國立臺灣大學電機所博士生，平時致力於推廣 R 語言，曾主辦多場 R 語言推廣講座，並經常於 Taiwan R User Group 分享 R 的使用心得。有豐富的 R 語言實務經驗，包含資料的收集、整理、分析到報告製作。擅長根據專案需求，量身打造 R 的資料分析系統，以及運用 R 和 C++ 撰寫高效能演算法。

1. RR RR
Wush Wu
Taiwan R User Group

2. R
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3. http://spectrum.ieee.org/computing/software/the-2015-top-ten-programming-languages
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4. http://myfootpath.com/careers/engineering-careers/statistician-careers/
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5. http://www.r-bloggers.com/mapping-the-worlds-biggest-airlines/
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6. http://r4stats.com/2013/03/19/r-2012-growth-exceeds-sas-all-time-total/
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7. 7/80

8. http://img.diynetwork.com/DIY/2003/09/18/t134_3ca_med.jpg
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9. R
R
R
R
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10. https://docs.oracle.com/cd/B28359_01/datamine.111/b28129/process.htm
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11. R
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12. http://globalebc.mx/cooperation-program
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13. https://docs.oracle.com/cd/B28359_01/datamine.111/b28129/process.htm
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14. http://img.diynetwork.com/DIY/2003/09/18/t134_3ca_med.jpg
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15. http://www.youtube.com/watch?v=OCQU6M4pPiw
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16. Data Package Lahman
R (httr rvest)
R API Package
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Best Practices for Writing an API Package
quantmod twitteR
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-
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17. 17/80

18. [1] "TWII"
TWII.OPEN TWII.HIGH TWII.LOW TWII.CLOSE TWII.VOLUME TWII.ADJUSTED
7871.41 7937.26 7843.60 7920.80 5710600 7920.777
7954.96 7999.42 7917.30 7917.30 5951400 7917.277
7929.89 7955.90 7901.24 7934.51 5717400 7934.487
7940.20 7942.23 7821.71 7835.57 5181400 7835.547
7778.57 7797.57 7736.11 7736.71 4292400 7736.688
7778.38 7827.93 7778.38 7790.01 4516000 7789.987
library(quantmod)
getSymbols("^TWII")
head(TWII)
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19. : AirbnB uses R to scale data
science
Rbnb
Airbnb's engineering, data science, analytics and user
experience teams
Hadoop / SQL R Missing Data
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500+
How Airbnb uses Machine Learning to Detect Host
Preferences
How well does NPS predict rebooking?
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20. Reproducible Research·
R Markdown
Jupyter ir-kernel
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22. 22/80

23. R
R·
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24. R R
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25. http://joelcadwell.blogspot.tw/2013/03/lets-do-some-hierarchical-bayes-choice.html
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26. R
GUI
R
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R (help)-
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27. R
R
R
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R-
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R R
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28. R
R·
R
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29. ·
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30. ·
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copy paste
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31. 31/80

32. ptt R_Language·
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33. Estimate
NA
Beta
Beta
Intercept,data[,2],data[,3],data[,i],data[,j],data[,i]:data[,j]
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34. [ ]:
Oracle ( big5)
DBMSencoding
[ ]:
con <- odbcConnect(dsn, uid = "", pwd = "", DBMSencoding="big5")
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35. R
UseMethod("xmlNamespaceDefinitions") :
'xmlNamespaceDefinitions' "NULL"
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36. [ ]:
R ( SAS)
.DAT
65 40
R
read.delim() XD
~
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37. 21
( 21 )
sample(52)
cards<-sample(52)
num<-cards%%13
num
(5213 )
?
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38. 38/80

39. 39/80

40. ·
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41. R·
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42. R
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43. http://radiusonline.com/interns/my-first-month-at-radiusonline/learn-by-doing/
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44. R R
Live Demo:
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wush@datascienceandr.org-
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45. ·
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46. 01-RBasic-02-Data-Structure-Vectors
# 87 91
year1 <- 87:91
power1 <- c(6097059332, 6425887925, 6982579022, 7323992602.53436, 7954239517)
# 87 91
power2 <- c(59090445718, 61981666330, 67378329131, 66127460204.6482, 69696372914.6949)
# (`year1`) `7e9`
# `7e9` R `7 * 10^9`
year1.answer1 <- < >
# 87 91
power1.mean <- < >
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47. 02-RDataEngineer-01-Parsing
# <http://data.gov.tw/node/7769>
#
#
#
# R
pirate_info <- readLines(file(pirate_path, encoding = < encoding>))
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48. 02-RDataEngineer-06-Join
#' `gdp_path` `gdp`
#' `gdp_path` / GDP( )
...
#' cl_info mortgage_bal data_dt
#' cl_info `cl_info_year`
...
#' `gdp` `cl_info`
#' gdp mortgage_total_bal / gdp
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49. ·
vignettes
help
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-
example
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-
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50. R
·
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51. 00-Hello-DataScienceAndR
01-RBasic
02-RDataEngineer
03-RVisualization
Optional-Programming
Project-ROpenData
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52. Hello DataScienceAndR
swirl
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53. R Basic
R
R
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54. R Data Engineer
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API Server JSON
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55. R Visualization
ggplot2
googleVis ggmap
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56. Hello World·
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57. Wush Wu Chih Cheng Liang Cheng-Yu Lin Johnson
Hsieh CC - 3.0
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58. 58/80

59. 2016-02-13 2016-07-15
1238
9528
5301
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60. 60/80

61. 61/80

62. R
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63. R
tracking server
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64. 64/80

65. 65/80

66. http://www.effectivephilanthropy.org/qa-improving-application-and-reporting-processes/
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67. 67/80

68. Swirl Project
lesson.yaml
swirl
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https://github.com/swirldev/swirl/compare/master...wush978:mast-
- Class: meta
Course: DataScienceAndR
Lesson: 00-Hello-DataScienceAndR
Author: Wush Wu
Type: Standard
Organization: Taiwan R User Group
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69. 69/80

70. cmd_question
- Class: cmd_question
Output: `chol2inv`
CorrectAnswer: help(chol2inv)
AnswerTests: any_of_exprs("?chol2inv", "help(chol2inv)")
Hint: `?` `help`
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71. 71/80

72. mult_question
- Class: mult_question
Output: |
assignment
R console `a - 1`
AnswerChoices: 1;2;" ";"4"
CorrectAnswer: 1
AnswerTests: omnitest(correctVal= '1')
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73. 73/80

74. script
- Class: script
Output: |
`submit()`
Rstudio
File -> Reopen With Encoding... -> UTF-8
Script: RBasic-02-HW.R
AnswerTests: rbasic_02_hw_test()
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75. 75/80

76. DataScienceAndR/
01-RBasic-02-Data-Structure-Vectors/
customTests.R
initLesson.R
lesson.yaml
scripts/
RBasic-02-HW.R
RBasic-02-HW-correct.R
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77. Tests
omnitest
any_of_exprs
My implementations:
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https://github.com/wush978/swirl/blob/master/R/answerTests3.R-
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78. Installation
https://github.com/wush978/R/blob/gh-pages/init-swirl.R
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79. Q&A
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80. R vs Python
Choosing R or Python for data analysis? An infographic
Pros and Cons of R vs Python Sci-kit learn
Which is better for data analysis: R or Python?
How to Choose Between Learning Python or R First
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