2025-02-282025-02-282022-12-16MATOS, Helder Mateus dos Reis. Um classificador supervisionado para relatos policiais no Estado do Pará. Orientador: Reginaldo Cordeiro dos Santos Filho. 2022. 68 f. Trabalho de Conclusão de Curso (Bacharelado em Ciência da Computação) – Faculdade de Computação, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, 2022. Disponível em:. Acesso em:.https://bdm.ufpa.br/jspui/handle/prefix/7758Public sectors are becoming more aware of the tendencies of data science and data mining applications, due to the exponential increase of its data volume over the recent years, the consequent and more frequent demand for hidden information in the massive amount of data generated daily, and the solutions offered by these fields of study over the automation and improvement of internal processes. Public security holds a huge potential of acquiring benefits from tools of automatic knowledge extraction on databases, including classification of text included on police records. This paper describes the development of a supervised classifier for police records, constructed upon knowledge extracted from police report public databases, in the years between 2019 and 2021, in the state of Pará, Brazil. Among the utilized techniques, it can be highlighted a data mining methodology based on CRISP-DM, Natural Language Processing, text sequence vectorization through word embeddings, and a deep learning model based on Convolutional Neural Networks. The model achieved an overall accuracy of approximately 78% for the prediction of 463 unique labels related to public safety. These labels include categories derived from the Brazilian legislation, such as murder, theft, robbery, rape, and threat, adding to labels specific to the policial environment, for instance death notice, death due to state officer intervention, and drug trafficking. The resulting model was used to improve the statistical processes of criminal analysts, both in quantitative and qualitative terms, through the deployment of a police record classification tool in the state of Pará, reducing the daily efforts of data processing and consolidation to at most 5 hours.Acesso AbertoMineração de dadosAprendizado de máquinaSegurança públicaData miningMachine learningPublic securityCNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAOTrabalho de Curso - Graduação - Monografia