wolffd@0: function [f, logscale] = fwd1(engine, ev, t)
wolffd@0: % Forwards pass for slice 1.
wolffd@0: 
wolffd@0: bnet = bnet_from_engine(engine);
wolffd@0: ss = bnet.nnodes_per_slice;
wolffd@0: 
wolffd@0: CPDpot = cell(1,ss);
wolffd@0: for n=1:ss
wolffd@0:   fam = family(bnet.dag, n, 1);
wolffd@0:   e = bnet.equiv_class(n, 1);
wolffd@0:   CPDpot{n} = convert_to_pot(bnet.CPD{e}, engine.pot_type, fam(:), ev);
wolffd@0: end       
wolffd@0: f.t = t;
wolffd@0: f.evidence = ev;
wolffd@0: 
wolffd@0: pots = CPDpot;
wolffd@0: slice1 = 1:ss;
wolffd@0: CPDclqs = engine.clq_ass_to_node1(slice1);
wolffd@0: 
wolffd@0: [f.clpot, f.seppot] =  init_pot(engine.jtree_engine1, CPDclqs, CPDpot, engine.pot_type, engine.observed1);
wolffd@0: [f.clpot, f.seppot] = collect_evidence(engine.jtree_engine1, f.clpot, f.seppot);
wolffd@0: for c=1:length(f.clpot)
wolffd@0:   [f.clpot{c}, ll(c)] = normalize_pot(f.clpot{c});
wolffd@0: end
wolffd@0: logscale = ll(engine.root1);
wolffd@0: