Adjacency matrix of expert opinions in fresh food e-commerce

By asking the following questions so that the experts make a practical judgment.(1) Are there any inappropriate factors that need to be deleted?(2) Is the expression of the influencing factors accurate and easy to understand? If not, how should I modify it? (1) Are there synonymous or repetitive factors? If so, which should be integrated?(2) Which factors influence the LMD of fresh food e-commerce during COVID-19? Why?(3) In addition to the factors listed in the paper, are there any other important factors that need to be added?In the adjacency matrix, the interrelation between two factors can be qualitatively transformed to 1 or 0. The relationship between every two factors can be divided into four categories:(1) when factor a has a direct impact on factor b, but factor b has no direct impact on factor a, (a, b), and (b, a) in the adjacency matrix become 1 and 0, respectively.(2) When factor A has no direct effect on factor B, while factor B has a direct impact on factor A, (A, b) and (b, a) in the adjacency matrix become 0 and 1, respectively.(3) When there is no relationship between factors A and B, and the change of one factor does not affect the other, the entries (A, b) and (b, a) in the adjacency matrix become 0.(4) When factor A has a direct impact on factor B, entries (a, b) and (b, a) in the adjacency matrix become 1.