public void TestItemLoad()
{
DataModel model = CreateModel();
ItemCorrelation itemCorrelation = new PearsonCorrelation(model);
var recommender = new CachingRecommender(new GenericItemBasedRecommender(model, itemCorrelation));
DoTestLoad(recommender, 60);
}
public void TestSlopeOneLoad()
{
DataModel model = CreateModel();
Taste.Recommender.Recommender recommender = new CachingRecommender(new SlopeOneRecommender(model));
DoTestLoad(recommender, 30);
}
public void TestItemLoad()
{
DataModel model = CreateModel();
ItemCorrelation itemCorrelation = new PearsonCorrelation(model);
var recommender = new CachingRecommender(new GenericItemBasedRecommender(model, itemCorrelation));
DoTestLoad(recommender, 60);
}
public void TestUserLoad()
{
DataModel model = CreateModel();
UserCorrelation userCorrelation = new PearsonCorrelation(model);
userCorrelation.PreferenceInferrer = new AveragingPreferenceInferrer(model);
UserNeighborhood neighborhood = new NearestNUserNeighborhood(10, userCorrelation, model);
var recommender =
new CachingRecommender(new GenericUserBasedRecommender(model, neighborhood, userCorrelation));
DoTestLoad(recommender, 20);
}
public void TestUserLoad()
{
DataModel model = CreateModel();
UserCorrelation userCorrelation = new PearsonCorrelation(model);
userCorrelation.PreferenceInferrer = new AveragingPreferenceInferrer(model);
UserNeighborhood neighborhood = new NearestNUserNeighborhood(10, userCorrelation, model);
var recommender =
new CachingRecommender(new GenericUserBasedRecommender(model, neighborhood, userCorrelation));
DoTestLoad(recommender, 20);
}
public void testRecommender()
{
var mockRecommender = new MockRecommender(0);
IRecommender cachingRecommender = new CachingRecommender(mockRecommender);
cachingRecommender.Recommend(1, 1);
Assert.AreEqual(1, mockRecommender.recommendCount);
cachingRecommender.Recommend(2, 1);
Assert.AreEqual(2, mockRecommender.recommendCount);
cachingRecommender.Recommend(1, 1);
Assert.AreEqual(2, mockRecommender.recommendCount);
cachingRecommender.Recommend(2, 1);
Assert.AreEqual(2, mockRecommender.recommendCount);
cachingRecommender.Refresh(null);
cachingRecommender.Recommend(1, 1);
Assert.AreEqual(3, mockRecommender.recommendCount);
cachingRecommender.Recommend(2, 1);
Assert.AreEqual(4, mockRecommender.recommendCount);
cachingRecommender.Recommend(3, 1);
Assert.AreEqual(5, mockRecommender.recommendCount);
// Results from this recommend() method can be cached...
IDRescorer rescorer = NullRescorer.getItemInstance();
cachingRecommender.Refresh(null);
cachingRecommender.Recommend(1, 1, rescorer);
Assert.AreEqual(6, mockRecommender.recommendCount);
cachingRecommender.Recommend(2, 1, rescorer);
Assert.AreEqual(7, mockRecommender.recommendCount);
cachingRecommender.Recommend(1, 1, rescorer);
Assert.AreEqual(7, mockRecommender.recommendCount);
cachingRecommender.Recommend(2, 1, rescorer);
Assert.AreEqual(7, mockRecommender.recommendCount);
// until you switch Rescorers
cachingRecommender.Recommend(1, 1, null);
Assert.AreEqual(8, mockRecommender.recommendCount);
cachingRecommender.Recommend(2, 1, null);
Assert.AreEqual(9, mockRecommender.recommendCount);
cachingRecommender.Refresh(null);
cachingRecommender.EstimatePreference(1, 1);
Assert.AreEqual(10, mockRecommender.recommendCount);
cachingRecommender.EstimatePreference(1, 2);
Assert.AreEqual(11, mockRecommender.recommendCount);
cachingRecommender.EstimatePreference(1, 2);
Assert.AreEqual(11, mockRecommender.recommendCount);
}
public void TestRecommender()
{
AtomicInteger recommendCount = new AtomicInteger();
Recommender mockRecommender = new MockRecommender(recommendCount);
Recommender cachingRecommender = new CachingRecommender(mockRecommender);
cachingRecommender.Recommend("1", 1);
Assert.AreEqual(1, recommendCount.Value);
cachingRecommender.Recommend("2", 1);
Assert.AreEqual(2, recommendCount.Value);
cachingRecommender.Recommend("1", 1);
Assert.AreEqual(2, recommendCount.Value);
cachingRecommender.Recommend("2", 1);
Assert.AreEqual(2, recommendCount.Value);
cachingRecommender.Refresh();
cachingRecommender.Recommend("1", 1);
Assert.AreEqual(3, recommendCount.Value);
cachingRecommender.Recommend("2", 1);
Assert.AreEqual(4, recommendCount.Value);
cachingRecommender.Recommend("3", 1);
Assert.AreEqual(5, recommendCount.Value);
// Results from this recommend() method can't be cached:
Rescorer <Item> rescorer = NullRescorer <Item> .Instance;
cachingRecommender.Refresh();
cachingRecommender.Recommend("1", 1, rescorer);
Assert.AreEqual(6, recommendCount.Value);
cachingRecommender.Recommend("2", 1, rescorer);
Assert.AreEqual(7, recommendCount.Value);
cachingRecommender.Recommend("1", 1, rescorer);
Assert.AreEqual(8, recommendCount.Value);
cachingRecommender.Recommend("2", 1, rescorer);
Assert.AreEqual(9, recommendCount.Value);
cachingRecommender.Refresh();
cachingRecommender.EstimatePreference("test1", "1");
Assert.AreEqual(10, recommendCount.Value);
cachingRecommender.EstimatePreference("test1", "2");
Assert.AreEqual(11, recommendCount.Value);
cachingRecommender.EstimatePreference("test1", "2");
Assert.AreEqual(11, recommendCount.Value);
}
public void TestRecommender()
{
AtomicInteger recommendCount = new AtomicInteger();
Recommender mockRecommender = new MockRecommender(recommendCount);
Recommender cachingRecommender = new CachingRecommender(mockRecommender);
cachingRecommender.Recommend("1", 1);
Assert.AreEqual(1, recommendCount.Value);
cachingRecommender.Recommend("2", 1);
Assert.AreEqual(2, recommendCount.Value);
cachingRecommender.Recommend("1", 1);
Assert.AreEqual(2, recommendCount.Value);
cachingRecommender.Recommend("2", 1);
Assert.AreEqual(2, recommendCount.Value);
cachingRecommender.Refresh();
cachingRecommender.Recommend("1", 1);
Assert.AreEqual(3, recommendCount.Value);
cachingRecommender.Recommend("2", 1);
Assert.AreEqual(4, recommendCount.Value);
cachingRecommender.Recommend("3", 1);
Assert.AreEqual(5, recommendCount.Value);
// Results from this recommend() method can't be cached:
Rescorer<Item> rescorer = NullRescorer<Item>.Instance;
cachingRecommender.Refresh();
cachingRecommender.Recommend("1", 1, rescorer);
Assert.AreEqual(6, recommendCount.Value);
cachingRecommender.Recommend("2", 1, rescorer);
Assert.AreEqual(7, recommendCount.Value);
cachingRecommender.Recommend("1", 1, rescorer);
Assert.AreEqual(8, recommendCount.Value);
cachingRecommender.Recommend("2", 1, rescorer);
Assert.AreEqual(9, recommendCount.Value);
cachingRecommender.Refresh();
cachingRecommender.EstimatePreference("test1", "1");
Assert.AreEqual(10, recommendCount.Value);
cachingRecommender.EstimatePreference("test1", "2");
Assert.AreEqual(11, recommendCount.Value);
cachingRecommender.EstimatePreference("test1", "2");
Assert.AreEqual(11, recommendCount.Value);
}
public void TestSlopeOneLoad()
{
DataModel model = CreateModel();
Taste.Recommender.Recommender recommender = new CachingRecommender(new SlopeOneRecommender(model));
DoTestLoad(recommender, 30);
}
