/// <summary>
/// Compare two object o1 and o2. Both objects o1 and o2 are
/// NoisyChannelScore. The compare algorithm:
/// </summary>
/// <param name="o1"> first object to be compared </param>
/// <param name="o2"> second object to be compared
/// </param>
/// <returns> a negative integer, 0, or positive integer to represent the
/// object o1 is less, equals, or greater than object 02. </returns>
public virtual int Compare(NoisyChannelScore o1, NoisyChannelScore o2)
{
// 1. compare how many words for the candidates
// for now, we assume less word is better,
// i.e. whatever is better than "what ever"
int @out = 0;
string cand1 = ((NoisyChannelScore)o1).GetCandStr();
string cand2 = ((NoisyChannelScore)o2).GetCandStr();
int wordNo1 = TermUtil.GetWordNo(cand1);
int wordNo2 = TermUtil.GetWordNo(cand2);
if (wordNo1 != wordNo2)
{
@out = wordNo1 - wordNo2; // less wordNo has higher rank
}
else
{
// 2. compare noisy Channel score
double score1 = ((NoisyChannelScore)o1).GetScore();
double score2 = ((NoisyChannelScore)o2).GetScore();
// SCR-2: use a fixed number to ensure result is not 0.
if (score2 > score1)
{
// from high to low
@out = 1;
}
else if (score2 < score1)
{
@out = -1;
}
else
{
// 3. compare by orthographic score
OrthographicScore oScore1 = ((NoisyChannelScore)o1).GetOScore();
OrthographicScore oScore2 = ((NoisyChannelScore)o2).GetOScore();
if (oScore1.GetScore() != oScore2.GetScore())
{
OrthographicScoreComparator <OrthographicScore> osc = new OrthographicScoreComparator <OrthographicScore>();
@out = osc.Compare(oScore1, oScore2);
}
else // 4. hannelScore
{
FrequencyScore fScore1 = ((NoisyChannelScore)o1).GetFScore();
FrequencyScore fScore2 = ((NoisyChannelScore)o2).GetFScore();
if (fScore1.GetScore() != fScore2.GetScore())
{
FrequencyScoreComparator <FrequencyScore> fsc = new FrequencyScoreComparator <FrequencyScore>();
@out = fsc.Compare(fScore1, fScore2);
}
else // 4. alphabetic order
{
@out = cand2.CompareTo(cand1);
}
}
}
}
return(@out);
}
// return candidate scoreObj list sorted by score, higher first
public static List <FrequencyScore> GetCandidateScoreList(HashSet <string> candidates, WordWcMap wordWcMap)
{
HashSet <FrequencyScore> candScoreSet = GetCandidateScoreSet(candidates, wordWcMap);
List <FrequencyScore> candScoreList = new List <FrequencyScore>(candScoreSet);
// sort the list, higher fo first
FrequencyScoreComparator <FrequencyScore> fsc = new FrequencyScoreComparator <FrequencyScore>();
candScoreList.Sort(fsc);
return(candScoreList);
}
public static void PrintFrequencyScore(HashSet <string> candSet, WordWcMap wordWcMap, int maxCandNo, bool debugFlag)
{
if (debugFlag == true)
{
FrequencyScoreComparator <FrequencyScore> fsc = new FrequencyScoreComparator <FrequencyScore>();
HashSet <FrequencyScore> fScoreSet = RankByFrequency.GetCandidateScoreSet(candSet, wordWcMap);
var list = fScoreSet.OrderBy(x => x, fsc).Take(maxCandNo).Select(obj => obj.ToString()).ToList();
foreach (var item in list)
{
DebugPrint.PrintFScore(item, debugFlag);
}
}
}
// private methods
private static int RunTest(bool detailFlag, long limitNo)
{
// init dic
string configFile = "../data/Config/cSpell.properties";
CSpellApi cSpellApi = new CSpellApi(configFile);
cSpellApi.SetRankMode(CSpellApi.RANK_MODE_FREQUENCY);
WordWcMap wordWcMap = cSpellApi.GetWordWcMap();
// provide cmdLine interface
int returnValue = 0;
FrequencyScoreComparator <FrequencyScore> fsc = new FrequencyScoreComparator <FrequencyScore>();
try {
StreamReader stdInput = new StreamReader(Console.OpenStandardInput());
try {
string inText = null;
Console.WriteLine("- Please input a text (type \"Ctl-d\" to quit) > ");
while (!string.ReferenceEquals((inText = stdInput.ReadLine()), null))
{
// ---------------------------------
// Get spell correction on the input
// ---------------------------------
// get all possible candidates
HashSet <string> candSet = NonWord1To1Candidates.GetCandidates(inText, cSpellApi);
Console.WriteLine("-- canSet.size(): " + candSet.Count);
// get final suggestion
string topRankStr = GetTopRankStr(candSet, wordWcMap);
Console.WriteLine("- top rank str: " + topRankStr);
// print details
if (detailFlag == true)
{
HashSet <FrequencyScore> candScoreSet = GetCandidateScoreSet(candSet, wordWcMap);
Console.WriteLine("------ Suggestion List ------");
var list = candScoreSet.OrderBy(x => x, fsc).Take((int)limitNo).Select(obj => obj.ToString()).ToList();
foreach (var item in list)
{
Console.WriteLine(item);
}
}
}
} catch (Exception e2) {
Console.Error.WriteLine(e2.Message);
returnValue = -1;
}
} catch (Exception e) {
Console.Error.WriteLine(e.Message);
returnValue = -1;
}
return(returnValue);
}
// by combination, O, N, F, C
private int compareByCombo(CSpellScore o1, CSpellScore o2)
{
int @out = 0;
OrthographicScore oScore1 = ((CSpellScore)o1).GetOScore();
OrthographicScore oScore2 = ((CSpellScore)o2).GetOScore();
NoisyChannelScore nScore1 = ((CSpellScore)o1).GetNScore();
NoisyChannelScore nScore2 = ((CSpellScore)o2).GetNScore();
FrequencyScore fScore1 = ((CSpellScore)o1).GetFScore();
FrequencyScore fScore2 = ((CSpellScore)o2).GetFScore();
ContextScore cScore1 = ((CSpellScore)o1).GetCScore();
ContextScore cScore2 = ((CSpellScore)o2).GetCScore();
// 1. compared by orthographic score, best
if (oScore1.GetScore() != oScore2.GetScore())
{
OrthographicScoreComparator <OrthographicScore> osc = new OrthographicScoreComparator <OrthographicScore>();
@out = osc.Compare(oScore1, oScore2);
}
// 2. compared by noise channel score, 2nd best
else if (nScore1.GetScore() != nScore2.GetScore())
{
NoisyChannelScoreComparator <NoisyChannelScore> nsc = new NoisyChannelScoreComparator <NoisyChannelScore>();
@out = nsc.Compare(nScore1, nScore2);
}
// 3. compared by pure frequency score, 3rd best
else if (fScore1.GetScore() != fScore2.GetScore())
{
FrequencyScoreComparator <FrequencyScore> fsc = new FrequencyScoreComparator <FrequencyScore>();
@out = fsc.Compare(fScore1, fScore2);
}
// 4. compared by context score, 4 last
else if (cScore1.GetScore() != cScore2.GetScore())
{
ContextScoreComparator <ContextScore> csc = new ContextScoreComparator <ContextScore>();
@out = csc.Compare(cScore1, cScore2);
}
// 5. alphabetic order
else
{
string cand1 = ((CSpellScore)o1).GetCandStr();
string cand2 = ((CSpellScore)o2).GetCandStr();
@out = cand2.CompareTo(cand1);
}
return(@out);
}
private int compareByFrequency(CSpellScore o1, CSpellScore o2)
{
int @out = 0;
FrequencyScore fScore1 = ((CSpellScore)o1).GetFScore();
FrequencyScore fScore2 = ((CSpellScore)o2).GetFScore();
// 1. compared by context score, 4 last
if (fScore1.GetScore() != fScore2.GetScore())
{
FrequencyScoreComparator <FrequencyScore> fsc = new FrequencyScoreComparator <FrequencyScore>();
@out = fsc.Compare(fScore1, fScore2);
}
// 2. alphabetic order
else
{
string cand1 = ((CSpellScore)o1).GetCandStr();
string cand2 = ((CSpellScore)o2).GetCandStr();
@out = cand2.CompareTo(cand1);
}
return(@out);
}
