public IList <Word> SemanticallyNear(string word, int maxEdits, IDistanceResolver distanceResolver = null)
{
if (distanceResolver == null)
{
distanceResolver = new LevenshteinDistanceResolver(word, maxEdits);
}
var words = new List <Word>();
LcrsNode node;
var prefix = word[0].ToString();
if (TryFindDepthFirst(prefix, out node))
{
if (node.EndOfWord &&
distanceResolver.IsValid(node.Value, 0) &&
distanceResolver.GetDistance(word, prefix) <= maxEdits)
{
words.Add(new Word(word[0].ToString()));
}
WithinEditDistanceDepthFirst(
word, word[0].ToString(), words, 1, maxEdits, distanceResolver);
}
return(words);
}
public IEnumerable<Word> SemanticallyNear(string word, int maxEdits, IDistanceResolver distanceResolver = null)
{
if (distanceResolver == null) distanceResolver = new LevenshteinDistanceResolver(word, maxEdits);
var compressed = new List<Word>();
if (LeftChild != null)
{
LeftChild.WithinEditDistanceDepthFirst(word, string.Empty, compressed, 0, maxEdits, distanceResolver);
}
return compressed;
}
public IEnumerable <Word> SemanticallyNear(string word, int maxEdits, IDistanceResolver distanceResolver = null)
{
if (distanceResolver == null)
{
distanceResolver = new LevenshteinDistanceResolver(word, maxEdits);
}
var words = new List <Word>();
while (true)
{
LcrsNode node;
var prefix = word[0].ToString();
if (TryFindDepthFirst(prefix, out node))
{
if (node.EndOfWord &&
distanceResolver.IsValid(node.Value, 0) &&
distanceResolver.GetDistance(word, prefix) <= maxEdits)
{
words.Add(new Word(word[0].ToString()));
}
WithinEditDistanceDepthFirst(
word, word[0].ToString(), words, 1, maxEdits, distanceResolver);
}
if (HasMoreSegments())
{
GoToNextSegment();
}
else
{
break;
}
}
return(words);
}
public void Can_calculate_distance()
{
var query = "rambo";
var auto = new LevenshteinDistanceResolver(query, 1);
Assert.IsTrue(auto.IsValid('r', 0));
Assert.IsTrue(auto.IsValid('a', 1));
Assert.IsTrue(auto.IsValid('m', 2));
Assert.IsTrue(auto.IsValid('b', 3));
Assert.IsTrue(auto.IsValid('o', 4));
Assert.IsTrue(auto.IsValid('x', 0));
Assert.IsTrue(auto.IsValid('a', 1));
Assert.IsTrue(auto.IsValid('m', 2));
Assert.IsTrue(auto.IsValid('b', 3));
Assert.IsTrue(auto.IsValid('o', 4));
Assert.IsTrue(auto.IsValid('x', 0));
Assert.IsTrue(auto.IsValid('a', 1));
Assert.IsTrue(auto.IsValid('m', 2));
Assert.IsTrue(auto.IsValid('b', 3));
Assert.IsTrue(auto.IsValid('o', 4));
Assert.IsFalse(auto.IsValid('x', 5));
Assert.IsTrue(auto.IsValid('r', 0));
Assert.IsTrue(auto.IsValid('a', 1));
Assert.IsTrue(auto.IsValid('m', 2));
Assert.IsTrue(auto.IsValid('b', 3));
Assert.IsTrue(auto.IsValid('o', 4));
Assert.IsTrue(auto.IsValid('x', 5));
Assert.IsTrue(auto.IsValid('r', 0));
Assert.IsTrue(auto.IsValid('a', 1));
Assert.IsTrue(auto.IsValid('m', 2));
Assert.IsTrue(auto.IsValid('b', 3));
Assert.IsTrue(auto.IsValid('o', 4));
Assert.IsTrue(auto.IsValid('x', 5));
Assert.IsFalse(auto.IsValid('x', 6));
}
