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Gang Tao
March 30, 2016
Technology
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Regression
A simple introduction of regression analysis
Gang Tao
March 30, 2016
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Transcript
Regression
Regression to Mediocrity
Regression towards mean
Eccentricity - Correlation
No Correlation = No Relationship
What does correlation mean?
A Use Case ⾼高⾎血压 糖尿病 没病
Regression Analysis Relationship Variables X : Independant Variables (predictor) Y
: dependant Variables B : Unknown parameters Y = f(B,X)
Linear Regress ( Ordinary Least Squares ) 0 40 80
120 160 0 35 70 105 140
Story of Ceres
Demo Wine Predict
Logistic Regression
Confusion Matrix Sensitivity = TP/( TP + FN) Specificity =
TN/( TN + FP)
Demo Predict Election