For example, the creator of the startup Timeline says that it initially took a multiperson team a full work day to create a single timeline.
1 automatic timeline summarization (TLS) has emerged as an NLP task in the past few years (Tran et al., 2013a;Kessler et al., 2012;Nguyen et al., 2014;Yan et al., 2011b;Yan et al., 2011a;Wang et al., 2012;Tran et al., 2013b;Tran et al., 2015).