The user modeling shell system BGP-MS

Kobsa, Alfred; Pohl, Wolfgang

doi:10.1007/bf01099428

Cited by 112 publications

(50 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The approaches aiming at a dynamic representation of the user's goals, beliefs, and interests employ rule-based systems (Brajnik et al, 1990), logic-based representations (Kok, 1989;Kobsa & Pohl, 1994b), connectionist schemes (Belew, 1986), or relevance networks (Kaplan et al, 1993;Mathé & Chen, 1996). As already mentioned, our user model's representation is a combination of stereotype (ensuring the appropriate context of information access) and an overlay model (ensuring the adaptation to the user's level of experience).…”

Section: Comparison With Other Workmentioning

confidence: 99%

A task-centered approach for user modeling in a hypermedia office documentation system

Vassileva

1996

User Model User-Adap Inter

View full text Add to dashboard Cite

The development of user-adaptive systems is of increasing importance for industrial applications. User modeling emerged from the need to represent in the system knowledge about the user in order to allow informed decisions on how to adapt to match the user's needs. Most of the research in this field, however, has been theoretical, "top-down." Our approach, in contrast, was driven by the needs of the application and shows features of bottom-up, user-centered design.We have implemented a user modeling component supporting a task-based interface to a hypermedia information system for hospitals and tested it under realistic conditions. A new architecture for user modeling has been developed which focuses on the tasks performed by users. It allows adaptive browsing support for users with different level of experience, and a level of adaptability. The requirements analysis shows that the differences in the information needs of users with different levels of experience are not only quantitative, but qualitative. Experienced users are not only able to cope with a wider browsing space, but sometimes prefer to organize their search in a different way. That is why the user model and the interface of the system are designed to support a smooth transition in the access options provided to novice users and to expert users. Keywords:adaptation, adaptive interfaces, hypermedia and hypertext navigation, intelligent information retrieval, office / hospital documentation systems, task-based context for information retrieval, task-structures. Modeling and User Adapted Interaction, vol. 6, Nos. 2-3, 1996 . 2 Published in User IntroductionBrowsing is a useful technique for retrieving documents from data-bases (Thompson & Croft, 1989).It has been widely applied recently as hypertext and hypermedia systems have become increasingly popular (Begoray, 1990). The main cognitive advantage of this technique is that users in general are better able to recognize the information they want than to characterize it in advance. The disadvantages of browsing are that it is easy to get lost in a complex network of nodes representing documents and concepts and that there is no guarantee that browsing will be as effective as a more conventional search. If it offers a rich set of links, the system is responsible for helping the users understand what the links mean, how they might be used, and how to find their way in the network. Without this kind of help, browsing can take on the aspect of the user finding her way in a maze, where she can become hopelessly "lost in (hyper)space" (Conklin, 1987). User modeling can help in supporting the user's navigation and information retrieval. A user model is an explicitly represented collection of data about the user which allows the system to adapt its options to the needs of the user. The intensive development in the field of user modeling during the last decade (Kobsa & Pohl, 1994a) makes it possible to consider it as a practical approach for ensuring user-adapted information access in a hypermedia in...

show abstract

Section: Comparison With Other Workmentioning

confidence: 99%

A task-centered approach for user modeling in a hypermedia office documentation system

Vassileva

1996

User Model User-Adap Inter

View full text Add to dashboard Cite

show abstract

“…Users also have different goals when accessing an information system. In some cases they know which concepts to access to achieve their goals and do not need any navigational support (Boyle & Encarnacion, 1994;Kobsa, Müller & Nill, 1994). However, when the goal can not be directly mapped to the structure of the hyperspace or when the hyperspace is large, users need help in navigation and in finding relevant pieces of information.…”

Section: Educational Hypermedia Systemsmentioning

confidence: 99%

“…However, at present all work on adaptive presentation in hypermedia are really the works on adaptive text presentation. Some existing adaptive hypermedia systems do contain non-textual items de Rosis et al, 1993;Kobsa et al, 1994), but can not present these items adaptively. At the same time, there are a number of good techniques for adaptive multimedia presentation (Maybury, 1993;André & Rist, 1996) but these techniques have never been used in full-fledged hypermedia systems.…”

Section: Adaptive Presentationmentioning

confidence: 99%

Methods and Techniques of Adaptive Hypermedia

Brusilovsky¹

1998

Adaptive Hypertext and Hypermedia

430

568

View full text Add to dashboard Cite

Adaptive hypermedia is a new direction of research within the area of adaptive and user model-based interfaces. Adaptive hypermedia (AH) systems build a model of the individual user and apply it for adaptation to that user, for example, to adapt the content of a hypermedia page to the user's knowledge and goals, or to suggest the most relevant links to follow. AH systems are used now in several application areas where the hyperspace is reasonably large and where a hypermedia application is expected to be used by individuals with different goals, knowledge and backgrounds. This paper is a review of existing work on adaptive hypermedia. The paper is centered around a set of identified methods and techniques of AH. It introduces several dimensions of classification of AH systems, methods and techniques and describes the most important of them.

show abstract

“…After the ¢ring of all applicable inference rules and the activation of all applicable stereotypes, contradictions between assumptions are sought and various resolution strategies applied (`truth maintenance'). (Kobsa and Pohl, 1995;Pohl, 1998) allows assumptions about the user and stereotypical assumptions about user groups to be represented in a ¢rst-order predicate logic. A subset of these assumptions is stored in a terminological logic.…”

Section: Example Systemsmentioning

confidence: 99%

Generic User Modeling Systems

Kobsa

2007

Lecture Notes in Computer Science

Self Cite

222

213

View full text Add to dashboard Cite

Abstract. The paper reviews the development of generic user modeling systems over the past twenty years. It describes their purposes, their services within user-adaptive systems, and the different design requirements for research prototypes and commercially deployed servers. It discusses the architectures that have been explored so far, namely shell systems that form part of the application, central server systems that communicate with several applications, and possible future user modeling agents that physically follow the user. Several implemented research prototypes and commercial systems are brie£y described.

show abstract

The user modeling shell system BGP-MS

Cited by 112 publications

References 27 publications

A task-centered approach for user modeling in a hypermedia office documentation system

A task-centered approach for user modeling in a hypermedia office documentation system

Methods and Techniques of Adaptive Hypermedia

Generic User Modeling Systems

Contact Info

Product

Resources

About