CONF Pappas_SocialNLP@EMNLP_2016/IDIAP Human versus Machine Attention in Document Classification: A Dataset with Crowdsourced Annotations Pappas, Nikolaos Popescu-Belis, Andrei aspect-based sentiment analysis attention mechanism Text classification Proceedings of the EMNLP 2016 Workshop on Natural Language Processing for Social Media Austin, USA 2016