private SentimentAnalysisResults ScoreValence(List <double> sentiments, SentiText text)
{
if (sentiments.Count == 0)
{
return(new SentimentAnalysisResults()); //will return with all 0
}
var sum = sentiments.Sum();
var puncAmplifier = PunctuationEmphasis(text.Text);
sum += Math.Sign(sum) * puncAmplifier;
var compound = SentimentUtils.Normalize(sum);
var sifted = SiftSentimentScores(sentiments);
if (sifted.PosSum > Math.Abs(sifted.NegSum))
{
sifted.PosSum += puncAmplifier;
}
else if (sifted.PosSum < Math.Abs(sifted.NegSum))
{
sifted.NegSum -= puncAmplifier;
}
var total = sifted.PosSum + Math.Abs(sifted.NegSum) + sifted.NeuCount;
return(new SentimentAnalysisResults
{
Compound = Math.Round(compound, 4),
Positive = Math.Round(Math.Abs(sifted.PosSum / total), 3),
Negative = Math.Round(Math.Abs(sifted.NegSum / total), 3),
Neutral = Math.Round(Math.Abs(sifted.NeuCount / total), 3)
});
}
