Define a sample from an unknown population with n n n independent observations as x ( x 1 , x 2 , . . . , x n ) ′ . x (x_1, x_2, ..., x_n). x(x1,x2,...,xn)′.
A statistic θ ^ \hat{\theta} θ^ that we are interested in is a function of the samp…
总结:
自助法:假设有n个样本,每次有放回地从n个样本中取一个
刀切法:留一交叉验证法,从样本中剔除一个,估计偏差与方差 我们介绍了留一交叉验证法(Leave one out cross validation)。本节介绍和留一法密切…
一、简介 Jackknife(刀切法)是有Maurice Quenouille (1949)提出的一种再抽样方法,其原始动机是降低估计的偏差。Jackknife为一种瑞士小折刀,很容易携带。通过类比, John W. Tukey (1958)在统计学中创造了这个术语,作为一种通用的假…
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先直接贴代码,我们再慢慢分析,代码来自openai的图像分类模型的一小段
def bytes_to_unicode():"""Returns list of utf-8 byte and a corresponding list of unicode strings.The reversible bpe c…
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nc签到题,跟端口连接拿到n和phin n 8336450100232098099043686671148282601664696810002345240872579498695511770993195704402414029892029461830476866385453475141207…