Collaborative annotation for pseudo relevance feedback
Christina Lioma, Marie‐Francine Moens, Leif A. Azzopardi · Lirias · 2008
Abstract. We present a pseudo relevance feedback technique for infor-mation retrieval, which expands keyword queries with semantic annota-tion found in the freely available Del.icio.us collaborative tagging system. We hypothesise that collaborative tags represent semantic information that may render queries more informative, and hence enhance retrieval performance. Experiments with three different techniques of enriching queries with Del.icio.us tags, and also varying the number of tags used for expansion between 1-10, show small improvement in retrieval preci-