Package org.grouplens.lenskit.inject

Examples of org.grouplens.lenskit.inject.RecommenderInstantiator

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        Preconditions.checkState(recommender == null, "recommender already built");
        logger.debug("Starting recommender build");
        DAGNode<Component, Dependency> graph;
        if (cache == null) {
            logger.debug("Building directly without a cache");
            RecommenderInstantiator ri = RecommenderInstantiator.create(recommenderGraph);
            graph = ri.instantiate();
        } else {
            logger.debug("Instantiating graph with a cache");
            try {
                Set<DAGNode<Component, Dependency>> nodes = GraphtUtils.getShareableNodes(recommenderGraph);
                logger.debug("resolving {} nodes", nodes.size());
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        RecommenderGraphBuilder rgb = new RecommenderGraphBuilder();
        rgb.setClassLoader(classLoader);
        for (Pair<LenskitConfiguration,ModelDisposition> cfg: configurations) {
            rgb.addConfiguration(cfg.getLeft());
        }
        RecommenderInstantiator inst;
        try {
            inst = RecommenderInstantiator.create(rgb.buildGraph());
        } catch (ResolutionException e) {
            throw new RecommenderBuildException("Cannot resolve recommender graph", e);
        }
        DAGNode<Component, Dependency> graph = inst.instantiate();

        graph = rewriteGraph(graph);

        boolean instantiable = GraphtUtils.getPlaceholderNodes(graph).isEmpty();
        return new LenskitRecommenderEngine(graph, instantiable);
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     */
    public static void renderGraph(DAGNode<Component,Dependency> graph,
                                   File graphvizFile) throws IOException, RecommenderBuildException {
        logger.debug("graph has {} nodes", graph.getReachableNodes().size());
        logger.debug("simulating instantiation");
        RecommenderInstantiator instantiator = RecommenderInstantiator.create(graph);
        DAGNode<Component, Dependency> unshared = instantiator.simulate();
        logger.debug("unshared graph has {} nodes", unshared.getReachableNodes().size());
        Closer close = Closer.create();
        try {
            Writer writer = close.register(new FileWriter(graphvizFile));
            GraphWriter gw = close.register(new GraphWriter(writer));
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Related Classes of org.grouplens.lenskit.inject.RecommenderInstantiator

  • org.grouplens.lenskit.core.LenskitRecommenderEngineBuilder
  • org.grouplens.lenskit.eval.graph.GraphDumper
  • org.grouplens.lenskit.eval.traintest.LenskitEvalJob
  • org.grouplens.lenskit.RecommenderBuildException
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