2. The method of claim 1 , further comprising: receiving a query comprising at least one phrase; retrieving a plurality of documents responsive to the query to form the set of documents as a search result set including the first document and the second document; and discarding at least one of the first document or the second document from the search result set based on the identification of the first and second documents as duplicate documents.
3. The method of claim 2 , wherein the document discarded has a lower document significance measure than the other document.