the base class of all the solve classes, and provide a gradient descent algorithm. More...
#include <wb-solve.h>
Public Member Functions | |
| Solve (Func *pfunc=NULL, double dtol=1e-5) | |
| virtual bool | Run (const double *pInitParams=NULL) |
| Run iteration. input the init-parameters. More... | |
| virtual void | IterInit () |
| initial the iteration, for derivation. More... | |
| virtual void | ComputeDir (int k, const double *pdParam, const double *pdGradient, double *pdDir) |
| Calculate the update direction p_k. More... | |
| virtual double | LineSearch (double *pdDir, double dValue, const double *pdParam, const double *pdGradient) |
| linear search. More... | |
| virtual void | Update (double *pdParam, const double *pdDir, double dStep) |
| Update. More... | |
| virtual bool | StopDecision (int k, double dValue, const double *pdGradient) |
| Stop decision. More... | |
Static Public Member Functions | |
| static double | VecProduct (const double *pdVec1, const double *pdVec2, int nSize) |
| calculate the dot of two vectors More... | |
| static double | VecNorm (const double *pdVec, int nSize) |
| calculate the norm of a vector More... | |
| static double | VecDist (const double *pdVec1, const double *pdVec2, int nSize) |
| calculate the distance of two vectors More... | |
Public Attributes | |
| Func * | m_pfunc |
| pointer to the function More... | |
| double * | m_pdRoot |
| save the root of the function More... | |
| int | m_nIterNum |
| current iteration number, iter form m_nIterMin to m_nIterMax More... | |
| int | m_nIterMin |
| minium iteration number More... | |
| int | m_nIterMax |
| maximum iteration number More... | |
| double | m_dSpendMinute |
| record the iteration spend time��minute�� More... | |
| double | m_dStop |
| stop threshold More... | |
| double | m_dGain |
| itera step. ==0 means using the line search . More... | |
Protected Attributes | |
| const char * | m_pAlgorithmName |
| the algorithm name. More... | |
Detailed Description
the base class of all the solve classes, and provide a gradient descent algorithm.
- Date
- 2016-03-04
Definition at line 77 of file wb-solve.h.
Constructor & Destructor Documentation
§ Solve()
|
inline |
Definition at line 96 of file wb-solve.h.
Member Function Documentation
§ ComputeDir()
|
virtual |
Calculate the update direction p_k.
- Parameters
-
[in] k iteration number, from 1 to ... [in] pdParam parameter x_k [in] pdGradient the gradient at x_k [out] pdDir return the direction
Reimplemented in wb::LBFGS.
Definition at line 137 of file wb-solve.cpp.
§ IterInit()
|
inlinevirtual |
initial the iteration, for derivation.
Reimplemented in wb::LBFGS.
Definition at line 114 of file wb-solve.h.
§ LineSearch()
|
virtual |
linear search.
- Parameters
-
[in] pdDir update direction p_k [in] dValue the function value at x_k [in] pdGradient the gradient at x_k [in] pdCurParam parameter x_k
- Returns
- the learning step.
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Definition at line 143 of file wb-solve.cpp.
§ Run()
|
virtual |
Run iteration. input the init-parameters.
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init
Reimplemented in hrf::SAtrain, and trf::SAtrain.
Definition at line 22 of file wb-solve.cpp.
§ StopDecision()
|
virtual |
Stop decision.
Definition at line 210 of file wb-solve.cpp.
§ Update()
|
virtual |
Update.
Reimplemented in hrf::SAtrain, and trf::SAtrain.
Definition at line 204 of file wb-solve.cpp.
§ VecDist()
|
static |
calculate the distance of two vectors
Definition at line 231 of file wb-solve.cpp.
§ VecNorm()
|
static |
calculate the norm of a vector
Definition at line 227 of file wb-solve.cpp.
§ VecProduct()
|
static |
calculate the dot of two vectors
Definition at line 220 of file wb-solve.cpp.
Member Data Documentation
§ m_dGain
| double wb::Solve::m_dGain |
itera step. ==0 means using the line search .
Definition at line 93 of file wb-solve.h.
§ m_dSpendMinute
| double wb::Solve::m_dSpendMinute |
record the iteration spend time��minute��
Definition at line 90 of file wb-solve.h.
§ m_dStop
| double wb::Solve::m_dStop |
stop threshold
Definition at line 92 of file wb-solve.h.
§ m_nIterMax
| int wb::Solve::m_nIterMax |
maximum iteration number
Definition at line 88 of file wb-solve.h.
§ m_nIterMin
| int wb::Solve::m_nIterMin |
minium iteration number
Definition at line 87 of file wb-solve.h.
§ m_nIterNum
| int wb::Solve::m_nIterNum |
current iteration number, iter form m_nIterMin to m_nIterMax
Definition at line 86 of file wb-solve.h.
§ m_pAlgorithmName
|
protected |
the algorithm name.
Definition at line 80 of file wb-solve.h.
§ m_pdRoot
| double* wb::Solve::m_pdRoot |
save the root of the function
Definition at line 84 of file wb-solve.h.
§ m_pfunc
| Func* wb::Solve::m_pfunc |
pointer to the function
Definition at line 82 of file wb-solve.h.
The documentation for this class was generated from the following files:
- C:/Users/zhang/spmi/SPMILM/tools/trf/src/base/wb-solve.h
- C:/Users/zhang/spmi/SPMILM/tools/trf/src/base/wb-solve.cpp
