Supplementary Material Twitter Opinion Topic Model: Extracting Product Opinions from Tweets by Leveraging Hashtags and Sentiment Lexicon

The intuition behind this representation is as follows: in each restaurant, each customer is allocated a table to sit at, and each table serves only one dish. Hence, customers (words) who are on the same table share the same dish (topic). This is similar to the ‘counts’ in LDA, albeit complicated by the fact that different tables can serve the same dish. Moreover, a table in a restaurant is treated as a customer in its parent restaurant.