Therefore, at each position i of the sequence, we obtain two s- Then we concatenate them to get the intermediate state, After that, we sum up the sequence states to get the representations of Arg-1 and Arg-2 respectively as follows: Finally we concatenate the two argument representations R Arg 1 and R Arg 2 as the argument pair representation, i.e., Clearly, in this way, there is no any correlation and interaction between the two arguments.
whatever the types of discourse relationship they hold, the argument pair representation R pair is independent from R Arg 1 or R Arg 2 .