world...
As we are moving towards the Internet of Things (IoT), the number of sensors deployed around the world is growing at a rapid pace. Market research has shown a significant growth of sensor deployments over the past decade and has predicted a substantial acceleration of the growth rate in the future. It is also evident that the increasing number of IoT middleware solutions are developed in both research...
Business Process Modelling (BPM) is a way to support business processes by using several techniques, methods, models, and systems to design, control and analyse business processes, where many resources are used: humans, technologies, organizations, applications etc. The current existing literature describes several BPM techniques; however, these techniques are often hard for IT people to understand...
The paper addresses the problem of maintaining the quality of service (QoS) of an orchestration of Web services (WS), which can be affected by exogenous events (i.e., faults). The main challenge in dealing with this problem is that typically the service where a failure is detected is not the one where a fault has occurred: faults have cascade effects on the whole orchestration of services. The paper...
Service-Oriented Computing (SOC) provides a flexible framework in which applications may be built up from services, often distributed across a network. One of the promises of SOC is that of Dynamic Binding where abstract consumer requests are bound to concrete service instances at runtime, thereby offering a high level of flexibility and adaptability. Existing research has so far focused mostly on...
WS-BPEL has been adopted as the predominant method for composing individual web services into higher-level business processes. The designers of WS-BPEL scenarios define at development time the specific web services that will be invoked in the context of the business process they model; in the context however of the current web, where each functionality is offered by multiple service providers, under...
This paper advocates a new paradigm, V-BPMI, for flexible web-based business processes modeling and implementation. This paradigm emphasizes both variability and composability, which are very important in large and evolving organizations. Through process modeling and process operationalization, it proposes to establish a real engineering phase of the process variability. It is based on concepts such...
In the constantly evolving smart building context, an important aspect to address is devices and applications interoperability. The FCINT project provides a service-oriented management framework for smart building facilities through the use of ontologies, intelligent controllers and a Web-based portal. The alarms system presented in this paper is part of the effort to provide a proper framework for...
Remote vehicle monitoring system keeps track of vehicle and also monitor the fleet level of the vehicle status. Here two problems are dealt with. First one is the anywhere any time monitoring of the vehicle status cannot be done through manual monitoring and the second one is the system behavior change according to user changes. The novelty of the proposed approach is twofold. First our proposal allows...
The Integration of distributed information systems, autonomous, heterogeneous and adaptable to the context represent the current needs of system information. Based on the advanced technology of SOA, Web services can evolve in a dynamic environment in a well-defined context and according to events automatically, such as time, temperature, location, authentication, etc. This is what we call self-adaptability...
For efficient execution of long-running autonomous transactions, the isolation property is commonly relaxed. Previous works on relaxing the isolation property of transactions proposed deriving the conflict relation between each pair of autonomous transactions. In this paper we show that the pair wise conflict relation is not sufficient in the general cases and propose a solution for implementing concurrency...
Web Services are commonly used for integrating applications between partners over the Internet. Since services with the same functionality are advertised with different Quality of Service (QoS) levels and are assessed with different Quality of Experience (QoE), choosing the right service may be quite challenging. It is essential for a user to predict QoS and QoE values as accurately as possible in...
Recently, data on the web has been increased by interactive service, social media and the pervasive computing technology. To utilize these huge data include sensor data, semantic sensor web service platform is needed. And it can provide the context-aware semantic web service. But, because sensor generated data is so dynamic, it can't always update and store. Therefore, we propose the distributed semantic...
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