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psda: A tool for extracting knowledge from symbolic data with an application in Brazilian educational data

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Abstract

Symbolic polygonal data analysis is a new type of framework to extract valuable knowledge from a new structure of data using regular polygon built from data in class, big data, and complex data. This paper introduces a toolbox for symbolic polygonal data, named psda, that contains the main descriptive measures for this type of variable, e.g., mean, variance, correlation, and a polygonal linear regression model (plr). It is applied at the Brazilian Basic Education Assessment System (SAEB), giving a new perspective to the managers of the counties to realize the public policy in the Brazilian educational system. The hypothesis test showed that the polygonal linear regression model presented the best performance compared to some symbolic interval regression models in the SAEB application.

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Acknowledgements

This work was supported by the Brazilian sources FACEPE, Brazil, and CNPq, Brazil. The authors are grateful to the reviewers and associate editor for their helpful comments and suggestions. Funding was provided by Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (Grant No. IBPG-1185-1.03/16) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (Grant Nos. 302767/2018-5, 304775/2018-5).

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Correspondence to Renata M. C. R. Souza.

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The authors declare that they have no conflict of interest.

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Communicated by V. Loia.

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Appendix

Appendix

This section details all results obtained in SAEB 2017 application from psda.

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Silva, W.J.F., Souza, R.M.C.R. & Cysneiros, F.J.A. psda: A tool for extracting knowledge from symbolic data with an application in Brazilian educational data. Soft Comput 25, 1803–1819 (2021). https://doi.org/10.1007/s00500-020-05252-5

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  • DOI: https://doi.org/10.1007/s00500-020-05252-5

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