Multi-Level Sentiment Analysis of PolEmo 2.0: Extended Corpus of Multi-Domain Consumer Reviews
Jan Kocoń, Piotr Miłkowski, Monika Zaśko-Zielińska · 2019
In this article we present an extended version of PolEmo -a corpus of consumer reviews from 4 domains: medicine, hotels, products and school.Current version (PolEmo 2.0) contains 8,216 reviews having 57,466 sentences.Each text and sentence was manually annotated with sentiment in 2+1 scheme, which gives a total of 197,046 annotations.We obtained a high value of Positive Specific Agreement, which is 0.91 for texts and 0.88 for sentences.PolEmo 2.0 is publicly available under a Creative Commons copyright license.We explored recent deep learning approaches for the recognition of sentiment, such as Bidirectional Long Short-Term Memory (BiL-STM) and Bidirectional Encoder Representations from Transformers (BERT).