Sentiment analysis using a lexicon-based approach in Lisbon, Portugal

• Tipo: Artigo em Revista Científica Internacional
• Data: 2025

Autores

Betco, I (Autor) Outra; Ribeiro, AI (Autor) FMUP; Vale, DS (Autor) Outra; Encalada-Abarca, L (Autor) Outra; Viana, CM (Autor) Outra; Rocha, J (Autor) Outra

Revista

Título: Geospatial health

Vol. 20

ISSN: 1827-1987

Editora: University of Naples Federico II

Indexação

ISI Web of Knowledge - 0 Citações

Outras Informações

ID Authenticus: P-018-NWH

DOI: 10.4081/gh.2025.1344

Abstract (EN): Advances in digital sensors and Information flow have created an abundance of data generated by users under various emotional states in different situations. Although this opens up a new facet in spatial research, the large amount of data makes it difficult to analyze and obtain complete and comprehensive information leading to an increase in the demand for sentiment analysis. In this study, the Canadian National Research Council (NRC) of Sentiment and Emotion Lexicon (EmoLex) was used, based on data from the social network Twitter (now X), thus enabling the identification of the places in Lisbon where both positive and negative sentiment prevails. From the results obtained, the Portuguese are happy in spaces associated with leisure and consumption, such as museums, event venues, gardens, shopping centres, stores, and restaurants. The high score of words associated with negative sentiment have more bias, since the lexicon sometimes has difficulties to identify the context in which the word appears, ending up giving it a negative score (e.g., war, terminal).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11