7. What is data science?
Data
Data Science Process
Knowledge/Product
8. What is data science?
Data Science
• Statistic
• Math
• ……
• Software engineer
• social
• heath care
• finance
• ….
Knowledge/Product
• Fraud detection
• Product Recommendation
• Frequency common purchase product
• Influencer customer
• ……
9. What does data scientist do?
Data Scientist
Data Scientist
Data Scientist
21. What is Machine Learning?
“Field of study that gives computers the ability to learn
without being explicitly programmed”
- Arthur Samuel, 1959
22. How is Machine Learning different from traditional
programming?
23. How is Machine Learning different from traditional
programming?
if (eyes == 2) & (legs == 4) & (tail == 1)… then
print “Cat”
“ Cat ”
Traditional programming
Input
Program
Computer
Output
- eyes
- legs
- tail
- …..
- …..
24. How is Machine Learning different from traditional
programming?
if (eyes == 2) & (legs == 4) & (tail == 1)… then
print “Cat”
“ Cat ”
Traditional programming
Input
Program
Computer
Output
- eyes
- legs
- tail
- …..
- …..
25. How is Machine Learning different from traditional
programming?
“ Cat ”
Machine Learning
Input
Program
Computer
Output
Cat Recognition
- eyes
- legs
- tail
- …..
- …..
26. How does it work?
Feature
Extraction
Learning
Algorithm
Evaluation
Optimization
Data
Model
Error
Predicted Value = f(X)
We need f that Predicted Value close to True Value
(X)
(f)
Learning Process
Parameters