Patents by Inventor Nandakishore Kambhatla

Nandakishore Kambhatla 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: 20090077243
    Abstract: A system for recovering from an interruption of communication on a network between computer users which includes a computer network connecting a plurality of users using computers in a communication session. A computer readable medium encoded with a computer program is connected to at least one of the users' computers for storing generated communication between the users during the communication session. The computer program reconnects the session between the users, and restores the generated communication between the users after detecting an interruption of the session.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Dinesh Garg, Brent Hailpern, Nandakishore Kambhatla, Peter K. Malkin, Mark N. Wegman
  • Publication number: 20080319735
    Abstract: Systems and methods are provided for automated semantic role labeling for languages having complex morphology. In one aspect, a method for processing natural language text includes receiving as input a natural language text sentence comprising a sequence of white-space delimited words including inflicted words that are formed of morphemes including a stem and one or more affixes, identifying a target verb as a stem of an inflicted word in the text sentence, grouping morphemes from one or more inflicted words with the same syntactic role into constituents, and predicting a semantic role of a constituent for the target verb.
    Type: Application
    Filed: June 22, 2007
    Publication date: December 25, 2008
    Inventors: Nandakishore Kambhatla, Imed Zitouni
  • Publication number: 20080243888
    Abstract: A Bell Tree data structure is provided to model the process of chaining the mentions, from one or more documents, into entities, tracking the entire process; where the data structure is used in an entity tracking process that produces multiple results ranked by a product of probability scores.
    Type: Application
    Filed: May 5, 2008
    Publication date: October 2, 2008
    Inventors: Abraham Ittycheriah, Hongyan Jing, Nandakishore Kambhatla, Xiaoqiang Luo, Salim E. Roukos
  • Publication number: 20080222511
    Abstract: Methods and apparatus are provided for annotating documents with one or more of entities, events and relations. Documents are annotated by presenting the document to a user; presenting the user with a list of possible entity types, wherein the list of possible entity types is configurable; and obtaining at least one mention annotation that associates a selected phrase in the document with one of the possible entity types. The selected phrase can be presented to the user, for example, based on one or more presentation rules associated with the associated entity type. The method can be implemented, for example, in a client-server configuration where a browser communicates with a remote server.
    Type: Application
    Filed: April 2, 2008
    Publication date: September 11, 2008
    Applicant: International Business Machines Corporation
    Inventors: Nandakishore Kambhatla, Salim Estephan Roukos
  • Patent number: 7398274
    Abstract: A Bell Tree data structure is provided to model the process of chaining the mentions, from one or more documents, into entities, tracking the entire process; where the data structure is used in an entity tracking process that produces multiple results ranked by a product of probability scores.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: July 8, 2008
    Assignee: International Business Machines Corporation
    Inventors: Abraham Ittycheriah, Hongyan Jing, Nandakishore Kambhatla, Xiaoqiang Luo, Salim E. Roukos
  • Publication number: 20070061703
    Abstract: Methods and apparatus are provided for annotating documents with one or more of entities, events and relations. Documents are annotated by presenting the document to a user; presenting the user with a list of possible entity types, wherein the list of possible entity types is configurable; and obtaining at least one mention annotation that associates a selected phrase in the document with one of the possible entity types. The selected phrase can be presented to the user, for example, based on one or more presentation rules associated with the associated entity type. The method can be implemented, for example, in a client-server configuration where a browser communicates with a remote server.
    Type: Application
    Filed: September 12, 2005
    Publication date: March 15, 2007
    Applicant: International Business Machines Corporation
    Inventors: Nandakishore Kambhatla, Salim Roukos
  • Publication number: 20050237227
    Abstract: A Bell Tree data structure is provided to model the process of chaining the mentions, from one or more documents, into entities, tracking the entire process; where the data structure is used in an entity tracking process that produces multiple results ranked by a product of probability scores.
    Type: Application
    Filed: April 27, 2004
    Publication date: October 27, 2005
    Applicant: International Business Machines Corporation
    Inventors: Abraham Ittycheriah, Hongyan Jing, Nandakishore Kambhatla, Xiaoqiang Luo, Salim Roukos
  • Patent number: 6829603
    Abstract: This patent describes a novel system, method, and program product that are used in interactive natural language dialog. One or more presentation managers operating on a computer system present information from the computer system to one or more users over network interface(s) and accept queries from the users using one or more known input/output modalities (e.g. Speech, typed in text, pointing devices, etc.). A natural language parser parses one or more natural language phrases received over one or more of the network interfaces by one or more of the presentation managers into one or more logical forms (parsed user input), each logical form having a grammatical and structural organization. A dialog manager module maintains and directs interactive sessions between each of the users and the computer system.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: December 7, 2004
    Assignee: International Business Machines Corp.
    Inventors: Joyce Yue Chai, Sunil Subramanyam Govindappa, Nandakishore Kambhatla, Tetsunosuke Fujisaki, Catherine G. Wolf, Dragomir Radkov Radev, Yiming Ye, Wlodek Zadrozny
  • Patent number: 6704394
    Abstract: The invention is directed towards an automated system for extracting voice messages from a voice mail system and for providing unified access to voice mail and electronic mail or voice mail and the internet. For a given user, a voice mail remote access server connects to the user's voice mail system through a telephone or data network, and uses speech recognition and understanding to navigate through the prompts of the voice mail system and extract the user's voice mail. Depending upon the access mechanism preferred by the user, the voice messages are sent as e-mail messages with attachments (audio files) to the user or made accessible to the user's world wide web server or displayed to the user using a stand-alone voice mail player application.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: March 9, 2004
    Assignee: International Business Machines Corporation
    Inventors: Nandakishore Kambhatla, Maroun Touma, Catherine Gody Wolf, Wlodek Wlodzimierz Zadrozny
  • Patent number: 6418423
    Abstract: Disclosed is a system and a method for combining the computational resources of numerous embedded devices to enable any of them to perform complex tasks like speech recognition or natural language understanding. A distinguished master device communicates with a network of embedded devices, and organizes them as the nodes of a neural network. To each node (embedded device) in the neural network, the master device sends the activation function for that node and the connectivity pattern for that node. The master device sends the inputs for the network to the distinguished input nodes of the network. During computation, each node computes the activation function of all of its inputs and sends its activation to all the nodes to which it needs to send output to. The outputs of the neural network are sent to the master device. Thus, the network of embedded devices can perform any computation (like speech recognition, natural language understanding, etc.) which can be mapped onto a neural network model.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: July 9, 2002
    Assignee: International Business Machines Corporation
    Inventors: Nandakishore Kambhatla, Dimitri Kanevsky, Wlodek Wlodzimierz Zadrozny
  • Patent number: 5937385
    Abstract: An automated system generates and revises grammars for speech recognizers in a speech recognition system. Given an initial grammar, expressed in terms of non-terminals in Backus-Naur Form (BNF) notation, a sentence generator generates a list of all sentences accepted by the grammar. From this list, a corpus of inappropriate or irrelevant sentences which are accepted by the grammar (counter-examples) is identified. A grammar revisor program uses the original grammar and the list of counter examples, to generate a pruned list from which a revised grammar is generated. The revision process is iterated several times either concatenating or merging pairs of non-terminals until the revised grammar is deemed satisfactory in that it accepts as legal only relevant sentences. The revised grammar is used by the speech recognizer, thus reducing errors in the overall system.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: August 10, 1999
    Assignee: International Business Machines Corporation
    Inventors: Wlodek Wlodzimierz Zadrozny, Nandakishore Kambhatla