Patents by Inventor Hans Friedrich Witschel

Hans Friedrich Witschel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for Admission-controlled Caching
    Publication number: 20090094200
    Abstract: A method of caching the results of a search engine query divides a search engine cache into two parts, controlled and uncontrolled, and determines, through an admission policy, to which part the query results should be cached. In one implementation, the admission policy estimates whether a query is likely to be frequent or infrequent in the future by analyzing various features of the query.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 9, 2009
    Applicant: YAHOO! INC.
    Inventors: Ricardo Baeza-Yates, Flavio Junqueira, Vassilis Plachouras, Hans Friedrich Witschel