Patents by Inventor Petros Zerfos

Petros Zerfos 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).

  • Publication number: 20110196885
    Abstract: A method, device, and system are provided for policy management within a policy-managed environment. A policy management agent retrieves a policy enforcement point (PEP) description from a PEP registry. The policy management agent utilizes the PEP description of the PEP to search a policy library to locate and determine matching (candidate) policies, and the matching policies match the policy description of the PEP. The managed environment, which incorporates policy evaluation, uses the equivalent policy matching criteria as the policy management agent.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 11, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Seraphin B. Calo, Xiping Wang, David A. Wood, III, Petros Zerfos
  • Publication number: 20100332906
    Abstract: Methods and apparatus for managing quality of service of computing resources are presented. For example, a method implemented on a processor for managing quality of service of computing resources includes identifying, by the processor, one or more devices of a user on a network of the user; obtaining, by the processor, at least one management module for the identified one or more devices; installing the at least one management module in the processor; monitoring, by the processor, the one or more devices of the user for a problem; and determining, by the processor, a domain in which a root cause of the problem resides and, optionally, the root cause of the problem. The management module comprises information pertaining to a corresponding device. Further, the method may detect quality of service (QoS) problems and determine if the problems reside in a user domain or a service provider domain.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Applicant: International Business Machines Corporation
    Inventors: Dakshi Agrawal, Joel Branch, Kang-won Lee, Petros Zerfos
  • Patent number: 7685112
    Abstract: A method and system for autonomously downloading and indexing Hidden Web pages from Websites includes the steps of selecting a query term and issuing a query to a site-specific search interface containing Hidden Web pages. A results index is then acquired and the Hidden Web pages are downloaded from the results index. A plurality of potential query terms are then identified from the downloaded Hidden Web pages. The efficiency of each potential query term is then estimated and a next query term is selected from the plurality of potential query terms, wherein the next selected query term has the greatest efficiency. The next selected query term is then issued to the site-specific search interface using the next query term. The process is repeated until all or most of the Hidden Web pages are discovered.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: March 23, 2010
    Assignee: The Regents of the University of California
    Inventors: Alexandros Ntoulas, Junghoo Cho, Petros Zerfos
  • Publication number: 20090187983
    Abstract: A method for controlling Internet access of a mobile device by using a communication system having a number of access points includes the steps of performing a certificate-based authentication between an authentication access point and a mobile device seeking access to the Internet; transmitting a certificate from the mobile device to the authentication access point; verifying the certificate by the authentication access point; determining whether the authenticating mobile device's certificate has been revoked prior to the expiration of its lifetime; and granting the authenticating mobile device access to the Internet, if the certificate has been verified successfully and not revoked prior to the expiration of its lifetime.
    Type: Application
    Filed: September 5, 2008
    Publication date: July 23, 2009
    Applicants: Board of Trustees of the University of Illinois, Technische Universitaet Berlin
    Inventors: Petros Zerfos, Jatinder Pal Singh, Marcin Solarski, Pablo Vidales, Nathanael Thompson, Haiyun Luo
  • Publication number: 20080097958
    Abstract: A method and system is provided for autonomously downloading and indexing Hidden Web pages from Websites having site-specific search interfaces. The method may be implemented using a crawler program or the like to autonomously cull Hidden Web content. The method includes the steps of selecting a query term and issuing a query to a site-specific search interface containing Hidden Web pages. A results index is then acquired and the Hidden Web pages are downloaded from the results index. A plurality of potential query terms are then identified from the downloaded Hidden Web pages. The efficiency of each potential query term is then estimated and a next query term is selected from the plurality of potential query terms, wherein the next selected query term has the greatest efficiency. The next selected query term is then issued to the site-specific search interface using the next query term. The process is repeated until all or most of the Hidden Web pages are discovered.
    Type: Application
    Filed: May 27, 2005
    Publication date: April 24, 2008
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Alexandros Ntoulas, Junghoo Cho, Petros Zerfos
  • Publication number: 20070265803
    Abstract: A system and method for detecting a dishonest rater participating in a rating system is provided. Raters enter ratings regarding at least one entity which can be rated, and the ratings are stored. Individual values for the raters are calculated based on the ratings entered by the respective rater, and an indication value is determined based on the calculated individual values. The indication value is compared to a predetermined dishonesty threshold, and the rater is classified as dishonest based on the comparison result.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 15, 2007
    Applicant: DEUTSCHE TELEKOM AG
    Inventors: Evangelos Kotsovinos, Petros Zerfos, Nischal Piratla
  • Publication number: 20050138077
    Abstract: A system of delivering personalized streaming content to a destination based on automatic detection of context. A thin stream gateway delivers content to all devices in range, where the range is intentionally limited. Bidirectional communication is established between a fixed and a mobile gateway. The mobile gateway deduces its location from the streams received by the fixed gateway. The mobile gateway provides personal information to the fixed gateway. Handoff between gateways is also supported. The gateways can also form a blanket, that can be used to support ad hoc communication.
    Type: Application
    Filed: July 1, 2004
    Publication date: June 23, 2005
    Inventors: Panayiotis Michael, Michalis Faloutsos, Benjamin Greenstein, Fotios Konstantinidis, Michail Romesis, Petros Zerfos