public static double GetScore(string srcStr, string tarStr, bool caseFlag)
{
double score = 1.0;
// check case
string src = srcStr;
string tar = tarStr;
if (caseFlag == false) // not case sensitive
{
src = srcStr.ToLower();
tar = tarStr.ToLower();
}
int srcLen = src.Length;
int tarLen = tar.Length;
// not the same String
if (src.Equals(tar) == false)
{
// get maxLength
int maxLen = Math.Max(srcLen, tarLen);
// add split penalty
maxLen += OrthographicUtil.GetSplitPenalty(src, tar);
// cal leadOverlap
int minLen = Math.Min(srcLen, tarLen);
int leadOverlap = 0;
int ii = 0;
while ((ii < minLen) && (src[ii] == tar[ii]))
{
leadOverlap++;
ii++;
}
// cal endOverlap
int trailOverlap = 0;
int jj = 0;
while ((jj < minLen) && (src[srcLen - 1 - jj] == tar[tarLen - 1 - jj]))
{
trailOverlap++;
jj++;
}
// if match all charactrs to minLen
// "123" and "123123" should be 0.55 not 1.0
// spel should have higher score with spell than speil
if (leadOverlap == minLen)
{
score = (1.0 * leadOverlap + 0.1 * trailOverlap) / (1.0 * maxLen);
}
// spell should have higher score with sspell than nspell
else if (trailOverlap == minLen)
{
score = (0.1 * leadOverlap + 1.0 * trailOverlap) / (1.0 * maxLen);
}
else
{
score = (1.0 * leadOverlap + 1.0 * trailOverlap) / (1.0 * maxLen);
}
}
// make sure score is between 0.0 ~ 1.0
score = ((score > 1.0) ? 1.0 : score);
return(score);
}
private static void TestEdSimScore(string srcStr, string tarStr)
{
double score = GetScore(srcStr, tarStr);
int cost = EditDistance.GetEditDistance(srcStr, tarStr, 96, 90, 100, 94, 10, false);
int penalty = OrthographicUtil.GetSplitPenalty(srcStr, tarStr, 90);
Console.WriteLine(srcStr + "|" + tarStr + "|" + cost + "|" + penalty + "|" + score);
}
public static double GetScore(string srcStr, string tarStr, int deleteCost, int insertCost, int replaceCost, int swapCost, int caseChangeCost, bool enhancedFlag, int splitCost)
{
int cost = EditDistance.GetEditDistance(srcStr, tarStr, deleteCost, insertCost, replaceCost, swapCost, caseChangeCost, enhancedFlag);
int penalty = OrthographicUtil.GetSplitPenalty(srcStr, tarStr, splitCost);
double score = OrthographicUtil.GetNormScore(cost + penalty, 1000.0);
return(score);
}
// TBD: read the values from config file
public static double GetScore(string srcStr, string tarStr)
{
/// <summary>
/// init value form ensemble
/// int deleteCost = 95;
/// int insertCost = 95;
/// int replaceCost = 100;
/// int swapCost = 90;
///
/// </summary>
// new value
int deleteCost = 100;
int insertCost = 100;
int replaceCost = 100;
int swapCost = 100;
int caseChangeCost = 10;
bool enhancedFlag = false;
int splitCost = insertCost;
int maxCodeLength = 10;
/// <summary>
/// Test on different phonetic methods
/// String srcM2 = Metaphone2.GetCode(srcStr, maxCodeLength);
/// String tarM2 = Metaphone2.GetCode(tarStr, maxCodeLength);
/// String srcM2 = RefinedSoundex.GetCode(srcStr);
/// String tarM2 = RefinedSoundex.GetCode(tarStr);
/// String srcM2 = Caverphone2.GetCaverphone(srcStr);
/// String tarM2 = Caverphone2.GetCaverphone(tarStr);
/// String srcM2 = Metaphone.GetMetaphone(srcStr, maxCodeLength);
/// String tarM2 = Metaphone.GetMetaphone(tarStr, maxCodeLength);
/// Metaphone3 m3 = new Metaphone3();
/// m3.SetKeyLength(maxCodeLength);
/// String srcM2 = m3.GetMetaphone(srcStr);
/// String tarM2 = m3.GetMetaphone(tarStr);
///
/// </summary>
string srcM2 = Metaphone2.GetCode(srcStr, maxCodeLength);
string tarM2 = Metaphone2.GetCode(tarStr, maxCodeLength);
int cost = EditDistance.GetEditDistance(srcM2, tarM2, deleteCost, insertCost, replaceCost, swapCost, caseChangeCost, enhancedFlag);
int penalty = OrthographicUtil.GetSplitPenalty(srcStr, tarStr, splitCost);
double score = OrthographicUtil.GetNormScore(cost + penalty, 1000.0);
return(score);
}
