public double Evaluate(string firstWord, string secondWord)
{
double rank = 0d;
switch (Type)
{
case FactorType.Constant:
rank = ConstantValue;
break;
case FactorType.SimilarityMetric:
rank = SimilarityMetric.GetSimilarity(firstWord, secondWord);
break;
case FactorType.Expression:
rank = Expression.Evaluate(firstWord, secondWord);
break;
case FactorType.Function:
switch (FunctionType)
{
case FactorFunctionType.MaxLength:
rank = Math.Max(firstWord.Length, secondWord.Length);
break;
case FactorFunctionType.MinLength:
rank = Math.Min(firstWord.Length, secondWord.Length);
break;
case FactorFunctionType.SumLength:
rank = firstWord.Length + secondWord.Length;
break;
case FactorFunctionType.FirstLength:
rank = firstWord.Length;
break;
case FactorFunctionType.SecondLength:
rank = secondWord.Length;
break;
}
break;
}
return(rank);
}
