Patents by Inventor Yuhai Tu

Yuhai Tu 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).

  • Patent number: 7860660
    Abstract: Generally, the present invention applies a transformation to convert a probability distribution of gene expression signals in control samples to a uniform distribution. The uniform distribution allows better comparisons between expression levels for genes. The transformation is derived from gene expression signals of control data, and is applied to gene expression signals of phenotype data. The phenotype data can be represented in a matrix format. A number of gene expression patterns may be determined (in the form of submatrices) that will characterize the phenotype. The uniform distribution helps in this regard, as it allows better comparisons of patterns. The gene expression patterns can then be used to classify samples as belonging to the phenotype set. Preferably, a discriminant function is used to compare a sample with the gene expression patterns that characterize the phenotype. The discriminant function can determine a score that can be used to determine whether the sample belongs to the phenotype.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: December 28, 2010
    Assignee: International Business Machines Corporation
    Inventors: Andrea Califano, Gustavo A. Stolovitzky, Yuhai Tu
  • Publication number: 20100023273
    Abstract: Generally, the present invention applies a transformation to convert a probability distribution of gene expression signals in control samples to a uniform distribution. The uniform distribution allows better comparisons between expression levels for genes. The transformation is derived from gene expression signals of control data, and is applied to gene expression signals of phenotype data. The phenotype data can be represented in a matrix format. A number of gene expression patterns may be determined (in the form of submatrices) that will characterize the phenotype. The uniform distribution helps in this regard, as it allows better comparisons of patterns. The gene expression patterns can then be used to classify samples as belonging to the phenotype set. Preferably, a discriminant function is used to compare a sample with the gene expression patterns that characterize the phenotype. The discriminant function can determine a score that can be used to determine whether the sample belongs to the phenotype.
    Type: Application
    Filed: October 6, 2009
    Publication date: January 28, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Andrea Califano, Gustavo A. Stolovitzky, Yuhai Tu
  • Patent number: 7613851
    Abstract: Techniques for reconstructing networks are provided. In one aspect, a method for reconstructing a synthetic network, such as a synthetic biological network, is provided. In another aspect, a method for reconstructing a supply chain network is provided. Exemplary supply chain networks include supply chains for petroleum distribution.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: November 3, 2009
    Assignee: International Business Machines Corporation
    Inventors: J. Jeremy Rice, Ajay K. Royyuru, Gustavo Stolovitzky, Yuhai Tu
  • Patent number: 7496550
    Abstract: Techniques for reconstructing networks are provided. In one aspect, a method for reconstructing a synthetic network, such as a synthetic biological network, is provided. In another aspect, a method for reconstructing a supply chain network is provided. Exemplary supply chain networks include supply chains for petroleum distribution.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: February 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: J. Jeremy Rice, Gustavo Stolovitzky, Yuhai Tu
  • Patent number: 7433857
    Abstract: Techniques for reconstructing networks are provided. In one aspect, a method for reconstructing a synthetic network, such as a synthetic biological network, is provided. In another aspect, a method for reconstructing a supply chain network is provided. Exemplary supply chain networks include supply chains for petroleum distribution.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: October 7, 2008
    Assignee: International Business Machines Corporation
    Inventors: J. Jeremy Rice, Ajay K. Royyuru, Gustavo Stolovitzky, Yuhai Tu
  • Publication number: 20080228601
    Abstract: Techniques for reconstructing networks are provided. In one aspect, a method for reconstructing a synthetic network, such as a synthetic biological network, is provided. In another aspect, a method for reconstructing a supply chain network is provided. Exemplary supply chain networks include supply chains for petroleum distribution.
    Type: Application
    Filed: May 28, 2008
    Publication date: September 18, 2008
    Applicant: International Business Machines Corporation
    Inventors: J. Jeremy Rice, Ajay K. Royyuru, Gustavo Stolovitzky, Yuhai Tu
  • Publication number: 20050096958
    Abstract: Techniques for reconstructing networks are provided. In one aspect, a method for reconstructing a synthetic network, such as a synthetic biological network, is provided. In another aspect, a method for reconstructing a supply chain network is provided. Exemplary supply chain networks include supply chains for petroleum distribution.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Applicant: International Business Machines Corporation
    Inventors: J. Rice, Ajay Royyuru, Gustavo Stolovitzky, Yuhai Tu
  • Publication number: 20050096887
    Abstract: Techniques for reconstructing networks are provided. In one aspect, a method for reconstructing a synthetic network, such as a synthetic biological network, is provided. In another aspect, a method for reconstructing a supply chain network is provided. Exemplary supply chain networks include supply chains for petroleum distribution.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Applicant: International Business Machines Corporation
    Inventors: J. Rice, Gustavo Stolovitzky, Yuhai Tu
  • Patent number: 6816790
    Abstract: Techniques for analyzing gene expression levels are provided. In one aspect of the invention, the technique provides a method for determining a concentration level of a target nucleic acid, the target nucleic acid comprising at least one target oligonucleotide. The method determines (i) a measure of affinity value of the target oligonucleotide with a probe oligonucleotide; and (ii) a hybridization intensity value for the target oligonucleotide and the probe oligonucleotide at a probe spot. The measure of affinity value and the hybridization intensity value are used to determine the concentration level of the target nucleic acid.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: November 9, 2004
    Assignee: International Business Machines Corporation
    Inventors: Geoffrey Grinstein, Glenn Allen Held, Yuhai Tu
  • Publication number: 20040128082
    Abstract: Techniques for analyzing gene expression levels are provided. In one aspect of the invention, the technique provides a method for determining a concentration level of a target nucleic acid, the target nucleic acid comprising at least one target oligonucleotide. The method determines (i) a measure of affinity value of the target oligonucleotide with a probe oligonucleotide; and (ii) a hybridization intensity value for the target oligonucleotide and the probe oligonucleotide at a probe spot. The measure of affinity value and the hybridization intensity value are used to determine the concentration level of the target nucleic acid.
    Type: Application
    Filed: February 13, 2003
    Publication date: July 1, 2004
    Applicant: International Business Machines Corporation
    Inventors: Geoffrey Grinstein, Glenn Allen Held, Yuhai Tu
  • Publication number: 20020042681
    Abstract: Generally, the present invention applies a transformation to convert a probability distribution of gene expression signals in control samples to a uniform distribution. The uniform distribution allows better comparisons between expression levels for genes. The transformation is derived from gene expression signals of control data, and is applied to gene expression signals of phenotype data. The phenotype data can be represented in a matrix format. A number of gene expression patterns may be determined (in the form of submatrices) that will characterize the phenotype. The uniform distribution helps in this regard, as it allows better comparisons of patterns. The gene expression patterns can then be used to classify samples as belonging to the phenotype set. Preferably, a discriminant function is used to compare a sample with the gene expression patterns that characterize the phenotype. The discriminant function can determine a score that can be used to determine whether the sample belongs to the phenotype.
    Type: Application
    Filed: April 24, 2001
    Publication date: April 11, 2002
    Applicant: International Business Machines Corporation
    Inventors: Andrea Califano, Gustavo A. Stolovitzky, Yuhai Tu