Couenne::exprCopy Class Reference

#include <CouenneExprCopy.hpp>

Inheritance diagram for Couenne::exprCopy:
Couenne::expression Couenne::exprClone Couenne::exprStore

List of all members.

Public Member Functions

enum nodeType Type () const
 node type
 exprCopy (expression *copy)
 Empty constructor - used in cloning method of exprClone.
 exprCopy (const exprCopy &e, Domain *d=NULL)
 Copy constructor.
virtual ~exprCopy ()
 Destructor -- CAUTION: this is the only destructive destructor, exprClone and exprStore do not destroy anything.
virtual expressionclone (Domain *d=NULL) const
 Cloning method.
const expressionOriginal () const
 If this is an exprClone of a exprClone of an expr???, point to the original expr??? instead of an exprClone -- improves computing efficiency.
bool isaCopy () const
 return true if this is a copy of something, i.e.
expressionCopy () const
 return copy of this expression (only makes sense in exprCopy)
expressionImage () const
 return pointer to corresponding expression (for auxiliary variables only)
int Index () const
 Get variable index in problem.
int nArgs () const
 Return number of arguments (when applicable, that is, with N-ary functions).
expression ** ArgList () const
 return arglist (when applicable, that is, with N-ary functions)
void ArgList (expression **al)
 set arglist (used in deleting nodes without deleting children)
expressionArgument () const
 return argument (when applicable, i.e., with univariate functions)
expression ** ArgPtr ()
 return pointer to argument (when applicable, i.e., with univariate functions)
virtual void print (std::ostream &out=std::cout, bool descend=false) const
 I/O.
virtual CouNumber Value () const
 value
virtual CouNumber operator() ()
 null function for evaluating the expression
CouNumber gradientNorm (const double *x)
 return l-2 norm of gradient at given point
expressiondifferentiate (int index)
 differentiation
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
expressionsimplify ()
 simplify expression (useful for derivatives)
int Linearity ()
 get a measure of "how linear" the expression is (see CouenneTypes.h)
bool isInteger ()
 is this expression integer?
virtual bool isDefinedInteger ()
 is this expression DEFINED as integer?
void getBounds (expression *&lower, expression *&upper)
 Get lower and upper bound of an expression (if any).
void getBounds (CouNumber &lower, CouNumber &upper)
 Get value of lower and upper bound of an expression (if any).
exprAuxstandardize (CouenneProblem *p, bool addAux=true)
 Create standard formulation of this expression.
void generateCuts (expression *w, OsiCuts &cs, const CouenneCutGenerator *cg, t_chg_bounds *chg=NULL, int wind=-1, CouNumber lb=-COUENNE_INFINITY, CouNumber ub=COUENNE_INFINITY)
 generate convexification cut for constraint w = this
enum expr_type code ()
 code for comparisons
enum convexity convexity () const
 either CONVEX, CONCAVE, AFFINE, or NONCONVEX
int compare (expression &e)
 compare this with other expression
int rank ()
 used in rank-based branching variable choice
bool impliedBound (int wind, CouNumber *l, CouNumber *u, t_chg_bounds *chg)
 implied bound processing
int Multiplicity ()
 multiplicity of a variable: how many times this variable occurs in expressions throughout the problem
CouNumber selectBranch (const CouenneObject *obj, const OsiBranchingInformation *info, expression *&var, double *&brpts, double *&brDist, int &way)
 Set up branching object by evaluating many branching points for each expression's arguments.
void replace (exprVar *, exprVar *)
 replace occurrence of a variable with another variable
void fillDepSet (std::set< DepNode *, compNode > *dep, DepGraph *g)
 fill in dependence structure
void realign (const CouenneProblem *p)
 redirect variables to proper variable vector
bool isBijective () const
 indicating if function is monotonically increasing
CouNumber inverse (expression *vardep) const
 compute the inverse function
void closestFeasible (expression *varind, expression *vardep, CouNumber &left, CouNumber &right) const
 closest feasible points in function in both directions
bool isCuttable (CouenneProblem *problem, int index) const
 can this expression be further linearized or are we on its concave ("bad") side

Protected Attributes

expressioncopy_
 the expression this object is a (reference) copy of
CouNumber value_
 saved value to be used by exprStore expressions

Detailed Description

Definition at line 25 of file CouenneExprCopy.hpp.


Constructor & Destructor Documentation

Couenne::exprCopy::exprCopy ( expression copy  )  [inline]

Empty constructor - used in cloning method of exprClone.

Constructor

Definition at line 45 of file CouenneExprCopy.hpp.

Referenced by clone().

Couenne::exprCopy::exprCopy ( const exprCopy e,
Domain d = NULL 
)

Copy constructor.

virtual Couenne::exprCopy::~exprCopy (  )  [inline, virtual]

Destructor -- CAUTION: this is the only destructive destructor, exprClone and exprStore do not destroy anything.

Definition at line 55 of file CouenneExprCopy.hpp.

References copy_.


Member Function Documentation

enum nodeType Couenne::exprCopy::Type (  )  const [inline, virtual]

node type

Reimplemented from Couenne::expression.

Definition at line 38 of file CouenneExprCopy.hpp.

References copy_, and Type().

Referenced by Type().

virtual expression* Couenne::exprCopy::clone ( Domain d = NULL  )  const [inline, virtual]

Cloning method.

Reimplemented from Couenne::expression.

Reimplemented in Couenne::exprClone, and Couenne::exprStore.

Definition at line 61 of file CouenneExprCopy.hpp.

References exprCopy().

const expression* Couenne::exprCopy::Original (  )  const [inline, virtual]

If this is an exprClone of a exprClone of an expr???, point to the original expr??? instead of an exprClone -- improves computing efficiency.

Reimplemented from Couenne::expression.

Definition at line 67 of file CouenneExprCopy.hpp.

References copy_, and Original().

Referenced by Original().

bool Couenne::exprCopy::isaCopy (  )  const [inline, virtual]

return true if this is a copy of something, i.e.

if it is an exprCopy or derivates

Reimplemented from Couenne::expression.

Definition at line 72 of file CouenneExprCopy.hpp.

Referenced by Copy().

expression* Couenne::exprCopy::Copy (  )  const [inline, virtual]

return copy of this expression (only makes sense in exprCopy)

Reimplemented from Couenne::expression.

Definition at line 76 of file CouenneExprCopy.hpp.

References Copy(), copy_, and isaCopy().

Referenced by Copy().

expression* Couenne::exprCopy::Image (  )  const [inline, virtual]

return pointer to corresponding expression (for auxiliary variables only)

Reimplemented from Couenne::expression.

Definition at line 80 of file CouenneExprCopy.hpp.

References copy_, and Image().

Referenced by Image().

int Couenne::exprCopy::Index (  )  const [inline, virtual]

Get variable index in problem.

Reimplemented from Couenne::expression.

Definition at line 84 of file CouenneExprCopy.hpp.

References copy_, and Index().

Referenced by Index().

int Couenne::exprCopy::nArgs (  )  const [inline, virtual]

Return number of arguments (when applicable, that is, with N-ary functions).

Reimplemented from Couenne::expression.

Definition at line 88 of file CouenneExprCopy.hpp.

References copy_, and nArgs().

Referenced by nArgs().

expression** Couenne::exprCopy::ArgList (  )  const [inline, virtual]

return arglist (when applicable, that is, with N-ary functions)

Reimplemented from Couenne::expression.

Definition at line 92 of file CouenneExprCopy.hpp.

References ArgList(), and copy_.

Referenced by ArgList().

void Couenne::exprCopy::ArgList ( expression **  al  )  [inline]

set arglist (used in deleting nodes without deleting children)

Definition at line 96 of file CouenneExprCopy.hpp.

References ArgList(), and copy_.

Referenced by ArgList().

expression* Couenne::exprCopy::Argument (  )  const [inline, virtual]

return argument (when applicable, i.e., with univariate functions)

Reimplemented from Couenne::expression.

Definition at line 100 of file CouenneExprCopy.hpp.

References Argument(), and copy_.

Referenced by Argument().

expression** Couenne::exprCopy::ArgPtr (  )  [inline, virtual]

return pointer to argument (when applicable, i.e., with univariate functions)

Reimplemented from Couenne::expression.

Definition at line 104 of file CouenneExprCopy.hpp.

References ArgPtr(), and copy_.

Referenced by ArgPtr().

virtual void Couenne::exprCopy::print ( std::ostream &  out = std::cout,
bool  descend = false 
) const [virtual]

I/O.

Reimplemented from Couenne::expression.

Reimplemented in Couenne::exprClone, and Couenne::exprStore.

virtual CouNumber Couenne::exprCopy::Value (  )  const [inline, virtual]

value

Reimplemented from Couenne::expression.

Reimplemented in Couenne::exprClone.

Definition at line 112 of file CouenneExprCopy.hpp.

References value_.

Referenced by Couenne::exprStore::operator()().

virtual CouNumber Couenne::exprCopy::operator() (  )  [inline, virtual]

null function for evaluating the expression

Implements Couenne::expression.

Reimplemented in Couenne::exprClone, and Couenne::exprStore.

Definition at line 116 of file CouenneExprCopy.hpp.

References copy_, and value_.

CouNumber Couenne::exprCopy::gradientNorm ( const double *  x  )  [inline, virtual]

return l-2 norm of gradient at given point

Reimplemented from Couenne::expression.

Definition at line 122 of file CouenneExprCopy.hpp.

References copy_, and gradientNorm().

Referenced by gradientNorm().

expression* Couenne::exprCopy::differentiate ( int  index  )  [inline, virtual]

differentiation

Reimplemented from Couenne::expression.

Definition at line 126 of file CouenneExprCopy.hpp.

References copy_, and differentiate().

Referenced by differentiate().

int Couenne::exprCopy::DepList ( std::set< int > &  deplist,
enum dig_type  type = ORIG_ONLY 
) [inline, virtual]

fill in the set with all indices of variables appearing in the expression

Reimplemented from Couenne::expression.

Definition at line 131 of file CouenneExprCopy.hpp.

References copy_, and DepList().

Referenced by DepList().

expression* Couenne::exprCopy::simplify (  )  [inline, virtual]

simplify expression (useful for derivatives)

Reimplemented from Couenne::expression.

Definition at line 136 of file CouenneExprCopy.hpp.

References copy_, and simplify().

Referenced by simplify().

int Couenne::exprCopy::Linearity (  )  [inline, virtual]

get a measure of "how linear" the expression is (see CouenneTypes.h)

Reimplemented from Couenne::expression.

Definition at line 140 of file CouenneExprCopy.hpp.

References copy_, and Linearity().

Referenced by Linearity().

bool Couenne::exprCopy::isInteger (  )  [inline, virtual]

is this expression integer?

Reimplemented from Couenne::expression.

Definition at line 143 of file CouenneExprCopy.hpp.

References copy_, and isInteger().

Referenced by isInteger().

virtual bool Couenne::exprCopy::isDefinedInteger (  )  [inline, virtual]

is this expression DEFINED as integer?

Reimplemented from Couenne::expression.

Definition at line 147 of file CouenneExprCopy.hpp.

References copy_, and isDefinedInteger().

Referenced by isDefinedInteger().

void Couenne::exprCopy::getBounds ( expression *&  lower,
expression *&  upper 
) [inline]

Get lower and upper bound of an expression (if any).

Definition at line 151 of file CouenneExprCopy.hpp.

References copy_, and getBounds().

Referenced by getBounds().

void Couenne::exprCopy::getBounds ( CouNumber lower,
CouNumber upper 
) [inline, virtual]

Get value of lower and upper bound of an expression (if any).

Reimplemented from Couenne::expression.

Definition at line 155 of file CouenneExprCopy.hpp.

References copy_, and getBounds().

Referenced by getBounds().

exprAux* Couenne::exprCopy::standardize ( CouenneProblem p,
bool  addAux = true 
) [inline, virtual]

Create standard formulation of this expression.

Reimplemented from Couenne::expression.

Definition at line 160 of file CouenneExprCopy.hpp.

References copy_, and standardize().

Referenced by standardize().

void Couenne::exprCopy::generateCuts ( expression w,
OsiCuts &  cs,
const CouenneCutGenerator cg,
t_chg_bounds chg = NULL,
int  wind = -1,
CouNumber  lb = -COUENNE_INFINITY,
CouNumber  ub = COUENNE_INFINITY 
) [inline]

generate convexification cut for constraint w = this

Definition at line 164 of file CouenneExprCopy.hpp.

References copy_, and generateCuts().

Referenced by generateCuts().

enum expr_type Couenne::exprCopy::code (  )  [inline, virtual]

code for comparisons

Reimplemented from Couenne::expression.

Definition at line 173 of file CouenneExprCopy.hpp.

References code(), and copy_.

Referenced by code().

enum convexity Couenne::exprCopy::convexity (  )  const [inline, virtual]

either CONVEX, CONCAVE, AFFINE, or NONCONVEX

Reimplemented from Couenne::expression.

Definition at line 177 of file CouenneExprCopy.hpp.

References convexity(), and copy_.

Referenced by convexity().

int Couenne::exprCopy::compare ( expression e  )  [inline]

compare this with other expression

Definition at line 181 of file CouenneExprCopy.hpp.

References compare(), and copy_.

Referenced by compare().

int Couenne::exprCopy::rank (  )  [inline, virtual]

used in rank-based branching variable choice

Reimplemented from Couenne::expression.

Definition at line 185 of file CouenneExprCopy.hpp.

References copy_, and rank().

Referenced by rank().

bool Couenne::exprCopy::impliedBound ( int  wind,
CouNumber l,
CouNumber u,
t_chg_bounds chg 
) [inline]

implied bound processing

Definition at line 189 of file CouenneExprCopy.hpp.

References copy_, and impliedBound().

Referenced by impliedBound().

int Couenne::exprCopy::Multiplicity (  )  [inline, virtual]

multiplicity of a variable: how many times this variable occurs in expressions throughout the problem

Reimplemented from Couenne::expression.

Definition at line 194 of file CouenneExprCopy.hpp.

References copy_, and Multiplicity().

Referenced by Multiplicity().

CouNumber Couenne::exprCopy::selectBranch ( const CouenneObject obj,
const OsiBranchingInformation *  info,
expression *&  var,
double *&  brpts,
double *&  brDist,
int &  way 
) [inline]

Set up branching object by evaluating many branching points for each expression's arguments.

Return estimated improvement in objective function

Definition at line 199 of file CouenneExprCopy.hpp.

References copy_, and selectBranch().

Referenced by selectBranch().

void Couenne::exprCopy::replace ( exprVar ,
exprVar  
) [virtual]

replace occurrence of a variable with another variable

Reimplemented from Couenne::expression.

void Couenne::exprCopy::fillDepSet ( std::set< DepNode *, compNode > *  dep,
DepGraph g 
) [inline, virtual]

fill in dependence structure

Reimplemented from Couenne::expression.

Definition at line 213 of file CouenneExprCopy.hpp.

References copy_, and fillDepSet().

Referenced by fillDepSet().

void Couenne::exprCopy::realign ( const CouenneProblem p  )  [virtual]

redirect variables to proper variable vector

Reimplemented from Couenne::expression.

bool Couenne::exprCopy::isBijective (  )  const [inline, virtual]

indicating if function is monotonically increasing

Reimplemented from Couenne::expression.

Definition at line 221 of file CouenneExprCopy.hpp.

References copy_, and isBijective().

Referenced by isBijective().

CouNumber Couenne::exprCopy::inverse ( expression vardep  )  const [inline]

compute the inverse function

Definition at line 225 of file CouenneExprCopy.hpp.

References copy_, and inverse().

Referenced by inverse().

void Couenne::exprCopy::closestFeasible ( expression varind,
expression vardep,
CouNumber left,
CouNumber right 
) const [inline]

closest feasible points in function in both directions

Definition at line 229 of file CouenneExprCopy.hpp.

References closestFeasible(), and copy_.

Referenced by closestFeasible().

bool Couenne::exprCopy::isCuttable ( CouenneProblem problem,
int  index 
) const [inline, virtual]

can this expression be further linearized or are we on its concave ("bad") side

Reimplemented from Couenne::expression.

Definition at line 235 of file CouenneExprCopy.hpp.

References copy_, and isCuttable().

Referenced by isCuttable().


Member Data Documentation

saved value to be used by exprStore expressions

Reimplemented in Couenne::exprStore.

Definition at line 33 of file CouenneExprCopy.hpp.

Referenced by operator()(), and Value().


The documentation for this class was generated from the following file:
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines

Generated on 14 Jan 2015 for Couenne by  doxygen 1.6.1