Mid II Quiz

Which of the following is an unsupervised learning algorithm?

• Decision tree

• K-means clustering

• Support Vector Machines (SVM)

• Random Forest

In unsupervised learning, the training dataset consists of:

• Output labels only

• None of the above

• Input features and output labels

• Input features only

Which unsupervised learning algorithm is used for dimensionality reduction?

• Linear Regression

• Naive Bayes

• Decision tree

• Principal Component Analysis (PCA)

Which unsupervised learning algorithm is used for outlier detection?

• Logistic Regression

• Decision tree

• Isolation Forest

• Support Vector Machines (SVM)

Which algorithm is used for finding similar items or grouping similar data points together?

• Support Vector Machines (SVM)

• Random Forest

• K-means clustering

• Nearest Neighbors

Which unsupervised learning algorithm is used for market basket analysis?

• Apriori algorithm

• Decision tree

• Naive Bayes

• Linear Regression

Which algorithm is used for recommendation systems?

• Multinomial Logistic Regression

• Decision tree

• Linear Regression

• Collaborative Filtering

Which unsupervised learning algorithm is used for density estimation?

• Gaussian Mixture Models (GMM)

• Linear Regression

• Decision tree

• Support Vector Machines (SVM)

Which algorithm is used for clustering data points based on their density?

• K-means clustering

• Nearest Neighbors

• DBSCAN

• Support Vector Machines (SVM)

Which unsupervised learning algorithm is used for document topic modeling?

• Decision tree

• Linear Regression

• Support Vector Machines (SVM)

• Latent Dirichlet Allocation (LDA)