Esempio n. 1
0
        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);
        }
Esempio n. 2
0
        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);
        }