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Bias vs. Variance(2)--regularization and bias/variance,如何选择合适的regularization parameter λ(model selection)
Linear regression with regularization当我们的λ很大时,hθ(x)≈θ0,是一条直线,会出现underfit;当我们的λ很小时(=0时),即相当于没有做regularization,会出现overfit;只有当我们的λ取intermediate值时,才会刚刚好。那...
分类:其他好文   时间:2015-12-16 19:30:21    阅读次数:505
Review of Arterki-High-leverage side- combination plier.
Iamalazyguy,butmybrotherisjustoppositetowhatIam.Heisalwayspassionateabouthisbackyardworks,andhealwaystakesgoodcareofhistoolseventhough,itdoesn’tlastforlongbecauseofitslowquality.Iseehimworkingsohardbreakinghissweatallthetimetomakethejobdone,butonedayInotic..
分类:其他好文   时间:2015-12-13 18:53:23    阅读次数:137
第一部分 软件测试综述
软件失败的用语:缺点(defect)故障(fault)问题(problem)错误(error)事件(incident)异常(anomaly)偏差(variance)失败(failure)矛盾(inconsistency)特殊(feature)缺陷(bug)产品说明书产品说明书(product spe...
分类:其他好文   时间:2015-12-10 11:05:32    阅读次数:218
1058. A+B in Hogwarts (20)
If you are a fan of Harry Potter, you would know the world of magic has its own currency system -- as Hagrid explained it to Harry, "Seventeen silver ...
分类:其他好文   时间:2015-12-06 12:53:16    阅读次数:143
ULK --- Chap 4: Tasklets (Note)
Tasklets are the preferred way to implement deferrable functions in I/O drivers. As already explained,tasklets are built on top of two softirqs named ...
分类:其他好文   时间:2015-12-03 08:27:39    阅读次数:162
机器学习中的Bias(偏差),Error(误差),和Variance(方差)有什么区别和联系?
原文:http://www.zhihu.com/question/27068705机器学习中的Bias(偏差),Error(误差),和Variance(方差)有什么区别和联系?修改最近在学习机器学习,在学到交叉验证的时候,有一块内容特别的让我困惑,Error可以理解为在测试数据上跑出来的不准确率 ,...
分类:其他好文   时间:2015-11-28 13:34:35    阅读次数:1236
因子分析 (Factor Analysis Sharp)
In my understanding, factor analysis is a method developed to avoid the mass estimation of the variance-covariance matrix when doing Markowitz Allocat...
分类:其他好文   时间:2015-11-20 21:43:19    阅读次数:194
因子分析 (Factor Analysis Sharp)
In my understanding, factor analysis is a method developed to avoid the mass estimation of the variance-covariance matrix when doing Markowitz Allocat...
分类:其他好文   时间:2015-11-18 00:41:43    阅读次数:159
TCP Silly Window Syndrome
In?the topic describing TCP‘s Maximum Segment Size (MSS) parameter, I explained the trade-off in determining the optimal size of TCP segments. If segments are too large, we risk having them become...
分类:Windows程序   时间:2015-11-15 21:54:30    阅读次数:289
机器学习基本概念
Understanding the Bias-Variance Tradeoff:http://scott.fortmann-roe.com/docs/BiasVariance.html 偏差与方差(Bias and Variance):http://blog.csdn.net/u013802188...
分类:其他好文   时间:2015-11-06 00:03:09    阅读次数:246
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