Machine Learning II: Linear Model Selection to Unsupervised Learning
13 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which method is used for shrinking the estimated coefficients towards zero to reduce variance?

  • Polynomial regression
  • Linear regression
  • Ridge Regression (correct)
  • Best subset selection

In machine learning, what is the purpose of subset selection?

  • Removing outliers from the data
  • Selecting the best predictors from a pool (correct)
  • Reducing variance
  • Increasing model complexity

Which technique is NOT associated with linear model selection and regularization?

  • K-means clustering (correct)
  • Cross-validation
  • Feature selection
  • Principle Components Analysis (PCA)

What does the Lasso method primarily focus on in machine learning?

<p>Selecting a subset of predictors (D)</p> Signup and view all the answers

Which technique is used for dimension reduction in machine learning?

<p>Principle Components Analysis (PCA) (B)</p> Signup and view all the answers

What is the main benefit of using Ridge Regression over ordinary linear regression?

<p>Reduction of variance and overfitting (A)</p> Signup and view all the answers

In machine learning, which method is primarily used for selecting a subset of predictors?

<p>Best subset selection (B)</p> Signup and view all the answers

What is the main difference between Ridge Regression and Lasso in the context of machine learning?

<p>Ridge Regression shrinks all coefficients equally, whereas Lasso can shrink some coefficients to zero. (D)</p> Signup and view all the answers

Which method in machine learning involves shrinking the estimated coefficients towards zero to reduce model variance?

<p>Lasso (D)</p> Signup and view all the answers

What is the primary goal of feature selection techniques in machine learning?

<p>To identify the most important predictors for the model (B)</p> Signup and view all the answers

Among the options, which technique is commonly used for unsupervised learning in machine learning?

<p>Hierarchical clustering (D)</p> Signup and view all the answers

Which method is employed in machine learning to reduce the number of dimensions in a dataset?

<p>Principle Components Analysis (PCA) (A)</p> Signup and view all the answers

'Shrinkage' in machine learning models typically refers to what action?

<p>Reducing the magnitude of coefficients towards zero (B)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser