//calculate the novelty of the giving current feature
private double calculateNovelty(Feature current, Feature oldTopic)
{
double noveltyValue = 0;
// distance
double dist = oldTopic.ShortestDistance[featGraph.getFeatureIndex(current.Data)] / featGraph.MaxDistance;
// previous talk
double previousTalkPercentage = this.getNeighborDiscussAmount(current);
// tags
double funFactTag = 0.0;
if (current.findTagType(FUN_FACT) != null)
{
funFactTag = 1.0;
}
noveltyValue = dist * 0.5 + previousTalkPercentage * 0.5 + funFactTag * 0.5;
if (printCalculation)
{
Console.WriteLine("Novelty Calculation");
Console.WriteLine("Distance from current topic to previous topic: " + dist);
Console.WriteLine("Percentage of related topics NOT covered: " + previousTalkPercentage);
Console.WriteLine("Fun fact: " + funFactTag);
Console.WriteLine("Novelty Value (0.5* distance + 0.5* % of related topics Not covered + 0.5*fun fact): " + noveltyValue);
}
return noveltyValue;
}
