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How do you identify important variables while working on a data set in machine learning?

By Albert, 2 years ago
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how to select variable for performing operations on data set?Which variable is important for better prediction.

Data set
Machine learning
1 Answer

There are various means to select important variables from a data set that include the following:

  1. Identify and discard correlated variables before finalizing on important variables
  2. Use visualization for better understanding of correlation.
  3. The variables could be selected based on ‘p’ values from Linear Regression
  4. Forward, Backward, and Step wise selection
  5. Lasso Regression
  6. Random Forest and plot variable chart
  7. Top features can be selected based on information gain for the available set of features.

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