Avaliação do Impacto de Estratégias de Pré-processamento de Sequências de Eventos de Aprendizagem em Algoritmos de Mineração de Padrões Sequenciais

Resumo


Dados relativos a eventos de aprendizagem, quando contêm atributos temporais, permitem analisar a aprendizagem de fato como um processo ao longo do tempo utilizando, por exemplo, algoritmos de Mineração de Padrões Sequenciais (Sequential Pattern Mining - SPM). No entanto, são escassos na literatura atual trabalhos que avaliam o impacto de estratégias de pré-processamento destas sequências de eventos nos padrões identificados pelos algoritmos. Este estudo investiga o impacto de três estratégias de pré-processamento propostas na literatura nos padrões identificados pelo algoritmo PrefixSpan, utilizando uma base de dados real de cursos à distância oferecidos na plataforma Moodle. Os resultados foram analisados de forma quantitativa e qualitativa e sugerem que a estratégia “Coalescing Repeating Point Events into One” teve o maior impacto na remoção de ruídos, embora o uso conjunto das três estratégias contribuiu para melhorar a qualidade dos padrões detectados.

Palavras-chave: aprendizagem, sequências de eventos, mineração de padrões sequenciais, pré-processamento

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Publicado
04/11/2024
SILVA, José Thiago Torres da; SILVA, Júlio César Roque da; ENDO, Patricia Takako; DOURADO, Raphael A.. Avaliação do Impacto de Estratégias de Pré-processamento de Sequências de Eventos de Aprendizagem em Algoritmos de Mineração de Padrões Sequenciais. In: SIMPÓSIO BRASILEIRO DE INFORMÁTICA NA EDUCAÇÃO (SBIE), 35. , 2024, Rio de Janeiro/RJ. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2024 . p. 1984-1998. DOI: https://doi.org/10.5753/sbie.2024.242734.