Patents by Inventor Zhitao Shen

Zhitao Shen 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: 11514003
    Abstract: Methods, systems, and apparatus for, for data compression based on a key-value store. In one aspect, a method includes generating, at a server, a current dictionary based on a plurality of key-values stored in a storage system of the server; receiving a key-value pair transmitted by a client device; and performing, at the server, data compression on a key-value in the key-value pair by using the current dictionary; and storing the key-value in the storage system of the server.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: November 29, 2022
    Assignee: Alipay (Hangzhou) Information Technology Co., Ltd.
    Inventors: Qiming Sun, Zhitao Shen, Wei Jia, Wen Li
  • Publication number: 20220019562
    Abstract: Methods, systems, and apparatus for, for data compression based on a key-value store. In one aspect, a method includes generating, at a server, a current dictionary based on a plurality of key-values stored in a storage system of the server; receiving a key-value pair transmitted by a client device; and performing, at the server, data compression on a key-value in the key-value pair by using the current dictionary; and storing the key-value in the storage system of the server.
    Type: Application
    Filed: June 28, 2021
    Publication date: January 20, 2022
    Applicant: ALIPAY (HANGZHOU) INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Qiming Sun, Zhitao Shen, Wei Jia, Wen Li
  • Patent number: 9930494
    Abstract: Location data is obtained from signals transmitted by a first plurality of mobile wireless devices in a wireless network, wherein the first plurality of mobile wireless devices are moving within a predefined space, and wherein the location data comprises a plurality of location data time points, each location data time point including a timestamp, a unique mobile wireless device identifier, and location information indicating where in the predefined space an associated mobile wireless device is located. For each mobile wireless device, location data time points are aggregated to generate a set of aggregated location data for each mobile wireless device, and the set of aggregated location data is analyzed to determine characteristics corresponding to time-dependent behavior and location-specific behavior of the corresponding mobile wireless device. A user of each corresponding mobile wireless device is classified into a category of a plurality of categories based on the determined characteristics.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: March 27, 2018
    Assignee: Cisco Technology, Inc.
    Inventors: Hao Liu, David Tang, Zhitao Shen, Hua Zhang, Vikram Kumaran
  • Publication number: 20170193371
    Abstract: In one embodiment, a method includes receiving a data stream at an analytics device, applying at the analytics device, continuous streaming queries to the data stream to build a plurality of models simultaneously for a plurality of time windows, each of the models comprising an incremental machine learning algorithm with parameters optimized for one of the time windows, validating the models in parallel using real-time data at the analytics device, selecting at least one of the models based on a comparison of validation results for the models, and applying the selected model to the real-time data to generate a data prediction at the analytics device. An apparatus and logic are also disclosed herein.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Applicant: CISCO TECHNOLOGY, INC.
    Inventors: Zhitao Shen, Vikram Kumaran, David Tang, Hao Liu
  • Patent number: 9699603
    Abstract: According to the techniques presented herein, location data from signals transmitted by a plurality of mobile wireless devices in a wireless network are obtained. For each mobile wireless device, location data time points are aggregated to generate a plurality of routines or paths of movement for each mobile wireless device within a predefined space. The predefined space is partitioned into a plurality of units and each routine of the plurality of routines is also partitioned into a plurality of subroutines or segments. For each unit, one or more subroutines within a predefined distance of a frequent subroutine are combined with the frequent subroutine, and the frequent subroutines may be displayed on a graphical interface to visualize aggregate movement of the plurality of mobile wireless devices within the predefined space. Frequent subroutines may be analyzed in an automated manner to generate notifications and alerts.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: July 4, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Zhitao Shen, David Tang, Hao Liu, Yu Zhang
  • Publication number: 20170111760
    Abstract: According to the techniques presented herein, location data from signals transmitted by a plurality of mobile wireless devices in a wireless network are obtained. For each mobile wireless device, location data time points are aggregated to generate a plurality of routines or paths of movement for each mobile wireless device within a predefined space. The predefined space is partitioned into a plurality of units and each routine of the plurality of routines is also partitioned into a plurality of subroutines or segments. For each unit, one or more subroutines within a predefined distance of a frequent subroutine are combined with the frequent subroutine, and the frequent subroutines may be displayed on a graphical interface to visualize aggregate movement of the plurality of mobile wireless devices within the predefined space. Frequent subroutines may be analyzed in an automated manner to generate notifications and alerts.
    Type: Application
    Filed: October 14, 2015
    Publication date: April 20, 2017
    Inventors: Zhitao Shen, David Tang, Hao Liu, Yu Zhang
  • Publication number: 20170105099
    Abstract: Location data is obtained from signals transmitted by a first plurality of mobile wireless devices in a wireless network, wherein the first plurality of mobile wireless devices are moving within a predefined space, and wherein the location data comprises a plurality of location data time points, each location data time point including a timestamp, a unique mobile wireless device identifier, and location information indicating where in the predefined space an associated mobile wireless device is located. For each mobile wireless device, location data time points are aggregated to generate a set of aggregated location data for each mobile wireless device, and the set of aggregated location data is analyzed to determine characteristics corresponding to time-dependent behavior and location-specific behavior of the corresponding mobile wireless device. A user of each corresponding mobile wireless device is classified into a category of a plurality of categories based on the determined characteristics.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 13, 2017
    Inventors: Hao Liu, David Tang, Zhitao Shen, Hua Zhang, Vikram Kumaran