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TaxonomyBuilder.c
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TaxonomyBuilder.c
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#include "TaxonomyBuilder.h"
#include "KnowledgeBase.h"
#include "TBox.h"
#include "RBox.h"
#include "ABox.h"
#include "Expressivity.h"
#include "Taxonomy.h"
#include "TaxonomyNode.h"
#include "Params.h"
#include "ReazienerUtils.h"
extern ExprNode* EXPRNODE_TOP;
extern ExprNode* EXPRNODE_BOTTOM;
extern int g_iCommentIndent;
TaxonomyBuilder::TaxonomyBuilder()
{
m_pKB = NULL;
m_pTaxonomy = NULL;
m_pSetClasses = NULL;
m_bUseCD = FALSE;
}
// Classify the KB.
Taxonomy* TaxonomyBuilder::classify()
{
START_DECOMMENT2("TaxonomyBuilder::classify");
m_pSetClasses = m_pKB->getClasses();
if( m_pSetClasses == NULL || m_pSetClasses->size() == 0 )
{
m_pTaxonomy = new Taxonomy();
END_DECOMMENT("TaxonomyBuilder::classify");
return m_pTaxonomy;
}
prepare();
ExprNodes aPhaseOne, aPhaseTwo;
if( m_bUseCD )
{
for(ExprNodes::iterator i = m_aOrderedClasses.begin(); i != m_aOrderedClasses.end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
ExprNode2IntMap::iterator iFlag = m_mConceptFlags.find(pC);
if( iFlag != m_mConceptFlags.end() )
{
int iConceptFlag = (int)iFlag->second;
if( iConceptFlag == FLAG_COMPLETELY_DEFINED ||
iConceptFlag == FLAG_PRIMITIVE ||
iConceptFlag == FLAG_OTHER )
{
aPhaseOne.push_back(pC);
}
else
{
aPhaseTwo.push_back(pC);
}
}
}
}
else
{
for(ExprNodes::iterator i = m_aOrderedClasses.begin(); i != m_aOrderedClasses.end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
aPhaseTwo.push_back(pC);
}
}
for(ExprNodes::iterator i = aPhaseOne.begin(); i != aPhaseOne.end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
classify(pC, /* requireTopSearch = */FALSE);
}
aPhaseOne.clear();
for(ExprNodes::iterator i = aPhaseTwo.begin(); i != aPhaseTwo.end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
classify(pC, /* requireTopSearch = */TRUE);
}
aPhaseTwo.clear();
m_pTaxonomy->assertValid();
END_DECOMMENT("TaxonomyBuilder::classify");
return m_pTaxonomy;
}
TaxonomyNode* TaxonomyBuilder::classify(ExprNode* pC, bool bRequireTopSearch/*=TRUE*/)
{
START_DECOMMENT2("TaxonomyBuilder::classify(2)");
printExprNodeWComment("pC=", pC);
bool bSkipTopSearch = FALSE;
bool bSkipBottomSearch = FALSE;
TaxonomyNode* pNode = m_pTaxonomy->getNode(pC);
if( pNode )
{
END_DECOMMENT("TaxonomyBuilder::classify(2)");
return pNode;
}
pNode = checkSatisfiability(pC);
if( pNode )
{
END_DECOMMENT("TaxonomyBuilder::classify(2)");
return pNode;
}
clearMarks();
TaxonomyNodes aSupers, aSubs;
// FIXME: There may be a better thing to do here...
int iConceptFlag = FLAG_OTHER;
ExprNode2IntMap::iterator iFlag = m_mConceptFlags.find(pC);
if( iFlag != m_mConceptFlags.end() )
iConceptFlag = (int)iFlag->second;
bSkipTopSearch = (!bRequireTopSearch && m_bUseCD && (iConceptFlag == FLAG_COMPLETELY_DEFINED));
if( bSkipTopSearch )
{
getCDSupers(pC, &aSupers);
bSkipBottomSearch = TRUE;
}
else
{
doTopSearch(pC, &aSupers);
bSkipBottomSearch = m_bUseCD && ((iConceptFlag == FLAG_PRIMITIVE) && (iConceptFlag == FLAG_COMPLETELY_DEFINED));
}
if( bSkipBottomSearch )
aSubs.push_back(m_pTaxonomy->getBottom());
else
{
if( aSupers.size() == 1 )
{
/*
* if i(pC) has only one super class j(pSup) and j is a subclass of i then
* it means i = j. There is no need to classify i since we
* already know everything about j
*/
TaxonomyNode* pSupNode = ((TaxonomyNode*)(*aSupers.begin()));
ExprNode* pSup = pSupNode->m_pName;
DECOMMENT("CHECKING SUBSUMES");
printExprNodeWComment("pC=", pC);
printExprNodeWComment("pSup=", pSup);
// pC subsumes pSup
if( subsumes(pC, pSup) )
{
m_pTaxonomy->addEquivalentNode(pC, pSupNode);
DECOMMENT("SUBSUMED\n");
END_DECOMMENT("TaxonomyBuilder::classify(2)");
return pSupNode;
}
}
doBottomSearch(pC, &aSupers, &aSubs);
}
pNode = m_pTaxonomy->addNode(pC);
DECOMMENT1("DETECTED SUPERS size=%d\n", aSupers.size());
DECOMMENT1("DETECTED SUBS size=%d\n", aSubs.size());
pNode->addSupers(&aSupers);
pNode->addSubs(&aSubs);
pNode->removeMultiplePaths();
/*
* For told relations maintain explanations.
*/
TaxonomyNode* pToldNode = m_pToldTaxonomy->getNode(pC);
if( pToldNode )
{
// Add the told equivalents to the taxonomy
TaxonomyNode* pDefOrder = pToldNode;
for(ExprNodeSet::iterator i = pDefOrder->m_setEquivalents.begin(); i != pDefOrder->m_setEquivalents.end(); i++ )
{
ExprNode* pEq = (ExprNode*)*i;
m_pTaxonomy->addEquivalentNode(pEq, pNode);
}
for(TaxonomyNodes::iterator i = aSupers.begin(); i != aSupers.end(); i++ )
{
TaxonomyNode* pN = (TaxonomyNode*)*i;
TaxonomyNode* pSupTold = m_pToldTaxonomy->getNode(pN->m_pName);
SetOfExprNodeSet* pExps = pToldNode->getSuperExplanations(pSupTold);
if( pExps )
{
for(SetOfExprNodeSet::iterator j = pExps->begin(); j != pExps->end(); j++ )
{
ExprNodeSet* pExp = (ExprNodeSet*)*j;
pNode->addSuperExplanation(pN, pExp);
}
}
}
}
END_DECOMMENT("TaxonomyBuilder::classify(2)");
return pNode;
}
// Find all of told subsumers already classified and not redundant
void TaxonomyBuilder::getCDSupers(ExprNode* pC, TaxonomyNodes* paSupers)
{
// FIXME: Handle or rule out the null case
TaxonomyNode* pDefOrder = m_pToldTaxonomy->getNode(pC);
if( pDefOrder->m_aSupers.size() > 1 )
{
if( pDefOrder->m_aSupers.size() == 2 )
{
for(TaxonomyNodes::iterator i = pDefOrder->m_aSupers.begin(); i != pDefOrder->m_aSupers.end(); i++ )
{
TaxonomyNode* pDef = (TaxonomyNode*)*i;
if( pDef == m_pToldTaxonomy->getTop())
continue;
TaxonomyNode* pParent = m_pTaxonomy->getNode(pDef->m_pName);
if( pParent == NULL )
{
printf("CD classification of getName(c) failed, told subsumer not classified = ");
printExprNode(pDef->m_pName);
assert(FALSE);
}
paSupers->push_back(pParent);
break;
}
}
else
{
for(TaxonomyNodes::iterator i = pDefOrder->m_aSupers.begin(); i != pDefOrder->m_aSupers.end(); i++ )
{
TaxonomyNode* pDef = (TaxonomyNode*)*i;
if( pDef == m_pToldTaxonomy->getTop())
continue;
TaxonomyNode* pCandidate = m_pTaxonomy->getNode(pDef->m_pName);
if( pCandidate == NULL )
assertFALSE("CD classification of getName(c) failed, told subsumer getNode(pDef->m_pName) not classified");
for(TaxonomyNodes::iterator j = pCandidate->m_aSupers.begin(); j != pCandidate->m_aSupers.end(); j++ )
{
TaxonomyNode* pAncestor = (TaxonomyNode*)*j;
mark(pAncestor, TaxonomyNode::MARKED_TRUE, PROPAGATE_UP);
}
}
for(TaxonomyNodes::iterator i = pDefOrder->m_aSupers.begin(); i != pDefOrder->m_aSupers.end(); i++ )
{
TaxonomyNode* pDef = (TaxonomyNode*)*i;
if( pDef == m_pToldTaxonomy->getTop())
continue;
TaxonomyNode* pCandidate = m_pTaxonomy->getNode(pDef->m_pName);
if( pCandidate->m_bMark == TaxonomyNode::NOT_MARKED )
paSupers->push_back(pCandidate);
}
}
}
if( paSupers->size() == 0 )
paSupers->push_back(m_pTaxonomy->getTop());
}
void TaxonomyBuilder::mark(ExprNodeSet* pSet, ExprNode2Int* pMarked, int bMarkValue)
{
for(ExprNodeSet::iterator i = pSet->begin(); i != pSet->end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
(*pMarked)[pC] = bMarkValue;
}
}
bool TaxonomyBuilder::mark(TaxonomyNode* pNode, int bMarkValue, int iPropagate)
{
if( pNode->m_setEquivalents.find(EXPRNODE_BOTTOM) != pNode->m_setEquivalents.end() )
return TRUE;
if( pNode->m_bMark != TaxonomyNode::NOT_MARKED )
{
if( pNode->m_bMark != bMarkValue )
assertFALSE("Inconsistent classification result ");
else
return FALSE;
}
pNode->m_bMark = bMarkValue;
m_aMarkedNodes.push_back(pNode);
if( iPropagate != NO_PROPAGATE )
{
TaxonomyNodes::iterator iStart, iEnd;
if( iPropagate == PROPAGATE_UP )
{
iStart = pNode->m_aSupers.begin();
iEnd = pNode->m_aSupers.begin();
}
else
{
iStart = pNode->m_aSubs.begin();
iEnd = pNode->m_aSubs.end();
}
for(TaxonomyNodes::iterator i = iStart; i != iEnd; i++ )
{
TaxonomyNode* pN = (TaxonomyNode*)*i;
mark(pN, bMarkValue, iPropagate);
}
}
return TRUE;
}
void TaxonomyBuilder::doTopSearch(ExprNode* pC, TaxonomyNodes* paSupers)
{
START_DECOMMENT2("TaxonomyBuilder::doTopSearch");
mark(m_pTaxonomy->getTop(), TaxonomyNode::MARKED_TRUE, NO_PROPAGATE);
m_pTaxonomy->getBottom()->m_bMark = TaxonomyNode::MARKED_FALSE;
markToldSubsumers(pC);
ExprNodes aDisjoints;
aDisjoints.push_back(pC);
markToldDisjoints(&aDisjoints, TRUE);
TaxonomyNodeSet setVisited;
printExprNodeWComment("Starting search from ", m_pTaxonomy->getTop()->m_pName);
search(TRUE, pC, m_pTaxonomy->getTop(), &setVisited, paSupers);
END_DECOMMENT("TaxonomyBuilder::doTopSearch");
}
void TaxonomyBuilder::markToldSubsumers(ExprNode* pC)
{
TaxonomyNode* pNode = m_pTaxonomy->getNode(pC);
if( pNode )
{
if( !mark(pNode, TaxonomyNode::MARKED_TRUE, PROPAGATE_UP) )
return;
}
if( m_pToldTaxonomy->contains(pC) )
{
// TODO just getting direct supers and letting recursion handle rest
// might be more efficient
ExprNodeSet setSupers;
m_pToldTaxonomy->getFlattenedSubSupers(pC, TRUE, TRUE, &setSupers);
for(ExprNodeSet::iterator i = setSupers.begin(); i != setSupers.end(); i++ )
{
ExprNode* pSup = (ExprNode*)*i;
markToldSubsumers(pSup);
}
}
}
void TaxonomyBuilder::markToldDisjoints(ExprNodes* pInputC, bool bTopSearch)
{
ExprNodeSet setC;
setC.insert(pInputC->begin(), pInputC->end());
for(ExprNodes::iterator i = pInputC->begin(); i != pInputC->end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
if( m_pTaxonomy->contains(pC) )
{
ExprNodeSet setSupers;
m_pTaxonomy->getFlattenedSubSupers(pC, FALSE, TRUE, &setSupers);
setC.insert(setSupers.begin(), setSupers.end());
}
if( m_pToldTaxonomy->contains(pC) )
{
ExprNodeSet setSupers;
m_pToldTaxonomy->getFlattenedSubSupers(pC, FALSE, TRUE, &setSupers);
setC.insert(setSupers.begin(), setSupers.end());
}
}
ExprNodeSet setDisjoints;
for(ExprNodeSet::iterator i = setC.begin(); i != setC.end(); i++ )
{
ExprNode* pA = (ExprNode*)*i;
ExprNode2ExprNodeSetMap::iterator i = m_mapToldDisjoints.find(pA);
if( i != m_mapToldDisjoints.end() )
{
ExprNodeSet* pToldDisjoints = (ExprNodeSet*)i->second;
setDisjoints.insert(pToldDisjoints->begin(), pToldDisjoints->end());
}
}
if( bTopSearch )
{
for(ExprNodeSet::iterator i = setDisjoints.begin(); i != setDisjoints.end(); i++ )
{
ExprNode* pD = (ExprNode*)*i;
TaxonomyNode* pNode = m_pTaxonomy->getNode(pD);
if( pNode )
mark(pNode, TaxonomyNode::MARKED_FALSE, NO_PROPAGATE);
}
}
else
{
for(ExprNodeSet::iterator i = setDisjoints.begin(); i != setDisjoints.end(); i++ )
{
ExprNode* pD = (ExprNode*)*i;
markToldSubsumeds(pD, TaxonomyNode::MARKED_FALSE);
}
}
}
void TaxonomyBuilder::markToldSubsumeds(ExprNode* pC, int iMark)
{
TaxonomyNode* pNode = m_pTaxonomy->getNode(pC);
if( pNode )
{
if( !mark(pNode, iMark, PROPAGAET_DOWN) )
return;
}
if( m_pToldTaxonomy->contains(pC) )
{
ExprNodeSet setSubs;
m_pToldTaxonomy->getFlattenedSubSupers(pC, TRUE, FALSE, &setSubs);
for(ExprNodeSet::iterator i = setSubs.begin(); i != setSubs.end(); i++ )
{
ExprNode* pSub = (ExprNode*)*i;
markToldSubsumeds(pSub, iMark);
}
}
}
void TaxonomyBuilder::search(bool bTopSearch, ExprNode* pC, TaxonomyNode* pX, TaxonomyNodeSet* pVisited, TaxonomyNodes* pResult)
{
START_DECOMMENT2("TaxonomyBuilder::search");
printExprNodeWComment("pC=", pC);
printExprNodeWComment("pX=", pX->m_pName);
TaxonomyNodeSet setPosSucc;
pVisited->insert(pX);
TaxonomyNodes::iterator iStart, iEnd;
if( bTopSearch )
{
iStart = pX->m_aSubs.begin();
iEnd = pX->m_aSubs.end();
}
else
{
iStart = pX->m_aSupers.begin();
iEnd = pX->m_aSupers.end();
}
for(TaxonomyNodes::iterator i = iStart; i != iEnd; i++ )
{
TaxonomyNode* pNext = (TaxonomyNode*)*i;
if( bTopSearch )
{
DECOMMENT("Checking Subsumes");
printExprNodeWComment("Next=", pNext->m_pName);
printExprNodeWComment("subsumes pC=", pC);
if( subsumes(pNext, pC) )
setPosSucc.insert(pNext);
}
else
{
DECOMMENT("Checking Subsumed");
printExprNodeWComment("Next=", pNext->m_pName);
printExprNodeWComment("subsumed pC=", pC);
if( subsumed(pNext, pC) )
setPosSucc.insert(pNext);
}
}
if( setPosSucc.size() == 0 )
{
DECOMMENT1("Search Done(top=%d)\n", bTopSearch);
printExprNodeWComment("pX=", pX->m_pName);
printExprNodeWComment("for pC=", pC);
pResult->push_back(pX);
}
else
{
for(TaxonomyNodeSet::iterator i = setPosSucc.begin(); i != setPosSucc.end(); i++ )
{
TaxonomyNode* pY = (TaxonomyNode*)*i;
if( pVisited->find(pY) == pVisited->end() )
search(bTopSearch, pC, pY, pVisited, pResult);
}
}
END_DECOMMENT("TaxonomyBuilder::search");
}
void TaxonomyBuilder::doBottomSearch(ExprNode* pC, TaxonomyNodes* paSupers, TaxonomyNodes* paSubs)
{
START_DECOMMENT2("TaxonomyBuilder::doBottomSearch");
printExprNodeWComment("pC=", pC);
TaxonomyNodeSet setSearchFrom;
for(TaxonomyNodes::iterator i = paSupers->begin(); i != paSupers->end(); i++ )
{
TaxonomyNode* pSup = (TaxonomyNode*)*i;
collectLeafs(pSup, &setSearchFrom);
}
if( setSearchFrom.size() == 0 )
{
paSubs->push_back(m_pTaxonomy->getBottom());
DECOMMENT("Adding Bottom Node as a sub");
END_DECOMMENT("TaxonomyBuilder::doBottomSearch");
return ;
}
clearMarks();
mark(m_pTaxonomy->getTop(), TaxonomyNode::MARKED_FALSE, NO_PROPAGATE);
m_pTaxonomy->getBottom()->m_bMark = TaxonomyNode::MARKED_TRUE;
markToldSubsumeds(pC, TaxonomyNode::MARKED_TRUE);
for(TaxonomyNodes::iterator i = paSupers->begin(); i != paSupers->end(); i++ )
{
TaxonomyNode* pSup = (TaxonomyNode*)*i;
mark(pSup, TaxonomyNode::MARKED_FALSE, NO_PROPAGATE);
}
TaxonomyNodeSet setVisited;
TaxonomyNodes aSubs;
for(TaxonomyNodeSet::iterator i = setSearchFrom.begin(); i != setSearchFrom.end(); i++ )
{
TaxonomyNode* pN = (TaxonomyNode*)*i;
printExprNodeWComment("searchFrom=", pN->m_pName);
if( subsumed(pN, pC) )
search(FALSE, pC, pN, &setVisited, &aSubs);
}
if( aSubs.size() == 0 )
paSubs->push_back(m_pTaxonomy->getBottom());
else
{
for(TaxonomyNodes::iterator i = aSubs.begin(); i != aSubs.end(); i++ )
paSubs->push_back((TaxonomyNode*)*i);
}
END_DECOMMENT("TaxonomyBuilder::doBottomSearch");
}
void TaxonomyBuilder::collectLeafs(TaxonomyNode* pNode, TaxonomyNodeSet* pLeafs)
{
for(TaxonomyNodes::iterator i = pNode->m_aSubs.begin(); i != pNode->m_aSubs.end(); i++ )
{
TaxonomyNode* pSub = (TaxonomyNode*)*i;
if( pSub->isLeaf() )
pLeafs->insert(pSub);
else
collectLeafs(pSub, pLeafs);
}
}
void TaxonomyBuilder::prepare()
{
START_DECOMMENT2("TaxonomyBuilder::prepare");
reset();
computeToldInformation();
createDefinitionOrder();
computeConceptFlags();
END_DECOMMENT("TaxonomyBuilder::prepare");
}
void TaxonomyBuilder::reset()
{
START_DECOMMENT2("TaxonomyBuilder::reset");
m_iCount = 0;
m_pKB->prepare();
Expressivity* pExpressivity = m_pKB->getExpressivity();
m_bUseCD = (PARAMS_USE_CD_CLASSIFICATION() &&
m_pKB->m_pTBox->getUC()->size() == 0 &&
m_pKB->m_pTBox->unfold(EXPRNODE_TOP) == NULL &&
!pExpressivity->hasInverse() &&
!pExpressivity->hasNominal() &&
!pExpressivity->hasComplexSubRoles());
m_pSetClasses = new ExprNodeSet;
for(ExprNodeSet::iterator i = m_pKB->getClasses()->begin(); i != m_pKB->getClasses()->end(); i++ )
m_pSetClasses->insert((ExprNode*)*i);
m_mapUnionClasses.clear();
m_setCyclicConcepts.clear();
m_aMarkedNodes.clear();
m_mapToldDisjoints.clear();
m_pTaxonomy = new Taxonomy();
m_pToldTaxonomy = new Taxonomy(m_pSetClasses, FALSE);
END_DECOMMENT("TaxonomyBuilder::reset");
}
void TaxonomyBuilder::computeToldInformation()
{
START_DECOMMENT2("TaxonomyBuilder::computeToldInformation");
// compute told subsumers for each concept
for(Expr2SetOfExprNodeSets::iterator i = m_pKB->m_pTBox->m_mapTBoxAxioms.begin(); i != m_pKB->m_pTBox->m_mapTBoxAxioms.end(); i++ )
{
ExprNode* pAxiom = (ExprNode*)i->first;
ExprNode* pC1 = (ExprNode*)pAxiom->m_pArgs[0];
ExprNode* pC2 = (ExprNode*)pAxiom->m_pArgs[1];
bool bEquivalent = (pAxiom->m_iExpression==EXPR_EQCLASSES);
ExprNodeSet* pExplanation = m_pKB->m_pTBox->getAxiomExplanation(pAxiom);
bool bReverseArgs = (!isPrimitive(pC1) && isPrimitive(pC2));
if( bEquivalent && bReverseArgs )
addToldRelation(pC2, pC1, bEquivalent, pExplanation);
else
addToldRelation(pC1, pC2, bEquivalent, pExplanation);
}
// for( ATermAppl c : classes ) {
// ATermAppl desc = (ATermAppl) kb.getTBox().getUnfoldingMap().get( c );
//
// if( desc == null )
// continue;
//
// addToldRelation( c, desc, false );
// }
// additional step for union classes. for example, if we have
// C = or(A, B)
// and both A and B subclass of D then we can conclude C is also
// subclass of D
for(ExprNode2ExprNodeListMap::iterator i = m_mapUnionClasses.begin(); i != m_mapUnionClasses.end(); i++ )
{
ExprNode* pC = (ExprNode*)i->first;
ExprNodeList* pDisj = (ExprNodeList*)i->second;
ExprNodes lca;
m_pToldTaxonomy->computeLCA(pDisj, &lca);
for(ExprNodes::iterator j = lca.begin(); j != lca.end(); j++ )
{
ExprNode* pD = (ExprNode*)*j;
addToldSubsumer(pC, pD, NULL);
}
}
m_mapUnionClasses.clear();
m_pToldTaxonomy->assertValid();
END_DECOMMENT("TaxonomyBuilder::computeToldInformation");
}
void TaxonomyBuilder::createDefinitionOrder()
{
START_DECOMMENT2("TaxonomyBuilder::createDefinitionOrder");
Taxonomy* pDefinitionOrderTaxonomy = new Taxonomy(m_pSetClasses, FALSE);
for(ExprNodeSet::iterator i = m_pSetClasses->begin(); i != m_pSetClasses->end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
printExprNodeWComment("C=", pC);
Expr2ExprSetPairList* pDesc = m_pKB->m_pTBox->unfold(pC);
if( pDesc == NULL )
continue;
for(Expr2ExprSetPairList::iterator j = pDesc->begin(); j != pDesc->end(); j++ )
{
Expr2ExprSetPair* pPair = (Expr2ExprSetPair*)*j;
ExprNodes aList;
printExprNodeWComment("pDD=", pPair->first);
findPrimitives(pPair->first, &aList, TRUE, TRUE);
for(ExprNodes::iterator k = aList.begin(); k != aList.end(); k++ )
{
ExprNode* pD = (ExprNode*)*k;
printExprNodeWComment("pD=", pD);
}
for(ExprNodes::iterator k = aList.begin(); k != aList.end(); k++ )
{
ExprNode* pD = (ExprNode*)*k;
if( isEqual(pC, pD) == 0 )
continue;
TaxonomyNode* pCNode = pDefinitionOrderTaxonomy->getNode(pC);
TaxonomyNode* pDNode = pDefinitionOrderTaxonomy->getNode(pD);
printExprNodeWComment("pDNode=", pDNode->m_pName);
if( pCNode == NULL )
assertFALSE("InternalReasonerException: c + is not in the definition order");
else if( isEqualTaxonomyNode(pCNode, m_pToldTaxonomy->getTop()) == 0 )
pDefinitionOrderTaxonomy->merge(pCNode, pDNode);
else
{
pDNode->addSub(pCNode);
pDefinitionOrderTaxonomy->removeCycles(pCNode);
}
}
}
}
pDefinitionOrderTaxonomy->assertValid();
m_aOrderedClasses.clear();
pDefinitionOrderTaxonomy->topologicalSort(TRUE, &m_aOrderedClasses);
m_pSetClasses->clear();
START_DECOMMENT2("inner TaxonomyBuilder::createDefinitionOrder");
DECOMMENT("OrderedClasses:");
for(ExprNodes::iterator i = m_aOrderedClasses.begin(); i != m_aOrderedClasses.end(); i++)
{
printExprNodeWComment("Class=", ((ExprNode*)*i));
m_pSetClasses->insert((ExprNode*)*i);
}
END_DECOMMENT("TaxonomyBuilder::createDefinitionOrder");
m_setCyclicConcepts.clear();
for(ExprNode2TaxonomyNodeMap::iterator i = pDefinitionOrderTaxonomy->m_mNodes.begin(); i != pDefinitionOrderTaxonomy->m_mNodes.end(); i++)
{
TaxonomyNode* pNode = (TaxonomyNode*)i->second;
if( pNode->m_setEquivalents.size() > 1 )
m_setCyclicConcepts.insert(pNode->m_setEquivalents.begin(), pNode->m_setEquivalents.end());
}
END_DECOMMENT("TaxonomyBuilder::createDefinitionOrder");
}
void TaxonomyBuilder::computeConceptFlags()
{
if( !m_bUseCD )
return;
// Use RBox domain axioms to mark some concepts as complex
for(Expr2RoleMap::iterator i = m_pKB->m_pRBox->m_mRoles.begin(); i != m_pKB->m_pRBox->m_mRoles.end(); i++ )
{
ExprNode* pP = (ExprNode*)i->first;
ExprNodeSet setDomains;
m_pKB->getDomains(pP, &setDomains);
for(ExprNodeSet::iterator j = setDomains.begin(); j != setDomains.begin(); j++ )
m_mConceptFlags[(ExprNode*)*j] = FLAG_OTHER;
}
/*
* Iterate over the post-absorption unfolded class descriptions to set
* concept flags The iteration needs to be over classes to include
* orphans
*/
for(ExprNodes::iterator i = m_aOrderedClasses.begin(); i != m_aOrderedClasses.end(); i++ )
{
ExprNode* pC = (ExprNode*)*i;
ExprNode* pNotC = createExprNode(EXPR_NOT, pC);
Expr2ExprSetPairList* pDesc = m_pKB->m_pTBox->unfold(pC);
if( m_pKB->m_pTBox->unfold(pNotC) || m_setCyclicConcepts.find(pC) != m_setCyclicConcepts.end() )
{
m_mConceptFlags[pC] = FLAG_NONPRIMITIVE;
for(Expr2ExprSetPairList::iterator j = pDesc->begin(); j != pDesc->end(); j++ )
{
Expr2ExprSetPair* pPair = (Expr2ExprSetPair*)*j;
ExprNodes aList;
findPrimitives(pPair->first, &aList, TRUE, TRUE);
for(ExprNodes::iterator k = aList.begin(); k != aList.end(); k++ )
{
ExprNode* pD = (ExprNode*)*k;
ExprNode2IntMap::iterator iFind = m_mConceptFlags.find(pD);
if( iFind == m_mConceptFlags.end() )
m_mConceptFlags[pD] = FLAG_PRIMITIVE;
else if( iFind->second == FLAG_COMPLETELY_DEFINED )
m_mConceptFlags[pD] = FLAG_PRIMITIVE;
}
}
continue;
}
bool bFlagged = FALSE;
ExprNodeSet setSupers;
m_pToldTaxonomy->getFlattenedSubSupers(pC, TRUE, TRUE, &setSupers);
for(ExprNodeSet::iterator k = setSupers.begin(); k != setSupers.end(); k++ )
{
ExprNode* pSup = (ExprNode*)*k;
ExprNode2IntMap::iterator iFind = m_mConceptFlags.find(pSup);
int iSupFlag = iFind->second;
if( iSupFlag == FLAG_NONPRIMITIVE || iSupFlag == FLAG_NONPRIMITIVE_TA )
{
m_mConceptFlags[pC] = FLAG_NONPRIMITIVE_TA;
bFlagged = TRUE;
break;
}
}
if( bFlagged )
continue;
/*
* The concept may have appeared in the definition of a
* non-primitive or, it may already have an 'OTHER' flag.
*/
if( m_mConceptFlags.find(pC) != m_mConceptFlags.end() )
continue;
if( isCDDesc(pDesc) )
m_mConceptFlags[pC] = FLAG_COMPLETELY_DEFINED;
else
m_mConceptFlags[pC] = FLAG_PRIMITIVE;
}
}
bool TaxonomyBuilder::isCDDesc(Expr2ExprSetPairList* pDesc)
{
if( pDesc )
{
for(Expr2ExprSetPairList::iterator j = pDesc->begin(); j != pDesc->end(); j++ )
{
Expr2ExprSetPair* pPair = (Expr2ExprSetPair*)*j;
if( !isCDDesc(pPair->first) )
return FALSE;
}
}
return TRUE;
}
bool TaxonomyBuilder::isCDDesc(ExprNode* pDesc)
{
if( pDesc == NULL )
return TRUE;
if( isPrimitive(pDesc) )
return TRUE;
if( pDesc->m_iExpression == EXPR_ALL )
return TRUE;
if( pDesc->m_iExpression == EXPR_AND )
{
// CHECK HERE : TaxonomyBuilder.c
// Conjuction '&' not added in original code
bool bAllCDConj = TRUE;
for(int i = 0; i < ((ExprNodeList*)pDesc->m_pArgList)->m_iUsedSize; i++ )
bAllCDConj &= isCDDesc(((ExprNodeList*)pDesc->m_pArgList)->m_pExprNodes[i]);
return bAllCDConj;
}
if( pDesc->m_iExpression == EXPR_NOT )
{
if( isPrimitive((ExprNode*)pDesc->m_pArgs[0]) )
return TRUE;
}
return FALSE;
}
void TaxonomyBuilder::clearMarks()
{
for(TaxonomyNodes::iterator i = m_aMarkedNodes.begin(); i != m_aMarkedNodes.end(); i++ )
{
TaxonomyNode* pNode = (TaxonomyNode*)*i;
pNode->m_bMark = TaxonomyNode::NOT_MARKED;
}
m_aMarkedNodes.clear();
}
TaxonomyNode* TaxonomyBuilder::checkSatisfiability(ExprNode* pC)
{
START_DECOMMENT2("TaxonomyBuilder::checkSatisfiability");
printExprNodeWComment("pC=", pC);
bool bIsSatisfiable = m_pKB->m_pABox->isSatisfiable(pC, TRUE);
if( !bIsSatisfiable )
m_pTaxonomy->addEquivalentNode(pC, m_pTaxonomy->getBottom());
DECOMMENT1("bIsSatisfiable=%d\n", bIsSatisfiable);
if( PARAMS_USE_CACHING() )
{
ExprNode* pNotC = createExprNode(EXPR_NOT, pC);
bIsSatisfiable = m_pKB->m_pABox->isSatisfiable(pNotC, TRUE);
if( !bIsSatisfiable )
m_pTaxonomy->addEquivalentNode(pC, m_pTaxonomy->getTop());
}
END_DECOMMENT("TaxonomyBuilder::checkSatisfiability");
return m_pTaxonomy->getNode(pC);
}
bool TaxonomyBuilder::subCheckWithCache(TaxonomyNode* pNode, ExprNode* pC, bool bTopDown)
{
START_DECOMMENT2("TaxonomyBuilder::subCheckWithCache");
printExprNodeWComment("pNode=", pNode->m_pName);
printExprNodeWComment("pC=", pC);
int iCached = pNode->m_bMark;
if( iCached != TaxonomyNode::NOT_MARKED )
{
DECOMMENT1("Return bCalcDMark=%d\n", (iCached==TaxonomyNode::MARKED_TRUE));
END_DECOMMENT("TaxonomyBuilder::subCheckWithCache");
return (iCached==TaxonomyNode::MARKED_TRUE);
}
// Search ancestors for marks to propogate
int iSize = 0;
TaxonomyNodes::iterator iStart, iEnd;
if( !bTopDown )
{
iSize = pNode->m_aSubs.size();
iStart = pNode->m_aSubs.begin();
iEnd = pNode->m_aSubs.end();
}
else
{
iSize = pNode->m_aSupers.size();
iStart = pNode->m_aSupers.begin();
iEnd = pNode->m_aSupers.end();
}
if( iSize > 1 )
{
TaxonomyNode2TaxonomyNode mVisited, mToBeVisited;
mVisited[pNode] = NULL;
for(TaxonomyNodes::iterator i = iStart; i != iEnd; i++ )
{
TaxonomyNode* pN = (TaxonomyNode*)*i;
mToBeVisited[pN] = pNode;
}
while(mToBeVisited.size()>0)
{
TaxonomyNode* pRelative = (TaxonomyNode*)mToBeVisited.begin()->first;
TaxonomyNode* pReachedFrom = (TaxonomyNode*)mToBeVisited.find(pRelative)->second;
if( pRelative->m_bMark == TaxonomyNode::MARKED_FALSE )
{
TaxonomyNode* pN = pReachedFrom;
while(pN)
{
mark(pN, TaxonomyNode::MARKED_FALSE, NO_PROPAGATE);
TaxonomyNode2TaxonomyNode::iterator iFind = mVisited.find(pN);
if( iFind != mVisited.end() )
pN = (TaxonomyNode*)iFind->second;
else
pN = NULL;
}
DECOMMENT("Return bCalcDMark=0\n");
END_DECOMMENT("TaxonomyBuilder::subCheckWithCache");
return FALSE;
}
else if( pRelative->m_bMark == TaxonomyNode::NOT_MARKED )
{
if( !bTopDown )
{
iStart = pRelative->m_aSubs.begin();
iEnd = pRelative->m_aSubs.end();
}
else
{
iStart = pRelative->m_aSupers.begin();
iEnd = pRelative->m_aSupers.end();
}
for(TaxonomyNodes::iterator i = iStart; i != iEnd; i++ )
{
TaxonomyNode* pN = (TaxonomyNode*)*i;
if( mVisited.find(pN) == mVisited.end() && mToBeVisited.find(pN) == mToBeVisited.end() )
mToBeVisited[pN] = pRelative;
}
}
mToBeVisited.erase(pRelative);
mVisited[pRelative] = pReachedFrom;
}
}
bool bCalcDMark = bTopDown?subsumes(pNode->m_pName, pC):subsumes(pC, pNode->m_pName);
mark(pNode, bCalcDMark?1:0, NO_PROPAGATE);
DECOMMENT1("Return bCalcDMark=%d\n", bCalcDMark);
END_DECOMMENT("TaxonomyBuilder::subCheckWithCache");
return bCalcDMark;
}
bool TaxonomyBuilder::subsumes(TaxonomyNode* pNode, ExprNode* pC)
{
return subCheckWithCache(pNode, pC, TRUE);
}
bool TaxonomyBuilder::subsumes(ExprNode* pSup, ExprNode* pSub)
{
return m_pKB->m_pABox->isSubClassOf(pSub, pSup);
}
bool TaxonomyBuilder::subsumed(TaxonomyNode* pNode, ExprNode* pC)
{
return subCheckWithCache(pNode, pC, FALSE);
}
void TaxonomyBuilder::addToldRelation(ExprNode* pC, ExprNode* pD, bool bEquivalent, ExprNodeSet* pExplanation)
{
START_DECOMMENT2("TaxonomyBuilder::addToldRelation");
printExprNodeWComment("C=", pC);
printExprNodeWComment("D=", pD);
if( !bEquivalent && (isEqual(pC, EXPRNODE_BOTTOM) == 0 || isEqual(pD, EXPRNODE_TOP) == 0 ) )
{
END_DECOMMENT("TaxonomyBuilder::addToldRelation");
return;
}
if( !isPrimitive(pC) )
{
if( pC->m_iExpression == EXPR_OR )
{
for(int i = 0; i < ((ExprNodeList*)pC->m_pArgList)->m_iUsedSize; i++ )
{
ExprNode* pE = (ExprNode*)((ExprNodeList*)pC->m_pArgList)->m_pExprNodes[i];
addToldRelation(pE, pD, FALSE, pExplanation);