Review Final Exam | Baamboozle - Baamboozle | The Most Fun Classroom Games!

English 19 Public

It is about CS331

Study Slideshow

In PCA, what does the first principal component maximize?

Variance

K-means is what type of learning?

Unsupervised

What is the main goal of PCA?

PCA reduces dimensions while preserving maximum variance.

What does K represent in K-means?

If K increases, WCSS(cost function) usually:

Decreases

What happens first in K-means?

Assign points

MDP stands for:

Markov Decision Process

Which are components of an MDP?

States, Actions, Rewards

What does transition function T(s,a,s') represent?

Probability of moving to state s′ after action a in state s.

What does γ (gamma) represent?

Discount factor

If γ = 0, the agent cares about:

Immediate reward only

Policy iteration consists of:

Policy evaluation + policy improvement

If Q(s,a) values are: Left = 3 Right = 7 Up = 5 What action will policy choose?

Right

How is a centroid updated in K-means?

By taking the mean of all assigned points.

Why can K-means give different results on the same dataset?

Random centroid initialization.

What is a terminal state?

A state where the episode ends.