Modeling the user's conceptual knowledge in BGP‐MS, a user modeling shell system1

Kobsa, Alfred

doi:10.1111/j.1467-8640.1990.tb00295.x

Cited by 53 publications

(26 citation statements)

References 22 publications

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“…The focus was set to abstract the concept of user modelling and to introduce reusability for future applications and projects. It was not until the early 1990s before these new tools were coined as 'User Modelling Shell Systems' [Kobsa, 1990]. Examples of such tools are UM [Kay, 1995], DOPPELGÄNGER [Orwant, 1995] and BGP-MP [Kobsa and Pohl, 1995] to mention a few.…”

Section: User and Context Models 17mentioning

confidence: 99%

Event and map content personalisation in a mobile and context-aware-environment

Bierig

2010

SIGIR Forum

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Effective methods for information access are of the greatest importance for our modern lives -- particularly with respect to handheld devices. Personalisation is one such method which models a user's characteristics to deliver content more focused to the user's needs. The emerging area of sophisticated mobile computing devices has started to inspire new forms of personalised systems that include aspects of the person's contextual environment. This thesis seeks to understand the role of personalisation and context, to evaluate the effectiveness of context for content personalisation and to investigate the event and map content domain for mobile usage. The work presented in this thesis has three parts. The first part is a user experiment on context that investigated the contextual attributes of time, location and interest, with respect to participants' perception of their usefulness. Results show highly dynamic and interconnected effects of context on participants' usefulness ratings. In the second part , these results were applied to create a predictive model of context that was related to attribution theory and then combined with an information retrieval score to create a weighted personalisation model. In the third part of this work, the personalisation model was applied in a mobile experiment. Participants solved situational search tasks using a (i) non-personalized and a (ii) personalized mobile information system, and rating entertainment events based on usefulness. Results showed that the personalised system delivered about 20% more useful content to the mobile user than the non-personalised system, with some indication for reduced search effort in terms of time and the amount of queries per task. The work presented provides evidence for the promising potential of context to facilitate personalised information delivery to users of mobile devices. Overall, it serves as an example of an investigation into the effectiveness of context from multiple angles and provides a potential link to some of the aspects of psychology as a potential source for a deeper understanding of contextual processes in humans.

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Section: User and Context Models 17mentioning

confidence: 99%

Event and map content personalisation in a mobile and context-aware-environment

Bierig

2010

SIGIR Forum

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“…Daphne's method of modelling beliefs are those of Kobsa (1990) and Taylor et al (1995). However, the classi"cation of belief nestings in these approaches do not account for behaviour which is not completely honest.…”

Section: Belief Representationmentioning

confidence: 99%

“…This is the simplest communicative situation, and it has been argued (Kobsa, 1990;Taylor, Carletta & Mellish, 1995) that only three levels of nesting are su$cient to represent it.…”

Section: Daphne As a Partially Cooperative Agentmentioning

confidence: 99%

“…Following the approach of Kobsa (1990) and Taylor et al (1995), we de"ned a "xed number of basic belief sets. Given that the #outing of the cooperative principle is done only in a restricted sense, we maintain that three levels are still su$cient, as each agent will need to represent only one well-de"ned type of lie.…”

Section: Daphne As a Partially Cooperative Agentmentioning

confidence: 99%

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Dialectical argumentation to solve conflicts in advice giving: a case study in the promotion of healthy nutrition

Grasso¹,

Cawsey²,

Jones³

2000

International Journal of Human-Computer Studies

100

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“…BGP-MS (Kobsa 1990;Kobsa and Pohl 1995;Pohl 1998) allowed assumptions about the user and stereotypical assumptions about user groups to be represented in a first-order predicate logic. A subset of these assumptions could be stored in a terminological logic.…”

Section: Traditional Data Repositories Of Generic User Modeling Systementioning

confidence: 99%

An LDAP-based User Modeling Server and its Evaluation

Kobsa

Fink

2006

User Model User-Adap Inter

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Representation components of user modeling servers have been traditionally based on simple file structures and database systems. We propose directory systems as an alternative, which offer numerous advantages over the more traditional approaches: international vendor-independent standardization, demonstrated performance and scalability, dynamic and transparent management of distributed information, built-in replication and synchronization, a rich number of pre-defined types of user information, and extensibility of the core representation language for new information types and for data types with associated semantics. Directories also allow for the virtual centralization of distributed user models and their selective centralized replication if better performance is needed. We present UMS, a user modeling server that is based on the Lightweight Directory Access Protocol (LDAP). UMS allows for the representation of different models (such as user and usage profiles, and system and service models), and for the attachment of arbitrary components that perform user modeling tasks upon these models. External clients such as user-adaptive applications can submit and retrieve information about users. We describe a simulation experiment to test the runtime performance of this server, and present a theory of how the parameters of such an experiment can be derived from empirical web usage research. The results show that the performance of UMS meets the requirements of current small and medium websites already on very modest hardware platforms, and those of very large websites in an entry-level business server configuration.

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Modeling the user's conceptual knowledge in BGP‐MS, a user modeling shell system1

Cited by 53 publications

References 22 publications

Event and map content personalisation in a mobile and context-aware-environment

Event and map content personalisation in a mobile and context-aware-environment

Dialectical argumentation to solve conflicts in advice giving: a case study in the promotion of healthy nutrition

An LDAP-based User Modeling Server and its Evaluation

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