Patents by Inventor Xingwen Zhang

Xingwen Zhang 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: 20200124429
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for determining routing using reinforcement learning (RL) are provided. One of the methods includes: initializing a state of an RL model based on a routing solution, wherein the RL model comprises a plurality of improvement actions for applying to the state; applying one or more of the plurality of improvement actions to the state to obtain updated routing solutions until a predetermined condition is satisfied; applying a perturbation action to obtain a perturbed routing solution and feeding the perturbed routing solution back to the RL model for the RL model to perform the applying one or more of the plurality of improvement actions according to the policy; and determining a routing solution with a minimum cost from the updated routing solutions.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Inventors: Xingwen ZHANG, Hao LU, Zhigang HUA, Shuang YANG
  • Patent number: 10620009
    Abstract: A tracking server receives GPS data from a location tracking device located in a vehicle. The GPS data describes a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The tracking server identifies noisy GPS data included in the received GPS data and revises a portion of path corresponding to the noisy GPS data. The tracking server may update a map database to include one or more road segments associated with the revised portion of the path. Furthermore, the tracking server may calculate a fare for the trip based on the revised path.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: April 14, 2020
    Assignee: Uber Technologies, Inc.
    Inventors: Sophia Cui, Thi Duong Nguyen, Theodore Russell Sumers, Miao Yu, Xingwen Zhang
  • Patent number: 10215575
    Abstract: A map server receives geographic points from a location tracking device located in a vehicle. The received geographic points describe a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The map server identifies candidate geographic points for each received geographic point where each candidate geographic point is associated with a location on a known roadway. The map server determines a graph of the candidate geographic points and identifies different sub-graphs from the graph. The map server iteratively evaluates the sub-graphs to determine a shortest path from the starting location to the destination location without evaluating all the edges in the sub-graphs.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: February 26, 2019
    Assignee: UBER TECHNOLOGIES, INC.
    Inventors: Xingwen Zhang, Thi Duong Nguyen, Miao Yu
  • Publication number: 20180245934
    Abstract: A map server receives geographic points from a location tracking device located in a vehicle. The received geographic points describe a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The map server identifies candidate geographic points for each received geographic point where each candidate geographic point is associated with a location on a known roadway. The map server determines a graph of the candidate geographic points and identifies different sub-graphs from the graph. The map server iteratively evaluates the sub-graphs to determine a shortest path from the starting location to the destination location without evaluating all the edges in the sub-graphs.
    Type: Application
    Filed: May 1, 2018
    Publication date: August 30, 2018
    Inventors: Xingwen Zhang, Thi Duong Nguyen, Miao Yu
  • Publication number: 20180238691
    Abstract: A tracking server receives GPS data from a location tracking device located in a vehicle. The GPS data describes a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The tracking server identifies noisy GPS data included in the received GPS data and revises a portion of path corresponding to the noisy GPS data. The tracking server may update a map database to include one or more road segments associated with the revised portion of the path. Furthermore, the tracking server may calculate a fare for the trip based on the revised path.
    Type: Application
    Filed: March 5, 2018
    Publication date: August 23, 2018
    Inventors: Sophia Cui, Thi Duong Nguyen, Theodore Russell Sumers, Miao Yu, Xingwen Zhang
  • Patent number: 10024673
    Abstract: A map server receives geographic points from a location tracking device located in a vehicle. The received geographic points describe a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The map server identifies candidate geographic points for each received geographic point where each candidate geographic point is associated with a location on a known roadway. The map server determines a graph of the candidate geographic points and identifies different sub-graphs from the graph. The map server iteratively evaluates the sub-graphs to determine a shortest path from the starting location to the destination location without evaluating all the edges in the sub-graphs.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: July 17, 2018
    Assignee: UBER TECHNOLOGIES, INC.
    Inventors: Xingwen Zhang, Thi Duong Nguyen, Miao Yu
  • Patent number: 9939276
    Abstract: A tracking server receives GPS data from a location tracking device located in a vehicle. The GPS data describes a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The tracking server identifies noisy GPS data included in the received GPS data and revises a portion of path corresponding to the noisy GPS data. The tracking server may update a map database to include one or more road segments associated with the revised portion of the path. Furthermore, the tracking server may calculate a fare for the trip based on the revised path.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 10, 2018
    Assignee: UBER TECHNOLOGIES, INC.
    Inventors: Sophia Cui, Thi Duong Nguyen, Theodore Russell Sumers, Miao Yu, Xingwen Zhang
  • Publication number: 20170219360
    Abstract: A tracking server receives GPS data from a location tracking device located in a vehicle. The GPS data describes a path that is representative of a pathway of the vehicle used to complete a trip from a starting location to a destination location. The tracking server identifies noisy GPS data included in the received GPS data and revises a portion of path corresponding to the noisy GPS data. The tracking server may update a map database to include one or more road segments associated with the revised portion of the path. Furthermore, the tracking server may calculate a fare for the trip based on the revised path.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 3, 2017
    Inventors: Sophia Cui, Thi Duong Nguyen, Theodore Russell Sumers, Miao Yu, Xingwen Zhang