GerModel: Gestão de Modelos em Dados em Fluxo com Conceitos Recorrentes
Resumo
Fluxos meteorológicos de alta frequência apresentam não estacionariedade e concept drift recorrente, o que dificulta a manutenção de modelos preditivos. Este trabalho formula esse cenário como um problema de gestão de modelos em fluxo, no qual se decide entre retreinamento completo e reutilização de modelos históricos. Para isso, apresenta-se a GerModel, uma abordagem preliminar baseada no Population Stability Index (PSI) para selecionar e reutilizar modelos históricos em previsão horária de precipitação. A avaliação usa dados do aeroporto de Miami entre 2001 e 2025, com processamento mensal, e compara a GerModel com o retreinamento completo após mudança. No cenário avaliado, os resultados sustentam que a abordagem pode constituir alternativa viável, com F1 competitivo, alto reuso e menor custo computacional.
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