private IDictionary <string, double> ExtractTagRank(string text, IEnumerable <string> allowPos)
{
if (allowPos.IsEmpty())
{
allowPos = DefaultPosFilter;
}
var g = new UndirectWeightedGraph();
var cm = new Dictionary <string, int>();
var words = PosSegmenter.Cut(text).ToList();
for (var i = 0; i < words.Count(); i++)
{
var wp = words[i];
if (!PairFilter(allowPos, wp))
{
continue;
}
for (var j = i + 1; j < i + Span; j++)
{
if (j >= words.Count)
{
break;
}
if (!PairFilter(allowPos, words[j]))
{
continue;
}
// TODO: better separator.
var key = wp.Word + "$" + words[j].Word;
if (!cm.ContainsKey(key))
{
cm[key] = 0;
}
cm[key] += 1;
}
}
foreach (var p in cm)
{
var terms = p.Key.Split('$');
g.AddEdge(terms[0], terms[1], p.Value);
}
return(g.Rank());
}
private IDictionary<string, double> ExtractTagRank(string text, IEnumerable<string> allowPos)
{
if (allowPos.IsEmpty())
{
allowPos = DefaultPosFilter;
}
var g = new UndirectWeightedGraph();
var cm = new Dictionary<string, int>();
var words = PosSegmenter.Cut(text).ToList();
for (var i = 0; i < words.Count(); i++)
{
var wp = words[i];
if (PairFilter(wp))
{
for (var j = i + 1; j < i + Span; j++)
{
if (j >= words.Count)
{
break;
}
if (!PairFilter(words[j]))
{
continue;
}
// TODO: better separator.
var key = wp.Word + "$" + words[j].Word;
if (!cm.ContainsKey(key))
{
cm[key] = 0;
}
cm[key] += 1;
}
}
}
foreach (var p in cm)
{
var terms = p.Key.Split('$');
g.AddEdge(terms[0], terms[1], p.Value);
}
return g.Rank();
}