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Query routing is a process of directing user queries to appropriate servers by constraining the search space through query refinement and source selection. The goal of a query routing middleware is to reduce both false positives (useless answers delivered that fail to fulfill user's needs) and false negatives (useful answers that the system fails to deliver to the user) in answering a query. Effective query rout ing not only minimizes the query response time and the overall processing cost, but also eliminates a lot of unnecessary communication overhead over the global networks and over the individual information sources.

Query Router Software



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Last updated: April 06, 2000.