private List <RecommendedItem> mostSimilarItems(long itemID,
IEnumerator <long> possibleItemIDs,
int howMany,
Rescorer <Tuple <long, long> > rescorer)
{
TopItems.Estimator <long> estimator = new MostSimilarEstimator(itemID, getSimilarity(), rescorer);
return(TopItems.getTopItems(howMany, possibleItemIDs, null, estimator));
}
public IList <RecommendedItem> MostSimilarItems(Object itemID,
int howMany,
Rescorer <Pair <Item, Item> > rescorer)
{
if (rescorer == null)
{
throw new ArgumentNullException("rescorer is null");
}
Item toItem = this.DataModel.GetItem(itemID);
TopItems.Estimator <Item> estimator = new MostSimilarEstimator(toItem, correlation, rescorer);
return(DoMostSimilarItems(itemID, howMany, estimator));
}
public IList <User> MostSimilarUsers(Object userID,
int howMany,
Rescorer <Pair <User, User> > rescorer)
{
if (rescorer == null)
{
throw new ArgumentNullException("rescorer is null");
}
User toUser = this.DataModel.GetUser(userID);
TopItems.Estimator <User> estimator = new MostSimilarEstimator(toUser, correlation, rescorer);
return(DoMostSimilarUsers(userID, howMany, estimator));
}
public List <RecommendedItem> mostSimilarItems(long itemID, int howMany, Rescorer <Tuple <long, long> > rescorer)
{
TopItems.Estimator <long> estimator = new MostSimilarEstimator(itemID, this.similarity, rescorer);
return(this.doMostSimilarItems(new long[] { itemID }, howMany, estimator));
}
public virtual long[] mostSimilarUserIDs(long userID, int howMany, Rescorer <Tuple <long, long> > rescorer)
{
TopItems.Estimator <long> estimator = new MostSimilarEstimator(userID, this.similarity, rescorer);
return(this.doMostSimilarUsers(howMany, estimator));
}