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基于反馈的人工负选择分类算法
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作者 沈彤 关毅 董喜双 《智能计算机与应用》 2013年第5期61-65,共5页
人工免疫系统是受人体免疫系统启发的一种智能算法,负选择算法作为人工免疫系统的核心算法之一,在各领域被广泛研究和应用。从两方面对负选择算法进行了改进,首先对记忆细胞数量对识别准确率的影响进行了研究,提出一种反馈学习的思想来... 人工免疫系统是受人体免疫系统启发的一种智能算法,负选择算法作为人工免疫系统的核心算法之一,在各领域被广泛研究和应用。从两方面对负选择算法进行了改进,首先对记忆细胞数量对识别准确率的影响进行了研究,提出一种反馈学习的思想来进行记忆细胞数量的优化,实现提高分类过程中的识别准确率。然后为了解决传统负选择算法存在检测器覆盖空间存在交集、整体覆盖空间较低的问题,提出通过记忆细胞识别半径的自动调整,减少检测器数量,提高整体覆盖空间的方法,这种方法避免了"交叉识别(overlap)"和"识别洞(hole)"现象的出现。最后,实验结果表明算法在解决文本分类问题是有效可行的,其在路透社文本分类数据集上分类准确率达到了93.89%。 展开更多
关键词 选择算法 人工负选择分类 反馈学习
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A self region based real-valued negative selection algorithm 被引量:1
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作者 张凤斌 王大伟 王胜文 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2008年第6期851-855,共5页
Point-wise negative selection algorithms,which generate their detector sets based on point of self data,have lower training efficiency and detection rate.To solve this problem,a self region based real-valued negative ... Point-wise negative selection algorithms,which generate their detector sets based on point of self data,have lower training efficiency and detection rate.To solve this problem,a self region based real-valued negative selection algorithm is presented.In this new approach,the continuous self region is defined by the collection of self data,the partial training takes place at the training stage according to both the radius of self region and the cosine distance between gravity of the self region and detector candidate,and variable detectors in the self region are deployed.The algorithm is tested using the triangle shape of self region in the 2-D complement space and KDD CUP 1999 data set.Results show that,more information can be provided when the training self points are used together as a whole,and compared with the point-wise negative selection algorithm,the new approach can improve the training efficiency of system and the detection rate significantly. 展开更多
关键词 artificial immune real-valued negative selection cluster analysis self region partial training
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