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GETTING STARTED WITH ! DATA SCIENCE Speaker Series! September 27, 2016! SEBASTIAN RASCHKA

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DATA SCIENCE?! Data Scientist (n.): Person who is better at statistics than any software engineer and better at software engineering than any statistician. "Data Scientist" is a Data Analyst who lives in California. − @nivertech! − Josh Wills (Cloudera)!

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DREW CONWAY’S CLASSIC!

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[https://www.quora.com/How-did-the-term-Data-Science-come-about/answer/Jeff-Hammerbacher] POPULARIZED THE TERM ~2008

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“Rachel’s data science profile, which she created to illustrate trying to visualize oneself as a data scientist;”! ! From: Cathy O'Neil & Rachel Schutt. “Doing Data Science!

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From: Cathy O'Neil & Rachel Schutt. ! “Doing Data Science!

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Machine Learning?

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What is Machine Learning?! 8 Outputs ! (labels)! Inputs ! (observations)! Computer! Program! Spam/Non-Spam! Labels! Emails! Classification Algorithm! Spam Filter!

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What can Machine Learning do for us?! https://commons.wikimedia.org/wiki/ File:Google_self_driving_car_at_the_Googleplex.jpg! h$ps://flic.kr/p/5BLW6G [CC BY 2.0] Photo by Michael Shick, CC BY-SA 4.0!

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3 Types of Learning! 10 Reinforcement! Supervised! Unsupervised!

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Working with Labeled Data 11 Supervised Learning! ?! x (“input”) y (“output”) x1 (“input”) x2 (“input”) ?! Regression Classification

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Working with Unlabeled Data 12 Unsupervised Learning! Clustering Compression

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GETTING STARTED WITH ! DATA SCIENCE

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þ READING (/ CLASSES)!! þ DOING!! þ COMMUNICATING!!

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New Concept/ Technique/ Algorithm! Apply/! Implement/! Write/! Share/! Get Feedback!

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New Concept/ Technique/ Algorithm! Apply/! Implement/! Write/! Share/! Get Feedback!

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Curiosity/ Interesting datasets! Exploration/! Insights! Write/! Share/! Get Feedback!

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Curiosity/ Interesting datasets! Exploration/! Insights! Write/! Share/! Get Feedback!

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From The Art of Data Science by Roger D. Peng and Elizabeth Matsui! https://leanpub.com/artofdatascience! EPICYCLES OF ANALYSIS!

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A few years back ...

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Position gameday Name Salary GameInfo 478 GK 1 Adrian 4900 WHU@SUN 10:00AM ET 280 M 1 Wes Hoolahan 4400 LEI@NOR 10:00AM ET 309 D 1 Cedric 4200 SOU@CHE 12:30PM ET 480 M 1 Cheikhou Kouyate 5300 WHU@SUN 10:00AM ET 25 D 1 Jordan Amavi 4500 STK@AVL 10:00AM ET 142 M 1 Riyad Mahrez 10100 LEI@NOR 10:00AM ET 143 F 1 Jamie Vardy 9000 LEI@NOR 10:00AM ET 334 F 1 Mame Diouf 6400 STK@AVL 10:00AM ET

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Some Interesting Project Ideas ...

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WINE-O.AI: ! Computer Vision Assisted Wine Recommendations!

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h$p://joelgrus.com/2016/05/23/fizz-buzz-in-tensorflow/ Fizz Buzz in Tensorflow!

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http://pomegranate.readthedocs.io/en/latest/! Pomegranate: fast and flexible probabilistic models in Python!

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WHY PROJECTS?

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What are the TOOLS?!

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“R is a programming language developed by statisticians for statisticians; Python was developed by a computer scientist, and it can be used by programmers to apply statistical techniques.”

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The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again. The image cannot be displayed. Your computer may not have enough memory to open the image, or the image may have been corrupted. Restart your computer, and then open the file again. If the red x still appears, you may have to delete the image and then insert it again. The image cannot be displayed. Your computer may not have enough memory to

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From: Scott Chacon. “Pro Git.”

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From: Scott Chacon. “Pro Git.”

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from https://guides.github.com/introduction/flow/index.html

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KEEPING UP TO DATE & EXCHANGING IDEAS/TIPS

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h$ps://news.ycombinator.com h$ps://github.com/rushter/data-science-blogs

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RESOURCES

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Save the Date!

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But the most important thing is to keep on learning. Not just for a few months, but for years. Every Saturday, you will have a choice between staying at home and reading research papers/implementing algorithms, vs. watching TV. If you spend all Saturday working, there probably won't be any short-term reward, and your current boss won't even know or say "nice work." Also, after that Saturday of hard work, you're not actually that much better at machine learning. But here's the secret: If you do this not just for one weekend, but instead study consistently for a year, then you will become very good. There's a lot of demand today for ML people; once you get a job in ML, your learning will only accelerate further. Andrew Ng, Chief Scientist at Baidu; ! Chairman/Co-Founder of Coursera; Stanford faculty! https://www.quora.com/How-should-you-start-a- career-in-Machine-Learning/answer/Andrew-Ng!

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https://github.com/rasbt mail@sebastianraschka.com http://sebastianraschka.com @rasbt