Patents by Inventor Kou-Horng A. Yang

Kou-Horng A. Yang 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).

  • System and method for an adaptive list prefetch
    Patent number: 8185701
    Abstract: A method, system, and computer program product are provided for retrieving records into a main memory. A first number of gaps and a first total gap size are received for a list of records from a database subsystem. A determination is made of a first average gap size using the first number of gaps and the first total gap size. A determination is made as to whether the first average gap size is greater than a prestaging threshold value. Responsive to the first average gap size being equal to or less than the prestaging threshold value, a prestaging flag is set for the list of records. Then, the list of records is retrieved into the main memory using prestaging.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: May 22, 2012
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey A. Berger, You-Chin Fuh, Yue Huang, Hong Min, Terence P. Purcell, Kou-Horng A. Yang
  • System and Method for an Adaptive List Prefetch
    Publication number: 20090198738
    Abstract: A method, system, and computer program product are provided for retrieving records into a main memory. A first number of gaps and a first total gap size are received for a list of records from a database subsystem. A determination is made of a first average gap size using the first number of gaps and the first total gap size. A determination is made as to whether the first average gap size is greater than a prestaging threshold value. Responsive to the first average gap size being equal to or less than the prestaging threshold value, a prestaging flag is set for the list of records. Then, the list of records is retrieved into the main memory using prestaging.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 6, 2009
    Inventors: Jeffrey A. Berger, You-Chin Fuh, Yue Huang, Hong Min, Terence P. Purcell, Kou-Horng A. Yang