Journal
INFORMATION SCIENCES
Volume 618, Issue -, Pages 434-467Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ins.2022.10.133
Keywords
Fuzzy neighborhood rough sets; Feature selection; Uncertainty measurement; Hierarchical fusion; Exponential optimization; Granulation nonmonotonicity
Categories
Funding
- National Natural Science Foundation of China [61673285, 11671284]
- Sichuan Science and Technology Program of China [2021YJ0085]
- National-Local Joint Engineering Laboratory of System Credibility Automatic Verification [ZD20220101]
- National Science Foundation of Sichuan Province of China [2022NSFSC0929]
- Laurent Mathematics Center of Sichuan Normal University [ZD20220101]
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This paper improves uncertainty measurement and feature selection through fuzzy neighborhood rough sets (FNRSs) by proposing two measurement strategies and three measure-based heuristic feature selection algorithms to enhance classification performance.
In fuzzy neighborhood rough sets (FNRSs), uncertainty measurement performs mainly classification-hierarchical and multiplication-simple fusion, so the corresponding feature selection has advancement space. This paper aims to improve uncertainty measurement and feature selection via FNRSs. Two measurement strategies regarding class -hierarchical fusion and multiplication-optimal fusion are proposed, and three measure -based heuristic feature selection algorithms are developed. Concretely, fuzzy neighborhood self-information (FNSI) and joint entropy (FNJE) constitute two bases of heterogeneous fusion, and their multiplication fusion induces both the existing measure FNSIJE (which is based on classification-level fusion) and a new measure CFNSIJE (which is based on class-level fusion); furthermore, FNSIJE and CFNSIJE are extended to the optimal measures FNSIJEE and CFNSIJEE, respectively, by exponential parameterization. The four types of fusion measures acquire their calculation algorithms and granulation nonmonotonicity and systematically motivate four heuristic feature selection algorithms, i.e., the current FNSIJE-FS and the new CFNSIJE-FS, FNSIJEE-FS, and CFNSIJEE-FS. By using examples and experiments, relevant uncertainty measurement and granulation nonmonotonicity are val-idated, while the novel selection algorithms demonstrate better classification perfor-mances. This study establishes the hierarchical fusion and exponential expansion to acquire robust uncertainty measurement and optimal feature selection, and the measure-ment, nonmonotonicity, and selection have strong generalization for information fusion and rough-set learning. (c) 2022 Elsevier Inc. All rights reserved.
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