As a fine-grained sentiment analysis task, Aspect Sentiment Classification (ASC) aims to predict sentiment polarities (e.g., positive, negative, neutral) towards given particular aspects from a text and has been drawing more and more interests in natural language processing and computational linguistics over the past few years (Jiang et al., 2011;Tang et al., 2016b;.
most of the existing studies on ASC focus on individual non-interactive reviews, such as customer reviews (Pontiki et al., 2014) and tweets (Mitchell et al., 2013;Vo and Zhang, 2015;Dong et al., 2014).