/// <summary>
///
/// </summary>
public List <IRankedCategory> GetAllCategories()
{
List <IRankedCategory> ret = new List <IRankedCategory>();
double highestScore = 0;
foreach (IToken token in Tokens)
{
foreach (IRank rank in token.Scores)
{
if (highestScore < rank.Score)
{
highestScore = rank.Score;
}
var c = GetCategory(rank.Id);
var ranked = new RankedCategory()
{
Id = c.Id,
Name = c.Name,
LinkedCategories = c.LinkedCategories,
ParentCategory = c.ParentCategory
};
int index = ret.IndexOf(ranked);
if (index < 0)
{
ret.Add(ranked);
}
else
{
ret[index].Score++;
}
}
}
ret.Sort();
return(ret);
}
public List <IRankedCategory> GetWeightedCategories(string[] tokens, string negatedPrefix = null)
{
List <IRankedCategory> ret = new List <IRankedCategory>();
float divisor = 0.0f;
bool negated = false;
string token;
foreach (var t in tokens)
{
if (!string.IsNullOrEmpty(negatedPrefix) && t.StartsWith(negatedPrefix))
{
negated = true;
token = t.Replace(negatedPrefix, "").ToLowerInvariant();
}
else
{
negated = false;
token = t.ToLowerInvariant();
}
Dictionary <int, List <double> > dic = new Dictionary <int, List <double> >();
List <IToken> knownTokens = Tokens.FindAll(x => x.Value == token);
foreach (IToken known in knownTokens)
{
foreach (IRank rank in known.Scores)
{
double val = negated ? 1.0f - rank.Score : rank.Score;
if (!dic.ContainsKey(rank.Id))
{
dic.Add(rank.Id, new List <double>()
{
val
});
}
else
{
dic[rank.Id].Add(val);
}
}
}
foreach (KeyValuePair <int, List <double> > kv in dic)
{
ICategory category = GetCategory(kv.Key);
if (category == null)
{
continue;
}
IRankedCategory ranked = new RankedCategory()
{
Id = category.Id,
Name = category.Name,
LinkedCategories = category.LinkedCategories,
ParentCategory = category.ParentCategory
};
foreach (var cat in kv.Value)
{
ranked.Score += (float)cat;
}
if (ranked.Score <= 0)
{
continue;
}
int index = ret.IndexOf(ranked);
if (index > -1)
{
ret[index].Score += ranked.Score;
}
else
{
ret.Add(ranked);
}
divisor += ranked.Score;
}
}
foreach (IRankedCategory cat in ret)
{
cat.Score = cat.Score / divisor;
}
ret.Sort();
return(ret);
}