<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_36627030的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_36627030</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_36627030]]></copyright><item><title><![CDATA[python实现概率质量函数Poisson]]></title><link>https://blog.youkuaiyun.com/qq_36627030/article/details/79394220</link><guid>https://blog.youkuaiyun.com/qq_36627030/article/details/79394220</guid><author>qq_36627030</author><pubDate>Tue, 27 Feb 2018 22:59:04 +0800</pubDate><description><![CDATA[用python实现概率质量函数Possion原理如下：方法一：用scipy库的poissonimport scipy.stats as statsplt.figure(figsize=(12.5,4))a = np.arange(16) poi = stats.poissonlambda_ = [1.5,4.25]colors = ['#348ABD','#A60628']plt.bar(a,po...]]></description><category></category></item><item><title><![CDATA[python中时间序列分析AR模型中最小二乘法估计]]></title><link>https://blog.youkuaiyun.com/qq_36627030/article/details/79394050</link><guid>https://blog.youkuaiyun.com/qq_36627030/article/details/79394050</guid><author>qq_36627030</author><pubDate>Tue, 27 Feb 2018 22:44:50 +0800</pubDate><description><![CDATA[      时间序列分析中的AR模型是利用历史数据来预测未来数据的一种模型，也叫做自回归模型auto-regressive。在滤波器中也有应用，原理跟FIR滤波一样，如果是用matlab的话使用相同AR系数预测的序列和FIR滤波器函数得到的结果是一样的。AR模型重要的部分在于AR系数的估计，以最小二乘法为例，原理如下：1.自回归模型的定义自回归模型（AutoregressiveModel）是用自身...]]></description><category></category></item></channel></rss>