Combinar análise de sentimento e conteúdo para explicar emoções subtis em avaliações online de clientes de ginásios
DOI:
https://doi.org/10.47197/retos.v78.118658Palavras-chave:
Emoções, condicionamento físico, aprendizagem de máquina, avaliações online, classificação por estrelasResumo
Introdução: As emoções geradas pelos serviços influenciam a satisfação e a experiência do cliente. As avaliações online permitem identificar estes padrões emocionais através de técnicas de análise de texto.
Objectivo: Examinar como a relevância temática e o sentimento presentes nas avaliações digitais predizem emoções específicas dos utilizadores de ginásios, propondo uma abordagem baseada em “temas polarizados”.
Metodologia: Foram recolhidas 3.250 avaliações de 38 academias espanholas. O estudo aplicou uma abordagem de métodos mistos que combinava a modelação temática utilizando LDA, análise de sentimentos com TextBlob e algoritmos de aprendizagem automática (XGBoost), integrados com técnicas de explicabilidade SHAP. A interação entre temas e polaridade do sentimento foi utilizada para prever dez emoções específicas, como a alegria, a raiva, a tristeza e a confiança.
Resultados: A cordialidade da equipa, o custo-benefício e a higiene surgiram como temas particularmente preditivos. As avaliações positivas relacionadas com a equipa aumentaram emoções como a alegria e a confiança, enquanto os comentários sobre as ausências relacionadas com a COVID-19 foram associados a níveis mais elevados de raiva e tristeza. A abordagem dos “temas polarizados” gerou uma classificação emocional robusta, alcançando pontuações F1 acima de 0,84 para a maioria das emoções.
Discussão: Os resultados mostram que a combinação de modelação temática, análise de sentimentos e técnicas explicáveis permite a identificação precisa de quais os aspetos do serviço que desencadeiam emoções específicas, fornecendo uma estrutura interpretativa útil para os gestores do setor do fitness.
Conclusões: O método proposto constitui uma abordagem escalável e transparente para prever emoções discretas em avaliações. A sua aplicação pode melhorar o design de serviços e o alinhamento emocional em organizações orientadas para o bem-estar.
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Direitos de Autor (c) 2026 Enrique Alcántara Alcover, Antonio Hernández Martín, Ricardo Cuevas Campos, Daniel Duclos Bastías

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