Question: We apply the Expectation Maximization algorithm to ( , , ) where denotes the data, denotes the hidden variables and the variables we seek to

We apply the Expectation Maximization algorithm to (,,)
where
denotes the data,
denotes the hidden variables and
the variables we seek to optimize. Which of the following are correct?
EM will always return the same solution which may not be optimal
EM will always return the same solution which must be optimal
The solution depends on the initialization

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