Patent ID: 11868432
Assignee: SICHUAN UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. The method for extracting the kansei adjective of the product based on PCA-E according to claim 5, wherein step S24 further comprises: calculating the cumulative contribution rate after projection in the principal component direction:, θ
      =
      
       
        (
        
         
          
           ∑
            
          
          
           i
           =
           1
          
          f
         
         ⁢
         
          λ
          i
         
        
        )
       
       /
       
        (
        
         
          
           ∑
            
          
          
           i
           =
           1
          
          n
         
         ⁢
         
          λ
          i
         
        
        )
       
      
     
     ,
     and
    
   
   
    
     (
     4
     )
    
   
  
 

extracting, according to the set first threshold, the first f eigenvectors to form an eigenvector matrix P′, P′=[P1, P2, . . . , Pf], f<n.