#hmm

Question 1: Select all that apply

mediumAI-checkedProbabilistic & Graphical Models

An HMM models a person's mood (hidden states: happy, sad) from the activity they are observed doing (learn, eat, cry, social media). Which statements are true? Select all that apply.

The emission probabilities give the probability of being happy or sad given the observed activity1
The observation at time $t$ is conditionally independent of earlier observations and earlier hidden states, given the hidden state at time $t$ 2
Given the hidden state at time $t-1$ , the hidden state at time $t$ is conditionally independent of the earlier hidden states and observations3
Each hidden state has a probability distribution over all possible observations4

Timed test