title: what is the definition of "flexibility" of a method in Machine Learning?
body: <p>I want to find the definition of "flexibility" of a method in machine learning, just like Lasso, SVM, Least Squares.
  here is a representation of the tradeoff between flexibility and interpretability.</p>
  
  <p>And I also think flexibility is a detailed numerical thing.
  Because of my reputation, I cannot upload the pictures. If you want to know some details, you can read <em>An Introduction to Statistical Learning</em>, the pictures are on page 25 and page 31.</p>
  
  <p>Thank you.</p>