Note on "An Optimal Evaluation of Boolean Expressions in an Online Query System." CACM October, 1979 Gudes, E. Hoffman, A. Query, Boolean expression, optimal evaluation, information retrieval 3.50 3.70 3.74 CA791002 DB January 16, 1980 4:52 PM 3168 4 3169 3169 4 3169 2965 5 3169 3169 5 3169 3169 5 3169 3169 5 3169