MISLA²: A System to Information Retrieval in Labour Lawsuits using Legal Ontologies and Regular Expressions

  • Cleyton M. O. Rodrigues UPE
  • Bruno J. T. Fernandes UPE
  • Leandro H. S. Silva UPE
  • David J. Barrientos UPE
  • Allana L. S. Rocha UPE
  • Paulo Christiano Sobral NeuroLaw Desenvolvimento de Tecnologia
  • Bruno Souza NeuroLaw Desenvolvimento de Tecnologia
  • Dionizio Feitosa NeuroLaw Desenvolvimento de Tecnologia
  • Mabel Guimarães NeuroLaw Desenvolvimento de Tecnologia
  • Juliana Barreto NeuroLaw Desenvolvimento de Tecnologia


Electronic Legal Proceedings are a worldwide legal phenomena, allowing the use of computerized systems for the creation and monitoring of procedural acts in the most diverse legal bodies. On one hand, it allows greater transparency in the conduct of procedural acts, on the other, it has contributed to the bottleneck of open but unresolved lawsuits each year. Nowadays, Information Retrieval to automate the processing of these procedural objects is at the forefront of computer systems for Law. In this study, we present MISLA2, a system to retrieve orders and preliminaries from judicial labour sentences through ontological models built from previous cases. Instead of tied and difficult-to-maintain domain specification models, we demonstrate how light ontologies, in conjunction with regular expressions for extracting significant portions of the text, can achieve the desired results. In addition, empirical experiments carried out with real labour lawsuits evidence that results are quite promising.


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RODRIGUES, Cleyton M. O. et al. MISLA²: A System to Information Retrieval in Labour Lawsuits using Legal Ontologies and Regular Expressions. In: ENCONTRO NACIONAL DE INTELIGÊNCIA ARTIFICIAL E COMPUTACIONAL (ENIAC), 18. , 2021, Evento Online. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2021 . p. 362-373. DOI: https://doi.org/10.5753/eniac.2021.18267.