other,11-1-E99-1034,ak co-occurrence similarities </term> between <term> terms </term> for separating <term> query terms </term>
tech,20-1-E99-1034,ak query terms </term> that are useful for <term> retrieval </term> from those that are harmful . The
measure(ment),3-3-E99-1034,ak </term> . Preliminary experiments with <term> similarities </term> computed using <term> first-order and
other,6-3-E99-1034,ak <term> similarities </term> computed using <term> first-order and second-order co-occurrence </term> seem to confirm the hypothesis . <term>
other,9-4-E99-1034,ak then be used for determining which <term> query terms </term> are useful and best reflect the <term>
other,17-4-E99-1034,ak </term> are useful and best reflect the <term> user 's information need </term> . A possible application would be
measure(ment),14-5-E99-1034,ak source of evidence for tuning the <term> weights </term> of the <term> query terms </term> . We
hide detail