Ronaldo Agra

A tree-organized chatbot proposal to provide a single digital channel to access specific chatbots in a real Brazilian digital government environment

2023

The use of chatbots, or conversational assistants, is increasingly present in several areas of activity. In the governmental sphere, the use of these solutions provides the improvement of the provision of public services, as well …

A comparative analysis between undersampling and oversampling approaches to data balancing

2023

The constant increase in fraudulent operations in credit card transactions has led financial institutions to prioritize the use of machine learning models in fraud detection. Challenging task due to the large volume of data and …