Package org.grouplens.lenskit

Examples of org.grouplens.lenskit.Recommender

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    }

    @SuppressWarnings("deprecation")
    @Test
    public void testSlopeOneRecommenderEngineCreate() {
        Recommender rec = engine.createRecommender();

        assertThat(rec.getItemScorer(),
                   instanceOf(SlopeOneItemScorer.class));
        RatingPredictor rp = rec.getRatingPredictor();
        assertThat(rp, instanceOf(SimpleRatingPredictor.class));
        assertThat(((SimpleRatingPredictor) rp).getScorer(),
                   sameInstance(rec.getItemScorer()));
        assertThat(rec.getItemRecommender(),
                   instanceOf(TopNItemRecommender.class));
    }
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    }

    @SuppressWarnings("deprecation")
    @Test
    public void testItemItemRecommenderEngineCreate() {
        Recommender rec = engine.createRecommender();

        assertThat(rec.getItemScorer(),
                instanceOf(ItemItemScorer.class));
        assertThat(rec.getRatingPredictor(),
                instanceOf(SimpleRatingPredictor.class));
        assertThat(rec.getItemRecommender(),
                instanceOf(TopNItemRecommender.class));
        assertThat(rec.getGlobalItemRecommender(),
                instanceOf(TopNGlobalItemRecommender.class));
        assertThat(rec.getGlobalItemScorer(),
                instanceOf(ItemItemGlobalScorer.class));
    }
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    @SuppressWarnings("deprecation")
    @Test
    public void testFunkSVDRecommenderEngineCreate() throws RecommenderBuildException {
        LenskitRecommenderEngine engine = makeEngine();
        Recommender rec = engine.createRecommender();

        assertThat(rec.getItemScorer(),
                   instanceOf(FunkSVDItemScorer.class));
        assertThat(rec.getItemRecommender(),
                   instanceOf(TopNItemRecommender.class));
        RatingPredictor pred = rec.getRatingPredictor();
        assertThat(pred, instanceOf(SimpleRatingPredictor.class));
        assertThat(((SimpleRatingPredictor) pred).getScorer(),
                   sameInstance(rec.getItemScorer()));
        assertThat(((FunkSVDItemScorer) rec.getItemScorer()).getUpdateRule(),
                   nullValue());
    }
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    }

    @SuppressWarnings("deprecation")
    @Test
    public void testItemItemRecommenderEngineCreate() {
        Recommender rec = engine.createRecommender();

        assertThat(rec.getItemScorer(),
                   instanceOf(ItemItemScorer.class));
        assertThat(rec.getRatingPredictor(),
                   instanceOf(SimpleRatingPredictor.class));
        assertThat(rec.getItemRecommender(),
                   instanceOf(TopNItemRecommender.class));
        assertThat(rec.getGlobalItemRecommender(),
                   instanceOf(TopNGlobalItemRecommender.class));
        assertThat(rec.getGlobalItemScorer(),
                   instanceOf(ItemItemGlobalScorer.class));
    }
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    }

    @SuppressWarnings("deprecation")
    @Test
    public void testItemItemRecommenderEngineCreate() {
        Recommender rec = engine.createRecommender();

        assertThat(rec.getItemScorer(),
                   instanceOf(ItemItemScorer.class));
        assertThat(rec.getRatingPredictor(),
                   instanceOf(SimpleRatingPredictor.class));
        assertThat(rec.getItemRecommender(),
                   instanceOf(TopNItemRecommender.class));
        assertThat(rec.getGlobalItemRecommender(),
                   instanceOf(TopNGlobalItemRecommender.class));
        assertThat(rec.getGlobalItemScorer(),
                   instanceOf(ItemItemGlobalScorer.class));
    }
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Related Classes of org.grouplens.lenskit.Recommender

  • org.grouplens.lenskit.knn.item.ItemItemRecommenderBuildTest
  • org.grouplens.lenskit.knn.item.ItemwiseRecommenderBuildTest
  • org.grouplens.lenskit.knn.item.model.NormalizingItemItemRecommenderBuildTest
  • org.grouplens.lenskit.mf.funksvd.FunkSVDRecommenderBuildTest
  • org.grouplens.lenskit.slopeone.SlopeOneItemRecommenderTest
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