wolffd@0: function engine = set_params(engine, varargin)
wolffd@0: % SET_PARAMS Set the parameters (fields) for a belprop_inf_engine object
wolffd@0: % engine = set_params(engine, name/value pairs)
wolffd@0: %
wolffd@0: % The following optional arguments can be specified in the form of name/value pairs:
wolffd@0: % e.g., engine = set_params(engine, 'tol', 1e-2, 'max_iter', 10)
wolffd@0: %
wolffd@0: % max_iter - max. num. loopy iterations 
wolffd@0: % momentum - weight assigned to old message in convex combination 
wolffd@0: % tol - tolerance used to assess convergence 
wolffd@0: % maximize - 1 means use max-product, 0 means use sum-product
wolffd@0: 
wolffd@0: args = varargin{1};
wolffd@0: nargs = length(args);
wolffd@0: for i=1:2:nargs
wolffd@0:   switch args{i},
wolffd@0:    case 'max_iter', engine.max_iter = args{i+1};
wolffd@0:    case 'momentum', engine.momentum = args{i+1};
wolffd@0:    case 'tol',      engine.tol = args{i+1};
wolffd@0:    case 'maximize', engine.maximize = args{i+1};
wolffd@0:    otherwise,
wolffd@0:     error(['invalid argument name ' args{i}]);
wolffd@0:   end
wolffd@0: end