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The CBP-JMF approach modified from figure in ref. 84. 
; β and ω represent the importance of the Laplacian regularization of the graph and the weight constraint 
, respectively. V is divided into 
and 
according to input data; L and UL mean ‘labeled’ and ‘unlabeled’ samples, respectively. 
(
) and 
(
) are Laplacian matrices of 
and 
, respectively.
