Machine Learning - Study Mode
[#156] In which of the following cases will K-Means clustering fail to give good results? 1. Data points with outliers 2. Data points with different densities 3. Data points with round shapes 4. Data points with non-convex shapes
Correct Answer
(D) 1, 2 and 4
(H) 1, 2 and 4
[#157] A person trained to interact with a human expert in order to capture their knowledge.
Correct Answer
(D) knowledge extractor
(H) knowledge extractor
[#158] In many classification problems, the target . . . . . . . . is made up of categorical labels which cannot immediately be processed by any algorithm.
Correct Answer
(B) dataset
(F) dataset
[#159] What is PCA, KPCA and ICA used for?
Correct Answer
(D) all above
(H) all above
[#160] Which of the following can be one of the steps in stacking? 1. Divide the training data into k folds 2. Train k models on each k-1 folds and get the out of fold predictions for remaining one fold 3. Divide the test data set in "k" folds and get individual fold predictions by different algorithms
Correct Answer
(A) 1 and 2
(E) 1 and 2