“…Other times, ready-made lexical dictionaries like General Inquiry (Stone, Dunphy, Smith, & Ogilvie, 1966) or SentiWordNet (SWN) (Esuli & Sebastiani, 2006) are used, although some studies report that these are less effective than lexicons extracted from the test data collection itself (Andreevskaia & Bergler, 2006;. While many approaches use individual words for processing semantic information, some approaches use natural language processing techniques that consider not only the word but the entire sentence (Agarwal et al, 2011;Castro-Espinoza, Gelbukh, & González-Mendoza, 2013;Liu et al, 2016;Tang, Tan, & Cheng, 2009;Thelwall, Buckley, & Paltoglou, 2012;Thelwall, Buckley, Paltoglou, Cai, & Kappas, 2010). These approaches are typically based on the presence or absence of a subjective term in a document, and do not incorporate the frequency of the subjective term in question.…”