Some doubt about the mathematical symbols in the paper bi-att-flow

[alice-cool]

Dear scholar, I have doubts about one mathematical symbol in your classical paper "bi-att-flow". In the paper ,you said the dimension of similar matrix S is T times J. But in the Query-to-context Attention. Query-to-context (Q2C) on top of page 4, b = softmax(maxcol(S)) , of which the number of column is J and it can't get T. So maybe replace it with maxrow of S. I am not sure about my doubts. If you have time to reply it, I will be very glad.