welcome to ist 380 !
DESCRIPTION
Welcome to IST 380 !. Data Science Programming. We don't have strong enough words to describe this class. - US News and Course Report. When the course was over, I knew it was a good thing. an advocate of concrete computing – and HMC's mascot. - New York Times Review of Courses. - PowerPoint PPT PresentationTRANSCRIPT
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Welcome to IST 380 !
When the course was over, I knew it was a good thing.
We don't have strong enough words to describe this class.
Data Science Programming
an advocate of concrete computing – and HMC's mascot - New York Times Review of Courses
- US News and Course Report
We give this course two thumbs!- Ebert and Roeper
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Welcome to IST 380 !
Data Science Programming
an advocate of concrete computing – and HMC's mascot
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About myself
Who Zach Dodds
Harvey Mudd CollegeWhere
What Research includes robotics and computer vision
Contact Information
909-607-0867
Office Hours:Friday mornings, 9-11 am
or set up a time...
When Mondays 7-10pm here in ACB 119
HMC Beckman B111
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TMI?
fan of low-tech gamesfan of low-level AI
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IST 380 ~ the big picture
What is it? Why me?
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IST 380 ~ the big picture
Data Science Venn
Diagram
Hmmm… where am I on this diagram?
What is it?
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Data?!• Neighbor's name
• A place they consider home
• Are they working at a company now?
• How many U.S. states have they visited?
• Their favorite unhealthy food… ?
• Do they have any "Data Science" background?
(statistics, machine learning, CS)
Where?
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state reminders…
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Data! • Neighbor's name
• A place they consider home
• Are they working at a company now?
• How many U.S. states have they visited?
• Their favorite unhealthy food… ?
• Do they have any "Data Science" background?
(statistics, machine learning, CS)
Zachary Dodds
Pittsburgh, PA
Harvey MuddWhere?
44
mostly CS for me…
M&Ms
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Data! • Neighbor's name
• A place they consider home
• Are they working at a company now?
• How many U.S. states have they visited?
• Their favorite unhealthy food… ?
• Do they have any "Data Science" background?
(statistics, machine learning, CS)
Zachary Dodds
Pittsburgh, PA
Harvey MuddWhere?
44
mostly CS for me…
M&Ms
be sure to set up your login + profile for the submission site…
This class is truly seminar-
style: I'm here, as you are,
in order to gain insights
into this very new field… .
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Data Science concerns
Is "Data Science" important or just
trendy?
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Hmmm…
Data Science concerns
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the companies are expanding as fast as the data!
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There's certainly a lot of it!
2015
1 Zettabyte
1 Exabyte
1 Petabyte
(brain) 14 PB: http://www.quora.com/Neuroscience-1/How-much-data-can-the-human-brain-store
(2002) 5 EB: http://www2.sims.berkeley.edu/research/projects/how-much-info-2003/execsum.htm
1 Petabyte == 1000 TB 2002 2009
(2009) 800 EB: http://www.emc.com/collateral/analyst-reports/idc-digital-universe-are-you-ready.pdf
(2015) 8 ZB: http://www.emc.com/collateral/analyst-reports/idc-extracting-value-from-chaos-ar.pdf
2006 2011
(2006) 161 EB: http://www.emc.com/collateral/analyst-reports/expanding-digital-idc-white-paper.pdf
(2011) 1.8 ZB: http://www.emc.com/leadership/programs/digital-universe.htm (life in video) 60 PB: in 4320p resolution, extrapolated from 16MB for 1:21 of 640x480 video (w/sound) – almost certainly a gross overestimate, as sleep can be compressed significantly!
5 EB
161 EB
800 EB
1.8 ZB 8.0 ZB
14 PB
60 PB
Data produced each year
100-years of HD video + audioHuman brain's capacity
Data, data everywhere…
References
1 TB = 1000 GB
120 PB
logarithmic scale
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data
information
knowledge
wisdom
I'd call it data, not information
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Big Data?
I agree with this…
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Make data easier to use ~ by using it!
It may be true that Data Science isn't
a science – but that doesn't mean
it's not useful!
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IST 380 ~ the big picture
What? Why?Data Science Programming Data Rules
All of our insights – large and small, permanent and ephemeral, natural and artificial – come about
through the integration of lots of data.
Data Science simply recognizes that the rules and skills behind those insights are widely applicable…
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A few examples…
Make3d
How is this being done?
Andrew Ng ~ Computers and Thought award,
2009
… Data Science is at the heart of computer science
and how do we succeed?
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A few examples…
… Data Science is at the heart of computer science
Stanford's Autonomous
Vehicles project (Thrun et al.)
Learning to Powerslide
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A few examples…
… Data Science is at the heart of computer science
"my summer was finding that red line"
Learning ground from obstacles
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A few examples…
Learning ground from obstacles
classification segmentation
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Insights beyond science
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Marketing
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Visualization
Motivation
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Recommender Systems
predicting movie ratings
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Bob Bell, winner of the "Netflix prize"
Napoleon Dynamite =Batman Begins =
Netflix Prize
Finding Nemo =Lord of the Rings =
(I don't know this guy)
1.22.75
????
Some films are difficult to predict…
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Bob Bell, winner of the "Netflix prize"(I don't know this guy)
Napoleon Dynamite =Batman Begins =
Finding Nemo =Lord of the Rings =
1.22.75
.67
.42Some films are difficult to predict… and others are easier!
Netflix Prize
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Why IST 380 ?Specific skills:
R statistical environment (and the S programming language)
Experience with several statistical analyses (descriptive statistics)
Experience with predictive statistics (modeling) and machine learning algorithms
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Why IST 380 ?Specific skills:
Broad background:
You'll be confident and capable with whatever datasets you encounter in the future – on your own or as part of a team.
R statistical environment (and the S programming language)
Experience with several statistical analyses (descriptive statistics)
Experience with predictive statistics (modeling) and machine learning algorithms
Final project ~ open-ended with datasets of your choice
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About IST 380 …
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DetailsWeb Page:
http://www.cs.hmc.edu/~dodds/IST380
Assignments, online text, necessary files, lecture slides are linked
First week's assignment: Getting started with R
Programming: R
Textbook An introduction to Data Sciencejsresearch.net/groups/teachdatascience/
www.r-project.org/
Grab both of these now…
freely available online
and many online resources…
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Homepage
http://www.cs.hmc.edu/~dodds/IST380/Go to the course page
Grab R and the text from these two links…
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Homework
Assignments~ 2-5 problems/week ~ 100 points extra credit, often
Due Tuesday of the following week by 11:59 pm.
Assignment 1 due Tuesday, February 5.
1 week + 1 day…
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Homework
Working on programs: On your own or in groups of 2.
Divide the work at the keyboard evenly!
Submitting programs: at the submission website
Today's Lab: install software ensure accounts are workingtry out R - the first HW is officially due on 2/5
Assignments~ 2-5 problems/week ~ 100 points extra credit, often
Due Tuesday of the following week by 11:59 pm.
Assignment 1 due Tuesday, February 5.
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Outline
Weeks 1-5
using R
descriptive statistics
predictive statistics
probability distributions
Weeks 6-10
"Data Science"
"Machine Learning"
statistical modelingsupport vector machines (SVMs)
random forestsk-means algorithm
nearest neighbors (NN)
Weeks 11-15
approximate!
Final Project
No breaks?!
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Grading
Grades
Final project
if score >= 0.95: grade = "A"if score >= 0.90: grade = "A-"if score >= 0.86: grade = "B+"
• the last ~4 weeks will work towards a larger, final project
• there will be a short design phase and a short final presentation
• I'd encourage you to connect R and our Data Science techniques to other datasets or projects that you use/need/like, etc.
Based on points percentage ~ 800 points for assignments
see the course syllabus for the full list...~ 400 points for the final project
• choose your own problem to study (I'll have some suggestions, too.)
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Academic Honesty
This course operates under CGU's (and all of Claremont Schools') Academic Honesty policies…
•Your work must be your own. This must be true for the whole team, if you're working in a pair.
•Consulting with others (except team members or myself) is encouraged, but has to be limited to discussion and debugging of problems. Sharing of written, electronic, or verbal solutions/files/code is a violation of CGU’s academic honesty policy.
•A reasonable guideline: Work is your own if you could delete all of it and recreate it yourself.
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Thoughts?
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Getting to know… R
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Getting to know… R
http://lang-index.sourceforge.net/#categ
R is the programmer's toolkit for statistics; SAS, Stata, SPSS are preferred by those in business intelligence
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Getting to know… R
Free… and very well supported online…
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Getting to know… R
R is responsive, up-to-date, and flexible: Data Science vs. Statistics
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Getting to know… R
1) Find the IST 380 course webpage
Try it!
www.cs.hmc.edu/~dodds/IST380/
2) Download and install R
3) Run R and try some basic commands at the prompt:
6 * 7
rnorm(10)
x <- 380
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Getting started!
1) Open Matloff's Why R? notes
2) Skip ahead to page 7, the "5 minute example session"
3) Try out the commands in section 2.2 to get started…
4) When you finish, save your session and submit it!
This is problem 1 this week
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Saving your session
2) Use the Save to file… (Windows) or Save as… (Mac) in order to save your current console session into hw1
This is problem 1 this week
1) Create a folder named hw1, perhaps on your desktop
3) Name that file pr1.txt
4) From your operating system, open up that file in order to confirm it contains your whole session!
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Submitting your work
2) From the course webpage, click on the submission site link.
You've completed Problem 1!
1) Zip up hw1 into hw1.zip
3) Choose a submission site login name & let me know!
4) Once your account is made, login, change your password to something you know, and submit hw1.zip
This webserver can be spacey -- I should
know!
troubles? email me!5) You can submit again – all copies are saved…
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Reflection
Average and standard deviation?
Assignment?
Comments?
Printing?
Comments?
Creating a vector?
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R types
You can use mode() to view the type of a variable.
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Where's the big data?
Vectors are R lists of a single type of element
c ~ concatenate
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Where's the big data?
Vectors are R lists of a single type of element
c ~ concatenate
the colon : also creates vectors
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Analyzing vectors – try these…
Square brackets [] can "subset" (or "slice") vectors
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Analyzing vectors
Square brackets [] can "subset" (or "slice") vectors
you can use a boolean vector
to subset another vector
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NA
R uses NA to represent data that is "not available"
What is going on here?
The function is.na( ) tests for NA
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NA
R uses NA to represent data that is "not available"
What is going on here?
The function is.na( ) tests for NA
This uses subsetting to remove NA values!
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Data frames
R's fundamental data structures are data frames
The next tutorial will introduce them…
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Irises…
setosavirginica
data() yields many built-in data files. This is iris
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Subsetting iris data
As with vectors, you can "subset" data frames.
df[rows,cols]
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Lab…
The 2nd part of each class meeting dedicated to lab work.
I welcome you to stay for the lab, but it is not required.
Today's lab:
Work through Santorico and Shin's Tutorial for the R Statistical Package and submit the console sessions as pr2_1.txt, pr2_1.txt, pr2_1.txt, pr2_1.txt, and pr2_1.txt.
This is a nice reinforcement of vectors, introduction to data frames, and a look at the graphics that R supports.
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Homework
Problem 3: Challenge exercises in R
These will reinforce the "subsetting" and data-analysis introduction from pr2's tutorial.
Problem 4: Introduction to Data Science, early chapters
This is a fuller background on R and the field of data science
(submit your console session for both of these…)
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Lab !
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CS vs. IS and IT ?
www.acm.org/education/curric_vols/CC2005_Final_Report2.pdf
greater integration system-wide issues
smaller details machine specifics
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CS vs. IS and IT ?
Where will IS go?
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CS vs. IS and IT ?
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IT ?
Where will IT go?
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IT ?
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The bigger picture
Weeks 10-12
Objects
Week 10
Week 11
Week 12
Weeks 13-15
Final Projects
classes vs. objects
methods and data
inheritance
Week 13
Week 14
Week 15
final projects
final projects
final exam
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Data?!• Neighbor's name
• A place they consider home
• Are they working at a company now?
• How many U.S. states have they visited?
• Their favorite unhealthy food… ?
• Do they have any "Data Science"
(statistics, machine learning, CS)
background?
Where?
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state reminders…
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Data! • Neighbor's name
• A place they consider home
• Are they working at a company now?
• How many U.S. states have they visited?
• Their favorite unhealthy food… ?
• Do they have any "Data Science"
(statistics, machine learning, CS)
background?
Zachary Dodds
Pittsburgh, PA
Harvey MuddWhere?
44
mostly CS for me…
M&Ms
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Data! • Neighbor's name
• A place they consider home
• Are they working at a company now?
• How many U.S. states have they visited?
• Their favorite unhealthy food… ?
• Do they have any "Data Science"
(statistics, machine learning, CS)
background?
Zachary Dodds
Pittsburgh, PA
Harvey MuddWhere?
44
mostly CS for me…
M&Ms
be sure to set up your login + profile for the submission site…
This class is truly seminar-style:
we're devloping expertise in this field together.