/// <summary>Create a CombinedRatings object from to existing IRatings objects</summary>
/// <param name="ratings1">the first data set</param>
/// <param name="ratings2">the second data set</param>
public CombinedRatings(IRatings ratings1, IRatings ratings2)
{
Users = new CombinedList<int>(ratings1.Users, ratings2.Users);
Items = new CombinedList<int>(ratings1.Items, ratings2.Items);
Values = new CombinedList<float>(ratings1, ratings2);
Scale = new RatingScale(ratings1.Scale, ratings2.Scale);
MaxUserID = Math.Max(ratings1.MaxUserID, ratings2.MaxUserID);
MaxItemID = Math.Max(ratings1.MaxItemID, ratings2.MaxItemID);
}
public void TestConstructor3_1()
{
var levels = (new float[] {0f, 1f}).ToList();
var scale = new RatingScale(new RatingScale(levels), new RatingScale(levels));
Assert.AreEqual(0f, scale.Min);
Assert.AreEqual(1f, scale.Max);
Assert.AreEqual(2, scale.Levels.Count);
Assert.AreEqual(0, scale.LevelID[0f]);
Assert.AreEqual(1, scale.LevelID[1f]);
}
/// <summary>Create a CombinedRatings object from to existing IRatings objects</summary>
/// <param name="ratings1">the first data set</param>
/// <param name="ratings2">the second data set</param>
public CombinedRatings(IRatings ratings1, IRatings ratings2)
{
Users = new CombinedList <int>(ratings1.Users, ratings2.Users);
Items = new CombinedList <int>(ratings1.Items, ratings2.Items);
Values = new CombinedList <float>(ratings1, ratings2);
Scale = new RatingScale(ratings1.Scale, ratings2.Scale);
MaxUserID = Math.Max(ratings1.MaxUserID, ratings2.MaxUserID);
MaxItemID = Math.Max(ratings1.MaxItemID, ratings2.MaxItemID);
}
public void TestConstructor2()
{
var scale = new RatingScale(CreateRatings());
Assert.AreEqual(0.2f, scale.Min);
Assert.AreEqual(0.6f, scale.Max);
Assert.AreEqual(4, scale.Levels.Count);
Assert.AreEqual(0, scale.LevelID[0.2f]);
Assert.AreEqual(1, scale.LevelID[0.3f]);
Assert.AreEqual(2, scale.LevelID[0.4f]);
Assert.AreEqual(3, scale.LevelID[0.6f]);
}
public void TestConstructor3_2()
{
var levels = (new float[] {0f, 1f}).ToList();
var scale = new RatingScale(new RatingScale(levels), new RatingScale(CreateRatings()));
Assert.AreEqual(0f, scale.Min);
Assert.AreEqual(1f, scale.Max);
Assert.AreEqual(6, scale.Levels.Count);
Assert.AreEqual(0, scale.LevelID[0f]);
Assert.AreEqual(1, scale.LevelID[0.2f]);
Assert.AreEqual(2, scale.LevelID[0.3f]);
Assert.AreEqual(3, scale.LevelID[0.4f]);
Assert.AreEqual(4, scale.LevelID[0.6f]);
Assert.AreEqual(5, scale.LevelID[1f]);
}
///
public Ratings(SerializationInfo info, StreamingContext context) : base(info, context)
{
Values = (List <float>)info.GetValue("Values", typeof(List <float>));
Scale = (RatingScale)info.GetValue("Scale", typeof(RatingScale));
}
///
public virtual void InitScale()
{
Scale = new RatingScale(this.Values);
}
/// <summary>
/// Initializes a new instance of the <see cref="MyMediaLite.Data.RatingScale"/> class,
/// given two existing instances.
/// </summary>
/// <param name='scale1'>the first scale object</param>
/// <param name='scale2'>the second scale object</param>
public RatingScale(RatingScale scale1, RatingScale scale2)
{
Init(scale1.LevelID.Keys.Union(scale2.LevelID.Keys).ToList());
}
///
public override void InitScale()
{
Scale = new RatingScale(this.byte_values);
}
///
public override void InitScale()
{
Scale = new RatingScale(this.byte_values);
}
/// <summary>
/// Initializes a new instance of the <see cref="MyMediaLite.Data.RatingScale"/> class,
/// given two existing instances.
/// </summary>
/// <param name='scale1'>the first scale object</param>
/// <param name='scale2'>the second scale object</param>
public RatingScale(RatingScale scale1, RatingScale scale2)
{
Init(scale1.LevelID.Keys.Union(scale2.LevelID.Keys).ToList());
}
