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Xu, Y.: ¬The dynamics of interactive information retrieval behavior : part I: an activity theory perspective (2007)
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- Date
- 27. 5.2007 13:55:22
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Xu, Y.: Relevance judgment in epistemic and hedonic information searches (2007)
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- Abstract
- Research in information science now regards users' relevance judgment as subjective perception. However, user-centered studies in the extant literature mainly focus on relevance judgment in problem solving contexts in which the situational relevance of a document is the main concern for users. This study investigates users' relevance judgment in non-problem-solving contexts, i.e., when users search information for epistemic value or entertainment. It is posited that informative relevance and affective relevance should be the main concerns for users. Based on H. P. Grice's (1975, 1989) communication theory and Y. Xu and Z. Chen's (2006) framework, this study tests the significance of topicality, novelty, reliability, understandability, and scope to informative relevance and affective relevance in nonproblem-solving contexts. This empirical study finds novelty, reliability, and topicality to be key aspects of informative relevance.
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Xu, Y.; Liu, C.: ¬The dynamics of interactive information retrieval : part II: an empirical study from the activity theory perspective (2007)
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- Abstract
- Human information-seeking behavior is complicated. Activity theory is a powerful theoretical instrument to untangle the "complications." Based on activity theory, a comprehensive framework is proposed in Part I (Y. Xu, 2007) of this report to describe interactive information retrieval (IIR) behavior. A set of propositions is also proposed to describe the mechanisms governing users' cognitive activity and the interaction between users' cognitive states and manifested retrieval behavior. An empirical study is carried out to verify the propositions. The authors' experimental simulation of 81 participants in one search session indicates the propositions are largely supported. Their findings indicate IIR behavior is planned. Users adopt a divide-and-conquer strategy in information retrieval. The planning of information retrieval activity is also partially manifested in query revision tactics. Users learn from previously read documents. A user's interaction with a system ultimately changes the user's information need and the resulting relevance judgment, but the dynamics of topicality perception and novelty perception occur at different paces.
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Xu, Y.; Li, G.; Mou, L.; Lu, Y.: Learning non-taxonomic relations on demand for ontology extension (2014)
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Xu, Y.; Ryan, K.: Changing lanes on the information superhighway : academic libraries and the Internet (1995)
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Xu, Y.; Wang, D.: Order effect in relevance judgment : mediation and causality (2008)
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Xu, Y.; Bernard, A.: Knowledge organization through statistical computation : a new approach (2009)
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Xu, Y.; Yin, H.: Novelty and topicality in interactive information retrieval (2008)
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