public void add_User_Centroid(User_Centroid centroid)
{
string strSelect = "INSERT INTO [RS].[USER_CENTROID_TBL] ([ClusterID] ,[MetaItemID] ,[Value]) VALUES (@ClusterID ,@MetaItemID ,@Value) ";
Dictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("@ClusterID", centroid.ClusterID);
parameters.Add("@MetaItemID", centroid.MetaItemID);
parameters.Add("@Value", centroid.Value);
executeNonQuery(strSelect, parameters);
}
private void LoadUpdateCluster(Clustering_Users_DAO dao,
Settings st,
ref bool existTransac,
List<Partion> listPartion,
string U_SubCategoryID,
string categoryName,
Dictionary<string, int> dic_users,
Dictionary<string, int> dic_items,
double[][] x)
{
if (x.Length > 0)
{
existTransac = true;
List<string> listClusterID = getListClusterID(listPartion);
// Get existed V
double[][] v = new double[listClusterID.Count][];
Cluster cl = new Cluster();
cl.addSetting(v.Length, st.maxLoop, x, 0.0001, st.Alpha, st.T, st.U_M);
Dictionary<int, int> clustered_Data;
if (listPartion.Count > 0)
{
v = get_V_ByNewItems_ReComputeAll(x, dic_items, dic_users, listPartion, listClusterID);
clustered_Data = cl.Clustering_Merge(st.cluster_type, v);
}
else
clustered_Data = cl.Clustering_Merge(st.cluster_type);
v = cl.getV();
// Mapping UserID to clustered Data
Dictionary<string, int> mapped_Data = map_ID_to_Index(dic_users, clustered_Data);
#region C1 - Ratting Matrix
// Add Ratting Matrix
for (int i = 0; i < x.Length; i++)
for (int j = 0; j < x[0].Length; j++)
if (x[i][j] > 0)
{
try
{
MatrixItem matrixItem = new MatrixItem();
matrixItem.ClusterID = categoryName + (mapped_Data[Util.FindKeyByValue(dic_users, i)] + 1);
matrixItem.Row = Util.FindKeyByValue(dic_users, i);
matrixItem.Column = Util.FindKeyByValue(dic_items, j);
matrixItem.Cell = x[i][j];
dao.setRattingMatrix(matrixItem);
}
catch (Exception) { }
}
#endregion
// Remove old USER_CLUSTER_TBL
dao.delete_USER_CLUSTER_TBL(categoryName);
// Add to USER_CLUSTER_TBL
for (int i = 0; i < v.Length; i++)
dao.addCluster(categoryName + (i + 1), U_SubCategoryID);
// Remove old PARTION_TBL
dao.delete_PARTION_TBL(categoryName);
// Add to PARTION_TBL
foreach (var map in mapped_Data)
{
Partion detail = new Partion();
detail.UserID = map.Key;
detail.ClusterID = categoryName + (map.Value + 1);
dao.addPARTION_TBL(detail);
}
// Remove old USER_CENTROID_TBL
dao.delete_USER_CENTROID_TBL(categoryName);
// Add to USER_CENTROID_TBL
for (int i = 0; i < v.Length; i++)
for (int j = 0; j < v[0].Length; j++)
if (!Double.NaN.Equals(v[i][j]))
{
try
{
User_Centroid centroid = new User_Centroid();
centroid.Value = v[i][j];
centroid.ClusterID = categoryName + (i + 1);
centroid.MetaItemID = Util.FindKeyByValue(dic_items, j);
dao.add_User_Centroid(centroid);
}
catch (Exception) { }
}
}
}
private void LoadCluster(Clustering_Users_DAO dao,
Settings st,
ref bool existTransac,
string U_SubCategoryID,
string categoryName,
Dictionary<string, int> dic_users,
Dictionary<string, int> dic_items,
double[][] x)
{
if (x.Length > 0)
{
existTransac = true;
// Clustering Data
Cluster cluster = new Cluster();
Dictionary<int, int> clustered_Data = new Dictionary<int, int>();
cluster.addSetting(st.k, st.maxLoop, x, st.epsilon, st.Alpha, st.T, st.U_M);
clustered_Data = cluster.Clustering(st.cluster_type);
//cuong add if
//if (clustered_Data.Count > 0)
//{
// Mapping UserID to clustered Data
Dictionary<string, int> mapped_Data = map_ID_to_Index(dic_users, clustered_Data);
// Get Destination V
double[][] v = cluster.getV();
// Add new data
#region C1 - Ratting Matrix
// Add Ratting Matrix
for (int i = 0; i < x.Length; i++)
for (int j = 0; j < x[0].Length; j++)
if (x[i][j] > 0)
{
try
{
MatrixItem matrixItem = new MatrixItem();
matrixItem.ClusterID = categoryName + (mapped_Data[Util.FindKeyByValue(dic_users, i)] + 1);
matrixItem.Row = Util.FindKeyByValue(dic_users, i);
matrixItem.Column = Util.FindKeyByValue(dic_items, j);
matrixItem.Cell = x[i][j];
dao.setRattingMatrix(matrixItem);
}
catch (Exception) { }
}
#endregion
// Add to USER_CLUSTER_TBL
for (int i = 0; i < v.Length; i++)
dao.addCluster(categoryName + (i + 1), U_SubCategoryID);
// Add to PARTION_TBL
foreach (var map in mapped_Data)
{
Partion detail = new Partion();
detail.UserID = map.Key;
detail.ClusterID = categoryName + (map.Value + 1);
dao.addPARTION_TBL(detail);
}
// Add to USER_CENTROID_TBL
for (int i = 0; i < v.Length; i++)
for (int j = 0; j < v[0].Length; j++)
if (!Double.NaN.Equals(v[i][j]))
{
try
{
User_Centroid centroid = new User_Centroid();
centroid.Value = v[i][j];
centroid.ClusterID = categoryName + (i + 1);
centroid.MetaItemID = Util.FindKeyByValue(dic_items, j);
dao.add_User_Centroid(centroid);
}
catch (Exception) { }
}
}
//}//cuong add
}
public List<User_Centroid> getUserCentroid(string ClusterID)
{
string strSelect = "SELECT [ClusterID] ,[MetaItemID] ,[Value] FROM [RS].[USER_CENTROID_TBL] WHERE [ClusterID]=@ClusterID";
Dictionary<string, object> parameters = new Dictionary<string, object>();
parameters.Add("@ClusterID", ClusterID);
SqlDataReader dr = executeReader(strSelect, parameters);
List<User_Centroid> list = new List<User_Centroid>();
while (dr.Read())
{
User_Centroid obj = new User_Centroid();
obj.ClusterID = ClusterID;
obj.MetaItemID = dr.GetString(dr.GetOrdinal("MetaItemID"));
obj.Value = dr.GetDouble(dr.GetOrdinal("Value"));
list.Add(obj);
}
dr.Close();
return list;
}
