To read the full version of this content please select one of the options below:

Contrast and conditional polarity rule (CCPR) for detection of positivity and negativity in opinionated sentence with indirect polarity

Keng Hoon Gan (School of Computer Sciences, Universiti Sains Malaysia , Penang, Malaysia)
Noeurn Krol (School of Computer Sciences, Universiti Sains Malaysia , Penang, Malaysia)

International Journal of Web Information Systems

ISSN: 1744-0084

Article publication date: 8 February 2021

Issue publication date: 30 April 2021

Downloads
47

Abstract

Purpose

Customer reviews are one important source that contains valuable information for quality evaluation of products or services. Review sentences contain sentiment words that show whether a user’s opinion is positive or negative. When review sentence has mix opinions, having sentiment words of both polarities, it is difficult to conclude whether it is positive or negative opinion. The purpose of this study is to improve the detection of polarity in such situation.

Design methodology approach

In this research, methods such as part-of-speech tagging, polarity analysis and rules selection are used to identify the polarity. A set of rules called contrast and conditional polarity rules (CCPR) has been created to improve the polarity detection in cases when there is mixture of sentiment words used in contrast and conditional type of review sentences. The experiment is conducted with data sets from three domains, i.e. restaurant, electronic and Tripadvisor.

Findings

The experimental result confirms that CCPR rules have higher baseline of the polarity aggression. In restaurant domain, CCPR rules (62.07%) have increased 13.79% compared with the Pol_Agg_MPQA baseline (48.28%) and 13.79% compared with Pol_Agg_Senti baseline (48.28%). In electronic domain, CCPR rule (79.17%) is higher by 12.50% compared with the Pol_Agg_MPQA baseline (66.67%) and 16.67% compared with Pol_Agg_Senti baseline (62.50%). Another one, CCPR rule (70.83%) is higher by 8.33% compared with the Pol_Agg_MPQA baseline (62.50%) and 12.50% compared with Pol_Agg_Senti baseline (58.33%). In conclusion, result of experiment shows promising outcome with improvement in detecting the positivity and negativity of indirect sentence, especially for the case of sentence with indirect polarity.

Originality value

To address the problem of mix opinions in terms of polarities, this paper presents a rule-based approach to improve the result of identifying positivity and negativity in sentence with indirect polarities.

Keywords

Acknowledgements

Funding: This research is supported by Fundamental Research Grant Scheme (FRGS), Ministry of Education Malaysia (MOE) under the project code, FRGS/1/2018/ICT02/USM/02/9 and title, Automated Big Data Annotation for Training Semi-Supervised Deep Learning Model in Sentiment Classification.

Citation

Gan, K.H. and Krol, N. (2021), "Contrast and conditional polarity rule (CCPR) for detection of positivity and negativity in opinionated sentence with indirect polarity", International Journal of Web Information Systems, Vol. 17 No. 2, pp. 65-83. https://doi.org/10.1108/IJWIS-05-2020-0029

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited