Abstract
Three-way decisions, as a better way than two-way decisions, has played an important role in many fields. As an extension of semiconcept, preconcept constitutes a new approach for data analysis. In contrast to preconcept, formal concept or semiconcept is too conservative about dealing with data. Hence, we want to further apply three-way decisions to preconcept. In this work, we introduce three-way preconcept by an example. This new notion combines preconcept with the assistant of three-way decisions. After that, we attain a generalized double Boolean algebra consisting of three-way preconcept. Furthermore, we give two form operators, approximation operators from lattice and set equivalence relation approximation operators, respectively. Finally, we present a conclusion with some summary and future issues that need to be addressed.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (61572011), the Natural Science Foundation of Hebei Province (A201820117), Hebei Graduate Innovation Project (CXZZSS2020004).
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This work is supported by the National Natural Science Foundation of China (61572011), the Natural Science Foundation of Hebei Province (A201820117), Hebei Graduate Innovation Innovation Project (CXZZSS2020004).
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Mao, H., Cheng, Y. & Liu, X. Three-way preconcept and two forms of approximation operators. Soft Comput 27, 855–865 (2023). https://doi.org/10.1007/s00500-022-07532-8
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DOI: https://doi.org/10.1007/s00500-022-07532-8