private FeatureVector ComputeFeatureVector(L7Conversation l7Conversation, string applicationName)
{
var featureVector = new FeatureVector
{
ApplicationProtocolName = l7Conversation.AppTagShort,
ApplicationProtocolNameFull = applicationName
};
Parallel.ForEach(featureVector.GetType().GetProperties().Where(prop => Attribute.IsDefined(prop, typeof(FeatureStatisticalAttribute))),
feature => { feature.SetValue(featureVector, Activator.CreateInstance(feature.PropertyType, l7Conversation)); });
return(featureVector);
}
public void Normalize(FeatureVector stat)
{
var t = stat.GetType();
foreach (var property in t.GetProperties().Where(prop => Attribute.IsDefined(prop, typeof(FeatureStatisticalAttribute))))
{
var name = property.Name;
var feature = property.GetValue(stat, null);
var propertyInfo = feature.GetType().GetProperty(nameof(FeatureBase.FeatureValue));
var propertyValue = (double)propertyInfo.GetValue(feature, null);
if (!propertyValue.Equals(-1.0))
{
propertyInfo.SetValue(feature,
Utilities.Z_score((double)propertyInfo.GetValue(feature, null), this.GetPropValue(this.Mean, name), this.GetPropValue(this.StdDev, name)), null);
}
}
}
private FeatureVector constructFeatureVectorFromProperties(List <double> standardizedVectorList)
{
FeatureVector featureVector = new FeatureVector();
Type type = featureVector.GetType();
PropertyInfo[] properties = type.GetProperties();
/*
* The minus 3 is so we skip the last 3 properties
* in the feature vector class. Those get assigned
* when the user assigns a name to the gesture.
*/
for (int propertyIndex = 0; propertyIndex < properties.Length - 3; propertyIndex++)
{
PropertyInfo property = properties[propertyIndex];
property.SetValue(featureVector, standardizedVectorList[propertyIndex], null);
}
return(featureVector);
}
