TCascade Class Reference

#include <cascdynetinf.h>

Public Member Functions
	TCascade ()
	TCascade (const int &model)
	TCascade (const int &cid, const int &model)
	TCascade (TSIn &SIn)
void	Save (TSOut &SOut) const
void	Clr ()
int	GetId ()
int	Len () const
int	LenBeforeT (const double &T)
int	LenAfterT (const double &T)
int	GetNode (const int &i) const
THash< TInt, THitInfo >::TIter	BegI () const
THash< TInt, THitInfo >::TIter	EndI () const
int	GetModel () const
double	GetTm (const int &NId) const
double	GetMaxTm () const
double	GetMinTm () const
void	Add (const int &NId, const double &HitTm)
void	Del (const int &NId)
bool	IsNode (const int &NId) const
void	Sort ()
bool	operator< (const TCascade &Cascade) const
	TCascade ()
	TCascade (const double &alpha)
	TCascade (const double &alpha, const int &model)
	TCascade (const double &alpha, const double &eps)
	TCascade (const double &alpha, const int &model, const double &eps)
	TCascade (TSIn &SIn)
void	Save (TSOut &SOut) const
void	Clr ()
int	Len () const
int	GetNode (const int &i) const
int	GetParent (const int NId) const
double	GetAlpha () const
double	GetTm (const int &NId) const
void	Add (const int &NId, const double &HitTm)
void	Del (const int &NId)
bool	IsNode (const int &NId) const
void	Sort ()
double	TransProb (const int &NId1, const int &NId2) const
double	GetProb (const PNGraph &G)
void	InitProb ()
double	UpdateProb (const int &N1, const int &N2, const bool &UpdateProb=false)

Public Attributes
TInt	CId
THash< TInt, THitInfo >	NIdHitH
TInt	Model
TFlt	CurProb
TFlt	Alpha
TFlt	Eps

Detailed Description

Definition at line 84 of file cascdynetinf.h.

Constructor & Destructor Documentation

TCascade::TCascade ( )

inline

Definition at line 90 of file cascdynetinf.h.

: CId(0), NIdHitH(), Model(0) { }

TCascade::TCascade ( const int &  model )

inline

Definition at line 91 of file cascdynetinf.h.

: NIdHitH() { Model = model; }

TCascade::TCascade ( const int &  cid, const int &  model  )

inline

Definition at line 92 of file cascdynetinf.h.

: NIdHitH() { CId = cid; Model = model; }

TCascade::TCascade ( TSIn &  SIn )

inline

Definition at line 93 of file cascdynetinf.h.

: CId(SIn), NIdHitH(SIn), Model(SIn) { }

TCascade::TCascade ( )

inline

Definition at line 26 of file cascnetinf.h.

: NIdHitH(), CurProb(0), Alpha(1.0), Eps(1e-64), Model(0) { }

TCascade::TCascade ( const double &  alpha )

inline

Definition at line 27 of file cascnetinf.h.

: NIdHitH(), CurProb(0), Alpha(alpha), Eps(1e-64), Model(0) { }

TCascade::TCascade ( const double &  alpha, const int &  model  )

inline

Definition at line 28 of file cascnetinf.h.

: NIdHitH(), CurProb(0), Alpha(alpha), Eps(1e-64), Model(model) { }

TCascade::TCascade ( const double &  alpha, const double &  eps  )

inline

Definition at line 29 of file cascnetinf.h.

: NIdHitH(), CurProb(0), Alpha(alpha), Eps(eps), Model(0) { }

TCascade::TCascade ( const double &  alpha, const int &  model, const double &  eps  )

inline

Definition at line 30 of file cascnetinf.h.

: NIdHitH(), CurProb(0), Alpha(alpha), Eps(eps), Model(model) { }

TCascade::TCascade ( TSIn &  SIn )

inline

Definition at line 31 of file cascnetinf.h.

: NIdHitH(SIn), CurProb(SIn), Alpha(SIn) { }

Member Function Documentation

void TCascade::Add ( const int &  NId, const double &  HitTm  )

inline

Definition at line 39 of file cascnetinf.h.

{ NIdHitH.AddDat(NId, THitInfo(NId, HitTm)); }

void TCascade::Add ( const int &  NId, const double &  HitTm  )

inline

Definition at line 107 of file cascdynetinf.h.

{ NIdHitH.AddDat(NId, THitInfo(NId, HitTm)); }

THash<TInt, THitInfo>::TIter TCascade::BegI ( ) const

inline

Definition at line 101 of file cascdynetinf.h.

{ return NIdHitH.BegI(); }

void TCascade::Clr ( )

inline

Definition at line 33 of file cascnetinf.h.

{ NIdHitH.Clr(); CurProb = 0; Alpha = 1.0; }

void TCascade::Clr ( )

inline

Definition at line 95 of file cascdynetinf.h.

{ NIdHitH.Clr(); }

void TCascade::Del ( const int &  NId )

inline

Definition at line 40 of file cascnetinf.h.

{ NIdHitH.DelKey(NId); }

void TCascade::Del ( const int &  NId )

inline

Definition at line 108 of file cascdynetinf.h.

{ NIdHitH.DelKey(NId); }

THash<TInt, THitInfo>::TIter TCascade::EndI ( ) const

inline

Definition at line 102 of file cascdynetinf.h.

{ return NIdHitH.EndI(); }

double TCascade::GetAlpha ( ) const

inline

Definition at line 37 of file cascnetinf.h.

{ return Alpha; }

int TCascade::GetId ( )

inline

Definition at line 96 of file cascdynetinf.h.

{ return CId; }

double TCascade::GetMaxTm ( ) const

inline

Definition at line 105 of file cascdynetinf.h.

{ return NIdHitH[NIdHitH.Len()-1].Tm; } // we assume the cascade is sorted

double TCascade::GetMinTm ( ) const

inline

Definition at line 106 of file cascdynetinf.h.

{ return NIdHitH[0].Tm; } // we assume the cascade is sorted

int TCascade::GetModel ( ) const

inline

Definition at line 103 of file cascdynetinf.h.

{ return Model; }

int TCascade::GetNode ( const int &  i ) const

inline

Definition at line 35 of file cascnetinf.h.

{ return NIdHitH.GetKey(i); }

int TCascade::GetNode ( const int &  i ) const

inline

Definition at line 100 of file cascdynetinf.h.

{ return NIdHitH.GetKey(i); }

int TCascade::GetParent ( const int  NId ) const

inline

Definition at line 36 of file cascnetinf.h.

{ return NIdHitH.GetDat(NId).Parent; }

double TCascade::GetProb

(

const PNGraph &

G

)

Definition at line 17 of file cascnetinf.cpp.

                                         {
    double P = 0;
    for (int n = 0; n < Len(); n++) {
      const int DstNId = GetNode(n);
      const double DstTm = GetTm(DstNId);
      TNGraph::TNodeI NI = G->GetNI(DstNId);
      double MxProb = log(Eps);
      int BestParent = -1;
      for (int e = 0; e < NI.GetInDeg(); e++) {
        const int SrcNId = NI.GetInNId(e);
        if (IsNode(SrcNId) && GetTm(SrcNId) < DstTm) {
          const double Prob = log(TransProb(SrcNId, DstNId));
          if (MxProb < Prob) { MxProb = Prob;  BestParent = SrcNId; }
        }
      }
      NIdHitH.GetDat(DstNId).Parent = BestParent;
      P += MxProb;
    }

    return P;
}

double TCascade::GetTm ( const int &  NId ) const

inline

Definition at line 38 of file cascnetinf.h.

{ return NIdHitH.GetDat(NId).Tm; }

double TCascade::GetTm ( const int &  NId ) const

inline

Definition at line 104 of file cascdynetinf.h.

{ return NIdHitH.GetDat(NId).Tm; }

void TCascade::InitProb

(

)

Definition at line 40 of file cascnetinf.cpp.

                        {
    CurProb = log(Eps) * Len();
    for (int i = 0; i < Len(); i++) {
      NIdHitH[i].Parent = -1; }
}

bool TCascade::IsNode ( const int &  NId ) const

inline

Definition at line 41 of file cascnetinf.h.

{ return NIdHitH.IsKey(NId); }

bool TCascade::IsNode ( const int &  NId ) const

inline

Definition at line 109 of file cascdynetinf.h.

{ return NIdHitH.IsKey(NId); }

int TCascade::Len ( ) const

inline

Definition at line 34 of file cascnetinf.h.

{ return NIdHitH.Len(); }

int TCascade::Len ( ) const

inline

Definition at line 97 of file cascdynetinf.h.

{ return NIdHitH.Len(); }

int TCascade::LenAfterT ( const double &  T )

inline

Definition at line 99 of file cascdynetinf.h.

{ int len = 0; while (len < NIdHitH.Len() && NIdHitH[NIdHitH.Len()-1-len].Tm >= T) { len++; } return len; }

int TCascade::LenBeforeT ( const double &  T )

inline

Definition at line 98 of file cascdynetinf.h.

{ int len = 0; while (len < NIdHitH.Len() && NIdHitH[len].Tm <= T) { len++; } return len; }

bool TCascade::operator< ( const TCascade &  Cascade ) const

inline

Definition at line 111 of file cascdynetinf.h.

                                                  {
      return Len() < Cascade.Len(); }

void TCascade::Save ( TSOut &  SOut ) const

inline

Definition at line 32 of file cascnetinf.h.

{ NIdHitH.Save(SOut); CurProb.Save(SOut); Alpha.Save(SOut); }

void TCascade::Save ( TSOut &  SOut ) const

inline

Definition at line 94 of file cascdynetinf.h.

{ CId.Save(SOut); NIdHitH.Save(SOut); Model.Save(SOut); }

void TCascade::Sort ( )

inline

Definition at line 42 of file cascnetinf.h.

{ NIdHitH.SortByDat(true); }

void TCascade::Sort ( )

inline

Definition at line 110 of file cascdynetinf.h.

{ NIdHitH.SortByDat(true); }

double TCascade::TransProb	(	const int &	NId1,
		const int &	NId2
	)		const

Definition at line 4 of file cascnetinf.cpp.

                                                                 {
  if (!IsNode(NId1) || !IsNode(NId2)) { return Eps.Val; }
  if (GetTm(NId1) >= GetTm(NId2)) { return Eps.Val; }
  if (Model==0)
    return Alpha*exp(-Alpha*(GetTm(NId2)-GetTm(NId1))); // exponential
  else if (Model==1)
    return (Alpha-1)*pow((GetTm(NId2)-GetTm(NId1)), -Alpha); // power-law
  else
    return Alpha*(GetTm(NId2)-GetTm(NId1))*exp(-0.5*Alpha*pow(GetTm(NId2)-GetTm(NId1), 2)); // rayleigh

  return (-1);
}

double TCascade::UpdateProb	(	const int &	N1,
		const int &	N2,
		const bool &	UpdateProb = false
	)

Definition at line 47 of file cascnetinf.cpp.

                                                                                {
    if (!IsNode(N1) || !IsNode(N2)) { return CurProb; }
    if (GetTm(N1) >= GetTm(N2)) { return CurProb; }
    const double P1 = log(TransProb(GetParent(N2), N2));
    const double P2 = log(TransProb(N1, N2)); // N1 influences N2
    if (P1 < P2) {
      if (UpdateProb) { // the edge is there, update the CurProb and best Parent
        CurProb = CurProb - P1 + P2;
        NIdHitH.GetDat(N2).Parent = N1;
      } else {
        return CurProb - P1 + P2; }
    }
    return CurProb;
}

Member Data Documentation

TFlt TCascade::Alpha

Definition at line 23 of file cascnetinf.h.

TInt TCascade::CId

Definition at line 86 of file cascdynetinf.h.

TFlt TCascade::CurProb

Definition at line 23 of file cascnetinf.h.

TFlt TCascade::Eps

Definition at line 23 of file cascnetinf.h.

TInt TCascade::Model

Definition at line 88 of file cascdynetinf.h.

THash< TInt, THitInfo > TCascade::NIdHitH

Definition at line 87 of file cascdynetinf.h.

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The documentation for this class was generated from the following files:

• snap-adv/cascdynetinf.h
• snap-adv/cascnetinf.h
• snap-adv/cascnetinf.cpp