unsafe public DocumentResultForSort(DocumentResult *pDocResult)
: this(pDocResult->DocId, pDocResult->Score, pDocResult->PayloadData)
{
}
unsafe private void CalculateWithPosition(Core.SFQL.Parse.DocumentResultWhereDictionary upDict,
ref Core.SFQL.Parse.DocumentResultWhereDictionary docIdRank, WordIndexForQuery[] wordIndexes)
{
Array.Sort(wordIndexes);
MinResultCount = _DBProvider.Table.GroupByLimit;
double ratio = 1;
if (wordIndexes.Length > 1)
{
ratio = (double)2 / (double)(wordIndexes.Length - 1);
}
//Get max word doc list count
int maxWordDocListCount = 0;
int documentSum = 0;
foreach (WordIndexForQuery wifq in wordIndexes)
{
maxWordDocListCount += wifq.WordIndex.Count;
}
maxWordDocListCount += maxWordDocListCount / 2;
if (maxWordDocListCount > 1024 * 1024)
{
maxWordDocListCount = 1024 * 1024;
}
if (docIdRank.Count == 0)
{
if (maxWordDocListCount > DocumentResultWhereDictionary.DefaultSize)
{
docIdRank = new Core.SFQL.Parse.DocumentResultWhereDictionary(maxWordDocListCount);
}
}
Query.PerformanceReport performanceReport = new Hubble.Core.Query.PerformanceReport("Calculate");
//Merge
bool oneWordOptimize = this._QueryParameter.CanLoadPartOfDocs && this._QueryParameter.NoAndExpression && wordIndexes.Length == 1;
for (int i = 0; i < wordIndexes.Length; i++)
{
WordIndexForQuery wifq = wordIndexes[i];
//Entity.DocumentPositionList[] wifqDocBuf = wifq.WordIndex.DocPositionBuf;
Entity.DocumentPositionList docList = wifq.WordIndex.GetNext();
int j = 0;
int oneWordMaxCount = 0;
while (docList.DocumentId >= 0)
{
Core.SFQL.Parse.DocumentResultPoint drp;
drp.pDocumentResult = null;
if (oneWordOptimize)
{
if (j > MinResultCount)
{
if (oneWordMaxCount > docList.Count)
{
docList = wifq.WordIndex.GetNext();
j++;
continue;
}
}
else
{
if (oneWordMaxCount < docList.Count)
{
oneWordMaxCount = docList.Count;
}
}
}
if (j > wifq.RelTotalCount)
{
break;
}
long score = (long)wifq.FieldRank * (long)wifq.WordRank * (long)wifq.Idf_t * (long)docList.Count * (long)1000000 / ((long)wifq.Sum_d_t * (long)docList.TotalWordsInThisDocument);
if (score < 0)
{
//Overflow
score = long.MaxValue - 4000000;
}
bool exits = drp.pDocumentResult != null;
if (!exits && i > 0)
{
exits = docIdRank.TryGetValue(docList.DocumentId, out drp);
}
if (exits)
{
drp.pDocumentResult->Score += score;
double queryPositionDelta = wifq.FirstPosition - drp.pDocumentResult->LastWordIndexFirstPosition;
double positionDelta = docList.FirstPosition - drp.pDocumentResult->LastPosition;
double delta = Math.Abs(queryPositionDelta - positionDelta);
if (delta < 0.031)
{
delta = 0.031;
}
else if (delta <= 1.1)
{
delta = 0.5;
}
else if (delta <= 2.1)
{
delta = 1;
}
delta = Math.Pow((1 / delta), ratio) * docList.Count * drp.pDocumentResult->LastCount /
(double)(wifq.QueryCount * drp.pDocumentResult->LastWordIndexQueryCount);
//some words missed
//if (i - drp.pDocumentResult->LastIndex > 1)
//{
// int sumWordRank = 10;
// for (int k = drp.pDocumentResult->LastIndex + 1; k < i; k++)
// {
// sumWordRank += wordIndexes[k].WordRank;
// }
// delta /= (double)sumWordRank;
//}
drp.pDocumentResult->Score = (long)(drp.pDocumentResult->Score * delta);
drp.pDocumentResult->LastIndex = (UInt16)i;
drp.pDocumentResult->LastPosition = docList.FirstPosition;
drp.pDocumentResult->LastCount = (UInt16)docList.Count;
drp.pDocumentResult->LastWordIndexFirstPosition = (UInt16)wifq.FirstPosition;
}
else
{
//some words missed
//if (i > 0)
//{
// int sumWordRank = 10;
// for (int k = 0; k < i; k++)
// {
// sumWordRank += wordIndexes[k].WordRank;
// }
// double delta = 1 / (double)sumWordRank;
// score = (long)(score * delta);
//}
bool notInDict = false;
if (_NotInDict != null)
{
if (_NotInDict.ContainsKey(docList.DocumentId))
{
notInDict = true;
}
}
if (!notInDict)
{
if (upDict == null)
{
DocumentResult docResult = new DocumentResult(docList.DocumentId, score, wifq.FirstPosition, wifq.QueryCount, docList.FirstPosition, docList.Count, i);
docIdRank.Add(docList.DocumentId, docResult);
}
else
{
if (!upDict.Not)
{
if (upDict.ContainsKey(docList.DocumentId))
{
DocumentResult docResult = new DocumentResult(docList.DocumentId, score, wifq.FirstPosition, wifq.QueryCount, docList.FirstPosition, docList.Count, i);
docIdRank.Add(docList.DocumentId, docResult);
}
}
else
{
if (!upDict.ContainsKey(docList.DocumentId))
{
DocumentResult docResult = new DocumentResult(docList.DocumentId, score, wifq.FirstPosition, wifq.QueryCount, docList.FirstPosition, docList.Count, i);
docIdRank.Add(docList.DocumentId, docResult);
}
}
}
}
}
docList = wifq.WordIndex.GetNext();
j++;
if (j > wifq.WordIndex.Count)
{
break;
}
}
}
//Merge score if upDict != null
if (upDict != null)
{
if (!upDict.Not)
{
foreach (int docid in docIdRank.Keys)
{
DocumentResult *upDrp;
if (upDict.TryGetValue(docid, out upDrp))
{
DocumentResult *drpResult;
if (docIdRank.TryGetValue(docid, out drpResult))
{
drpResult->Score += upDrp->Score;
}
}
}
}
}
if (wordIndexes.Length > 1)
{
List <DocumentResult> reduceDocs = new List <DocumentResult>(docIdRank.Count);
int lstIndex = wordIndexes.Length - 1;
foreach (Core.SFQL.Parse.DocumentResultPoint drp in docIdRank.Values)
{
DocumentResult *dr = drp.pDocumentResult;
//DocumentResult* dr1 = drp.pDocumentResult;
if (dr->LastIndex != lstIndex)
{
int sumWordRank = 10;
for (int k = dr->LastIndex + 1; k <= lstIndex; k++)
{
sumWordRank += wordIndexes[k].WordRank;
}
double delta = 1 / (double)sumWordRank;
dr->Score = (long)((double)dr->Score * delta);
}
if (dr->Score < 0)
{
dr->Score = long.MaxValue / 10;
}
}
}
performanceReport.Stop();
documentSum += docIdRank.Count;
if (documentSum > _TotalDocuments)
{
documentSum = _TotalDocuments;
}
DeleteProvider delProvider = _DBProvider.DelProvider;
int deleteCount = delProvider.Filter(docIdRank);
if (_QueryParameter.CanLoadPartOfDocs && upDict == null)
{
if (docIdRank.Count < wordIndexes[wordIndexes.Length - 1].RelTotalCount)
{
if (wordIndexes.Length > 1)
{
if (wordIndexes[wordIndexes.Length - 1].RelTotalCount > _DBProvider.MaxReturnCount)
{
documentSum += wordIndexes[wordIndexes.Length - 1].RelTotalCount - _DBProvider.MaxReturnCount;
}
if (documentSum > _TotalDocuments)
{
documentSum = _TotalDocuments;
}
docIdRank.RelTotalCount = documentSum;
}
else
{
docIdRank.RelTotalCount = wordIndexes[wordIndexes.Length - 1].RelTotalCount;
}
}
}
docIdRank.RelTotalCount -= deleteCount;
}
