VLDB Endowment Inc. Very Large Data Base Endowment Inc.: a non-profit organisation for promoting and exchanging scholarly work in databases and related fields.
Paper by Min Fang, Narayanan Shivakumar, Hector Garcia-Molina, Rajeev Motwani, and Jeffrey D. Ullman, developing efficient execution strategies for a class of queries which perform an aggregate function over an attribute (or set of attributes) and then eliminates aggregate values that are below some specified threshold.