C++ TIntH::SortByDat方法代码示例

// set Language and Country for movies that do not have the value set
// for every movie find the mojority language/country in 1-hop neighborhood and set it
void TImdbNet::SetLangCntryByMajority() {
  // set language
  while (true) {
    TIntPrV NIdToVal;
    for (TNodeI NI = BegNI(); NI < EndNI(); NI++) {
      if (NI().GetLang() != 0) { continue; }
      int Nbhs=0; TIntH LangCntH;
      for (int e = 0; e < NI.GetOutDeg(); e++) {
        LangCntH.AddDat(NI.GetOutNDat(e).GetLang()) += 1;  Nbhs++; }
      for (int e = 0; e < NI.GetInDeg(); e++) {
        LangCntH.AddDat(NI.GetInNDat(e).GetLang()) += 1;  Nbhs++; }
      if (LangCntH.IsKey(0)) { Nbhs-=LangCntH.GetDat(0); LangCntH.GetDat(0)=0; }
      LangCntH.SortByDat(false);
      if (LangCntH.GetKey(0) == 0) { continue; }
      if (LangCntH[0]*2 >= Nbhs) { 
        NIdToVal.Add(TIntPr(NI.GetId(), LangCntH.GetKey(0))); }
    }
    if (NIdToVal.Empty()) { break; } // done
    for (int i = 0; i < NIdToVal.Len(); i++) {
      GetNDat(NIdToVal[i].Val1).Lang = NIdToVal[i].Val2; }
    printf("  language set: %d\n", NIdToVal.Len());
  }
  int cnt=0;
  for (TNodeI NI = BegNI(); NI < EndNI(); NI++) { if (NI().GetLang()==0) cnt++; }
  printf(" NO language: %d\n\n", cnt);
  // set country
  while (true) {
    TIntPrV NIdToVal;
    for (TNodeI NI = BegNI(); NI < EndNI(); NI++) {
      if (NI().GetCntry() != 0) { continue; }
      int Nbhs=0; TIntH CntryCntH;
      for (int e = 0; e < NI.GetOutDeg(); e++) {
        CntryCntH.AddDat(NI.GetOutNDat(e).GetCntry()) += 1;  Nbhs++; }
      for (int e = 0; e < NI.GetInDeg(); e++) {
        CntryCntH.AddDat(NI.GetInNDat(e).GetCntry()) += 1;  Nbhs++; }
      if (CntryCntH.IsKey(0)) { Nbhs-=CntryCntH.GetDat(0); CntryCntH.GetDat(0)=0; }
      CntryCntH.SortByDat(false);
      if (CntryCntH.GetKey(0) == 0) { continue; }
      if (CntryCntH[0]*2 >= Nbhs) { 
        NIdToVal.Add(TIntPr(NI.GetId(), CntryCntH.GetKey(0))); }
    }
    if (NIdToVal.Empty()) { break; } // done
    for (int i = 0; i < NIdToVal.Len(); i++) {
      GetNDat(NIdToVal[i].Val1).Cntry = NIdToVal[i].Val2; }
    printf("  country set: %d\n", NIdToVal.Len());
  }
  cnt=0;
  for (TNodeI NI = BegNI(); NI < EndNI(); NI++) { if (NI().GetCntry()==0) cnt++; }
  printf(" NO country: %d\n\n", cnt);
}

// set actor's language and country
void TImdbNet::SetActorCntryLangByMajority() {
    // set language
  TIntPrV NIdToVal;
  for (TNodeI NI = BegNI(); NI < EndNI(); NI++) {
    if (! NI().IsActor()) { continue; }
    IAssert(NI().GetLang() == 0); // no language set
    IAssert(NI.GetInDeg() == 0);  // actors point to movies
    int Nbhs=0;  TIntH LangCntH;
    for (int e = 0; e < NI.GetOutDeg(); e++) {
      LangCntH.AddDat(NI.GetOutNDat(e).GetLang()) += 1;  Nbhs++; }
    if (LangCntH.IsKey(0)) { Nbhs-=LangCntH.GetDat(0); LangCntH.GetDat(0)=0; }
    LangCntH.SortByDat(false);
    if (LangCntH.GetKey(0) == 0) { continue; }
    if (LangCntH[0]*2 >= Nbhs) { 
      NIdToVal.Add(TIntPr(NI.GetId(), LangCntH.GetKey(0))); }
  }
  for (int i = 0; i < NIdToVal.Len(); i++) {
    GetNDat(NIdToVal[i].Val1).Lang = NIdToVal[i].Val2; }
  printf("  language set: %d\n", NIdToVal.Len());
  
  int cnt=0;
  for (TNodeI NI = BegNI(); NI < EndNI(); NI++) { if (NI().IsActor() && NI().GetLang()==0) cnt++; }
  printf("  Actors NO language: %d\n\n", cnt);
  // set country
  NIdToVal.Clr(true);
  for (TNodeI NI = BegNI(); NI < EndNI(); NI++) {
    if (! NI().IsActor()) { continue; }
    IAssert(NI().GetCntry() == 0); // no country set
    IAssert(NI.GetInDeg() == 0);   // actors point to movies
    int Nbhs=0; TIntH CntryCntH;
    for (int e = 0; e < NI.GetOutDeg(); e++) {
      CntryCntH.AddDat(NI.GetOutNDat(e).GetCntry()) += 1;  Nbhs++; }
    if (CntryCntH.IsKey(0)) { Nbhs-=CntryCntH.GetDat(0); CntryCntH.GetDat(0)=0; }
    CntryCntH.SortByDat(false);
    if (CntryCntH.GetKey(0) == 0) { continue; }
    if (CntryCntH[0]*2 >= Nbhs) { 
      NIdToVal.Add(TIntPr(NI.GetId(), CntryCntH.GetKey(0))); }
  }
  for (int i = 0; i < NIdToVal.Len(); i++) {
    GetNDat(NIdToVal[i].Val1).Cntry = NIdToVal[i].Val2; }
  printf("  country set: %d\n", NIdToVal.Len());
  cnt=0;
  for (TNodeI NI = BegNI(); NI < EndNI(); NI++) { if (NI().IsActor() && NI().GetCntry()==0) cnt++; }
  printf("  Actors NO country: %d\n\n", cnt);
}

// Maximum Domination Problem
void MaxCPGreedyBetter(const PUNGraph& Graph, const int k, TIntH& GroupNodes) {
  // buildup cpntainer of group nodes
  const int n = Graph->GetNodes();
  int *NNodes = new int[n]; // container of neighbouring nodes
  int NNodes_br = 0;
  TIntH Nodes; // nodes sorted by vd
  double gc = 0, gc0 = 0;
  int addId = 0, addIdPrev = 0;

  for (TUNGraph::TNodeI NI = Graph->BegNI(); NI < Graph->EndNI(); NI++){
    Nodes.AddDat(NI.GetId(), NI.GetDeg());
  }

  Nodes.SortByDat(false);

  int br = 0;
  while (br < k) {
    for (THashKeyDatI<TInt, TInt> NI = Nodes.BegI(); NI < Nodes.EndI(); NI++){
      if ((NI.GetDat() <= (int)gc0))
        break;
      gc = NI.GetDat() - Intersect(Graph->GetNI(NI.GetKey()), NNodes, NNodes_br);
      if (gc>gc0){
        gc0 = gc;
        addId = NI.GetKey();
      }
    }

    if (addId != addIdPrev) {

      GroupNodes.AddDat(br, addId);
      br++;
      gc0 = 0;

      int nn = addId;
      bool nnnew = true;
      for (int j = 0; j<NNodes_br; j++)
        if (NNodes[j] == nn){
        nnnew = false;
        j = NNodes_br;
        }

      if (nnnew){
        NNodes[NNodes_br] = nn;
        NNodes_br++;
      }

      for (int i = 0; i<Graph->GetNI(addId).GetDeg(); i++) {
        int nn = Graph->GetNI(addId).GetNbrNId(i);
        bool nnnew = true;
        for (int j = 0; j<NNodes_br; j++) {
          if (NNodes[j] == nn){
            nnnew = false;
            j = NNodes_br;
          }
        }
        if (nnnew){
          NNodes[NNodes_br] = nn;
          NNodes_br++;
        }
      }
      addIdPrev = addId;
      Nodes.DelKey(addId);
    }
    else {
      br = k;
    }
    printf("%i,", br);
  }

  delete NNodes;
}

void TVizMapContext::PaintCatNms(PGks Gks, const int& KeyWdFontSize, 
        TVec<TFltRect>& PointNmRectV) {
        
    // calculate frequency of categories
    TIntH CatH; TIntFltPrH CatPosH;
    PBowDocBs BowDocBs = VizMapFrame->GetKeyWdBow();
    const int Points = VizMapFrame->GetPoints();
    for (int PointN = 0; PointN < Points; PointN++) {
        PVizMapPoint Point = VizMapFrame->GetPoint(PointN);
        const int DId = Point->GetDocId();
        const int CIds = BowDocBs->GetDocCIds(DId);
        for (int CIdN = 0; CIdN < CIds; CIdN++) {
            const int CId = BowDocBs->GetDocCId(DId, CIdN);
            CatH.AddDat(CId)++;
            CatPosH.AddDat(CId).Val1 += Point->GetPointX();
            CatPosH.AddDat(CId).Val2 += Point->GetPointY();
        }
        
    }
    CatH.SortByDat(false); 

    // draw the top cats
    const int TopCats = Points > 100 ? 6 : 4; 
    TFltRect ZoomRect = GetZoomRect();    
    Gks->SetFont(TGksFont::New("ARIAL", KeyWdFontSize + 3, ColorCatNmFont));
    TVec<TFltRect> CatNmRectV; TVec<TFltV> CatNmPosV;
    const int MnSize = TInt::GetMn(Gks->GetWidth(), Gks->GetHeight());
    const int MnDist = TFlt::Round(0.3 * double(MnSize));
    int Cats = 0, CatKeyId = CatH.FFirstKeyId();
    while (CatH.FNextKeyId(CatKeyId)) {
        if (Cats == TopCats) { break; } 
        if (double(CatH[CatKeyId]) / double(Points) < 0.05) { break; } 
        const int CId = CatH.GetKey(CatKeyId);
        // get name
        TStr CatNm = BowDocBs->GetCatNm(CId);
        if (CatFullNmH.IsKey(CatNm)) {
            CatNm = CatFullNmH.GetDat(CatNm);
        } else { continue; }
        // get position
        TFltPr CatPos = CatPosH.GetDat(CId);
        const int CatCount = CatH.GetDat(CId); IAssert(CatCount > 0);
        const double CatX = CatPos.Val1 / double(CatCount);
        const double CatY = CatPos.Val2 / double(CatCount);
        // is it within the zoom?
        if (!ZoomRect.IsXYIn(CatX, CatY)) { continue; }
        // calculate string size on the screen
        const int HalfTxtWidth = Gks->GetTxtWidth(CatNm) / 2;
        const int HalfTxtHeight = Gks->GetTxtHeight(CatNm) / 2;
        // get coordinates in pixels
        const int X = GetScreenCoord(CatX , ZoomRect.GetMnX(), 
            ZoomRect.GetXLen(), Gks->GetWidth());
        const int Y = GetScreenCoord(CatY, ZoomRect.GetMnY(), 
            ZoomRect.GetYLen(), Gks->GetHeight());
        // is it to close to any of the most prominent categories
        int CatNmDist = MnSize; TFltV CatNmPos = TFltV::GetV(double(X), double(Y));
        for (int CatNmPosN = 0; CatNmPosN < CatNmPosV.Len(); CatNmPosN++) {
            const double Dist = TLinAlg::EuclDist(CatNmPosV[CatNmPosN], CatNmPos);
            CatNmDist = TInt::GetMn(TFlt::Round(Dist), CatNmDist);
        }
        if (CatNmDist < MnDist) { continue; }
        // does it overlap with any of hte most prominent categories
        TFltRect CatNmRect(X - HalfTxtWidth, Y - HalfTxtHeight,
            X + HalfTxtWidth, Y + HalfTxtHeight);
        bool DoDraw = true; const int Rects = CatNmRectV.Len();
        for (int RectN = 0; (RectN < Rects) && DoDraw; RectN++) {
            DoDraw = !TFltRect::Intersection(CatNmRect, CatNmRectV[RectN]); }
        if (!DoDraw) { continue; }
        // draw it!
        Gks->PutTxt(CatNm, X - HalfTxtWidth, Y - HalfTxtHeight); 
        // remember string area
        CatNmRectV.Add(CatNmRect); Cats++;
        // remember string position
        CatNmPosV.Add(CatNmPos);
    }
    PointNmRectV.AddV(CatNmRectV);
}