DEEB-RNN1/2/3 means they uses the gold attention signals as supervision information.
dEEB-RNN1 uses only the gold word-level attention signal (λ = 1 and µ = 0), dEEB-RNN2 uses only the gold sentence-level attention signal (λ = 0 and µ = 1), whilst dEEB-RNN3 employs the gold attention signals at both word and sen-  tence levels (λ = 1 and µ = 1).