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ml-recall

#impossible-sequences

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Question 1: Single choice

mediumAI-checkedTime Series

A two-state HMM starts in state 1 or 2 with probability 1/21/2 each. State 1 stays in state 1 with probability 0.99 and moves to state 2 with probability 0.01; state 2 always stays in state 2. The output distributions over the symbols {1,2,3,4}\{1, 2, 3, 4\} are:

state P(1)P(1) P(2)P(2) P(3)P(3) P(4)P(4)
1 0 0.199 0.8 0.001
2 0.1 0 0.7 0.2

Which output sequence of length 2 can not be generated by this HMM?

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