Winchell Wang

Blog For A Reckless Man

恢复微信通知

iPhone上微信/WeChat的通知无法收到如何解决

最近学到了，也是腾讯自己修复了微信的这个bug吧。或者与其说是修复，不如说是提供给用户一种修复微信通知的工具。背景问题我在使用iPhone这么久，发现微信有一个不断复现的问题，就是在长时间使用微信后，微信的notification banner就消失了。具体而言，就是当安装的微信在没有任何的重装行为，正常使用一段时间，通常是半年到两年的时间后，当把微信关闭后，或者微信长期驻留后台没有...

Posted by Winchell.Wang on April 17, 2023

Common Units in Chemistry

A brief manual to conclude the common units in chemistry

NOT Finish yet, Still drafting. 1. Weight 1.1 Weight Percent Weight Percent (重量比), P is used to express approximate concentrations. The term specifies the grams of substance per 100 grams of sol...

Posted by Winchell.Wang on April 1, 2023

General Manual for Mathematical Equations in LaTex

Brief manual for the code used in LaTex to generate equations

This document mainly copied the content from this link to study the LaTex for mathmatic equation. Reserved Symbol There are some characters which need to be typed out by a specific method in LaTex...

Posted by Winchell.Wang on March 28, 2023

回归树的评价指标

Sklearn中Decision Tree在回归模型中的评价指标

1 对Sklearn中Decision Tree的简单理解在Sklearn中Decision Tree分为两个类型（基于CART），一个是基于类型的分类器，另一个则是针对连续型变量的回归模型。分类树在我个人看来是属于有监督的机器学习的一种，对于特征的输入，都有一个确定的分类来对应这些特征。比如年龄在0-17岁之间的人都可以定义为未成年，18-65岁之间的可以定义为劳动人口，而66岁及...

Posted by Winchell.Wang on March 7, 2023

Install Docker on Ubuntu Server 20.04

A simple and neat installation guide for Docker

Assume you are using a normal account, but not root account. 1 Update and Install Necessary Program ca-certificates and curl are necessary for the following step to add Docker repository to s...

Posted by Winchell.Wang on July 12, 2022