“…Prior studies have developed various opinion mining methods for this purpose using natural language processing or text mining techniques (Cambria, Schuller, Xia, & Havasi, 2013;Dai et al, 2015;Hu & Liu, 2004;Popescu & Etzioni, 2007;Wei, Chen, Yang, & Yang, 2010;Xu, Cheng, Tan, Liu, & Shen, 2013;Yan et al, 2015). Because we aim to measure aggregate consumer preferences from online product reviews, developing a new product feature extraction method is not the main focus of our study; instead, we employ and extend existing methods to support our product feature extraction.…”