Query Sensitive History Summariser: The history of the prober and responder are passed through a BiGRU to get context sensitive vectors h P j ∈ R 2d and h R k ∈ R 2d for j ∈ [J] and k ∈ [K].
for our simple attention model, the average conicity of the vectors h R and h P , when computed in a similar fashion as mentioned above were generally high (about 0.8) (see Table 6).