| 粒度计算中混合属性约简的权重模糊粗糙集模型 |
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| 引用本文： | 刘洋,周清雷,冯博琴.粒度计算中混合属性约简的权重模糊粗糙集模型[J].西安交通大学学报,2011,45(10):43-47. |
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| 作者姓名： | 刘洋 周清雷 冯博琴 |
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| 作者单位： | 1. 郑州大学信息工程学院,450001,郑州
2. 西安交通大学电子与信息工程学院,710049,西安 |
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| 基金项目： | 国家高技术研究发展计划资助项目(2007AA010408) |
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| 摘 要： | 针对权重粗糙集模型不能有效处理非平衡混合数据的问题,对权重论域上的各种类型变量进行分析并建立统一的模糊等价关系,提出混合数据上的权重模糊粗糙集模型,并利用该模型构造出带权模糊等价空间上的混合属性约简算法.混合属性约简算法产生的模糊软划分可以克服权重论域上离散硬划分产生的信息损失.在非平衡混合数据集上进行的实验结果表明,与基于权重粗糙集的算法相比,基于权重模糊粗糙集模型的属性约简算法的平均分类精度提高了11.9%.
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| 关 键 词： | 粗糙集 混合数据 模糊等价关系 权重论域 属性约简 |
A Weighted Fuzzy Rough Sets Model with Hybrid-Attribute Reduction in Granular Computing |
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| LIU Yang,ZHOU Qinglei,FENG Boqin.A Weighted Fuzzy Rough Sets Model with Hybrid-Attribute Reduction in Granular Computing[J].Journal of Xi'an Jiaotong University,2011,45(10):43-47. |
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| Authors: | LIU Yang ZHOU Qinglei FENG Boqin |
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| Institution: | LIU Yang~1,ZHOU Qinglei~1,FENG Boqin~2 (1.School of Information Engineering,Zhengzhou University,Zhengzhou 450001,China,2.School of Electronics and Information Engineering,Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | In order to solve the problem that weighted rough sets model lacks a mechanism to deal with mixed and imbalanced data,a unified fuzzy equivalent relationship for analyzing different types of features in weighted domain is established,and a weighted fuzzy rough sets model is proposed to deal with mixed data.Furthermore,a hybrid attribute-reduction algorithm is constructed based on the weighted fuzzy rough sets model.Compared with the classical crisp partition, the hybrid algorithm can avoid information loss ... |
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| Keywords: | rough set mixed data fuzzy equivalent relationship weighted domain attribute reduction |
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