wolffd@0: function [b, mpe] = backT_mpe(engine, f, ev2, t)
wolffd@0: 
wolffd@0: bnet = bnet_from_engine(engine);
wolffd@0: ss = bnet.nnodes_per_slice;
wolffd@0: 
wolffd@0: if t==1
wolffd@0:   % ev2 is just the evidence on slice 1
wolffd@0:   [mpe, b.clpot] = find_max_config(engine.jtree_engine1, f.clpot, f.seppot, ev2);
wolffd@0: else
wolffd@0:   [mpe, b.clpot] = find_max_config(engine.jtree_engine, f.clpot, f.seppot, ev2);
wolffd@0:   mpe = mpe((1:ss)+ss); % extract values for slice 2
wolffd@0: end
wolffd@0: for c=1:length(b.clpot)
wolffd@0:   [b.clpot{c}, ll(c)] = normalize_pot(b.clpot{c});
wolffd@0: end
wolffd@0: b.t = t;