function [engine, loglik] = enter_evidence(engine, evidence, varargin)% ENTER_EVIDENCE Add the specified evidence to the network (jtree_online)% [engine, loglik] = enter_evidence(engine, evidence, ...)%% evidence{i,t} = [] if if X(i,t) is hidden, and otherwise contains its observed value (scalar or column vector)%% The following optional arguments can be specified in the form of name/value pairs:% [default value in brackets]%% maximize - if 1, does max-product instead of sum-product [0]%engine.maximize = 0;args = varargin;for i=1:2:length(args)  switch args{i}   case 'maximize', engine.maximize = args{i+1};   otherwise, error(['unrecognized argument ' args{i}])  endend[engine, loglik] = offline_smoother(engine, evidence);