Patents Assigned to iFLYTEK Co., Ltd.
  • Patent number: 10339428
    Abstract: An intelligent scoring method and system for a text objective question, the method comprising: acquiring an answer image of a text objective question (101); segmenting the answer image to obtain one or more segmentation results of an answer string to be identified (102); determining whether any of the segmentation results has the same number of characters as the standard answer (103); if no, the answer is determined to be wrong (106); otherwise, calculating identification confidence of the segmentation result having the same number of words as the standard answer, and/or calculating the identification confidence of respective characters in the segmentation result having the same number of words as the standard answer (104); determining whether the answer is correct according to the calculated identification confidence (105). The method can automatically score text objective questions, thus reducing consumption of human resource, and improving scoring efficiency and accuracy.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 2, 2019
    Assignee: IFLYTEK CO., LTD.
    Inventors: Yulong Hu, Yintian Zhang, Bo Zhu, Si Wei, Guoping Hu, Yu Hu, Qingfeng Liu
  • Patent number: 9564127
    Abstract: The present invention relates to a speech recognition method and system based on user personalized information. The method comprises the following steps: receiving a speech signal; decoding the speech signal according to a basic static decoding network to obtain a decoding path on each active node in the basic static decoding network, wherein the basic static decoding network is a decoding network associated with a basic name language model; if a decoding path enters a name node in the basic static decoding network, network extending is carried out on the name node according to an affiliated static decoding network of a user, wherein the affiliated static decoding network is a decoding network associated with a name language model of a particular user; and returning a recognition result after the decoding is completed. The recognition accuracy rate of user personalized information in continuous speech recognition may be raised by using the present invention.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 7, 2017
    Assignee: iFLYTEK Co., Ltd.
    Inventors: Qinghua Pan, Tingting He, Guoping Hu, Yu Hu, Qingfeng Liu
  • Patent number: 9330667
    Abstract: A method and system for endpoint automatic detection of audio record is provided. The method comprises the following steps: acquiring a audio record text and affirming the text endpoint acoustic model for the audio record text; starting acquiring the audio record data of each frame in turn from the audio record start frame in the audio record data; affirming the characteristics acoustic model of the decoding optimal path for the acquired current frame of the audio record data; comparing the characteristics acoustic model of the decoding optimal path acquired from the current frame of the audio record data with the endpoint acoustic model to determine if they are the same; if yes, updating a mute duration threshold with a second time threshold, wherein the second time threshold is less than a first time threshold. This method can improve the recognizing efficiency of the audio record endpoint.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 3, 2016
    Assignee: iFLYTEK Co., Ltd.
    Inventors: Si Wei, Guoping Hu, Yu Hu, Qingfeng Liu
  • Publication number: 20130197911
    Abstract: A method and system for endpoint automatic detection of audio record is provided. The method comprises the following steps: acquiring a audio record text and affirming the text endpoint acoustic model for the audio record text; starting acquiring the audio record data of each frame in turn from the audio record start frame in the audio record data; affirming the characteristics acoustic model of the decoding optimal path for the acquired current frame of the audio record data; comparing the characteristics acoustic model of the decoding optimal path acquired from the current frame of the audio record data with the endpoint acoustic model to determine if they are the same; if yes, updating a mute duration threshold with a second time threshold, wherein the second time threshold is less than a first time threshold. This method can improve the recognizing efficiency of the audio record endpoint.
    Type: Application
    Filed: October 29, 2010
    Publication date: August 1, 2013
    Applicant: Anhui Ustc Iflytek Co., Ltd.
    Inventors: Si Wei, Guoping Hu, Yu Hu, Qingfeng Liu