private MovieLensItemRating ParseItemRating(string line)
{
var parts = line.Split(new string[] { "::" }, StringSplitOptions.RemoveEmptyEntries);
var ir = new MovieLensItemRating();
ir.User = new MovieLensUser(parts[0]);
ir.Item = new MovieLensItem(parts[1]);
ir.Rating = Convert.ToInt32(parts[2]);
if (UsersCluster.ContainsKey(ir.User.Id))
{
ir.UserCluster = UsersCluster[ir.User.Id];
}
if (ItemsCluster.ContainsKey(ir.Item.Id))
{
ir.ItemCluster = ItemsCluster[ir.Item.Id];
}
if (AuxUsersCluster.ContainsKey(ir.User.Id))
{
ir.AuxUserCluster = AuxUsersCluster[ir.User.Id];
}
if (AuxItemsCluster.ContainsKey(ir.Item.Id))
{
ir.AuxItemCluster = AuxItemsCluster[ir.Item.Id];
}
return(ir);
}
private ItemRatingWithClusters ParseItemRating(string line)
{
var parts = line.Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
var ir = new ItemRatingWithClusters();
ir.User = new User(parts[0]);
ir.Item = new Item(parts[1]);
ir.Rating = Convert.ToInt32(parts[2]);
int uc = 0, ic = 0, uca = 0, ica = 0;
if (RandomClusters)
{
Random r = new Random();
double u = r.Next() * ClusterNumbers;
double i = r.Next() * ClusterNumbers;
double ua = r.Next() * ClusterNumbers;
double ia = r.Next() * ClusterNumbers;
uc = Convert.ToInt32(Math.Round(u));
ic = Convert.ToInt32(Math.Round(i));
uca = Convert.ToInt32(Math.Round(ua));
ica = Convert.ToInt32(Math.Round(ia));
}
if (UsersCluster.ContainsKey(ir.User.Id))
{
ir.UserCluster = RandomClusters ? uc.ToString() : UsersCluster[ir.User.Id];
}
if (ItemsCluster.ContainsKey(ir.Item.Id))
{
ir.ItemCluster = RandomClusters ? ic.ToString() : ItemsCluster[ir.Item.Id];
}
if (AuxUsersCluster.ContainsKey(ir.User.Id))
{
ir.AuxUserCluster = RandomClusters ? uca.ToString() : AuxUsersCluster[ir.User.Id];
}
if (AuxItemsCluster.ContainsKey(ir.Item.Id))
{
ir.AuxItemCluster = RandomClusters ? ica.ToString() : AuxItemsCluster[ir.Item.Id];
}
return(ir);
}