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Johann Petrak
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Profile Information

My Website or LinkedIn Profile (URL):
http://at.linkedin.com/in/johannpetrak
Field of Expertise:
Predictive Modeling, Data Mining, Artificial Intelligence, Other
Years of Experience in Analytical Role:
10
Professional Status:
Technical, Other
Interests:
Finding a New Position, Networking

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Top Content 

1 How to develop churn prediction model for telecom company?

How to develop churn prediction model for telecom company?
2 Map of Data Science University Programs

Map of Data Science University Programs
3 Use PRESS, not R squared to judge predictive power of regression

Use PRESS, not R squared to judge predictive power of regression
4 Text mining: alternative to Wordflex?

Text mining: alternative to Wordflex?
5 Audience expansion

Audience expansion
6 Simple solutions to make videos with R

Simple solutions to make videos with R
7 Strategy for building a “good” predictive model

Strategy for building a “good” predictive model
8 The End of Theory: The Data Deluge Makes the Scientific Method Obsolete | Wired

The End of Theory: The Data Deluge Makes the Scientific Method Obsolete | Wired
9 Is Open Source Really Free?

Is Open Source Really Free?
10 Understanding the Kalman Filter Application in Economic Time Series Data

Understanding the Kalman Filter Application in Economic Time Series Data

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