Opinion Mining in Latvian Text Using Semantic Polarity Analysis and Machine Learning Approach | Zendy

Gatis Špats | Zendy; Ilze Birzniece | Zendy

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Opinion Mining in Latvian Text Using Semantic Polarity Analysis and Machine Learning Approach

Author(s) -

Gatis Špats,

Ilze Birzniece

Publication year - 2016

Publication title -

complex systems informatics and modeling quarterly

Language(s) - English

Resource type - Journals

ISSN - 2255-9922

DOI - 10.7250/csimq.2016-7.03

Subject(s) - latvian , sentiment analysis , computer science , lexicon , artificial intelligence , natural language processing , naive bayes classifier , classifier (uml) , machine learning , bootstrapping (finance) , support vector machine , polarity (international relations) , information retrieval , linguistics , mathematics , philosophy , econometrics , genetics , biology , cell

In this paper we demonstrate approaches for opinion mining in Latvian text. Authors have applied, combined and extended results of several previous studies and public resources to perform opinion mining in Latvian text using two approaches, namely, semantic polarity analysis and machine learning. One of the most significant constraints that make application of opinion mining for written content classification in Latvian text challenging is the limited publicly available text corpora for classifier training. We have joined several sources and created a publically available extended lexicon. Our results are comparable to or outperform current achievements in opinion mining in Latvian. Experiments show that lexicon-based methods provide more accurate opinion mining than the application of Naive Bayes machine learning classifier on Latvian tweets. Methods used during this study could be further extended using human annotators, unsupervised machine learning and bootstrapping to create larger corpora of classified text.

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