Patents Assigned to Lexis-Nexis Group
  • Patent number: 7693704
    Abstract: A computer-automated system and method identify text in a first “citing” court case, near a “citing instance” (in which a second “cited” court case is cited), that indicates the reason(s) for citing (RFC). The automated method of designating text, taken from a set of citing documents, as reasons for citing (RFC) that are associated with respective citing instances of a cited document, has steps including: obtaining contexts of the citing instances in the respective citing documents (each context including text that includes the citing instance and text that is near the citing instance), analyzing the content of the contexts, and selecting (from the citing instances' context) text that constitutes the RFC, based on the analyzed content of the contexts. A related computer-automated system and method selects content words that are highly related to the reasons a particular document is cited, and gives them weights that indicate their relative relevance.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: April 6, 2010
    Assignee: Lexis-Nexis Group, a division of Reed Elsevier Inc.
    Inventors: Timothy L. Humphrey, Xin Allan Lu, Afsar Parhizgar, Salahuddin Ahmed, James S. Wiltshire, Jr., John T. Morelock, Joseph P. Harmon, Spiro G. Collias, Paul Zhang
  • Patent number: 7464025
    Abstract: A computer-automated system and method identify text in a first “citing” court case, near a “citing instance” (in which a second “cited” court case is cited), that indicates the reason(s) for citing (RFC). The automated method of designating text, taken from a set of citing documents, as reasons for citing (RFC) that are associated with respective citing instances of a cited document, has steps including: obtaining contexts of the citing instances in the respective citing documents (each context including text that includes the citing instance and text that is near the citing instance), analyzing the content of the contexts, and selecting (from the citing instances' context) text that constitutes the RFC, based on the analyzed content of the contexts. A related computer-automated system and method selects content words that are highly related to the reasons a particular document is cited, and gives them weights that indicate their relative relevance.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: December 9, 2008
    Assignee: Lexis-Nexis Group
    Inventors: Timothy L. Humphrey, Xin Allan Lu, Afsar Parhizgar, Salahuddin Ahmed, James S. Wiltshire, Jr., John T. Morelock, Joseph P. Harmon, Spiro G. Collias, Paul Zhang
  • Patent number: 6856988
    Abstract: A computer-automated system and method identify text in a first “citing” court case, near a “citing instance” (in which a second “cited” court case is cited), that indicates the reason(s) for citing (RFC). The automated method of designating text, taken from a set of citing documents, as reasons for citing (RFC) that are associated with respective citing instances of a cited document, has steps including: obtaining contexts of the citing instances in the respective citing documents (each context including text that includes the citing instance and text that is near the citing instance), analyzing the content of the contexts, and selecting (from the citing instances' context) text that constitutes the RFC, based on the analyzed content of the contexts. A related computer-automated system and method selects content words that are highly related to the reasons a particular document is cited, and gives them weights that indicate their relative relevance.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: February 15, 2005
    Assignee: Lexis-Nexis Group
    Inventors: Timothy L. Humphrey, Xin Allan Lu, Afsar Parhizgar, Salahuddin Ahmed, James S. Wiltshire, Jr., John T. Morelock, Joseph P. Harmon, Spiro G. Collias, Paul Zhang
  • Patent number: 6772149
    Abstract: A computer-implemented method of gathering large quantities of training data from case law documents (especially suitable for use as input to a learning algorithm that is used in a subsequent process of recognizing and distinguishing fact passages and discussion passages in additional case law documents) has steps of: partitioning text in the documents by headings in the documents, comparing the headings in the documents to fact headings in a fact heading list and to discussion headings in a discussion heading list, filtering from the documents the headings and text that is associated with the headings, and storing (on persistent storage in a manner adapted for input into the learning algorithm) fact training data and discussion training data that are based on the filtered headings and the associated text.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: August 3, 2004
    Assignee: Lexis-Nexis Group
    Inventors: John T. Morelock, James S. Wiltshire, Jr., Salahuddin Ahmed, Timothy Lee Humphrey, Xin Allan Lu