Abstract
This paper presents the algorithm Polarity Recognizer in Portuguese (PIRPO) to classify sentiment in online reviews. PIRPO was constructed to identify polarity in Portuguese user generated accommodation reviews. Each review is analysed according to concepts from a domain ontology. We decompose the review in sentences in order to assign a polarity to each concept of the ontology in the sentence. Preliminary results indicate an average F-score of 0.32 for polarity recognition.
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Chaves, M.S., de Freitas, L.A., Souza, M., Vieira, R. (2012). PIRPO: An Algorithm to Deal with Polarity in Portuguese Online Reviews from the Accommodation Sector. In: Bouma, G., Ittoo, A., Métais, E., Wortmann, H. (eds) Natural Language Processing and Information Systems. NLDB 2012. Lecture Notes in Computer Science, vol 7337. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31178-9_37
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DOI: https://doi.org/10.1007/978-3-642-31178-9_37
Publisher Name: Springer, Berlin, Heidelberg
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