LenskitRecommender recommender;
@Before
public void createRecommender() throws RecommenderBuildException {
LenskitConfiguration config = new LenskitConfiguration();
config.addRoot(ItemDAO.class);
config.bind(ItemDAO.class).to(FixedItemDAO.class);
config.bind(EventDAO.class).to(EventCollectionDAO.create(Collections.<Rating>emptyList()));
recommender = LenskitRecommender.build(config);
}