Kenta Togashi 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

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)

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。

	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'])

	# 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

	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

	#!/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

	#!/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 ]

	_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)