/// <summary>
/// Clones this instance.
/// </summary>
/// <returns></returns>
public PinglishString Clone()
{
var cloned = new PinglishString();
cloned.PersianLetters.AddRange(PersianLetters);
cloned.EnglishLetters.AddRange(EnglishLetters);
return(cloned);
}
public PinglishString ToLower()
{
PinglishString cloned = Clone();
for (int i = 0; i < EnglishLetters.Count; i++)
{
cloned.EnglishLetters[i] = char.ToLower(EnglishLetters[i]);
}
return(cloned);
}
private double GetProbability(PinglishString s)
{
double prob = 1;
try
{
for (int i = 0; i < s.Length; i++)
{
prob *= m_mappingDistribution[s.EnglishLetters[i]][s.PersianLetters[i]];
}
}
catch (Exception)
{
prob = 0.5;
}
return(prob);
}
/// <summary>
///
/// </summary>
/// <param name="list"></param>
/// <param name="englishLetter"></param>
/// <param name="persianLetters">Must be sorted based on their weights</param>
public static void Update(this List <PinglishString> list, char englishLetter, List <string> persianLetters)
{
int count = list.Count;
while (count > 0)
{
PinglishString original = list[0];
foreach (var value in persianLetters)
{
PinglishString fs = original.Clone();
fs.Append(value, englishLetter);
list.Add(fs);
}
list.RemoveAt(0);
--count;
}
}
public void LearnWordMapping(PinglishString word, int prefixGram, int postfixGram)
{
var len = word.EnglishLetters.Count;
for (int i = 0; i < len; ++i)
{
var prefix = GetPrefixForIndex(word.EnglishString, i, prefixGram);
var postfix = GetPostfixForIndex(word.EnglishString, i, postfixGram);
if (prefix.Length == prefixGram && postfix.Length == postfixGram)
{
if (word.EnglishLetters[i] == 'h' && prefix == "" && postfix == "laghi")
{
int kiloo;
kiloo = 4;
}
UpdateDictionary(
word.EnglishLetters[i], prefix, postfix, word.PersianLetters[i]);
}
}
}
public void Learn(PinglishString word, bool appendToInternalDataset)
{
for (int i = 0; i < word.Length; i++)
{
char enChar = word.EnglishLetters[i];
string faChar = word.PersianLetters[i];
if (!m_counter.ContainsKey(enChar))
{
m_counter.Add(enChar, new Dictionary <string, int>());
}
if (!m_counter[enChar].ContainsKey(faChar))
{
m_counter[enChar].Add(faChar, 0);
}
if (!m_sum.ContainsKey(enChar))
{
m_sum.Add(enChar, 0);
}
m_counter[enChar][faChar] += 1;
m_sum[enChar] += 1;
}
for (int prefixGram = 3; prefixGram >= 0; prefixGram--)
{
for (int postfixGram = 5 - prefixGram; postfixGram >= 0; postfixGram--)
{
m_mappingSequences.LearnWordMapping(word, prefixGram, postfixGram);
}
}
if (appendToInternalDataset && !m_pinglishDataSet.Contains(word))
{
m_pinglishDataSet.Add(word);
}
}
public static void Update(this List <PinglishString> list, char englishLetter, Dictionary <string, double> persianLetters)
{
if (persianLetters.Count == 0)
{
return;
}
int count = list.Count;
while (count > 0)
{
PinglishString original = list[0];
foreach (var value in persianLetters.OrderByDescending(item => item.Value))
{
PinglishString fs = original.Clone();
fs.Append(value.Key, englishLetter);
list.Add(fs);
}
list.RemoveAt(0);
--count;
}
}
