Since its first use for machine translation (Kalchbrenner and Blunsom, 2013;Cho et al., 2014;Sutskever et al., 2014), the encoder-decoder approach has demonstrated great success in many other sequence generation tasks including image caption generation (Vinyals et al., 2015b;Xu et al., 2015), parsing (Vinyals et al., 2015a), dialogue response generation (Li et al., 2016a;Serban et al., 2016) and sentence summarization (Rush et al., 2015;Chopra et al., 2016).
in this paper we focus on sentence summarization, which as its name suggests, consists of generating shorter versions of sentences for applications such as document summarization (Nenkova and McKeown, 2011) or headline generation (Dorr et al., 2003).