private (int WordMatchScore, decimal WeightedScore) GetAnswerScore(string lineToMatch, string answer, IEnumerable <WordFrequency> docWordFrequency)
{
var wordMatches = StringProcessor.GetUniqueWordMatch(lineToMatch, answer, _commonWords);
var standardUpperLimit = docWordFrequency.Max(w => w.Frequency);
var wordPriorityScore = 0;
foreach (var word in wordMatches)
{
var relativeWordPriority = standardUpperLimit - (docWordFrequency.FirstOrDefault(iw => iw.Word == word)?.Frequency ?? 0);
wordPriorityScore += relativeWordPriority;
}
var weightedScore = (wordPriorityScore / (decimal)answer.Length) * 10000;
return(wordPriorityScore, Math.Round(weightedScore, 2));
}
