Patents by Inventor Chengcan YE

Chengcan YE 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).

  • Error correction method and device for search term
    Patent number: 11574012
    Abstract: The present application provides an error correction method and device for search terms. The method comprises: identifying an incorrect search term; calculating weighted edit distances between the search term and pre-obtained hot terms by using a weighted edit distance algorithm, wherein, during the calculation of the weighted edit distances, different weights are set respectively for the following operations of transforming from the search term to the hot terms: an operation of inserting characters, an operation of deleting characters, an operation of replacing by characters with similar appearance or pronunciation, an operation of replacing by characters with dissimilar appearance or pronunciation, and an operation of exchanging characters; and selecting a predetermined number of hot terms based on the weighted edit distances and popularity of the hot terms for error correction prompt. The method and device of the present application can improve the error correction accuracy of error search terms.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: February 7, 2023
    Assignee: BEIJING QIYI CENTURY SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jun Hu, Yingjie Chen, Tianchang Wang, Chengcan Ye
  • ERROR CORRECTION METHOD AND DEVICE FOR SEARCH TERM
    Publication number: 20190179855
    Abstract: The present application provides an error correction method and device for search terms. The method comprises: identifying an incorrect search term; calculating weighted edit distances between the search term and pre-obtained hot terms by using a weighted edit distance algorithm, wherein, during the calculation of the weighted edit distances, different weights are set respectively for the following operations of transforming from the search term to the hot terms: an operation of inserting characters, an operation of deleting characters, an operation of replacing by characters with similar appearance or pronunciation, an operation of replacing by characters with dissimilar appearance or pronunciation, and an operation of exchanging characters; and selecting a predetermined number of hot terms based on the weighted edit distances and popularity of the hot terms for error correction prompt. The method and device of the present application can improve the error correction accuracy of error search terms.
    Type: Application
    Filed: August 14, 2017
    Publication date: June 13, 2019
    Applicant: BEIJING QIYI CENTURY SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jun HU, Yingjie CHEN, Tianchang WANG, Chengcan YE