Several methods have been used in order to select the summary sentences ranging from binary classifiers (Kupiec et al., 1995), to hidden Markov models (Conroy and O'Leary, 2001), graph-based algorithms (Erkan and Radev, 2004;Mihalcea, 2005), and integer linear programming (Woodsend and Lapata, 2010).
similar neural attention architectures have been previously used for geometry reasoning , under the name Pointer Networks.