class Group, with constant, linear and nonlinear terms:
More...
#include <CouenneExprGroup.hpp>
Public Types | |
typedef std::vector< std::pair < exprVar *, CouNumber > > | lincoeff |
Public Member Functions | |
exprGroup (CouNumber, lincoeff &, expression **=NULL, int=0) | |
Constructor. | |
exprGroup (const exprGroup &src, Domain *d=NULL) | |
Copy constructor. | |
virtual | ~exprGroup () |
Destructor -- needed to clear bounds. | |
virtual expression * | clone (Domain *d=NULL) const |
Cloning method. | |
CouNumber | getc0 () |
return constant term | |
lincoeff & | lcoeff () const |
return linear term coefficients | |
virtual void | print (std::ostream &=std::cout, bool=false) const |
Print expression to iostream. | |
virtual CouNumber | operator() () |
function for the evaluation of the expression | |
virtual CouNumber | gradientNorm (const double *x) |
return l-2 norm of gradient at given point | |
virtual int | DepList (std::set< int > &deplist, enum dig_type type=ORIG_ONLY) |
fill in the set with all indices of variables appearing in the expression | |
virtual expression * | differentiate (int index) |
differentiation | |
virtual expression * | simplify () |
simplification | |
virtual int | Linearity () |
get a measure of "how linear" the expression is: | |
virtual void | getBounds (expression *&, expression *&) |
Get lower and upper bound of an expression (if any). | |
virtual void | getBounds (CouNumber &, CouNumber &) |
Get lower and upper bound of an expression (if any). | |
virtual void | generateCuts (expression *, OsiCuts &, const CouenneCutGenerator *, t_chg_bounds *=NULL, int=-1, CouNumber=-COUENNE_INFINITY, CouNumber=COUENNE_INFINITY) |
special version for linear constraints | |
virtual int | compare (exprGroup &) |
only compare with people of the same kind | |
virtual enum expr_type | code () |
code for comparisons | |
virtual bool | isInteger () |
is this expression integer? | |
virtual int | rank () |
used in rank-based branching variable choice | |
virtual void | fillDepSet (std::set< DepNode *, compNode > *, DepGraph *) |
update dependence set with index of this variable | |
virtual void | replace (exprVar *x, exprVar *w) |
replace variable x with new (aux) w | |
virtual void | realign (const CouenneProblem *p) |
redirect variables to proper variable vector | |
Static Public Member Functions | |
static expression * | genExprGroup (CouNumber, lincoeff &, expression **=NULL, int=0) |
Generalized (static) constructor: check parameters and return a constant, a single variable, or a real exprGroup. | |
Protected Attributes | |
lincoeff | lcoeff_ |
coefficients and indices of the linear term | |
CouNumber | c0_ |
constant term |
class Group, with constant, linear and nonlinear terms:
Definition at line 25 of file CouenneExprGroup.hpp.
typedef std::vector<std::pair <exprVar *, CouNumber> > Couenne::exprGroup::lincoeff |
Definition at line 29 of file CouenneExprGroup.hpp.
Couenne::exprGroup::exprGroup | ( | CouNumber | , | |
lincoeff & | , | |||
expression ** | = NULL , |
|||
int | = 0 | |||
) |
Constructor.
Referenced by clone().
virtual Couenne::exprGroup::~exprGroup | ( | ) | [virtual] |
Destructor -- needed to clear bounds.
static expression* Couenne::exprGroup::genExprGroup | ( | CouNumber | , | |
lincoeff & | , | |||
expression ** | = NULL , |
|||
int | = 0 | |||
) | [static] |
Generalized (static) constructor: check parameters and return a constant, a single variable, or a real exprGroup.
virtual expression* Couenne::exprGroup::clone | ( | Domain * | d = NULL |
) | const [inline, virtual] |
Cloning method.
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 58 of file CouenneExprGroup.hpp.
References exprGroup().
CouNumber Couenne::exprGroup::getc0 | ( | ) | [inline] |
lincoeff& Couenne::exprGroup::lcoeff | ( | ) | const [inline] |
return linear term coefficients
Definition at line 63 of file CouenneExprGroup.hpp.
References lcoeff_.
virtual void Couenne::exprGroup::print | ( | std::ostream & | = std::cout , |
|
bool | = false | |||
) | const [virtual] |
Print expression to iostream.
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
CouNumber Couenne::exprGroup::operator() | ( | ) | [inline, virtual] |
function for the evaluation of the expression
compute sum of linear and nonlinear terms
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 127 of file CouenneExprGroup.hpp.
virtual CouNumber Couenne::exprGroup::gradientNorm | ( | const double * | x | ) | [virtual] |
return l-2 norm of gradient at given point
Reimplemented from Couenne::expression.
Reimplemented in Couenne::exprQuad.
virtual int Couenne::exprGroup::DepList | ( | std::set< int > & | deplist, | |
enum dig_type | type = ORIG_ONLY | |||
) | [virtual] |
fill in the set with all indices of variables appearing in the expression
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
virtual expression* Couenne::exprGroup::differentiate | ( | int | index | ) | [virtual] |
virtual expression* Couenne::exprGroup::simplify | ( | ) | [virtual] |
virtual int Couenne::exprGroup::Linearity | ( | ) | [virtual] |
get a measure of "how linear" the expression is:
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
virtual void Couenne::exprGroup::getBounds | ( | expression *& | , | |
expression *& | ||||
) | [virtual] |
Get lower and upper bound of an expression (if any).
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Get lower and upper bound of an expression (if any).
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
virtual void Couenne::exprGroup::generateCuts | ( | expression * | , | |
OsiCuts & | , | |||
const CouenneCutGenerator * | , | |||
t_chg_bounds * | = NULL , |
|||
int | = -1 , |
|||
CouNumber | = -COUENNE_INFINITY , |
|||
CouNumber | = COUENNE_INFINITY | |||
) | [virtual] |
special version for linear constraints
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
virtual int Couenne::exprGroup::compare | ( | exprGroup & | ) | [virtual] |
only compare with people of the same kind
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
virtual enum expr_type Couenne::exprGroup::code | ( | ) | [inline, virtual] |
code for comparisons
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 106 of file CouenneExprGroup.hpp.
References Couenne::COU_EXPRGROUP.
virtual bool Couenne::exprGroup::isInteger | ( | ) | [virtual] |
virtual int Couenne::exprGroup::rank | ( | ) | [virtual] |
used in rank-based branching variable choice
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
virtual void Couenne::exprGroup::fillDepSet | ( | std::set< DepNode *, compNode > * | , | |
DepGraph * | ||||
) | [virtual] |
update dependence set with index of this variable
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
replace variable x with new (aux) w
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
virtual void Couenne::exprGroup::realign | ( | const CouenneProblem * | p | ) | [virtual] |
redirect variables to proper variable vector
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
lincoeff Couenne::exprGroup::lcoeff_ [mutable, protected] |
coefficients and indices of the linear term
Definition at line 33 of file CouenneExprGroup.hpp.
Referenced by lcoeff(), Couenne::exprQuad::Linearity(), and operator()().
CouNumber Couenne::exprGroup::c0_ [protected] |
constant term
Definition at line 34 of file CouenneExprGroup.hpp.
Referenced by getc0(), Couenne::exprQuad::Linearity(), and operator()().