Question on forwardbackward

@ericgermaining in regard to your question here

Line 53 in 3c0919e

    
           # QUESTION: 'bwd' does NOT make use of 'fv' from 'fwd' unlike in the paper.  The interaction between 'fv' and 'b'

I realize that this is not the most intuitive forward backward implementation, one because probTran is outside the scope of forwardbackward. I do that to not recalculate probTran when creating the probJointStates in here

traveltimeHMM/R/traveltimeHMM.R

Line 189 in 0b38a25

probJointStates = normalizeR(alpha[-nObs, rep(1:nQ, each = nQ)] *

.

One possible way to make it more intuitive, maybe to create a function like est_state_prob in this function we calculate probTran, pass it to forward and return back probStates and probJointStates? what do you think?

Also I want to confirm did you find any methodological issue in this implementation, other than the scope of forwardback?

@melmasri As an answer to your question: I did not find any further problem. I guess we can close the issue. I transferred your code to the review-stuff branch.