private IEnumerable <PhraseIdWithRankModel> GetTopTen(string keyword)
{
var outp = new List <PhraseIdWithRankModel>(10);
var i = 0;
foreach (var phrase in Phrases.Select(x => new { x.Id, x.Value }))
{
var rank = StringMetrics.Levenstein(keyword, phrase.Value).Value;
if (i < 10)
{
outp.Add(new PhraseIdWithRankModel
{
PhraseId = phrase.Id,
Rank = rank
});
i++;
continue;
}
if (i == 10)
{
outp.Sort(new PhraseWithRankModelComparer());
}
if (!(rank > outp[9].Rank))
{
continue;
}
outp.RemoveAt(9);
outp.Add(new PhraseIdWithRankModel
{
PhraseId = phrase.Id,
Rank = rank
});
outp.Sort(new PhraseWithRankModelComparer());
}
return(outp);
}
public static List <string> GetRanksForString(string key, int take = 5, int skip = 0)
{
var outp = new HashSet <KeywordPhraseReference>();
using (var ctx = new TypeFineContext())
{
var keyword = ctx.Keywords.SingleOrDefault(x => x.Value == key);
if (keyword != null)
{
if (keyword.Phrase != null)
{
return new List <string> {
keyword.Phrase.Value
}
}
;
var loveStories = ctx.KeywordPhraseReferences.Include("Phrase").Where(x => x.Keyword.Value == key);
if (!loveStories.Any())
{
var phrases = ctx.Phrases.ToList();
var lastRank = 0d;
foreach (var phrase in phrases)
{
var rank = StringMetrics.Levenstein(key, phrase.Value).Value;
if (outp.Count() < take)
{
outp.Add(new KeywordPhraseReference
{
Convergence = rank,
UserWeight = 0,
Keyword = keyword,
Phrase = phrase
});
}
else
{
if (!(rank > lastRank))
{
continue;
}
outp.Add(new KeywordPhraseReference
{
Convergence = rank,
UserWeight = 0,
Keyword = keyword,
Phrase = phrase
});
}
var sort2 = outp.OrderByDescending(x => x.Convergence).Skip(skip).Take(take);
outp = new HashSet <KeywordPhraseReference>(sort2);
lastRank = outp.Last().Convergence;
}
ctx.KeywordPhraseReferences.AddRange(outp);
ctx.SaveChanges();
return(outp.Select(x => x.Phrase.Value).ToList());
}
var result = loveStories.ToList().OrderBy(x => x.CompositeConvergance);
return(result.Select(x => x.Phrase.Value).ToList());
}
throw new Exception("Missing keyword");
}
}
}
