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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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The accessibility dimension for structured document retrieval

Roelleke, Thomas and Lalmas, Mounia and Kazai, Gabriella and Ruthven, Ian and Quicker, Stefan (2002) The accessibility dimension for structured document retrieval. In: Advances in Information Retrieval. Lecture Notes in Computer Science, 2291 . Springer, Germany, pp. 284-302. ISBN 978-3-540-43343-9

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Abstract

Structured document retrieval aims at retrieving the document components that best satisfy a query, instead of merely retrieving pre-defined document units. This paper reports on an investigation of a tf-idf-acc approach, where tf and idf are the classical term frequency and inverse document frequency, and acc, a new parameter called accessibility, that captures the structure of documents. The tf-idf-acc approach is defined using a probabilistic relational algebra. To investigate the retrieval quality and estimate the acc values, we developed a method that automatically constructs diverse test collections of structured documents from a standard test collection, with which experiments were carried out. The analysis of the experiments provides estimates of the acc values.