@techreport{corston-oliver1999less, author = {Corston-Oliver, Simon and Dolan, Bill}, title = {Less Is More: Eliminating Index Terms For Subordinate Clauses}, year = {1999}, month = {July}, abstract = {We perform a linguistic analysis of documents during indexing for information retrieval. By eliminating index terms that occur only in subordinate clauses, index size is reduced by approximately 30% without adversely affecting precision or recall. These results hold for two corpora: a sample of the world wide web and an electronic encyclopedia.}, url = {http://approjects.co.za/?big=en-us/research/publication/less-is-more-eliminating-index-terms-for-subordinate-clauses/}, pages = {8}, number = {MSR-TR-99-51}, }