/*
* Create mining structure for selected database
*/
private MiningStructure CreateMiningStructure(Database objDatabase)
{
// drop the existing structures with the same name
DropExistingStructures(objDatabase, sStructureName);
// Initialize a new mining structure
MiningStructure currentMiningStruct = new MiningStructure(sStructureName, sStructureName);
currentMiningStruct.Source = new DataSourceViewBinding("Adventure Works DW");
DataSourceView currentDataSource = new DataSourceView("Adventure Works DW");
// Create the columns of the mining structure
// setting the type, content and data binding
// User Id column
ScalarMiningStructureColumn StructKey = new ScalarMiningStructureColumn("StructKey", "StructKey");
StructKey.Type = MiningStructureColumnTypes.Long;
StructKey.Content = MiningStructureColumnContents.Key;
StructKey.IsKey = true;
// Add data binding to the column
StructKey.KeyColumns.Add("dbo_DimCustomer", "CustomerKey", System.Data.OleDb.OleDbType.Integer);
// Add the column to the mining structure
currentMiningStruct.Columns.Add(StructKey);
// Generation column
ScalarMiningStructureColumn Gender = new ScalarMiningStructureColumn("Gender", "Gender");
Gender.Type = MiningStructureColumnTypes.Text;
Gender.Content = MiningStructureColumnContents.Discrete;
// Add data binding to the column
Gender.KeyColumns.Add("dbo_DimCustomer", "Gender", System.Data.OleDb.OleDbType.WChar);
// Add the column to the mining structure
currentMiningStruct.Columns.Add(Gender);
// Add Nested table by creating a table column and adding
// a key column to the nested table
/*
* TableMiningStructureColumn PayChannels = new TableMiningStructureColumn("PayChannels", "PayChannels");
* PayChannels.ForeignKeyColumns.Add("dbo_Customer", "TotalChildren", System.Data.OleDb.OleDbType.Integer);
*
* ScalarMiningStructureColumn Channel = new ScalarMiningStructureColumn("Channel", "Channel");
* Channel.Type = MiningStructureColumnTypes.Text;
* Channel.Content = MiningStructureColumnContents.Key;
* Channel.IsKey = true;
* // Add data binding to the column
* Channel.KeyColumns.Add("dbo_Customer", "FirstName", System.Data.OleDb.OleDbType.WChar);
* PayChannels.Columns.Add(Channel);
* currentMiningStruct.Columns.Add(PayChannels);
* */
// Add the mining structure to the database
objDatabase.MiningStructures.Add(currentMiningStruct);
currentMiningStruct.Update();
return(currentMiningStruct);
}
/*
* Create mining structure with cusomt fields
*/
private MiningStructure CreateCustomMiningStructure(Database objDatabase, string sStructName, string sTableName, string sKeyColumn, List <string> lsInputColumns, List <string> lsPredictColumns, string sAlgorithm, List <bool> lbPredictColumns)
{
// drop the existing structures with the same name
MiningStructure currentMiningStruct = objDatabase.MiningStructures.FindByName(sStructName);
if (currentMiningStruct != null)
{
currentMiningStruct.Drop();
}
// Initialize a new mining structure
currentMiningStruct = new MiningStructure(sStructName, sStructName);
currentMiningStruct.Source = new DataSourceViewBinding(objDatabase.DataSourceViews[0].Name);
// get data type for the selected column
string sQueryText = "SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" +
sTableName + "' AND COLUMN_NAME = '" + sKeyColumn + "'";
// execute query
SQLManager manager = new SQLManager("MyDataBase");
DataTable objTable = new DataTable();
// get column data type
objTable.Load(manager.GetQueryResult(sQueryText));
string sDataType = objTable.Rows[0][0].ToString();
manager.CloseConnection();
// create key column
ScalarMiningStructureColumn StructKey = new ScalarMiningStructureColumn(sKeyColumn, sKeyColumn);
StructKey.Type = GetColumnStructureType(sDataType);
StructKey.Content = MiningStructureColumnContents.Key;
StructKey.IsKey = true;
StructKey.KeyColumns.Add("dbo_" + sTableName, sKeyColumn, GetColumnDataType(sDataType));
currentMiningStruct.Columns.Add(StructKey);
// input columns
for (int i = 0; i < lsInputColumns.Count; i++)
{
// get data type for the selected column
sQueryText = "SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" +
sTableName + "' AND COLUMN_NAME = '" + lsInputColumns[i] + "'";
// get column data type
objTable = new DataTable();
objTable.Load(manager.GetQueryResult(sQueryText));
sDataType = objTable.Rows[0][0].ToString();
// Generation column
ScalarMiningStructureColumn Input = new ScalarMiningStructureColumn(lsInputColumns[i], lsInputColumns[i]);
Input.Type = GetColumnStructureType(sDataType);
if (Input.Type == MiningStructureColumnTypes.Long)
{
Input.Content = MiningStructureColumnContents.Continuous;
}
else
{
Input.Content = MiningStructureColumnContents.Discrete;
}
// Add data binding to the column
Input.KeyColumns.Add("dbo_" + sTableName, lsInputColumns[i], GetColumnDataType(sDataType));
// Add the column to the mining structure
currentMiningStruct.Columns.Add(Input);
manager.CloseConnection();
}
// add predict columns
// input columns
for (int i = 0; i < lsPredictColumns.Count; i++)
{
// if value = false (input & predict) then skip
if (lbPredictColumns[i] == false)
{
continue;
}
// get data type for the selected column
sQueryText = "SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" +
sTableName + "' AND COLUMN_NAME = '" + lsPredictColumns[i] + "'";
// get column data type
objTable = new DataTable();
objTable.Load(manager.GetQueryResult(sQueryText));
sDataType = objTable.Rows[0][0].ToString();
// Generation column
ScalarMiningStructureColumn Input = new ScalarMiningStructureColumn(lsPredictColumns[i], lsPredictColumns[i]);
Input.Type = GetColumnStructureType(sDataType);
// for double and long set to continous, else is discrete
if (Input.Type == MiningStructureColumnTypes.Long || Input.Type == MiningStructureColumnTypes.Double)
{
Input.Content = MiningStructureColumnContents.Continuous;
}
else
{
Input.Content = MiningStructureColumnContents.Discrete;
}
// Add data binding to the column
Input.KeyColumns.Add("dbo_" + sTableName, lsPredictColumns[i], GetColumnDataType(sDataType));
// Add the column to the mining structure
currentMiningStruct.Columns.Add(Input);
manager.CloseConnection();
}
// Add the mining structure to the database
objDatabase.MiningStructures.Add(currentMiningStruct);
currentMiningStruct.Update();
return(currentMiningStruct);
}
/*
* Create mining structure with cusomt fields
*/
private MiningStructure CreateCustomMiningStructure(Database objDatabase, string sStructName, string sTableName, string sKeyColumn, List<string> lsInputColumns, List<string> lsPredictColumns, string sAlgorithm, List<bool> lbPredictColumns)
{
// drop the existing structures with the same name
MiningStructure currentMiningStruct = objDatabase.MiningStructures.FindByName(sStructName);
if (currentMiningStruct != null)
currentMiningStruct.Drop();
// Initialize a new mining structure
currentMiningStruct = new MiningStructure(sStructName, sStructName);
currentMiningStruct.Source = new DataSourceViewBinding(objDatabase.DataSourceViews[0].Name);
// get data type for the selected column
string sQueryText = "SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" +
sTableName + "' AND COLUMN_NAME = '" + sKeyColumn + "'";
// execute query
SQLManager manager = new SQLManager("MyDataBase");
DataTable objTable = new DataTable();
// get column data type
objTable.Load(manager.GetQueryResult(sQueryText));
string sDataType = objTable.Rows[0][0].ToString();
manager.CloseConnection();
// create key column
ScalarMiningStructureColumn StructKey = new ScalarMiningStructureColumn(sKeyColumn, sKeyColumn);
StructKey.Type = GetColumnStructureType(sDataType);
StructKey.Content = MiningStructureColumnContents.Key;
StructKey.IsKey = true;
StructKey.KeyColumns.Add("dbo_" + sTableName, sKeyColumn, GetColumnDataType(sDataType));
currentMiningStruct.Columns.Add(StructKey);
// input columns
for (int i = 0; i < lsInputColumns.Count; i++)
{
// get data type for the selected column
sQueryText = "SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" +
sTableName + "' AND COLUMN_NAME = '" + lsInputColumns[i] + "'";
// get column data type
objTable = new DataTable();
objTable.Load(manager.GetQueryResult(sQueryText));
sDataType = objTable.Rows[0][0].ToString();
// Generation column
ScalarMiningStructureColumn Input = new ScalarMiningStructureColumn(lsInputColumns[i], lsInputColumns[i]);
Input.Type = GetColumnStructureType(sDataType);
if (Input.Type == MiningStructureColumnTypes.Long)
Input.Content = MiningStructureColumnContents.Continuous;
else
Input.Content = MiningStructureColumnContents.Discrete;
// Add data binding to the column
Input.KeyColumns.Add("dbo_" + sTableName, lsInputColumns[i], GetColumnDataType(sDataType));
// Add the column to the mining structure
currentMiningStruct.Columns.Add(Input);
manager.CloseConnection();
}
// add predict columns
// input columns
for (int i = 0; i < lsPredictColumns.Count; i++)
{
// if value = false (input & predict) then skip
if (lbPredictColumns[i] == false)
continue;
// get data type for the selected column
sQueryText = "SELECT DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '" +
sTableName + "' AND COLUMN_NAME = '" + lsPredictColumns[i] + "'";
// get column data type
objTable = new DataTable();
objTable.Load(manager.GetQueryResult(sQueryText));
sDataType = objTable.Rows[0][0].ToString();
// Generation column
ScalarMiningStructureColumn Input = new ScalarMiningStructureColumn(lsPredictColumns[i], lsPredictColumns[i]);
Input.Type = GetColumnStructureType(sDataType);
// for double and long set to continous, else is discrete
if (Input.Type == MiningStructureColumnTypes.Long || Input.Type == MiningStructureColumnTypes.Double)
Input.Content = MiningStructureColumnContents.Continuous;
else
Input.Content = MiningStructureColumnContents.Discrete;
// Add data binding to the column
Input.KeyColumns.Add("dbo_" + sTableName, lsPredictColumns[i], GetColumnDataType(sDataType));
// Add the column to the mining structure
currentMiningStruct.Columns.Add(Input);
manager.CloseConnection();
}
// Add the mining structure to the database
objDatabase.MiningStructures.Add(currentMiningStruct);
currentMiningStruct.Update();
return currentMiningStruct;
}
/*
* Create mining structure for selected database
*/
private MiningStructure CreateMiningStructure(Database objDatabase)
{
// drop the existing structures with the same name
DropExistingStructures(objDatabase, sStructureName);
// Initialize a new mining structure
MiningStructure currentMiningStruct = new MiningStructure(sStructureName, sStructureName);
currentMiningStruct.Source = new DataSourceViewBinding("Adventure Works DW");
DataSourceView currentDataSource = new DataSourceView("Adventure Works DW");
// Create the columns of the mining structure
// setting the type, content and data binding
// User Id column
ScalarMiningStructureColumn StructKey = new ScalarMiningStructureColumn("StructKey", "StructKey");
StructKey.Type = MiningStructureColumnTypes.Long;
StructKey.Content = MiningStructureColumnContents.Key;
StructKey.IsKey = true;
// Add data binding to the column
StructKey.KeyColumns.Add("dbo_DimCustomer", "CustomerKey", System.Data.OleDb.OleDbType.Integer);
// Add the column to the mining structure
currentMiningStruct.Columns.Add(StructKey);
// Generation column
ScalarMiningStructureColumn Gender = new ScalarMiningStructureColumn("Gender", "Gender");
Gender.Type = MiningStructureColumnTypes.Text;
Gender.Content = MiningStructureColumnContents.Discrete;
// Add data binding to the column
Gender.KeyColumns.Add("dbo_DimCustomer", "Gender", System.Data.OleDb.OleDbType.WChar);
// Add the column to the mining structure
currentMiningStruct.Columns.Add(Gender);
// Add Nested table by creating a table column and adding
// a key column to the nested table
/*
TableMiningStructureColumn PayChannels = new TableMiningStructureColumn("PayChannels", "PayChannels");
PayChannels.ForeignKeyColumns.Add("dbo_Customer", "TotalChildren", System.Data.OleDb.OleDbType.Integer);
ScalarMiningStructureColumn Channel = new ScalarMiningStructureColumn("Channel", "Channel");
Channel.Type = MiningStructureColumnTypes.Text;
Channel.Content = MiningStructureColumnContents.Key;
Channel.IsKey = true;
// Add data binding to the column
Channel.KeyColumns.Add("dbo_Customer", "FirstName", System.Data.OleDb.OleDbType.WChar);
PayChannels.Columns.Add(Channel);
currentMiningStruct.Columns.Add(PayChannels);
* */
// Add the mining structure to the database
objDatabase.MiningStructures.Add(currentMiningStruct);
currentMiningStruct.Update();
return currentMiningStruct;
}
/// <summary>
/// Generate a mining structure and full process it
/// </summary>
/// <param name="objDatabase">Analysis Service Database instance</param>
/// <param name="objDataSourceView">Analysis Service DataSourceView instance</param>
/// <param name="strCaseTableName">Mining table name</param>
/// <returns>Mining structure</returns>
public static object GenerateMiningStructure(Database objDatabase, DataSourceView objDataSourceView, string strCaseTableName, DecisionTreeAlgorithmParameters dtParams)
{
try
{
MiningStructure objMiningStructure = new MiningStructure();
objMiningStructure = objDatabase.MiningStructures.Add(objDatabase.MiningStructures.GetNewName(StringEncode(strCaseTableName)));
objMiningStructure.HoldoutMaxPercent = dtParams.HoldoutMaxPercent; // Percent for testing
objMiningStructure.Source = new DataSourceViewBinding(objDataSourceView.ID);
objMiningStructure.CaseTableName = strCaseTableName;
foreach (string name in getAllColumnName(objDataSourceView, strCaseTableName))
{
string colName = StringEncode(name);
ScalarMiningStructureColumn column = new ScalarMiningStructureColumn(colName, colName);
switch (colName)
{
case "ID":
// ProfileBasicId column
column.Type = MiningStructureColumnTypes.Long;
column.Content = MiningStructureColumnContents.Key;
column.IsKey = true;
// Add data binding to the column
column.KeyColumns.Add(strCaseTableName, name);
// Add the column to the mining structure
objMiningStructure.Columns.Add(column);
break;
case "ProfileBasicId":
case "JobPostingId":
case "UserId":
case "JobTitle":
case "JobName":
case "CompanyId":
case "CompanyName":
//column.Type = MiningStructureColumnTypes.Text;
//column.Content = MiningStructureColumnContents.Discrete;
break;
case "IsApproved":
default:
column.Type = MiningStructureColumnTypes.Boolean;
column.Content = MiningStructureColumnContents.Discrete;
// Add data binding to the column
column.KeyColumns.Add(strCaseTableName, name);
// Add the column to the mining structure
objMiningStructure.Columns.Add(column);
break;
}
}
MiningModel objMiningModel = objMiningStructure.CreateMiningModel(true, StringEncode(strCaseTableName));
//MiningModel objMiningModel = objMiningStructure.MiningModels.Add(objMiningStructure.MiningModels.GetNewName(strMiningStructureName));
objMiningModel.Algorithm = MiningModelAlgorithms.MicrosoftDecisionTrees;
objMiningModel.AllowDrillThrough = true;
objMiningModel.AlgorithmParameters.Add("SCORE_METHOD", dtParams.SCORE_METHOD);
objMiningModel.AlgorithmParameters.Add("COMPLEXITY_PENALTY", dtParams.COMPLEXITY_PENALTY);
objMiningModel.AlgorithmParameters.Add("SPLIT_METHOD", dtParams.SPLIT_METHOD);
objMiningModel.AlgorithmParameters.Add("MAXIMUM_INPUT_ATTRIBUTES", dtParams.MAXIMUM_INPUT_ATTRIBUTES);
objMiningModel.AlgorithmParameters.Add("MAXIMUM_OUTPUT_ATTRIBUTES", dtParams.MAXIMUM_OUTPUT_ATTRIBUTES);
objMiningModel.AlgorithmParameters.Add("MINIMUM_SUPPORT", dtParams.MINIMUM_SUPPORT);
int i = 0;
foreach(MiningModelColumn col in objMiningModel.Columns)
{
switch (col.Name)
{
case "IsApproved":
objMiningModel.Columns[i].Usage = "Predict";
break;
case "ID":
objMiningModel.Columns[i].Usage = "Key";
break;
default:
objMiningModel.Columns[i].Usage = "Input";
break;
}
++i;
}
//objMiningModel.Update(UpdateOptions.ExpandFull);
objMiningStructure.Update(UpdateOptions.ExpandFull);
Console.WriteLine("Processing mining model " + objMiningStructure.Name + "...");
objMiningModel.Process(ProcessType.ProcessFull);
Console.WriteLine("Process " + objMiningStructure.Name + " finished!");
return objMiningStructure;
}
catch (Exception ex)
{
throw new Exception("Error in Creating a Mining structure - GenerateMiningStructure. Error Message -> " + ex.Message);
}
}