Implicit relevance feedback for context-aware information retrieval in UbiLearning environments

Authors:
Diogo S. Martins;Mauro Biajiz;Antonio F. do Prado;Wanderley L. de Souza
Affiliations:
Universidade Federal de São Carlos, São Carlos -- SP -- Brazil;Universidade Federal de São Carlos, São Carlos -- SP -- Brazil;Universidade Federal de São Carlos, São Carlos -- SP -- Brazil;Universidade Federal de São Carlos, São Carlos -- SP -- Brazil
Venue:
Proceedings of the 2009 ACM symposium on Applied Computing
Year:
2009

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Abstract

Ubiquitous Learning (UbiLearning) environments heavily employ mobile devices to empower users with mobility and tooling support to learn anytime, anywhere. Introducing mobile devices in educational settings imposes constraints on search behavior due to limited resources on these devices such as small screens and restricted input functionalities. Targeting this scenario, this paper proposes an architecture for implicit relevance feedback which considers users' work context to expand search queries in order to satisfy information needs with greater precision. Evaluation results conducted over a local test collection enriched with contextual features reveal improvements on average precision when compared to a pseudo relevance feedback baseline.