人工智能『AI』

基于RandomForestClassifier的titanic生存概率分析

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The Challenge

The sinking of the Titanic is one of the most infamous shipwrecks in history.

On April 15, 1912, during her maiden voyage, the widely considered “unsinkable” RMS Titanic sank after colliding with an iceberg. Unfortunately, there weren’t enough lifeboats for everyone onboard, resulting in the death of 1502 out of 2224 passengers and crew.

While there was some element of luck involved in surviving, it seems some groups of people were more likely to survive than others.

In this challenge, we ask you to build a predictive model that answers the question: “what sorts of people were more likely to survive?” using passenger data (ie name, age, gender, socio-economic class, etc).

这个是kaggle上的一个基础项目，目的是探测泰坦尼克号上的人员的生存概率，项目地址：https://www.kaggle.com/c/titanic

网上基于这个项目其实可以找到各种各样的解决方案，我也尝试了不同的做法。但是实际的效果并不是十分好，个人尝试最好的成绩是0.78468，一次是基于深度神经网络，另外一次就是基于当前的随机森林的模型。

另外还可以看到一系列score为1的提交，这些不知道是怎么做到的，真是太tm牛了~~

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Linux『Linux』

git 统计一段时间内提交的代码行数

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代码：

 git log --author="obaby" --after="2019-08-04 00:00:01" --before="2019-08-10 12:00:00"
 --pretty=tformat: --numstat | grep -v 'static'  |
 gawk '{ add += $1 ; subs += $2 ; loc += $1 - $2 } END { printf "增加行数:%s 删除行数:%s 变化总行数:%s\n",add,subs,loc }'
参数说明：
--author 作者 提交者
--after 开始时间
--before 结束时间
--pretty 格式

上面的代码依赖于linux windows下运行可以使用cgywin 或者mobaxterm,https://mobaxterm.mobatek.net

MobaXterm is your ultimate toolbox for remote computing. In a single Windows application, it provides loads of functions that are tailored for programmers, webmasters, IT administrators and pretty much all users who need to handle their remote jobs in a more simple fashion.

MobaXterm provides all the important remote network tools (SSH, X11, RDP, VNC, FTP, MOSH, …) and Unix commands (bash, ls, cat, sed, grep, awk, rsync, …) to Windows desktop, in a single portable exe file which works out of the box.

There are many advantages of having an All-In-One network application for your remote tasks, e.g. when you use SSH to connect to a remote server, a graphical SFTP browser will automatically pop up in order to directly edit your remote files. Your remote applications will also display seamlessly on your Windows desktop using the embedded X server

Linux『Linux』

systemd 运行celery

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However, the init.d script should still work in those Linux distributions as well since systemd provides the systemd-sysv compatiblity layer which generates services automatically from the init.d scripts we provide.

官网已经有了相关的教程http://docs.celeryproject.org/en/latest/userguide/daemonizing.html#usage-systemd， 但是在实际操作的时候发现按照教程来配置无法正常启动。会报错，于是把服务简化了一下，把配置和服务信息写到了一起。如果你也遇到这个问题可以尝试下面的简化脚本：

[Unit]
Description=Celery Service
After=network.target

[Service]
WorkingDirectory=/var/www/html
ExecStart=/usr/local/bin/celery -A proj worker --logfile=/var/log/celery/celery.log  --loglevel="INFO"

Restart=on-failure

#3秒后启动
RestartSec=3s

[Install]
WantedBy=multi-user.target

系统Ubuntu 18.04， systemd版本：

root@mars:/etc/systemd/system# systemctl --version
systemd 229
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP 
+GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN
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