September 2013
Intermediate to advanced
264 pages
5h
Chinese
Content preview from Bad Data 技術手冊
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
問題：給人類使用的資料格式
|
33
資料的排列
一個人類的觀察者能夠相對容易的解釋這張表的資訊。想要知道 11 年級的男學生參加
NCEA Level 1 的數量（5,929）是很簡單的。
假如這就是我們想要從這些資料中抽出的所有資訊，也就是說，若我們想要做的就只是
從這張表格中讀取某幾個數字，那麼就沒有什麼問題。換句話說，若該資料表格是一個
有用的
最終結果
，若所有我們需要的就只是
文字型態
的資料，那麼單純使用這張表格
就夠了。
然而，若資料能夠被用在其他地方，那麼它對我們來說一定更有用。這個特定的資料表
示方式將只會對某些擁有特定目的的人有用。
舉例來說，有些人較喜歡使用點或圖形的方式檢視這些資料，而不是文字表格的形式
（見圖 3-2）。不同的排列資料方式也能夠更容易的使用不同方式來作比較。舉例來說，
若表格是如範例 3-2 所顯示的，那麼就能夠比較容易的專注在男學生的資料上。
圖 3-2 以圖 3-1 的資料繪製而來的圖形
33
34
|
第三章：資料是要給人類使用，而非給機器使用
範例
3-2
重新排列圖
3-1
的資料
，
讓相同性別的值都放在一起
Gender Level Year 11 Year 12 Year 13
Female NCEA Level 1 0 60 38
Female NCEA Level 2 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.