Question $1$

$($a$)$

First, start by using the following stadnard HMM model

which of the following assumptions are made by above HMM model?

$x_{i-1}{x}_{i+1}|x_i,$AAi

None

$x_i{Y}_{i+1}|x_{i+1},$AAi

$x_i{Y}_j,$AAi$j$

$x_i{x}_j,$AAi$j$

$Y_i{Y}_j,$AAi$j$

Question $2$

modified HMM:

Which of the following assumptions are made by the above modified HMM

model?

None

$Q{x}_i|Y_i$AAi

$x_i{Y}_j,$AAi$j$