Patent ID: 11860608
Assignee: QILU UNIVERSITY OF TECHNOLOGY
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The industrial equipment operation, maintenance and optimization method according to claim 1, wherein a method for calculating a Spearman correlation coefficient between data V0 and V1 of two sensors is:
sorting the data V0 and V1 ccording to a data size, to obtain data sets V0* and V1*, creating a new column xi=[1,2,3, . . . , n] to assign data of V0* a level value, and creating a new column yi=[1,2,3, . . . , n] to assign data of V1* a level value, wherein
the Spearman correlation coefficient between V0 and V1 is:, ρ
    
     0
     -
     1
    
   
   =
   
    1
    -
    
     
      6
      ⁢
      
       (
       
        
         d
         1
         2
        
        +
        
         d
         2
         2
        
        +
        …
        +
        
         d
         n
         2
        
       
       )
      
     
     
      n
      ⁡
      (
      
       
        n
        2
       
       -
       1
      
      )
     
    
   
  
  ,
  wherein
 

 
  
   d
   i
   2
  
  =
  
   
    
     (
     
      
       x
       i
      
      -
      
       y
       i
      
     
     )
    
    2
   
   .