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Title:
PROCESS PARAMETER ROOT CAUSE POSITIONING METHOD AND RELATED DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/045305
Kind Code:
A1
Abstract:
A process parameter root cause positioning method and a related device. The method comprises: separately dividing a process parameter and a sample output time into multiple subintervals to obtain a plurality of first subintervals and a plurality of second subintervals (step 201); for each first subinterval and each second subinterval, determining the median of each first subinterval to generate first parameter data and determining the median of each second subinterval to generate first time data (step 202); after performing first processing on a sample label and the first parameter data, obtain a correlation coefficient of parameter trend fluctuation (step 203); performing second processing on the sample label, process parameter data and the first time data to obtain a correlation coefficient of parameter time series trend fluctuation (step 204); and on the basis of the correlation coefficient of parameter trend fluctuation and the correlation coefficient of parameter time series trend fluctuation, performing a calculation to obtain a process parameter comprehensive index (step 205). The correlation analysis between parameter trend fluctuation, parameter time series trend fluctuation and label fluctuation is taken into consideration, thereby effectively recognizing the suspicious parameter.

Inventors:
FANG YUKE (CN)
XUE XIAOMING (CN)
SUN CHONGJING (CN)
Application Number:
PCT/CN2022/086785
Publication Date:
March 30, 2023
Filing Date:
April 14, 2022
Export Citation:
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Assignee:
CHENGDU UNION BIG DATA TECH INCORPORATED (CN)
International Classes:
G05B19/418
Foreign References:
CN113552856A2021-10-26
CN111159645A2020-05-15
CN112269818A2021-01-26
CN109711659A2019-05-03
EP3705959A12020-09-09
Other References:
XIAO, KAIFA: "The Key Techniques of Root Causes Location in Multi-dimensional Time Series Data", CHINA MASTER’S THESES FULL-TEXT DATABASE (MASTER) INFORMATION & TECHNOLOGY, no. 02, 1 April 2020 (2020-04-01), CN, pages 1 - 55, XP009545062, DOI: 10.26991/d.cnki.gdllu.2020.002071
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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