Model Note that we simply denote π(D, S) by π(S) as it is not ambiguous which document collection is used when S is a summary of D. In order to be able to use an exact and efficient solver like ILP, we constrain π to be a linear function.
we look for π of the following form: Two functions are jointly learned: f θ is a function scoring individual sentences, and g γ is a function scoring the intersection of sentences.