Web server for multi-version web documents

摘要

A repository server that provides stored copies of Web-accessible documents A client of the repository server may register a document in the repository server. The repository server makes a copy of the registered document and returns a repository URL for the copy to the client. The repository URL may be used to fetch the copy from the repository URL. Registration further relates the stored copy to its document URL, to an identifier for the stored copy, to a fingerprint that is a condensed representation of the stored copy's content and can be used to determine degrees of similarity other than match-no match, and to a set of stored copies having similar content. The fingerprints are used to compute similarity. The similarity computation further employs comparisons of links in the documents and of document URLS to determine whether it is necessary to use the fingerprints to compute similarity.