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something of data science introduction

walile
November 17, 2020

something of data science introduction

If there is any copyright thing would like to remove please contact me.

the data all list in the end of the presentation for reference.

walile

November 17, 2020
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  1. What is “Data Science” • 1960年代首次出現提議用Data Science替代Computer Science • 1997年11月,當時密西根大學教授吳建福(C.

    F. Jeff Wu,美國華裔統計學家) 發表「統計 = 資料科學?」就任演講中,重新描述統計工作為:資料收集、資 料建模和分析、決策制定的三部曲 • 1997年密西根大學教授吳建福將資料科學家定義:能夠將大型數據集中取出數 據,並進行統計推斷的統計學家 • 2012年,資料科學家被「哈佛商業評論」稱為「二十一世紀最性感的職業」 <del>然後就變成了Buzzword</del>
  2. Data Preparation • 資料科學約80%的工作時間都在處理Data preparation (2016, Survey of Data Science

    by Forbes) • Language: SQL, Python, Java, Scala, R, Excel (對,沒看錯,就是Excel) • Data Preparation: Collect、Move/Store、Transform • 很多資料來源(Data Source),確認可信度、資料邏輯
  3. Data Pipeline • 建置資料管道(Data Pipeline)基礎設施(Infrastructure) • 建置ETL (Extract, Transform, Load),從資料來源擷取、轉換資料再導入目標

    ◦ 改欄位名稱 ◦ 去除missing value ◦ 資料整合,套用商業邏輯 ◦ 轉變資料格式(ex. JSON資料展開成DataFrame或是轉成資料倉儲格式)
  4. Reference Engineering Data - Whether You Know It or Not

    https://www.prowesscorp.com/engineering-data-whether-you-know-it-or-not/ The AI Hierarchy of Needs https://hackernoon.com/the-ai-hierarchy-of-needs-18f111fcc007 Data Engineer vs Data Scientist https://towardsdatascience.com/data-engineer-vs-data-scientist-bc8dab5ac124
  5. Reference A New Venn Diagram for Data Science https://www.linkedin.com/pulse/new-venn-diagram-data-science-pierluigi-casale/ 資料科學的Danger

    Zone https://readata.org/tag/data-science-danger-zone/ Cleaning Big Data: Most Time-Consuming, Least Enjoyable Data Science Task, Survey Says https://www.forbes.com/sites/gilpress/2016/03/23/data-preparation-most-time- consuming-least-enjoyable-data-science-task-survey-says/#20a7a376f637
  6. Q&A