We don’t see state
Each state produces a visible output. this output is drawn from a distribution for each state.
We observe a sequence of outputs, not states.
Assume we know transition matrix. and starting probls
Given we observe sequence of outputs, what were most likely actual paths?
Virbiti returns this
Given we have observed outputs, what is the chance of being in a certain state at a certain time?
We calculate state x at time t given all obs.