Patents by Inventor Liqin Xu

Liqin Xu 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: 20180308124
    Abstract: Machine learning techniques are described for generating recommendations using decision trees. A decision tree is generated based on training data that comprises multiple training instances, each of which comprises a feature value for each of multiple features and a label of a target variable. The multiple features correspond to attributes of multiple content delivery campaigns. Later, feature values of a content delivery campaign are received. The decision tree is traversed using the feature values to generate output. Based on the output, one or more recommendations are identified and the one or more recommendations are presented on a computing device.
    Type: Application
    Filed: April 24, 2017
    Publication date: October 25, 2018
    Inventors: Huiji Gao, Yuan Gao, Kun Liu, Liqin Xu
  • Publication number: 20180087082
    Abstract: The present invention provides a hydroxyacyl-coenzyme A dehydrogenase gene, an acyl-coenzyme A thiolase gene, genetically engineered strains and a use thereof. The hydroxyacyl-coenzyme A dehydrogenase gene encodes a protein (i) or (ii) as follows: (i) having an amino acid sequence according to SEQ ID NO 2; (ii) derived by substituting, deleting or inserting one or more amino acids in the amino acid sequence defined by (i) and having the same function as that of the protein of (i). The present invention constructs genetically engineered Mycobacterium strains lacking of a hydroxyacyl-coenzyme A dehydrogenase gene or an acyl-coenzyme A thiolase gene, which are used in the preparation of steroidal compounds, such as 1,4-BNA, 4-BNA, 9-OH-BNA, etc . . .
    Type: Application
    Filed: December 12, 2014
    Publication date: March 29, 2018
    Inventors: FENGQING WANG, DONGZHI WEI, LIQIN XU, HAOHAO LIU, XINBIN LIU, NENGHUI CHEN
  • Publication number: 20170090006
    Abstract: A method for localizing for GPS denied environments is provided with a plurality of broadcasting transmitters and a software-defined radio (SDR). A pre-processing stage and a query phase is executed for localizing an unknown location. The results from the preprocessing stage are made available to the query stage. A simulated power spectrum is computed for a region of interest during the pre-processing phase via the plurality of broadcasting transmitters. A transmitter location, a radius of influence, and a power contour plot of each of the plurality of broadcasting transmitters are used for computing the simulated power spectrum. Next, a peak-finding process, a filtering process, and a localization process is executed during the query phase in order to identify the unknown location.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 30, 2017
    Inventors: Piyush Kumar, Tathagata Mukherjee, Eduardo L. Pasiliao, JR., Liqin Xu
  • Patent number: 9438689
    Abstract: Method and system are provided to determine a member profile associated with a reference to a person in a publication and may be used beneficially to identify members of a social network in news articles. The system may be configured to detect a publication that was shared by a member of an on-line social networking system, determine that the publication includes a name entity, and identify a member profile in the on-line social networking system that represents a member referenced by the name entity. The process of identifying a member profile in the on-line social networking system that represents a member referenced by the name entity may include building a list of candidate profiles from the member profiles of the on-line social networking system and selecting a matching profile from the candidate profiles, utilizing one or more disambiguation techniques.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: September 6, 2016
    Assignee: LinkedIn Corporation
    Inventors: Anand R. Iyer, Hyun Chul Lee, Ryan Roslansky, Liqin Xu, Runfang Zhou
  • Patent number: 9116979
    Abstract: Profiling systems and methods of creating and using user interest profiles are described. In some example embodiments, the method includes: creating a topic set which includes topics which are organized in a hierarchical structure which includes a plurality of topic levels including an upper topic level and a lower topic level, each topic in the lower topic level being a subtopic of at least one of the topics in the upper topic level; monitoring interest in a plurality of documents for a user to identify one or more documents-of-interest to the user; and based on the monitored interest for the user, creating an interest profile for the user by determining a measure of topical interest for the user for at least one of the topics at the upper topic level and for a subtopic of that topic, the subtopic being at the lower topic level.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: August 25, 2015
    Assignee: Rogers Communications Inc.
    Inventors: Hyun Chul Lee, Yingbo Miao, Liqin Xu
  • Patent number: 8972413
    Abstract: Methods and comment association systems for associating one or more comments with one or more primary electronic documents are described. In one aspect, the method comprises: identifying, at a comment association system, one or more key terms from at least a portion of the one or more primary electronic documents; identifying, at the comment association system, one or more comments associated with the identified key terms; determining, at the comment association system, whether an identified comment is sufficiently related to the one or more primary electronic documents by calculating one or more relation score for that identified comment and comparing the relation score to one or more threshold; and if the identified comment is sufficiently related to the one or more primary electronic documents, then associating the identified comment with the one or more primary electronic documents at the comment association system.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: March 3, 2015
    Assignee: Rogers Communications Inc.
    Inventors: Hyun Chul Lee, Liqin Xu, Ke Zeng
  • Publication number: 20150032653
    Abstract: Method and system are provided to determine a member profile associated with a reference to a person in a publication and may be used beneficially to identify members of a social network in news articles. The system may be configured to detect a publication that was shared by a member of an on-line social networking system, determine that the publication includes a name entity, and identify a member profile in the on-line social networking system that represents a member referenced by the name entity. The process of identifying a member profile in the on-line social networking system that represents a member referenced by the name entity may include building a list of candidate profiles from the member profiles of the on-line social networking system and selecting a matching profile from the candidate profiles, utilizing one or more disambiguation techniques.
    Type: Application
    Filed: September 23, 2014
    Publication date: January 29, 2015
    Inventors: Anand R. Iyer, Hyun Chul Lee, Ryan Roslansky, Liqin Xu, Runfang Zhou
  • Patent number: 8868469
    Abstract: A phrase identification system and method are provided. The method comprises: identifying one or more phrase candidates in the electronic document; selecting one of the phrase candidates; numerically representing features of the selected phrase candidates to obtain a numeric feature representation associated with that phrase candidate; and inputting the numeric feature representation into a machine learning classifier, the machine learning classifier being configured to determine, based on each numeric feature representation, whether the phrase candidate associated with that numeric feature representation is a phrase.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: October 21, 2014
    Assignee: Rogers Communications Inc.
    Inventors: Liqin Xu, Hyun Chul Lee
  • Patent number: 8849813
    Abstract: Method and system are provided to determine a member profile associated with a reference to a person in a publication and may be used beneficially to identify members of a social network in news articles. The system may be configured to detect a publication that was shared by a member of an on-line social networking system, determine that the publication includes a name entity, and identify a member profile in the on-line social networking system that represents a member referenced by the name entity. The process of identifying a member profile in the on-line social networking system that represents a member referenced by the name entity may include building a list of candidate profiles from the member profiles of the on-line social networking system and selecting a matching profile from the candidate profiles, utilizing one or more disambiguation techniques.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: September 30, 2014
    Assignee: LinkedIn Corporation
    Inventors: Anand R. Iyer, Hyun Chul Lee, Ryan Roslansky, Liqin Xu, Runfang Zhou
  • Patent number: 8380492
    Abstract: A method and system for cleaning an electronic document are provided. The method comprises: identifying at least one sentence in the electronic document; numerically representing features of the sentence to obtain a numeric feature representation associated with the sentence; inputting the numeric feature representation into a machine learning classifier, the machine learning classifier being configured to determine, based on each numeric feature representation, whether the sentence associated with that numeric feature representation is a bad sentence; and removing sentences determined to be bad sentences from the electronic document to create a cleaned document.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: February 19, 2013
    Assignee: Rogers Communications Inc.
    Inventors: Liqin Xu, Hyun Chul Lee
  • Publication number: 20120330975
    Abstract: Profiling systems and methods of creating and using user interest profiles are described. In some example embodiments, the method includes: creating a topic set which includes topics which are organized in a hierarchical structure which includes a plurality of topic levels including an upper topic level and a lower topic level, each topic in the lower topic level being a subtopic of at least one of the topics in the upper topic level; monitoring interest in a plurality of documents for a user to identify one or more documents-of-interest to the user; and based on the monitored interest for the user, creating an interest profile for the user by determining a measure of topical interest for the user for at least one of the topics at the upper topic level and for a subtopic of that topic, the subtopic being at the lower topic level.
    Type: Application
    Filed: December 2, 2011
    Publication date: December 27, 2012
    Applicant: ROGERS COMMUNICATIONS INC.
    Inventors: Hyun Chul LEE, Yingbo MIAO, Liqin XU
  • Publication number: 20120330968
    Abstract: Methods and comment association systems for associating one or more comments with one or more primary electronic documents are described. In one aspect, the method comprises: identifying, at a comment association system, one or more key terms from at least a portion of the one or more primary electronic documents; identifying, at the comment association system, one or more comments associated with the identified key terms; determining, at the comment association system, whether an identified comment is sufficiently related to the one or more primary electronic documents by calculating one or more relation score for that identified comment and comparing the relation score to one or more threshold; and if the identified comment is sufficiently related to the one or more primary electronic documents, then associating the identified comment with the one or more primary electronic documents at the comment association system.
    Type: Application
    Filed: October 5, 2011
    Publication date: December 27, 2012
    Applicant: ROGERS COMMUNICATIONS INC.
    Inventors: Hyun Chul LEE, Liqin XU, Ke ZENG
  • Patent number: 8078467
    Abstract: This invention provides a device and method for language model switching and adaptation, wherein the device comprises a notification manager which notifies a language model switching section of the current status information or the request for the language model of an destination application when the status of the destination application is changed; a language model switching section which selects one or more language models to be switched from a language model set according to the received current status information or the request; a LMB engine decodes a user input using the one or more selected language models; and a language model adaptation section which receives the decoded result and modifies the one or more selected language models based on the decoded result. Therefore, the user input is more accurate even if the language model switching section performs different switches among different language models and the performance of the language models are improved by the language model adaptation section.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: December 13, 2011
    Assignee: NEC (China) Co., Ltd.
    Inventors: Genqing Wu, Liqin Xu
  • Publication number: 20110093258
    Abstract: A method and system for cleaning an electronic document are provided. The method comprises: identifying at least one sentence in the electronic document; numerically representing features of the sentence to obtain a numeric feature representation associated with the sentence; inputting the numeric feature representation into a machine learning classifier, the machine learning classifier being configured to determine, based on each numeric feature representation, whether the sentence associated with that numeric feature representation is a bad sentence; and removing sentences determined to be bad sentences from the electronic document to create a cleaned document.
    Type: Application
    Filed: May 7, 2010
    Publication date: April 21, 2011
    Applicant: 2167959 ONTARIO INC.
    Inventors: Liqin Xu, Hyun Chul Lee
  • Publication number: 20110093414
    Abstract: A phrase identification system and method are provided. The method comprises: identifying one or more phrase candidates in the electronic document; selecting one of the phrase candidates; numerically representing features of the selected phrase candidates to obtain a numeric feature representation associated with that phrase candidate; and inputting the numeric feature representation into a machine learning classifier, the machine learning classifier being configured to determine, based on each numeric feature representation, whether the phrase candidate associated with that numeric feature representation is a phrase.
    Type: Application
    Filed: May 7, 2010
    Publication date: April 21, 2011
    Applicant: 2167959 ONTARIO INC.
    Inventors: Liqin Xu, Hyun Chul Lee
  • Publication number: 20090119336
    Abstract: The present invention provides an apparatus and a method for categorizing entities based on time-series relation graphs. In each of the time-series relation graphs within a prescribed time period, nodes represent entities, and links between the nodes represent entity relations in a corresponding time unit. The inventive apparatus for categorizing entities based on time-series relation graphs comprises: a time-series relation graph categorizing means for categorizing the nodes in each of the time-series relation graphs to generate a node category result for the corresponding time unit in time sequence; and a category result post-processing means for post-processing all the node category results for the corresponding time units in time sequence generated by the time-series relation graph categorizing means to generate finally categorized nodes.
    Type: Application
    Filed: October 30, 2008
    Publication date: May 7, 2009
    Applicant: NEC (CHINA) CO., LTD.
    Inventors: Liqin XU, Changjian HU, Toshikazu FUKUSHIMA
  • Publication number: 20090112825
    Abstract: The present invention provides a relation mining apparatus and method for mining data for time-series relations and events among texts in various forms such as news, blogs, industrial reports and technical papers which may refer to various relations. According to the present invention, it is possible to automatically extract entity relation instances from a large amount of the texts as described above originating from the Internet or other mediums, mine for time-series entity relations, relation scores and entity importances in various categories based on the extracted instances, and finally extract important events therefrom. Also, according to the present invention, it is possible to perform calculating on the above extracted time-series relations for the corporation entities and business relations, so as to achieve an analysis on Five Forces. Further, it is also possible to present the result to final users by a visualizing module.
    Type: Application
    Filed: October 30, 2008
    Publication date: April 30, 2009
    Applicant: NEC (CHINA) CO., LTD
    Inventors: Liqin XU, Changjian HU, Toshikazu FUKUSHIMA
  • Publication number: 20080040099
    Abstract: This invention provides a device and method for language model switching and adaptation, wherein the device comprises a notification manager which notifies a language model switching section of the current status information or the request for the language model of an destination application when the status of the destination application is changed; a language model switching section which selects one or more language models to be switched from a language model set according to the received current status information or the request; a LMB engine decodes a user input using the one or more selected language models; and a language model adaptation section which receives the decoded result and modifies the one or more selected language models based on the decoded result. Therefore, the user input is more accurate even if the language model switching section performs different switches among different language models and the performance of the language models are improved by the language model adaptation section.
    Type: Application
    Filed: March 8, 2007
    Publication date: February 14, 2008
    Applicant: NEC (CHINA) CO., LTD.
    Inventors: Genqing Wu, Liqin Xu
  • Publication number: 20060206313
    Abstract: This invention provides a dictionary learning method, said method comprising the steps of: learning a lexicon and a Statistical Language Model from an untagged corpus; integrating the lexicon, the Statistical Language Mode and subsidiary word encoding information into a small size dictionary. And this invention also provides an input method on a user terminal device using the dictionary with Part-of-Speech information and a Part-of-Speech Bi-gram Model added, and a user terminal device using the same. Therefore, sentence level prediction and word level prediction can be given by the user terminal device and the input is speeded up by using the dictionary which is searched by a Patricia Tree index of a dictionary index.
    Type: Application
    Filed: January 24, 2006
    Publication date: September 14, 2006
    Inventors: Liqin Xu, Min-Yu Hsueh