//---------------------------------------------------------------------------------------
//This function computes the Confident Matrix and Weight Matrix, forllowing the formulars
//Created by Vuong Minh Tuan
//Corrected by MC. NGUYEN 21.10.2014.
//---------------------------------------------------------------------------------------
public void ComputeConfident(Predict_DAO_MC dao)
{
dao.CLEAN_CONF_Matrix();
dao.CLEAN_WEIG_Matrix();
List<string> list_ClusterID = dao.getAllClusterID();
foreach (var item in list_ClusterID)
{
List<Transac> u_transacs = dao.getTransac_ForMatrix_ByClusterID_V2(item);
if (u_transacs.Count > 0)
{
// Get QuantityMatrix - MC OK
Dictionary<string, int> QM_dic_users = new Dictionary<string, int>();
Dictionary<string, int> QM_dic_items = new Dictionary<string, int>();
double[][] QuantityMatrix = Util.getQuantityMatrix_FromTransac_ByMetaItemID(u_transacs, out QM_dic_users, out QM_dic_items);
if (QuantityMatrix[0].Length > 1)
{
// Compute Support One Item Matrix - MC OK
double[] S = new double[QuantityMatrix[0].Length];
for (int j = 0; j < QuantityMatrix[0].Length; j++)
{
double count = 0.0;
for (int i = 0; i < QuantityMatrix.Length; i++)
if (QuantityMatrix[i][j] > 0)
count++;
S[j] = count;
}
// Compute Support Matrix - MC OK
double[][] SupportMatrix = new double[QuantityMatrix[0].Length][];
for (int i = 0; i < QuantityMatrix[0].Length; i++)
SupportMatrix[i] = new double[QuantityMatrix[0].Length];
for (int i = 0; i < QuantityMatrix.Length; i++)
{
for (int j = 0; j < QuantityMatrix[0].Length; j++)
for (int j2 = 0; j2 < QuantityMatrix[0].Length; j2++)
if (QuantityMatrix[i][j] > 0 & QuantityMatrix[i][j2] > 0 & j != j2)
SupportMatrix[j][j2]++;
}
// Compute CONF Matrix - MC OK
double[][] CONF = new double[QuantityMatrix[0].Length][];
for (int i = 0; i < QuantityMatrix[0].Length; i++)
CONF[i] = new double[QuantityMatrix[0].Length];
for (int i = 0; i < QuantityMatrix[0].Length; i++)
{
for (int j = 0; j < QuantityMatrix[0].Length; j++)
if (i == j)
CONF[i][j] = 1.0;
else if (S[i] > 0)
CONF[i][j] = SupportMatrix[i][j] / S[i];
}
// Compute WEIG Matrix - MC OK
double[][] WEIG = new double[QuantityMatrix[0].Length][];
for (int i = 0; i < QuantityMatrix[0].Length; i++)
WEIG[i] = new double[QuantityMatrix[0].Length];
for (int i = 0; i < QuantityMatrix[0].Length; i++)
{
for (int j = 0; j < QuantityMatrix[0].Length; j++)
if (i != j)
WEIG[i][j] = computeWEIG(i, j, SupportMatrix, QuantityMatrix);
}
// Save CONF Matrix - MC - OK
for (int i = 0; i < CONF.Length; i++)
for (int j = 0; j < CONF[0].Length; j++)
if (CONF[i][j] > 0)
{
MatrixItem matrixItem = new MatrixItem();
matrixItem.Row = Util.FindKeyByValue(QM_dic_items, i);
matrixItem.Column = Util.FindKeyByValue(QM_dic_items, j);
matrixItem.Cell = CONF[i][j];
matrixItem.ClusterID = item;
dao.setCONF_Matrix(matrixItem);
}
// Save WEIG Matrix
for (int i = 0; i < WEIG.Length; i++)
for (int j = 0; j < WEIG[0].Length; j++)
if (WEIG[i][j] > 0)
{
MatrixItem matrixItem = new MatrixItem();
matrixItem.Row = Util.FindKeyByValue(QM_dic_items, i);
matrixItem.Column = Util.FindKeyByValue(QM_dic_items, j);
matrixItem.Cell = WEIG[i][j];
matrixItem.ClusterID = item;
dao.setWEIG_Matrix(matrixItem);
}
}
}
}
}
