/// <summary>Create a RatingsProxy object</summary>
/// <param name="ratings">a ratings data structure</param>
/// <param name="indices">an index list pointing to entries in the ratings</param>
public RatingsProxy(IRatings ratings, IList <int> indices)
{
this.indices = indices;
Users = new ListProxy <int>(ratings.Users, indices);
Items = new ListProxy <int>(ratings.Items, indices);
Values = new ListProxy <float>(ratings, indices);
MaxUserID = Users.Max();
MaxItemID = Items.Max();
Scale = ratings.Scale;
}
/// <summary>Create a RatingsProxy object</summary>
/// <param name="ratings">a ratings data structure</param>
/// <param name="indices">an index list pointing to entries in the ratings</param>
public RatingsProxy(IRatings ratings, IList<int> indices)
{
this.indices = indices;
Users = new ListProxy<int>(ratings.Users, indices);
Items = new ListProxy<int>(ratings.Items, indices);
Values = new ListProxy<float>(ratings, indices);
MaxUserID = Users.Max();
MaxItemID = Items.Max();
Scale = ratings.Scale;
}
/// <summary>Create a TimedRatingsProxy object</summary>
/// <param name="ratings">a ratings data structure</param>
/// <param name="indices">an index list pointing to entries in the ratings</param>
public TimedRatingsProxy(ITimedRatings ratings, IList<int> indices)
{
Users = new ListProxy<int>(ratings.Users, indices);
Items = new ListProxy<int>(ratings.Items, indices);
Values = new ListProxy<float>(ratings, indices);
Times = new ListProxy<DateTime>(ratings.Times, indices);
MaxUserID = ratings.MaxUserID;
MaxItemID = ratings.MaxItemID;
Scale = ratings.Scale;
EarliestTime = Count > 0 ? Times.Min() : DateTime.MaxValue;
LatestTime = Count > 0 ? Times.Max() : DateTime.MinValue;
}
/// <summary>Create a TimedRatingsProxy object</summary>
/// <param name="ratings">a ratings data structure</param>
/// <param name="indices">an index list pointing to entries in the ratings</param>
public TimedRatingsProxy(ITimedRatings ratings, IList <int> indices)
{
Users = new ListProxy <int>(ratings.Users, indices);
Items = new ListProxy <int>(ratings.Items, indices);
Values = new ListProxy <float>(ratings, indices);
Times = new ListProxy <DateTime>(ratings.Times, indices);
MaxUserID = ratings.MaxUserID;
MaxItemID = ratings.MaxItemID;
Scale = ratings.Scale;
EarliestTime = Count > 0 ? Times.Min() : DateTime.MaxValue;
LatestTime = Count > 0 ? Times.Max() : DateTime.MinValue;
}
