A theoretical framework for defining similarity measures for boolean search request formulations, including some experimental results.

Tadeusz Radecki A theoretical framework for defining similarity measures for boolean search request formulations, including some experimental results. 501-524 1985 21 Inf. Process. Manage. 6 http://dx.doi.org/10.1016/0306-4573(85)90004-4 db/journals/ipm/ipm21.html#Radecki85