Web browsing involves two tasks: finding the right web page and then making sense of its content. So far, research has focused on supporting the task of finding web resources through 'standard' information retrieval mechanisms, or semantics-enhanced search. Much less attention has been paid to the second problem. In this paper we describe Magpie, a tool which supports the interpretation of web pages. Magpie offers complementary knowledge sources, which a reader can call upon to quickly gain access to any background knowledge relevant to a web resource. Magpie automatically associates an ontologybased semantic layer to web resources, allowing relevant services to be invoked within a standard web browser. Hence, Magpie may be seen as a step towards a semantic web browser. The functionality of Magpie is illustrated using examples of how it has been integrated with our lab's web resources.

Browsing the web involves two main tasks: finding the right web page and then making sense of its content. A significant amount of research has gone into supporting the task of finding web resources through ‘standard ’ information retrieval mechanisms, or semantics-enhanced search. Much less attention has been paid to the second problem. In this paper we describe Magpie, a tool which supports the interpretation of web pages. Magpie acts as a complementary knowledge source, which a reader can call upon to quickly gain access to any background knowledge relevant to a web resource. Magpie works by automatically associating an ontology based semantic layer to web resources, allowing relevant services to be directly invoked within a standard web browser. The functionality of Magpie is illustrated using examples of how it has been integrated with our lab’s web resources. Categories and Subject Descriptors

When working with computer programs, either in an educational or industrial context, there is often a need to describe a program and its behaviour either to a tutor, student or colleague. Software Visualization (SV) uses techniques such as graphics and animation for describing a program or its algorithm. Software Visualizations are tied to a particular place (the machine on which it runs) and time (when the person willing to demonstrate and the person wishing to view are available), restricting their usefulness. Our solution to the above problem, the Internet Software Visualization Lab (ISVL), allows demonstrations to be staged over the web, providing a rich synchronous and asynchronous communication medium. We are currently testing a system created in ISVL on a Master's Programming course. 1: Introduction Software Visualization (SV) systems have been used to aid in computer science teaching and locating program bugs with varying degrees of success over a number of years (see [13]). S...

CASRE (Computer-Aided Software Reliability Estimation) is a software tool for software reliability measurement and evaluation. With systematic and comprehensive modeling schemes shrink-wrapped with a user-friendly interface, CASRE has drawn a significant attention as a project management tool for automatic software reliability measurement. CASRE was originally designed as a stand-alone tool running on Windows. Due to the popularity of the World Wide Web, many users demand that software tools be brought up and made available in the Web. There are challenging problems we have to solve to meet this demand. This paper discusses the architectural issues and technical decisions involved in porting a stand-alone tool so that it can run on the Web interactively. We examine the general architectures required for Web-based tools, and present our experience in bringing CASRE into the presence of the Web. The resulting software, called Web-CASRE, takes advantage of the Tcl/Tk Web browser plugin to...

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A factor limiting the take up of Web services is that all tasks associated with the creation of an application, for example, finding, composing, and resolving mismatches between Web services have to be carried out by a software developer. Semantic Web services is a combination of semantic Web and Web service technologies that promise to alleviate these problems. In this paper we describe IRS-III, a framework for creating and executing semantic Web services, which takes a semantic broker based approach to mediating between service requesters and service providers. We describe the overall approach and the components of IRS-III from an ontological and architectural viewpoint. We then illustrate our approach through an application in the eGovernment domain.

and other research outputs

and other research outputs