structuralConstraintIndegree_inl.h

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 *       - Pierre-Henri WUILLEMIN(_at_LIP6)                                 *
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#pragma once
 

 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
namespace gum {
 
  namespace learning {

    INLINE void StructuralConstraintIndegree::setGraphAlone(const DiGraph& graph) {
      // check that the max_indegree corresponds to the graph
      for (const auto id: graph) {
        if (!_Indegree_max_parents_.exists(id)) {
          _Indegree_max_parents_.insert(id, _Indegree_max_indegree_);
        }
      }
    }

    INLINE bool StructuralConstraintIndegree::checkArcAdditionAlone(NodeId x, NodeId y) const {
      return (_Indegree_max_parents_[y] > _DiGraph_graph_.parents(y).size());
    }

    INLINE bool StructuralConstraintIndegree::checkArcDeletionAlone(NodeId x, NodeId y) const {
      return true;
    }

    INLINE bool StructuralConstraintIndegree::checkArcReversalAlone(NodeId x, NodeId y) const {
      return (_Indegree_max_parents_[x] > _DiGraph_graph_.parents(x).size());
    }

    INLINE bool
        StructuralConstraintIndegree::checkModificationAlone(const ArcAddition& change) const {
      return checkArcAdditionAlone(change.node1(), change.node2());
    }

    INLINE bool
        StructuralConstraintIndegree::checkModificationAlone(const ArcDeletion& change) const {
      return checkArcDeletionAlone(change.node1(), change.node2());
    }

    INLINE bool
        StructuralConstraintIndegree::checkModificationAlone(const ArcReversal& change) const {
      return checkArcReversalAlone(change.node1(), change.node2());
    }

    INLINE bool
        StructuralConstraintIndegree::checkModificationAlone(const GraphChange& change) const {
      switch (change.type()) {
        case GraphChangeType::ARC_ADDITION :
          return checkArcAdditionAlone(change.node1(), change.node2());
 
        case GraphChangeType::ARC_DELETION :
          return checkArcDeletionAlone(change.node1(), change.node2());
 
        case GraphChangeType::ARC_REVERSAL :
          return checkArcReversalAlone(change.node1(), change.node2());
 
        default :
          GUM_ERROR(OperationNotAllowed,
                    "edge modifications are not "
                    "supported by StructuralConstraintIndegree");
      }
    }

    INLINE void StructuralConstraintIndegree::modifyGraphAlone(const ArcAddition& change) {}

    INLINE void StructuralConstraintIndegree::modifyGraphAlone(const ArcDeletion& change) {}

    INLINE void StructuralConstraintIndegree::modifyGraphAlone(const ArcReversal& change) {}

    INLINE void StructuralConstraintIndegree::modifyGraphAlone(const GraphChange& change) {}

    INLINE bool
        StructuralConstraintIndegree::isAlwaysInvalidAlone(const GraphChange& change) const {
      if ((change.type() == GraphChangeType::ARC_ADDITION)
          && (_Indegree_max_parents_[change.node2()] == 0)) {
        return true;
      } else if ((change.type() == GraphChangeType::ARC_REVERSAL)
                 && (_Indegree_max_parents_[change.node1()] == 0)) {
        return true;
      } else {
        return false;
      }
    }

    INLINE void
        StructuralConstraintIndegree::setIndegree(const NodeProperty< Size >& max_indegree) {
      for (const auto& degree: max_indegree) {
        _Indegree_max_parents_.set(degree.first, degree.second);
      }
    }

    INLINE void StructuralConstraintIndegree::setMaxIndegree(Size max_indegree, bool update_all) {
      if (update_all) {
        for (auto& degree: _Indegree_max_parents_) {
          degree.second = max_indegree;
        }
      }
 
      _Indegree_max_indegree_ = max_indegree;
    }
 
// include all the methods applicable to the whole class hierarchy
#  define GUM_CONSTRAINT_CLASS_NAME StructuralConstraintIndegree
#  include <agrum/BN/learning/constraints/structuralConstraintPatternInline.h>
#  undef GUM_CONSTRAINT_CLASS_NAME
 
  } /* namespace learning */
 
} /* namespace gum */
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */