Biometric response as a source of query independent scoring in lifelog retrieval

Authors:
Liadh Kelly;Gareth J. F. Jones
Affiliations:
Centre for Digital Video Processing, Dublin City University, Dublin 9, Ireland;Centre for Digital Video Processing, Dublin City University, Dublin 9, Ireland
Venue:
ECIR'2010 Proceedings of the 32nd European conference on Advances in Information Retrieval
Year:
2010

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Abstract

Personal lifelog archives contain digital records captured from an individual’s daily life, e.g. emails, web pages downloaded and SMSs sent or received. While capturing this information is becoming increasingly easy, subsequently locating relevant items in response to user queries from within these archives is a significant challenge. This paper presents a novel query independent static biometric scoring approach for re-ranking result lists retrieved from a lifelog using a BM25 model for content and content + context data. For this study we explored the utility of galvanic skin response (GSR) and skin temperature (ST) associated with past experience of items as a measure of potential future significance of items. Results obtained indicate that our static scoring techniques are useful in re-ranking retrieved result lists.