Each y j classifier decides if relation j holds for the given entity tuple, using the mention-level classifications as input.
in the figure: • n is the number of distinct entity tuples in D; • M i is the set of mentions for the ith entity pair; • x is a sentence and z is the latent relation classification for that sentence; • w z is the weight vector for the multi-class mention-level classifier; • k is the number of known relation labels in L; • y j is the top-level classification decision for the entity pair as to whether the jth relation holds; • w j is the weight vector for the binary top-level classifier for the jth relation.