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17.04.2021 | Review Article

Clustering of Brazilian legal judgments about failures in air transport service: an evaluation of different approaches

verfasst von: Isabela Cristina Sabo, Thiago Raulino Dal Pont, Pablo Ernesto Vigneaux Wilton, Aires José Rover, Jomi Fred Hübner

Erschienen in: Artificial Intelligence and Law | Ausgabe 1/2022

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Abstract

The paper presents different clustering approaches in legal judgments from the Special Civil Court located at the Federal University of Santa Catarina (JEC/UFSC). The subject is Consumer Law, specifically cases in which consumers claim moral and material compensation from airlines for service failures. To identify patterns from the dataset, we apply four types of clustering algorithms: Hierarchical and Lingo (soft clustering), K-means and Affinity Propagation (hard clustering). We evaluate the results based on the following criteria: (1) entropy and purity; (2) algorithm's ability in providing labels; (3) legal expert’s evaluation; and (4) experimental complexity. The results demonstrate that the most advantageous approach is Hierarchical Clustering, since it has the best entropy and purity numbers, as well as the least difficulty for the expert to analyze the clusters, and the least experimental complexity. The main contribution of the paper is to show the advantages and disadvantages of each approach, especially to identify labels in unstructured and non-indexed legal texts.

Vorheriger Artikel Correction to: A review of predictive policing from the perspective of fairness

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Data available at request. Code is available at https://github.com/thiagordp/clustering_jec

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Titel: Clustering of Brazilian legal judgments about failures in air transport service: an evaluation of different approaches
verfasst von: Isabela Cristina Sabo
Thiago Raulino Dal Pont
Pablo Ernesto Vigneaux Wilton
Aires José Rover
Jomi Fred Hübner
Publikationsdatum: 17.04.2021
Verlag: Springer Netherlands
Erschienen in: Artificial Intelligence and Law / Ausgabe 1/2022
Print ISSN: 0924-8463
Elektronische ISSN: 1572-8382
DOI: https://doi.org/10.1007/s10506-021-09287-3

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