data & visual analytics - visualization · course registration • as of 3pm today • cse 6242...
TRANSCRIPT
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http://poloclub.gatech.edu/cse6242CSE6242 / CX4242:
Data & Visual Analytics
Duen Horng (Polo) Chau Associate Professor, College of Computing Associate Director, MS AnalyticsMachine Learning Area Leader, College of Computing Georgia Tech
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Google “Polo Chau” (only one in the world)
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How to address Polo?Grammatically correct
Prof. Chau
Dr. Chau
Grammatically incorrect, but popular
Prof. Polo
Dr. Polo
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Course Registration
• As of 3pm today
• CSE 6242 A
• 186/202 seats filled
• 81/250 waitlist slots taken
• CX 4242 A
• 50/68 seats filled
• 4/100 waitlist slots taken
• CSE 6242 Q (distance-learning): 6 students
This class room seats 300. If you are on the waitlist, please wait for seats to released (some students typically “drop” after today).
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Course TAs Be very very nice to them!
Office hours and locations (TBD) on course homepagepoloclub.gatech.edu/cse6242
Neetha RavishankarJennifer MaMansi MathurArathi ArivayuthamVineet Vinayak PasupuletySiddharth Gulati
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We work with (really) large data.
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Internet50 Billion Web Pages
www.worldwidewebsize.com www.opte.org
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Facebook2 Billion Users
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Citation Network
www.scirus.com/press/html/feb_2006.html#2 Modified from well-formed.eigenfactor.org
250 Million Articles
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TwitterWho-follows-whom (500 million users)
Who-buys-what (120 million users)
cellphone networkWho-calls-whom (100 million users)
Protein-protein interactions200 million possible interactions in human genome
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Many More
Sources: www.selectscience.net www.phonedog.com www.mediabistro.com www.practicalecommerce.com/
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“Big Data” Analyzed
DATA à INSIGHTS
Graph Nodes Edges
YahooWeb 1.4 Billion 6 Billion
Symantec Machine-File Graph 1 Billion 37 Billion
Twitter 104 Million 3.7 Billion
Phone call network 30 Million 260 Million
We also work with small data. Small data also needs love.
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7Number of items an average human
holds in working memory
±2George Miller, 1956
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Data
Insights
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How to do that?
COMPUTATION
+HUMAN INTUITION
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Or, to ride the AI wave…
ARTIFICIAL INTELLIGENCE+
HUMAN INTELLIGENCE
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Both develop methods for making sense of network data
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How to do that?
COMPUTATION INTERACTIVE VISAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of nodes Thousands of nodes
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How to do that?
COMPUTATION INTERACTIVE VISAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of nodes Thousands of nodes
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How to do that?
COMPUTATION INTERACTIVE VISAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of nodes Thousands of nodes
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How to do that?
COMPUTATION INTERACTIVE VISAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of nodes Thousands of nodes
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How to do that?
COMPUTATION INTERACTIVE VISAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of nodes Thousands of nodes
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How to do that?
COMPUTATION INTERACTIVE VISAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of nodes Thousands of nodes
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Our research combines the Best of Both Worlds
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Our Approach for Big Data Analytics
DATA MINING HCIAutomatic User-driven; iterative
Summarization, clustering, classification Interaction, visualization
>Millions of items Thousands of items
Human-Computer Interaction
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Our mission & vision:
Scalable, interactive, usable tools for big data analytics
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“Computers are incredibly fast, accurate, and stupid.
Human beings are incredibly slow, inaccurate, and brilliant.
Together they are powerful beyond imagination.”
(Einstein might or might not have said this.)
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AI Interpretation & Protection Cyber Security
Social Good & HealthLarge Graph Mining & Visualization
Polo Club of Data Science poloclub.github.io
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Course homepage All assignments, slides posted here
poloclub.gatech.edu/cse6242/
Discussion, Q&A, find teammates
Piazza: link available on canvas.gatech.edu
Assignment Submission
Canvas(Use Piazza for discussion)
Logistics
Make sure you’re at the right Piazza!(CSE-6242-O01, CSE-6242-OAN have
their Piazza forums too)
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Course HomepageFor syllabus, HWs, projects, datasets, etc.
Google “cse6242”poloclub.gatech.edu/cse6242/
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• Polo will announce events related to this class and data science in general
• Distinguished lectures
• Seminars
• Hackathons (free food, prizes)
• Company recruitment events (free food, swag)
Important to join Piazza because…
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Course Goals
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What is Data & Visual Analytics?
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What is Data & Visual Analytics?
No formal definition!
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Polo’s definition: the interdisciplinary science of combining computation techniques and interactive visualization to transform and model data to aid discovery, decision making, etc.
What is Data & Visual Analytics?
No formal definition!
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What are the “ingredients”?
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What are the “ingredients”?
Need to worry (a lot) about: storage, complex system design, scalability of algorithms, visualization techniques, interaction techniques, statistical tests, etc.
Wasn’t this complex before this big data era. Why?
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�30http://spanning.com/blog/choosing-between-storage-based-and-unlimited-storage-for-cloud-data-backup/
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What is big data? Why care?Many businesses are based on big data.
Search engines: rank webpages, predict what you’re going to type
Advertisement: infer what you like, based on what your friends like; show relevant ads
E-commerce: recommends movies/products (e.g., Netflix, Amazon)
Health IT: patient records (EMR)
Finance
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Good news! Many jobs!
Most companies are looking for “data scientists”
The data scientist role is critical for organizations looking to extract insight from information assets for ‘big data’ initiatives and requires a broad combination of skills that may be fulfilled better as a team- Gartner (http://www.gartner.com/it-glossary/data-scientist)
Breadth of knowledge is important.This course helps you learn some important skills.
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Collection
Cleaning
Integration
Visualization
Analysis
Presentation
Dissemination
Course Schedule (Analytics Building Blocks)
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Building blocks. Not Rigid “Steps”.
Can skip some
Can go back (two-way street)
• Data types inform visualization design
• Data size informs choice of algorithms
• Visualization motivates more data cleaning
• Visualization challenges algorithm assumptionse.g., user finds that results don’t make sense
Collection
Cleaning
Integration
Visualization
Analysis
Presentation
Dissemination
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• Learn visual and computation techniques and use them in complementary ways
• Gain a breadth of knowledge
• Learn practical know-how by working on real data & problems
Course Goals
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• [50%] 4 homework assignments
• End-to-end analysis
• Techniques (computation and vis)
• “Big data” tools, e.g., Hadoop, Spark, etc.
• [50%] Group project -- 4 to 6 people
• [Bonus points] In-class pop quizzes
• Each quiz is worth 1% course grade
• No exams
Grading
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Policies On website; we go through them now
Grading, plagiarism, collaboration, late submission, and the “warning”
about the difficulty this course
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From Previous Classes…
• Class projects turned into papers at top conferences (KDD, IUI, etc.)
• Projects as portfolio pieces on CV
• Increased job and internship opportunities
• Former students sent me “thank you” notes
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IUI Full conference paper
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KDD Workshop paper
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IUI Poster paper
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“I feel like the concepts from your class are like a rite of passage for an aspiring data scientist. Assignments lead to a feelings of accomplishment and truly progressing in my area of passion.”
“I really get more intuition about how to deal with data with some powerful tools in HW3 [uses AWS]. That feeling is beyond description for me.”
“I would like to say thank you for your class! Thanks to the skills I got from the class and the project, I got the offer.”
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What Polo expects from you
• Actively participate throughout the course!
• Ask questions during class and on Piazza
• Help out whenever you can, e.g., help answer questions on Piazza
• Polo reserves last few minutes of every class for Q&A
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FREE After-class Coffee ☕• After class, Polo randomly selects 5 students
(+2 volunteers) for FREE after-class coffee
• Polo’s treat. You can order coffee, tea, pastries — whatever you want
• Very casual — you can ask me ANYTHING
• Will try doing this at least once a week, starting next week!