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Measure theory

MT Lesson 4: Caratheodory theorem

3 minute read

Published:

In this section, we prove the Caratheodory theorem: the $\sigma$-additive set function on algebra $\mathcal{A}\subseteq \mathcal{P}(\Omega)$ can be extended to a $\sigma$ -additive function, which is an outer measure, on the $\sigma$-algebra $\mathcal{F}$ generated from $\mathcal{A}$, and the extension is unique if $\Omega$ is $\sigma$-finite.

MT Lesson 1: Non-measurable set

2 minute read

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In this section, we show that we need some specified set to construct the definition of measure.

Time series

Durbin-levinson algorithm

less than 1 minute read

Published:

在看shumway学习ARMA模型的PACF时,下面两个问题总是困扰着我:

distributed system

MapReduce

less than 1 minute read

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MapReduce is a programming model for large data operating on multiple computers. Key functions listed below: