Web Query Optimizer V. Zadorozhny, L. Bright, L. Raschid, T. Urhan, and M. Vidal   View Paper (PDF)   Return to Demo Session 1 Abstract We demonstrate a Web Query Optimizer (WQO) within an architecture of mediators and wrappers, for WebSources of limited capability in a wide area environment. The WQO has several innovative features including a CBR (capability based rewriting) Tool, an enhanced randomized relational optimizer extended to a Web environment, and a WebWrapper cost model that can provide relevant metrics for accessing WebSources. The prototype has been tested against a number of WebSources. DiSC'01 Copyright ©2002 ACM Inc.