Getting into Data Science @ HisarCS 2021

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Getting into Data Science @MarcoBonzanini Hisar Coding Summit 2021

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Nice to meet you • Data Science consultant: Natural Language Processing, Machine Learning, Data Engineering • Corporate training: Python + Data Science • PyData London chairperson 2

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My Goals for Today • Answer some questions: What is Data Science? What do Data Scientists do? (and more) • Inspire some of you to learn more about Data Science 3

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WHAT IS DATA SCIENCE

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Data Value 🦄 7

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Data Value 🦄 ??? 8

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Value Insights Decision making Data products { 9

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Data Value 🦄 ??? 13

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Coding Math Modelling Visualisation Reporting { 🦄 14

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Source: Doing Data Science (Cathy O’Neil & Rachel Schutt, 2013) Raw  Data Processing  Data Clean  Data Exploratory  Analysis Models &  Algorithms Communicate  Visualise  Report Data  Product Decision  Making 15

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Source: https://medium.com/hackernoon/the-ai-hierarchy-of-needs-18f111fcc007 16

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Source: http://drewconway.com/zia/2013/3/26/the-data-science-venn-diagram 17

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Computer Science? 18

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Software Engineering? 19

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Business Intelligence? 20

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Do you need 3 PhD? 21

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🤝 Computer  Science Statistics Domain Expertise 22

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ARE WE ALL DATA SCIENTISTS?

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Source: https://medium.com/hackernoon/the-ai-hierarchy-of-needs-18f111fcc007 24

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25 Software Engineers Data Engineers

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26 ML Engineers

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27 Data Analysts  Business Analysts

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28 Data Scientists

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29 Research Scientists

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30 Data Scientists  at small corp

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DATA SCIENCE APPLICATIONS

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Weather 32

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33 https://www.youtube.com/watch?v=_3sVA-_zIrc

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Healthcare 34

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35 https://www.youtube.com/watch?v=B5n8Uavhl00

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Biology 36

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37 https://www.youtube.com/watch?v=_9x4cmQWZ6g

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Journalism 38

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39 https://www.youtube.com/watch?v=yPJhj855tvQ

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Product Recommendations 40

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41 https://www.youtube.com/watch?v=qpbELUmbDIk

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Other Cool Stuff 42

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43 https://www.youtube.com/watch?v=3k96HLqvhc0

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44 https://www.youtube.com/watch?v=S9PcPbtTcPc

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45 https://www.youtube.com/watch?v=UzGZtgu3PBM

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DATA SCIENCE SKILLS

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Getting into Data Science 47

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Getting into Data Science 48 You 🦄 Data Scientist

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Getting into Data Science 49 You 🦄 Data Scientist What they tell you

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Getting into Data Science 50 You 🦄 Data Scientist How it feels like

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Getting into Data Science 51 “It depends”

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Getting into Data Science 52 Where are you? Where do you want to go?

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🤝 Computer  Science Statistics Domain Expertise 53

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Computer Science 54

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Computer Science 55 • Basic coding in 1 language (e.g. Python) • Data Manipulation • Optional: out-of-the-box Machine Learning • Database technologies (e.g. SQL, NoSQL, etc) • “Behind the scenes” of Machine Learning • More programming languages (R, Scala, …), data processing tools (Spark, Elasticsearch, …), and other shiny toys Start Next

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Math / Stats 56

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Math / Stats 57 • Basic descriptive statistics • Data visualisation techniques • Linear algebra (vector/matrix computation) • Calculus • Mathematical optimisation • More advanced probability / stats Start Next

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Domain Expertise 58

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Domain Expertise 59 • Speak the language • Basic data analysis • Deeper domain understanding • Communicate with business stakeholders (non-technical roles) Start Next

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Soft Skills 60

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Soft Skills • They should be called “Core Skills” really • Communication • Story telling • Problem solving • Learning to learn 61

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What’s Next 62

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What’s Next 1. Find a topic you like 2. Find a dataset about the topic * 3. 63 🦄 * links at the end

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SUMMARY

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Summary • Data Science lets you work in any domain • What kind of data scientist do you want to be? • You don’t need to be an expert in everything 65

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Resources • Datasets: kaggle.com • Datasets: archive.ics.uci.edu • Datasets: “awesome data” on GitHub.com • Book: Doing Data Science (O’Neil and Schute) • Videos: youtube.com/user/PyDataTV 66

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Thank You • Twitter: @MarcoBonzanini • Blog: marcobonzanini.com • Newsletter: marcobonzanini.com/newsletter • Questions? 67