String searchStr = holder.getString("SEARCH", false, "k2");
String estimatorStr = holder.getString("ESTIMATOR", false, "simple");
String initStr = holder.getString("INIT", false, "naive");
BayesSearch search;
BayesEstimator estimator;
BayesianInit init;
if( searchStr.equalsIgnoreCase("k2")) {
search = new SearchK2();
} else if( searchStr.equalsIgnoreCase("none")) {