Which concepts are general and speci c enough to support hypermedia retrieval? We present in this paper a graphical user interface that makes explicit the following three key concepts for hypermedia retrieval: content of documents, facts about documents and structure of documents. The underlying model is based on a probabilistic object-oriented logic (POOL) that enables content-based querying, ...

The tremendous growth in the number of Internet applications is driven by the use of rich media such as images, audio, and videos for representing and exchanging information. The result is the merging of hypertext and multimedia, or hypermedia. Hypermedia documents (eg. HTML files) function as containers for hypermedia objects, which are network transparent entities with a variety of media type...

Authoring of Adaptive Educational Hypermedia is a complex activity requiring the combination of a range of design and validation techniques. We demonstrate how Adaptive Educational Hypermedia can be transformed into CAVIAr courseware validation models allowing for its validation. The model-based representation and analysis of different concerns and model-based mappings and transformations are k...

In this paper, we discuss how externalising learners’ interaction behaviour may support learners’ explorations in an adaptive educational hypermedia environment that provides activity-oriented content. In particular, we collect raw data from learners’ interaction, model the state of interaction using a set of indicators and contextual information, and visualize this information alongside with c...

This paper discusses theory and research issues associated with the use of hypermedia technologies to support learning. It is proposed that viewing hypermedia technologies as an enabling infrastructure for tools to support learning—in particular learning in problem-oriented pedagogical environments involving cases—has particular promise. After considering research issues with problem-oriented l...

Hypermedia is an intensive integration of multimedia data and anchor links. The presence of multimedia data appends the temporal and spatial characteristics to the system and the anchors signify navigability in hypermedia applications. In this way the analysis and design methods for hypermedia applications would be involved with elaborating the presentation and navigation structures. In this pa...

The creation process of adaptive hypermedia is rarely evaluated. Moreover, conversion between different adaptive hypermedia systems has barely been proposed, yet alone tested in realistic settings. This paper presents the evaluation of the interoperability of two adaptive (educational) hypermedia systems, MOT and WHURLE, the one serving as authoring system, and the other as delivery system. The...

Navigation through large hypermedia information spaces is complex and is an important application area for adaptive hypermedia systems. User navigation can be best supported when the design of the hypermedia system is embedded in an evolutionary process model that takes into account the decentralization of data sources and the variety of users. The paper deals with distributed frameworks for op...

Provision of context to support the interpretation of information is an important issue for hypermedia. Information with no context loses e ectiveness in conveying its message to the user. Abstraction of information is an important mechanism for contextualisation of information. In hypermedia, abstraction can be used to assist users in locating information and understanding the relationships be...