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Semantic Features for Optimizing Supervised Approach of Sentiment Analysis on Product Reviews

1
Department of Informatics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
2
Department of Electrical Engineering, Universitas Muhammadiyah Jember, Jember 68124, Indonesia
*
Author to whom correspondence should be addressed.
Computers 2019, 8(3), 55; https://doi.org/10.3390/computers8030055
Received: 26 June 2019 / Revised: 15 July 2019 / Accepted: 16 July 2019 / Published: 19 July 2019
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Abstract

The growth of ecommerce has triggered online reviews as a rich source of product information. Revealing consumer sentiment from the reviews through Sentiment Analysis (SA) is an important task of online product review analysis. Two popular approaches of SA are the supervised approach and the lexicon-based approach. In supervised approach, the employed machine learning (ML) algorithm is not the only one to influence the results of SA. The utilized text features also handle an important role in determining the performance of SA tasks. In this regard, we proposed a method to extract text features that takes into account semantic of words. We argue that this semantic feature is capable of augmenting the results of supervised SA tasks compared to commonly utilized features, i.e., bag-of-words (BoW). To extract the features, we assigned the correct sense of the word in reviewing the sentence by adopting a Word Sense Disambiguation (WSD) technique. Several WordNet similarity algorithms were involved, and correct sentiment values were assigned to words. Accordingly, we generated text features for product review documents. To evaluate the performance of our text features in the supervised approach, we conducted experiments using several ML algorithms and feature selection methods. The results of the experiments using 10-fold cross-validation indicated that our proposed semantic features favorably increased the performance of SA by 10.9%, 9.2%, and 10.6% of precision, recall, and F-Measure, respectively, compared with baseline methods. View Full-Text
Keywords: sentiment analysis; product reviews; machine learning sentiment analysis; product reviews; machine learning
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Setya Rintyarna, B.; Sarno, R.; Fatichah, C. Semantic Features for Optimizing Supervised Approach of Sentiment Analysis on Product Reviews. Computers 2019, 8, 55.

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