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# System prepended metadata

title: Mathlab 5/5 part1

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# Mathlab 5/5 part1

![](https://i.imgur.com/fttusxk.jpg)


## Read File


## Infrastructure

## Sound trainning

## KNN

> hyperparemater

調參數
ex
調鄰居數目


modelimportance : 模型中有很多參數(feature)，他會決定哪一個比較重要

畫fitctree
![](https://i.imgur.com/9kew5AM.png)

feature transformation : pca,factoran 
