Istituto di Scienza e Tecnologie dell'Informazione     
Kritikos K., Plexousakis D., Paterṇ F. Task model-driven realization of interactive application functionality through services. In: ACM Transactions on Interactive Intelligent Systems, vol. 3 (4) article n. 25. ACM, 2014.
The Service-Oriented Computing (SOC) paradigm is currently being adopted by many developers, as it promises the construction of applications through reuse of existing Web Services (WSs). However, current SOC tools produce applications that interact with users in a limited way. This limitation is overcome by model-based Human-Computer Interaction (HCI) approaches that support the development of applications whose functionality is realized with WSs and whose User Interface (UI) is adapted to the user's context. Typically, such approaches do not consider various functional issues, such as the applications' semantics and their syntactic robustness in terms of the WSs selected to implement their functionality and the automation of the service discovery and selection processes. To this end, we propose a model-driven design method for interactive service-based applications that is able to consider the functional issues and their implications for the UI. This method is realized by a semiautomatic environment that can be integrated into current model-based HCI tools to complete the development of interactive service front-ends. The proposed method takes as input an HCI task model, which includes the user's view of the interactive system, and produces a concrete service model that describes how existing services can be combined to realize the application's functionality. To achieve its goal, our method first transforms system tasks into semantic service queries by mapping the task objects onto domain ontology concepts; then it sends each resulting query to a semantic service engine so as to discover the corresponding services. In the end, only one service from those associated with a system task is selected, through the execution of a novel service concretization algorithm that ensures message compatibility between the selected services.
URL: http://dl.acm.org/citation.cfm?id=2559979
DOI: 10.1145/2559979
Subject Design
Service front-ends
Service discovery
Interactive application design
D.2.2 Design Tools and Techniques. User interfaces
H.5.2 User Interfaces. User-centered design
H.3.5 Online Information Services. Web-based services

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