/// <summary>
/// The prediction method which can be called from SQL Server
/// </summary>
/// <param name="inputCase"></param>
/// <param name="predictionResult"></param>
protected override void Predict(MiningCase inputCase, PredictionResult predictionResult)
{
//the input values and predictec label
double[] values;
uint label = 0;
int attributeSize = 0;
//convert and scale the input
getValues(inputCase, out values, out label, out attributeSize);
Instance instance = new Instance(1, (int)label, values, getLabels());
//obtain the votes
int[] votes = getVotes(instance);
label = 0;
for (uint i = 1; i < votes.Length; i++)
{
if (votes[i] > votes[label])
{
label = i;
}
}
//construct the output
AttributeStatistics attStats = new AttributeStatistics();
attStats.Attribute = getTargetAttribute();
StateStatistics stateStat = new StateStatistics();
StateValue stateVal = new StateValue();
stateVal.SetIndex(label);
stateStat.Value = AttributeSet.TokenizeAttributeValue(attStats.Attribute, AttributeSet.UntokenizeAttributeValue(attStats.Attribute, stateVal));
attStats.StateStatistics.Add(stateStat);
predictionResult.AddPrediction(attStats);
}
/// <summary>
/// returns the names of the attributes
/// </summary>
/// <returns></returns>
public String[] getAttributeNames()
{
LinkedList <string> values = new LinkedList <string>();
//SortedDictionary<uint, double>.Enumerator enumerator = dict.GetEnumerator();
for (uint i = 0; i < AttributeSet.GetAttributeCount(); i++)
{
if (!isNominal(i))
{
values.AddLast(AttributeSet.GetAttributeDisplayName(i, false));
}
else
{
if (!isTarget(i))
{
for (uint j = 0; j < AttributeSet.GetAttributeStateCount(i); j++)
{
StateValue value = new StateValue();
value.SetIndex(j);
object valuea = AttributeSet.UntokenizeAttributeValue(i, value);
string name;
if (valuea == null)
{
name = "NULL";
}
else
{
name = valuea.ToString();
if (name.Equals(""))
{
name = "NULL";
}
}
values.AddLast(AttributeSet.GetAttributeDisplayName(i, false) + "." + name);
}
}
}
}
string[] output = new string[values.Count];
values.CopyTo(output, 0);
return(output);
}
public System.Data.DataTable GetClasses()
{
//construct the table column names
System.Data.DataTable table = new System.Data.DataTable();
table.Columns.Add("Columns", typeof(string));
if (Context.ExecuteForPrepare)
{
return(table);
}
for (uint i = 0; i < this.AttributeSet.GetAttributeStateCount(getTargetAttribute()); i++)
{
StateValue value = new StateValue();
value.SetIndex(i);
table.Rows.Add(this.AttributeSet.UntokenizeAttributeValue(getTargetAttribute(), value));
}
return(table);
}