For example, it is often the case that a Yes-No-Question is followed by Reply y or Reply n. To reflect this observation, we create another model, denoted wDA2DA, that has an additional direct connection between the previous DA and the current DA.
equation 8 becomes equation 13: e o e o (y t−1 )+b b b (out) )   As seen in Tables 4 and 5, wDA2DA performs much worse than HA-RNN.