请输入您要查询的字词:
单词
wrapper selection
释义
wrapper selection
Encyclopedia
理学
特征选择
释
wrapper selection
包裹式选择
特征选择的一类方法。包裹式特征选择方法把最终要使用的学习器的性能作为特征子集的评价准则,其目的是为给定学习器选择有利于其性能、“量身定做” 的特征子集,一般而言,由于包裹式特征选择方法直接针对学习器进行优化,因此从最终学习性能上看,包裹式特征选择比过滤式特征选择要好。但是由于包裹式特征选择方法在选择的过程中需要多次训练学习器, 其相应的计算开销会比过滤式特征选择方法大得多,且在样本数目不够时容易过拟合。
随便看
strongly axiomatizable theory
strongly binary tree
strongly bounded sequence
strongly branched covering
strongly branched field
strongly carefree constant
strongly closed lattice
strongly closed subgroup
strongly coercive form
strongly compact cardinal
strongly complete space
strongly connected
strongly connected compactum
strongly connected component
strongly connected digraph
strongly connected graph
strongly connected relation
strongly consistent estimator
strongly consistent sequence
strongly continuous
strongly continuous function
strongly continuous mapping
strongly continuous operator
strongly continuous representation
strongly continuous semigroup
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2025/12/17 6:09:16