山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (2): 109-117.doi: 10.6040/j.issn.1672-3961.0.2021.573
刘斌1,2,王磊1,2 *,王冲1,2,蔡香香1,2
LIU Bin 1,2, WANG Lei 1,2*, WANG Chong1,2, CAI Xiangxiang1,2
摘要: 为解决相容块粗糙集模型中概念近似集静态算法效率低的问题,对象集发生变化时,从新的角度提出一种增量式近似集更新方法。引入相容块粗糙集模型的基本概念,在对象集发生变化的条件下更新论域子集,结合增加(或删除)的对象集与相容块之间的联系,更新每一个相容块,并提出更新相容块在论域上覆盖和划分的方法,设计一种近似集增量式更新算法。6组UCI数据集试验结果表明,在增加对象时,本研究算法比非增量式更新算法时间缩短了1/3,在删除对象时时间缩短了1/2。在同种数据集下,本研究算法的时间消耗均小于其他4种更新算法,验证了算法的高效性和可行性。
中图分类号:
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