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基于粗糙集的决策树集成学习算法
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作者 时雷 段其国 +3 位作者 张娟娟 熊明阳 席磊 马新明 《广西科学》 CAS 2018年第4期423-427,共5页
【目的】为提高决策树集成的泛化能力和效率,解决集成全部决策树的情况下有时并不显著提高精度、反而导致额外存储和计算开销的问题,提出一种基于粗糙集的决策树集成学习算法。【方法】该算法基于粗糙集理论,从训练的全部决策树中选择... 【目的】为提高决策树集成的泛化能力和效率,解决集成全部决策树的情况下有时并不显著提高精度、反而导致额外存储和计算开销的问题,提出一种基于粗糙集的决策树集成学习算法。【方法】该算法基于粗糙集理论,从训练的全部决策树中选择一部分进行集成。【结果】与目前流行的集成学习算法Bagging和Boosting相比,本文提出的算法有效地减小了集成规模,并获得更好的泛化能力。【结论】该算法提高了决策树集成的泛化能力和效率。 展开更多
关键词 集成学习 粗糙集 决策树 BAGGING BOOSTING
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Approach of hybrid soft computing for agricultural data classification
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作者 Shi Lei duan qiguo +3 位作者 Si Haiping Qiao Hongbo Zhang Juanjuan Ma Xinming 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2015年第6期54-61,共8页
Soft computing is an important computational paradigm,and it provides the capability of flexible information processing to solve real world problems.Agricultural data classification is one of the important application... Soft computing is an important computational paradigm,and it provides the capability of flexible information processing to solve real world problems.Agricultural data classification is one of the important applications of computing technologies in agriculture,and it has become a hot topic because of the enormous growth of agricultural data available.Support vector machine is a powerful soft computing technique and it realizes the idea of structural risk minimization principle to find a partition hyperplane that can satisfy the class requirement.Rough set theory is another famous soft computing technique to deal with vague and uncertain data.Ensemble learning is an effective method to learn multiple learners and combine their decisions for achieving much higher prediction accuracy.In this study,the support vector machine,rough set and ensemble learning were incorporated to construct a hybrid soft computing approach to classify the agricultural data.An experimental evaluation of different methods was conducted on public agricultural datasets.The experimental results indicated that the proposed algorithm improves the performance of classification effectively. 展开更多
关键词 agricultural data soft computing rough set support vector machine ensemble learning CLASSIFICATION
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