Document Type



he historical links of a web site include the URLs invalidated due to web site reorganization, document removal, renaming or relocation, or links to document snapshots, which are defined as the document’s contents as of a specific point in time. Tracking historical links will allow users to use out-of-date URLs, retrieve removed documents and document snapshots. This paper presents a logging and archiving scheme to track a document’s history of changes, and a Temporal URL scheme for users to submit a URL with temporal requirements. With the proposed schemes, a web site is able to track its historical links and provide better searching and information for its users.