Big Data: week 5

What function is helpful for creating categorical predictors?
- get_dummies()
- from pandas
What is the idea for cross-validation?

Instead of splitting it once, we could split the data multiple ways and average the results!
What is a common way to use cross validation?
- Common forms for cross validation are 5-fold or 10-fold to assess a predictive model
How can you plot categorical variables with different slopes?
- create an interaction!
If your categorical variable has more than two categories, how do you define the additional variables?
Main effect
- The main effect for two predictors fits the best plane through the data
How do you include categorical variables in a multiple regression model?

can also include categorical variables through dummy or indicator variables
Interaction effects

Interaction effects allow for the effect of one variable to depend on the value of another

Author

saucyocelot

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Card Set

Big Data: week 5

Description

Week 5: modeling

Updated

2023-09-26T03:22:27Z

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