Factor Based ModelsWhy limit number of factors in a model? 2 reasonsClassical variable selection
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approaches
Backward elimination
Forward selection
Stepwise regression
Ways of determining if factors are good enough in variable selection
Greedy algorithm
Global variable selection approaches
LASSO
Elastic Net
Ridge Regression
Design of Experiments (DOE)
A/B testing
(Full) Factorial Design
Fractional Factorial Design
What approach to take if it is believed the factors we can change are independent? (Factorial design)
Exploration vs. Exploitation
Multi-Armed
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