Toward better weighting of anchors

Authors:
David Hawking;Trystan Upstill;Nick Craswell
Affiliations:
CSIRO ICT Centre, Canberra, Australia;ANU, Canberra, Australia;CSIRO ICT Centre, Canberra, Australia
Venue:
Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval
Year:
2004

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Abstract

Okapi BM25 scoring of anchor text surrogate documents has been shown to facilitate effective ranking in navigational search tasks over web data. We hypothesize that even better ranking can be achieved in certain important cases, particularly when anchor scores must be fused with content scores, by avoiding length normalisation and by reducing the attentuation of scores associated with high tf. Preliminary results are presented.