confusion about the CNNC model

[wyvern114]

Hello！
your work about CNNC was magnificent, but I was an amateur about deep learning. So I was confused about the input file of CNNC, I performed scRNA-seq on my sample and got several genes want to check theirs relationship, so I have the expression profile as input, but what is the gene-pair candidate list? It is a gene pair list with certain relationship that learn from previous study？