wolffd@0: function [transprob, termprob] = remove_hhmm_end_state(A)
wolffd@0: % REMOVE_END_STATE Infer transition and termination probabilities from automaton with an end state
wolffd@0: % [transprob, termprob] = remove_end_state(A)
wolffd@0: % A(i,k,j) = Pr( i->j | Qps=k), where i in 1:Q, j in 1:(Q+1), and Q+1 is the end state
wolffd@0: 
wolffd@0: if ndims(A)==2 % top level
wolffd@0:   Q = size(A,1);
wolffd@0:   transprob = A(:,1:Q);
wolffd@0:   termprob = A(:,Q+1)';
wolffd@0:   
wolffd@0:   % rescale
wolffd@0:   for i=1:Q
wolffd@0:     for j=1:Q
wolffd@0:       denom = (1-termprob(i));
wolffd@0:       denom = denom + (denom==0)*eps;
wolffd@0:       transprob(i,j) = transprob(i,j) / denom;
wolffd@0:     end
wolffd@0:   end    
wolffd@0: else
wolffd@0:   Q = size(A,1);
wolffd@0:   Qk = size(A,2);
wolffd@0:   transprob = A(:, :, 1:Q);
wolffd@0:   termprob = A(:,:,Q+1)';
wolffd@0: 
wolffd@0:   % rescale
wolffd@0:   for k=1:Qk
wolffd@0:     for i=1:Q
wolffd@0:       for j=1:Q
wolffd@0: 	denom = (1-termprob(k,i));
wolffd@0: 	denom = denom + (denom==0)*eps;
wolffd@0: 	transprob(i,k,j) = transprob(i,k,j) / denom;
wolffd@0:       end
wolffd@0:     end    
wolffd@0:   end
wolffd@0:   
wolffd@0: end
wolffd@0: