Spelling Suggestor in ASP.NET

Question

Hi All,

I need to build a spelling suggestor in ASP.NET... The below are my requirement.

Case 1: My list of words are not just englist words but will also includes some codes like AACD, ESSA, BIMER etc... I may provide such (New) words from Database.

Case 2: I also need a similar spelling suggestor for Non-English Language, Even here, I can provide a list of words from a Database.

Now, Any suggestions as to how I implement the same is welcome.

Further, I found the following Python Code, from a website, which states it returns the most probable suggestion (in english ofcourse). If someone can translate it into C# that would be really helpful.

 import re, collections
    def words(text): return re.findall('[a-z]+', text.lower()) 
    def train(features):  
        model = collections.defaultdict(lambda: 1) 
         for f in features:  
         model[f] += 1
        return model
    NWORDS = train(words(file('big.txt').read()))
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    def edits1(word):
        s = [(word[:i], word[i:]) for i in range(len(word) + 1)]   
        deletes    = [a + b[1:] for a, b in s if b] 
        transposes = [a + b[1] + b[0] + b[2:] for a, b in s if len(b)>1]
        replaces   = [a + c + b[1:] for a, b in s for c in alphabet if b]   
        inserts    = [a + c + b     for a, b in s for c in alphabet]   
    return set(deletes + transposes + replaces + inserts)
    def known_edits2(word):    
        return set(e2 for e1 in edits1(word) for e2 in edits1(e1) if e2 in NWORDS)

    def known(words): return set(w for w in words if w in NWORDS)
    def correct(word):    
        candidates = known([word]) or known(edits1(word)) or known_edits2(word) or [word]
        return max(candidates, key=NWORDS.get)

Thanks - Raja

Answer 1

The commercial product I work on uses NETSpell Spell Checker, it has a dictionary tool that allows you to add custom dictionaries and words.

Answer 2

Another alternative is NHunspel

NHunspell is a free open source spell checker for the .NET Framework. C# and Visual Basic sample code is available for spell checking, hyphenation and sysnonym lookup via thesaurus.

// Hunspell
using (Hunspell hunspell =
new Hunspell("en_us.aff", "en_us.dic"))
{
    bool correct = hunspell.Spell("Recommendation");
    var suggestions = hunspell.Suggest("Recommendatio");
    foreach (string suggestion in suggestions)
    {
        Console.WriteLine("Suggestion is: " + suggestion );
    }
}