Chapter

Active Media Technology

Volume 6335 of the series Lecture Notes in Computer Science pp 395-402

Modeling User Knowledge from Queries: Introducing a Metric for Knowledge

  • Frans van der SluisAffiliated withDepartment of Human Media Interaction, University of Twente
  • , Egon L. van den BroekAffiliated withDepartment of Human Media Interaction, University of Twente

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Abstract

The user’s knowledge plays a pivotal role in the usability and experience of any information system. Based on a semantic network and query logs, this paper introduces a metric for users’ knowledge on a topic. The finding that people often return to several sets of closely related, well-known, topics, leading to certain concentrated, highly activated areas in the semantic network, forms the core of this metric. Tests were performed determining the knowledgeableness of 32,866 users on in total 8 topics, using a data set of more than 6 million queries. The tests indicate the feasibility and robustness of such a user-centered indicator.