private void ProcessTheta(int[] items, int[] responses)
{
CATItems itemBank = null;
if ((bool)Session["IsDicho"])
{
itemBank = new CATItems(items.Length);
Tuple <CATItems.ColumnNames, int>[] cols = itemBank.GetKeys();
for (int i = 0; i < cols.Length; i++)
{
string tempKey = cols[i].Item1.ToString() + cols[i].Item2.ToString();
itemBank.SetItemParamter(cols[i], cat_items[tempKey].Select(y => (double)y).ToArray());
}
// Calculate theta
CalculateTheta(itemBank, responses);
}
if ((bool)Session["IsPoly"])
{
ModelNames.Models paramModel = ModelNames.Models.GRM;
itemBank = new CATItems(items.Length, paramModel.EnumToString(), nrCat: 5);
Tuple <CATItems.ColumnNames, int>[] cols = itemBank.GetKeys();
for (int i = 0; i < cols.Length; i++)
{
string tempKey = cols[i].Item1.ToString() + cols[i].Item2.ToString();
itemBank.SetItemParamter(cols[i], cat_items[tempKey].Select(y => (double)y).ToArray());
}
// Calculate theta
CalculateTheta(itemBank, responses, model: paramModel.EnumToString());
}
}
public void testJi_P(ModelNames.Models paramModel)
{
REngine.SetEnvironmentVariables();
REngine engineObj = REngine.GetInstance();
// Loading a library from R
engineObj.Evaluate("library(catR)");
// Polytomous Items
CharacterVector modelName = engineObj.CreateCharacterVector(new string[] { paramModel.EnumToString() });
engineObj.SetSymbol("modelName", modelName);
DataFrame PolyItems = engineObj.Evaluate("PolyItems <- genPolyMatrix(100, 5, model = modelName, same.nrCat = TRUE)").AsDataFrame();
engineObj.SetSymbol("PolyItems", PolyItems);
// Adapting with the existing "CAT-Items" type (Wrapper)
Console.WriteLine("*******************************************");
Console.WriteLine("Polytomous Items, Model : " + paramModel.EnumToString());
Console.WriteLine("*******************************************");
CATItems itemBank = new CATItems(PolyItems[0].Length, paramModel.EnumToString(), 5);
Tuple <CATItems.ColumnNames, int>[] cols = itemBank.GetKeys();
for (int i = 0; i < cols.Length; i++)
{
itemBank.SetItemParamter(cols[i], PolyItems[i].Select(y => (double)y).ToArray());
}
#region "Test block for Ability Values (th)"
JiList objJi = null;
int decimalPoint = 6;
double[] th_Values = CatRcs.Utils.CommonHelper.Sequence(-6, 6, by: 1);
Console.WriteLine("******* TEST for Ability value Theta ********");
for (int k = 0; k < th_Values.Length; k++)
{
// Sequence Generation for Theta (Ability) values
NumericVector th_val = engineObj.CreateNumericVector(new double[] { th_Values[k] });
engineObj.SetSymbol("th_val", th_val);
// Calling the "Ji" function from R
GenericVector result_Ji = engineObj.Evaluate("result_Ji <- Ji(th = th_val, PolyItems, model = modelName, D = 1)").AsList();
// Getting the function result
NumericVector Ji = result_Ji[0].AsNumeric();
NumericVector dJi = result_Ji[1].AsNumeric();
Console.WriteLine("Value of Theta: " + th_Values[k]);
objJi = CatRLib.Ji(th_Values[k], itemBank, paramModel.EnumToString(), 1);
#region "Ji"
int z = 0;
resultFlag = true;
Console.WriteLine("****** Ji ******");
for (int i = 0; i < objJi.Ji.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(Ji[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objJi.Ji[i]), decimalPoint))
{
Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
Console.WriteLine("Value from R: " + decimal.Round(Convert.ToDecimal(Ji[i]), decimalPoint));
Console.WriteLine("Value from CS: " + decimal.Round(Convert.ToDecimal(objJi.Ji[i]), decimalPoint));
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of Ji result is Passed!");
#endregion
#region "dJi"
z = 0;
resultFlag = true;
Console.WriteLine("****** dJi ******");
for (int i = 0; i < objJi.dJi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(dJi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objJi.dJi[i]), decimalPoint))
{
Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of dJi result is Passed!");
#endregion
}
#endregion
#region "Test block for Metric values"
objJi = null;
double[] D_Values = CatRcs.Utils.CommonHelper.Sequence(0.5, 1, by: 0.1);
Console.WriteLine("******* TEST for Metric Constant ********");
for (int k = 0; k < D_Values.Length; k++)
{
// Sequence Generation for Theta (Ability) values
NumericVector D_val = engineObj.CreateNumericVector(new double[] { D_Values[k] });
engineObj.SetSymbol("D_val", D_val);
// Calling the "Ji" function from R
GenericVector result_Ji = engineObj.Evaluate("result_Ji <- Ji(th = 0, PolyItems, model = modelName, D = D_val)").AsList();
// Getting the function result
NumericVector Ji = result_Ji[0].AsNumeric();
NumericVector dJi = result_Ji[1].AsNumeric();
Console.WriteLine("Value of Metric Constant: " + D_Values[k]);
objJi = CatRLib.Ji(0, itemBank, paramModel.EnumToString(), D_Values[k]);
#region "Ji"
int z = 0;
resultFlag = true;
Console.WriteLine("****** Ji ******");
for (int i = 0; i < objJi.Ji.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(Ji[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objJi.Ji[i]), decimalPoint))
{
/*Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
* Console.WriteLine("Value from R: " + decimal.Round(Convert.ToDecimal(Ji[i]), decimalPoint));
* Console.WriteLine("Value from CS: " + decimal.Round(Convert.ToDecimal(objJi.Ji[i]), decimalPoint));*/
resultFlag = false;
}
}
//Assert.IsTrue(resultFlag);
Console.WriteLine("Values of Ji result is Passed!");
#endregion
#region "dJi"
z = 0;
resultFlag = true;
Console.WriteLine("****** dJi ******");
for (int i = 0; i < objJi.dJi.Length; i++)
{
z = i + 1; // item number
if (decimal.Round(Convert.ToDecimal(dJi[i]), decimalPoint) != decimal.Round(Convert.ToDecimal(objJi.dJi[i]), decimalPoint))
{
Console.WriteLine("Test for Item No. # " + z + " is not Passed!");
resultFlag = false;
}
}
Assert.IsTrue(resultFlag);
Console.WriteLine("Values of dJi result is Passed!");
#endregion
}
#endregion
}
