private IList <RecommendedItem> DoMostSimilarItems(Object itemID,
int howMany,
TopItems.Estimator <Item> estimator)
{
DataModel model = this.DataModel;
Item toItem = model.GetItem(itemID);
ICollection <Item> allItems = new HashedSet <Item>(/*Model.GetNumItems()*/);
foreach (Item item in model.GetItems())
{
allItems.Add(item);
}
allItems.Remove(toItem);
return(TopItems.GetTopItems(howMany, allItems, NullRescorer <Item> .Instance, estimator));
}
private IList <User> DoMostSimilarUsers(Object userID,
int howMany,
TopItems.Estimator <User> estimator)
{
DataModel model = this.DataModel;
User toUser = model.GetUser(userID);
ICollection <User> allUsers = new HashedSet <User>(/*Model.GetNumUsers()*/);
foreach (User user in model.GetUsers())
{
allUsers.Add(user);
}
allUsers.Remove(toUser);
return(TopItems.GetTopUsers(howMany, allUsers, NullRescorer <User> .Instance, estimator));
}
private List <RecommendedItem> doMostSimilarItems(long[] itemIDs, int howMany, TopItems.Estimator <long> estimator)
{
FastIDSet set = this.mostSimilarItemsCandidateItemsStrategy.getCandidateItems(itemIDs, this.getDataModel());
return(TopItems.getTopItems(howMany, set.GetEnumerator(), null, estimator));
}
private long[] doMostSimilarUsers(int howMany, TopItems.Estimator <long> estimator)
{
DataModel model = this.getDataModel();
return(TopItems.getTopUsers(howMany, model.getUserIDs(), null, estimator));
}