/// <summary>
/// Returns model information for a predicate, given the predicate label.
/// </summary>
/// <param name="predicateLabel">
/// The predicate label to fetch information for.
/// </param>
/// <param name="featureCounts">
/// Array to be passed in to the method; it should have a length equal to the number of outcomes
/// in the model. The method increments the count of each outcome that is active in the specified
/// predicate.
/// </param>
/// <param name="outcomeSums">
/// Array to be passed in to the method; it should have a length equal to the number of outcomes
/// in the model. The method adds the parameter values for each of the active outcomes in the
/// predicate.
/// </param>
public virtual void GetPredicateData(string predicateLabel, int[] featureCounts, double[] outcomeSums)
{
try
{
if (predicateLabel != null && _predicates.ContainsKey(predicateLabel))
{
PatternedPredicate predicate = _predicates[predicateLabel];
int[] activeOutcomes = _outcomePatterns[predicate.OutcomePattern];
for (int currentActiveOutcome = 1; currentActiveOutcome < activeOutcomes.Length; currentActiveOutcome++)
{
int outcomeIndex = activeOutcomes[currentActiveOutcome];
featureCounts[outcomeIndex]++;
outcomeSums[outcomeIndex] += predicate.GetParameter(currentActiveOutcome - 1);
}
}
}
catch (ArgumentNullException ex)
{
throw new ArgumentException(string.Format("Try to find key '{0}' in predicates dictionary ({1} entries)", predicateLabel, _predicates.Count), ex);
}
}
private void InsertPredicates(PatternedPredicate[] predicates)
{
mDataCommand.CommandText = "INSERT INTO Predicate values (?, ?)";
mDataCommand.Parameters.Clear();
SQLiteParameter idParameter = new SQLiteParameter();
idParameter.DbType = DbType.Int32;
mDataCommand.Parameters.Add(idParameter);
SQLiteParameter nameParameter = new SQLiteParameter();
nameParameter.DbType = DbType.String;
mDataCommand.Parameters.Add(nameParameter);
for (int currentPredicate = 0; currentPredicate < predicates.Length; currentPredicate++)
{
idParameter.Value = currentPredicate;
nameParameter.Value = predicates[currentPredicate].Name;
mDataCommand.ExecuteNonQuery();
}
}
private void InsertPredicateParameters(int[][] outcomePatterns, PatternedPredicate[] predicates)
{
int[] currentOutcomePattern;
mDataCommand.CommandText = "INSERT INTO PredicateParameter values (?, ?, ?)";
mDataCommand.Parameters.Clear();
SQLiteParameter predicateIdParameter = new SQLiteParameter();
predicateIdParameter.DbType = DbType.Int32;
mDataCommand.Parameters.Add(predicateIdParameter);
SQLiteParameter outcomeIdParameter = new SQLiteParameter();
outcomeIdParameter.DbType = DbType.Int32;
mDataCommand.Parameters.Add(outcomeIdParameter);
SQLiteParameter predicateParameterParameter = new SQLiteParameter();
predicateParameterParameter.DbType = DbType.Double;
mDataCommand.Parameters.Add(predicateParameterParameter);
for (int currentPredicate = 0; currentPredicate < predicates.Length; currentPredicate++)
{
predicateIdParameter.Value = currentPredicate;
currentOutcomePattern = outcomePatterns[predicates[currentPredicate].OutcomePattern];
for (int currentParameter = 0; currentParameter < predicates[currentPredicate].ParameterCount; currentParameter++)
{
outcomeIdParameter.Value = currentOutcomePattern[currentParameter + 1];
predicateParameterParameter.Value = predicates[currentPredicate].GetParameter(currentParameter);
mDataCommand.ExecuteNonQuery();
}
}
}