MPQC 2.3.1
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This performs line searches with cubic steps. More...
#include <mcsearch.h>
Public Member Functions | |
MCSearch (const Ref< KeyVal > &) | |
The MCSearch KeyVal CTOR does not read any input. | |
int | update () |
Take a step. | |
void | init (RefSCVector &direction) |
Initializes the line search object. | |
void | init (RefSCVector &direction, Ref< Function > function) |
Initializes the line search object. | |
Public Member Functions inherited from sc::LineOpt | |
LineOpt (StateIn &) | |
LineOpt (const Ref< KeyVal > &) | |
void | save_data_state (StateOut &) |
Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. | |
void | apply_transform (const Ref< NonlinearTransform > &) |
Applies a nonlinear transform. | |
double | decrease_factor () |
Returns factor for sufficient decrease test. | |
double | set_decrease_factor (double factor) |
Sets factor for sufficient decrease test. | |
Public Member Functions inherited from sc::Optimize | |
Optimize (StateIn &) | |
Restore the state of a Function object. | |
Optimize (const Ref< KeyVal > &) | |
The KeyVal constructor reads the following information: | |
void | save_data_state (StateOut &) |
Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. | |
virtual int | optimize () |
Do the optimization. | |
void | set_checkpoint () |
Set up for checkpointing. | |
void | set_checkpoint_file (const char *) |
void | set_function (const Ref< Function > &) |
Set the function to be optimized. | |
void | set_max_iterations (int) |
Set the iteration limit. | |
virtual void | init () |
Initialize the optimizer. | |
Ref< Function > | function () const |
Returns information about the Function being optimized. | |
Ref< SCMatrixKit > | matrixkit () const |
RefSCDimension | dimension () const |
Public Member Functions inherited from sc::SavableState | |
SavableState & | operator= (const SavableState &) |
void | save_state (StateOut &) |
Save the state of the object as specified by the StateOut object. | |
void | save_object_state (StateOut &) |
This can be used for saving state when the exact type of the object is known for both the save and the restore. | |
virtual void | save_vbase_state (StateOut &) |
Save the virtual bases for the object. | |
Public Member Functions inherited from sc::DescribedClass | |
DescribedClass (const DescribedClass &) | |
DescribedClass & | operator= (const DescribedClass &) |
ClassDesc * | class_desc () const throw () |
This returns the unique pointer to the ClassDesc corresponding to the given type_info object. | |
const char * | class_name () const |
Return the name of the object's exact type. | |
int | class_version () const |
Return the version of the class. | |
virtual void | print (std::ostream &=ExEnv::out0()) const |
Print the object. | |
Public Member Functions inherited from sc::RefCount | |
int | lock_ptr () const |
Lock this object. | |
int | unlock_ptr () const |
Unlock this object. | |
void | use_locks (bool inVal) |
start and stop using locks on this object | |
refcount_t | nreference () const |
Return the reference count. | |
refcount_t | reference () |
Increment the reference count and return the new count. | |
refcount_t | dereference () |
Decrement the reference count and return the new count. | |
int | managed () const |
void | unmanage () |
Turn off the reference counting mechanism for this object. | |
int | managed () const |
Return 1 if the object is managed. Otherwise return 0. | |
Public Member Functions inherited from sc::Identity | |
Identifier | identifier () |
Return the Identifier for this argument. |
Protected Member Functions | |
void | mcstep (double *stx, double *fx, double *dx, double *sty, double *fy, double *dy, double *stp, double *fp, double *dp, bool *brackt, double *stpmin, double *stpmax, int *info) |
void | mcsrch (int *n, double *x, double *f, double *g, double *s, double *stp, double *ftol, double *xtol, int *maxfev, int *info, int *nfev, double *wa) |
void | mcinit () |
Protected Member Functions inherited from sc::LineOpt | |
int | sufficient_decrease (RefSCVector &step) |
Protected Member Functions inherited from sc::SavableState | |
SavableState (const SavableState &) | |
SavableState (StateIn &) | |
Each derived class StateIn CTOR handles the restore corresponding to calling save_object_state, save_vbase_state, and save_data_state listed above. | |
Protected Member Functions inherited from sc::RefCount | |
RefCount (const RefCount &) | |
RefCount & | operator= (const RefCount &) |
Protected Attributes | |
double | gtol_ |
double | stpmin_ |
double | stpmax_ |
double | dg |
double | fm |
double | fx |
double | fy |
double | dgm |
double | dgx |
double | dgy |
double | fxm |
double | fym |
double | stx |
double | sty |
double | dgxm |
double | dgym |
int | infoc |
double | finit |
double | width |
double | stmin |
double | stmax |
bool | stage1 |
double | width1 |
double | ftest1 |
bool | brackt |
double | dginit |
double | dgtest |
double | p |
double | q |
double | r__ |
double | s |
double | sgnd |
double | stpc |
double | stpf |
double | stpq |
double | gamma |
double | theta |
bool | bound |
int | info_ |
auto_vec< double > | wa_ |
Protected Attributes inherited from sc::LineOpt | |
double | decrease_factor_ |
RefSCVector | initial_x_ |
double | initial_value_ |
RefSCVector | initial_grad_ |
RefSCVector | search_direction_ |
Ref< Function > | function_ |
Protected Attributes inherited from sc::Optimize | |
int | max_iterations_ |
int | n_iterations_ |
int | ckpt_ |
int | print_timings_ |
double | max_stepsize_ |
char * | ckpt_file |
Ref< Function > | function_ |
Ref< Convergence > | conv_ |
Additional Inherited Members | |
Static Public Member Functions inherited from sc::SavableState | |
static void | save_state (SavableState *s, StateOut &) |
static SavableState * | restore_state (StateIn &si) |
Restores objects saved with save_state. | |
static SavableState * | key_restore_state (StateIn &si, const char *keyword) |
Like restore_state, but keyword is used to override values while restoring. | |
static SavableState * | dir_restore_state (StateIn &si, const char *objectname, const char *keyword=0) |
This performs line searches with cubic steps.
It is based on the Fortran MCSRCH and MCSTEP routines produced by: Argonne National Laboratory. MINPACK Project. June 1983 Jorge J. More', David J. Thuente.
The MCSearch KeyVal CTOR does not read any input.
See the LineOpt KeyVal CTOR for parameters that it takes.
References MCSearch().
Referenced by MCSearch().
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Initializes the line search object.
Argument is a search direction. Use of this method assumes the Optimize base class already has a function object (got it from a keyval or elsewhere).
Reimplemented from sc::LineOpt.
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virtual |
Initializes the line search object.
First argument is a search direction, second argument is a function object to optimize. Use this method when a function must be passed to the Optimize base class.
Reimplemented from sc::LineOpt.
References sc::Optimize::function().
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virtual |