class Group, with constant, linear and nonlinear terms:
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#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.
| exprGroup::~exprGroup | ( | ) | [virtual] |
Destructor -- needed to clear bounds.
Destructor -- check if there are exprBounds and delete them.
Definition at line 103 of file exprGroup.cpp.
| 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.
| CouNumber Couenne::exprGroup::getc0 | ( | ) | [inline] |
return constant term
Definition at line 62 of file CouenneExprGroup.hpp.
| lincoeff& Couenne::exprGroup::lcoeff | ( | ) | const [inline] |
return linear term coefficients
Definition at line 63 of file CouenneExprGroup.hpp.
| void exprGroup::print | ( | std::ostream & | out = std::cout, |
|
| bool | descend = false | |||
| ) | const [virtual] |
Print expression to iostream.
I/O.
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 115 of file exprGroup.cpp.
| 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.
| CouNumber exprGroup::gradientNorm | ( | const double * | x | ) | [virtual] |
return l-2 norm of gradient at given point
return l-2 norm of gradient at given point.
Not needed for now, as we only use it with nonlinear operators
Reimplemented from Couenne::expression.
Reimplemented in Couenne::exprQuad.
Definition at line 376 of file exprGroup.cpp.
| int 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.
Definition at line 264 of file exprGroup.cpp.
| expression * exprGroup::differentiate | ( | int | index | ) | [virtual] |
differentiation
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 150 of file exprGroup.cpp.
| expression * exprGroup::simplify | ( | ) | [virtual] |
simplification
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 407 of file exprGroup.cpp.
| int exprGroup::Linearity | ( | ) | [virtual] |
get a measure of "how linear" the expression is:
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 179 of file exprGroup.cpp.
| void exprGroup::getBounds | ( | expression *& | lb, | |
| expression *& | ub | |||
| ) | [virtual] |
Get lower and upper bound of an expression (if any).
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 25 of file conv-exprGroup.cpp.
Get lower and upper bound of an expression (if any).
Get values of lower and upper bound of an expression (if any).
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 136 of file conv-exprGroup.cpp.
| void exprGroup::generateCuts | ( | expression * | w, | |
| OsiCuts & | cs, | |||
| const CouenneCutGenerator * | cg, | |||
| t_chg_bounds * | chg = NULL, |
|||
| int | wind = -1, |
|||
| CouNumber | lb = -COUENNE_INFINITY, |
|||
| CouNumber | ub = COUENNE_INFINITY | |||
| ) | [virtual] |
special version for linear constraints
Reimplemented from Couenne::exprSum.
Reimplemented in Couenne::exprQuad.
Definition at line 196 of file conv-exprGroup.cpp.
| int exprGroup::compare | ( | exprGroup & | e | ) | [virtual] |
only compare with people of the same kind
compare affine terms
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 192 of file exprGroup.cpp.
| 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.
| bool exprGroup::isInteger | ( | ) | [virtual] |
is this expression integer?
is this linear term integer?
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 290 of file exprGroup.cpp.
| int exprGroup::rank | ( | ) | [virtual] |
used in rank-based branching variable choice
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 234 of file exprGroup.cpp.
update dependence set with index of this variable
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 253 of file exprGroup.cpp.
replace variable x with new (aux) w
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 325 of file exprGroup.cpp.
| void exprGroup::realign | ( | const CouenneProblem * | p | ) | [virtual] |
redirect variables to proper variable vector
Redirect variables to proper variable vector.
Reimplemented from Couenne::exprOp.
Reimplemented in Couenne::exprQuad.
Definition at line 388 of file exprGroup.cpp.
lincoeff Couenne::exprGroup::lcoeff_ [mutable, protected] |
coefficients and indices of the linear term
Definition at line 33 of file CouenneExprGroup.hpp.
CouNumber Couenne::exprGroup::c0_ [protected] |
constant term
Definition at line 34 of file CouenneExprGroup.hpp.
1.6.1