Interpretabilidade de modelos de aprendizado de máquina: uma abordagem baseada em árvores de decisão

• Autor(a) principal: Silva, Jurandir Junior de Deus da
• Data de Publicação: 2023
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/13113
• topic: Aprendizado de máquina; Interpretabilidade; Árvores de decisão; Explicação contrafactual; Machine learning; Interpretability; Decision trees; Counterfactual explanation; CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO

Interpretability is defined as the ability of a human to understand why an AI model makes certain decisions. Interpretability can be achieved through the use of interpretable models, such as linear regression and decision trees, and through model-agnostic interpretation methods, which treat any predictive model as a "black box". Another concept related to interpretability is that of Counterfactual Explanations, which show the minimal changes in inputs that would lead to different results, providing a deeper understanding of the model’s decisions. The approach proposed in this work exploits the explanatory power of Decision Trees to create a method that offers more concise explanations and counterfactual explanations. The results of the study indicate that Decision Trees not only explain the “why” of model decisions, but also show how different attribute values could result in alternative outputs.