Journal
JOURNAL OF INFORMATION SCIENCE
Volume 47, Issue 3, Pages 387-403Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0165551520910032
Keywords
Adaptive instance-based learning; ensemble learning; lasso regression; semisupervised learning; sentiment analysis; word2vec
Funding
- Ministry of Education of the Republic of Korea
- National Research Foundation of Korea [NRF-2018S1A3A2075114]
- National Research Foundation of Korea [4299990613873] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
This article proposes a semi-supervised approach to sentiment analysis that can be trained with only a small amount of labeled data, and through two experiments, it demonstrates that the performance of this method is comparable to that of supervised learning models trained on large datasets.
Sentiment analysis plays an important role in understanding individual opinions expressed in websites such as social media and product review sites. The common approaches to sentiment analysis use the sentiments carried by words that express opinions and are based on either supervised or unsupervised learning techniques. The unsupervised learning approach builds a word-sentiment dictionary, but it requires lengthy time periods and high costs to build a reliable dictionary. The supervised learning approach uses machine learning models to learn the sentiment scores of words; however, training a classifier model requires large amounts of labelled text data to achieve a good performance. In this article, we propose a semisupervised approach that performs well despite having only small amounts of labelled data available for training. The proposed method builds a base sentiment dictionary from a small training dataset using a lasso-based ensemble model with minimal human effort. The scores of words not in the training dataset are estimated using an adaptive instance-based learning model. In a pretrained word2vec model space, the sentiment values of the words in the dictionary are propagated to the words that did not exist in the training dataset. Through two experiments, we demonstrate that the performance of the proposed method is comparable to that of supervised learning models trained on large datasets.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available