kentatogashi

• MySQLとPostgreSQLの違い。
  • ライセンスの違い
    • MySQLは、GPLと商用のデュアルライセンス。
    • PostgreSQLは、BSDライセンス。
  • プロセスとスレッドの違い
    • MySQLは、マルチスレッド。
    • PostgreSQLは、マルチプロセス。
• NAT越えの技術を把握していますか。(http://www.wata-lab.meijo-u.ac.jp/file/seminar/2018/2018-Semi1-Tetsu_Naruse.pdf)
  • STUN
• TURN

kentatogashi

https://www.kaggle.com/arthurtok/introduction-to-ensembling-stacking-in-python

# apply

import pandas as pd
from sklearn.datasets import load_iris
iris = load_iris()
df = pd.DataFrame(iris.data, columns=df.feature_names)
df['HasBigSepal'] = df['sepal length (cm)'].apply(lambda x: 1 if x > 5 else 0)

kentatogashi

import pandas as pd
import matplotlib.pyplot as plt

df_orig = pd.read_csv('https://timeseries.weebly.com/uploads/2/1/0/8/21086414/_visitors.csv')
df = df_orig.copy()
df['Date'].replace('(.*)Q1', r'\1-01', regex=True, inplace=True)
df['Date'].replace('(.*)Q2', r'\1-04', regex=True, inplace=True)
df['Date'].replace('(.*)Q3', r'\1-07', regex=True, inplace=True)
df['Date'].replace('(.*)Q4', r'\1-10', regex=True, inplace=True)
df['DateTime'] = pd.to_datetime(df['Date'])

kentatogashi

活性化関数(Activation)

sigmoid

relu

softmax

ニューラルネットワークの出力結果を確率として扱うように変換する。

kentatogashi

# 事前に
# apt update && apt upgrade tmux
# apt install xsel xclip

set -g history-limit 10000

# escape time
set -s escape-time 0
set -g display-panes-time 3000

kentatogashi

sudo apt install autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm5 libgdbm-dev
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
mkdir -p ~/.rbenv/plugins
git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
source ~/.bash_profile

git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
rbenv install -l

kentatogashi

#!/bin/sh

[ $(whoami) != root ] && \
	echo 'require root.' && exit 1

which docker-compose > /dev/null 2>&1
[ $? -ne 0 ] && \
	curl -L https://github.com/docker/compose/releases/download/1.21.0/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose

mkdir -p ~/redmine

kentatogashi

#!/usr/local/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
TYPE="$1"
CNT=1
SAMPLING_NUM=50

postqueue -p | tail -${SAMPLING_NUM} | awk '{print $1}' | egrep '^[A-Z0-9]{11}' | while read QUEUE_ID;
do
        echo "queue: $CNT"
        if [ "$TYPE" = --detail ]

kentatogashi

_str = raw_input()
alphabets = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

def rot13_chr(c):
    if c.isalpha():
        if c.islower():
            tmp_alphabets = alphabets.lower()
        elif c.isupper():
            tmp_alphabets = alphabets
        ind = tmp_alphabets.find(c)

kentatogashi

CREATE TABLE `test` (id INT(11) NOT NULL AUTO_INCREMENT, string VARCHAR(32), created_date TIMESTAMP, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;