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What is Data Science

Data Science: Jordan Boyd-GraberUniversity of MarylandJANUARY 12, 2018

Data Science: Jordan Boyd-Graber | UMD What is Data Science | 1 / 11

Mathematical Foundations

Data

X

Answers

Y

Hidden Structure

Z

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Will NetFlix user 24601 like Transformers?

Data Science: Jordan Boyd-Graber | UMD What is Data Science | 3 / 11

Will NetFlix user 24601 like Transformers?

Data Science: Jordan Boyd-Graber | UMD What is Data Science | 4 / 11

How do you know?

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100,000+  Titles  

~10  Million  Ac

coun

ts  

Training  Data  

Tes,ng  Data  

?  (most  recent  

ra>ngs)  

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Group many images and determine the number of groups

Data Science: Jordan Boyd-Graber | UMD What is Data Science | 6 / 11

Which genes are associated with a disease? How can expression values be

used to predict survival?

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Is it likely that this stock was traded based on illegal insider information?

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Who will vote and for whom?

Data Science: Jordan Boyd-Graber | UMD What is Data Science | 9 / 11

Is this spam?

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Dear Beloved,

My name is Mrs. Susan Polla, from ITALY. If you are a christian andinterested in charity please reply me at : (s.polla@yahoo.fr) for insight.Respectfully,Mrs Susan Polla.

Data Science: Jordan Boyd-Graber | UMD What is Data Science | 10 / 11

Where are the faces?

STAT 151B

AdministrativeInfo

Introduction

Example: face detection

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9:;/31</-8,=%$/0>=806%?$4@=/A%/8%,=B%CDE

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Data contain patternsthat can help us solve problems.

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