论文成果 / Publications
2010
Enhancing browsing experience of table and image elements in web pages
Abstract
As the popularity and diversification of both Internet and its access devices, users' browsing experience of web pages is in great need of improvement. Traditional browsing mode of web elements such as table and image is passive, which limits users' browsing efficiency of web pages. In this paper, we propose to enhance browsing experience of table and image elements in web pages by enabling real-time interactive access to web tables and images. We design new browsing modes that help users improve their browsing efficiency including operation mode, record mode for web tables and normal mode, starred mode, advanced mode for web images. We design and implement a plug-in for Microsoft Internet Explorer, called iWebWidget, which provides a customized user interface supporting real-time interactive access to web tables and images. Besides, we carry out a user study to testify the usefulness of iWebWidget. Experimental results show that users are satisfied and really enjoy the new browsing modes for both web tables and images.
A Policy-Driven Service Composition Method for Adaptation in Pervasive Computing Environment
Abstract
Service composition allows distributed application, such as multimedia application, to be composed from atomic service units and to adapt dynamically to users' requirements and environment conditions in pervasive computing system. It augments the adaptation action space for the application of pervasive computing. According to the multidimensional QoS (Quality of Service) requirement of pervasive computing system, we proposed a comprehensive service composition method to enhance the capability of application adaptation. First, according to a hierarchy policy model and a policy specification language, strengthened by event calculus, service discovery policy action integrating the situation of user, application, environment and resource can be triggered. Secondly, the proposed physical space model can support the location-aware service discovery and explicit range query to improve the efficiency of the query. To the end, an adaptation policy evaluation model is utilized to maximize an evaluation criterion–quality of satisfaction of users and environment by optimizing the optional service selection and the composition path. Through experiment and discussion of the algorithm, the paper further illustrates the great potential advantage of the solution to service composition.