Abstract
In neighborhood rough set theory, attribute reduction based on measure of information has important application significance. The influence of different decision classes was not considered for calculation of traditional conditional neighborhood entropy, and the improvement of algorithm based on conditional neighborhood entropy mainly includes of introducing multi granularity and different levels, while the mutual influence between samples with different labels is less considered. To solve this problem, this paper uses the supervised strategy to improve the conditional neighborhood entropy of three-layer granulation. By using two different neighborhood radii to adjust the mutual influence degree of different label samples, and by considering the mutual influence between conditional attributes through the feature complementary relationship, a neighborhood rough set attribute reduction algorithm based on supervised granulation is proposed. Experiment results on UCI data sets show that the proposed algorithm is superior to the traditional conditional neighborhood entropy algorithm in both aspects of reduction rate and reduction accuracy. Finally, the proposed algorithm is applied to the evaluation of fatigue life influencing factors of titanium alloy welded joints. The results of coupling relationship analysis show that the effect of joint type should be most seriously considered in the calculation of stress concentration factor. The results of influencing factors analysis show that the stress range has the highest weight among all the fatigue life influencing factors of titanium alloy welded joint.
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Funding
This work was supported in part by the National Science Foundation of China under Grant 52005071 and 51875072, in part by the Liaoning Provincial Educational Department Project under Grant JDL2020004, and in part by the Liaoning Province "Xingliao Talent Program" project for young top talents under Grant XLYC1807112.
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Zou, L., Ren, S., Sun, Y. et al. Attribute reduction algorithm of neighborhood rough set based on supervised granulation and its application. Soft Comput 27, 1565–1582 (2023). https://doi.org/10.1007/s00500-022-07454-5
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DOI: https://doi.org/10.1007/s00500-022-07454-5