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<!DOCTYPE html>
<html>
<head>
<title>資料整合</title>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<meta name="generator" content="pandoc" />
<meta name="date" content="2017-03-23" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="apple-mobile-web-app-capable" content="yes">
<base target="_blank">
<script type="text/javascript">
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// Slide settings
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title: '資料整合',
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name: 'Wush Wu' ,
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www: '',
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<link href="Join_files/ioslides-13.5.1/fonts/fonts.css" rel="stylesheet" />
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<style type="text/css">
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</head>
<body style="opacity: 0">
<slides class="layout-widescreen">
<slide class="title-slide segue nobackground">
<!-- The content of this hgroup is replaced programmatically through the slide_config.json. -->
<hgroup class="auto-fadein">
<h1 data-config-title><!-- populated from slide_config.json --></h1>
<h2 data-config-subtitle><!-- populated from slide_config.json --></h2>
<p data-config-presenter><!-- populated from slide_config.json --></p>
<p style="margin-top: 6px; margin-left: -2px;">March 23, 2017</p>
</hgroup>
</slide>
<slide class=''><hgroup><h2>資料整合是資料科學的捷徑</h2></hgroup><article >
<ul>
<li>飛機起降資料v.s.天氣</li>
<li>政府招標資料v.s.商業司的公司基本資料</li>
<li>GDP資料v.s.房貸餘額</li>
</ul>
</article></slide><slide class=''><hgroup><h2>資料整合的方式</h2></hgroup><article >
<ol>
<li>決定row的物理意義</li>
<li>將不同來源的資料依照該row的物理意義做整理</li>
<li>依照不同data.frame的row的物理意義，進行整合</li>
</ol>
</article></slide><slide class=''><hgroup><h2>範例: 飛機起降資料v.s.天氣</h2></hgroup><article id="-v.s.">
<ul>
<li>飛機起降資料
<ul>
<li>row: 航班、機場、時間</li>
</ul></li>
<li>天氣資料
<ul>
<li>row: 機場、時間</li>
</ul></li>
<li>天氣資料可以作為飛機起降資料的補充
<ul>
<li>原本飛機起降資料不包含天氣的資訊，在JOIN之後就包含了天氣資訊</li>
</ul></li>
</ul>
</article></slide><slide class=''><hgroup><h2>練習: 翻轉教室 02-RDataEngineer-06-Join</h2></hgroup><article id="--02-rdataengineer-06-join">
</article></slide><slide class=''><hgroup><h2>範例: 政府招標資料v.s.商業司的公司基本資料</h2></hgroup><article id="-v.s.">
<ul>
<li>政府招標資料
<ul>
<li>row: 標案</li>
</ul></li>
<li>商業司的公司基本資料
<ul>
<li>row: 公司</li>
</ul></li>
<li>JOIN: 必須把政府招標資料的row從<em>標案</em>改成<em>公司</em></li>
</ul>
<pre >data.frame(tender = "A123456", players = "12345,234546")
# 整理
data.frame(
tender = c("A123456", "A123456"),
players = c("12345", "234546")
)</pre>
</article></slide><slide class=''><hgroup><h2>範例: GDP資料v.s.房貸餘額</h2></hgroup><article id="-gdpv.s.">
<ul>
<li>GDP的row: 年度累積資料</li>
<li>房貸餘額的row: 當月份的瞬間資料</li>
<li>挑戰: 要怎麼做比對? 怎麼整理?</li>
</ul></article></slide>
<slide class="backdrop"></slide>
</slides>
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