Constraints using row with static variable set. More...
#include <ogdf/lib/abacus/srowcon.h>
Public Member Functions  
SRowCon (Master *master, const Sub *sub, CSense::SENSE sense, int nnz, const Array< int > &support, const Array< double > &coeff, double rhs, bool dynamic, bool local, bool liftable)  
Creates a row constraint. More...  
SRowCon (Master *master, const Sub *sub, CSense::SENSE sense, int nnz, int *support, double *coeff, double rhs, bool dynamic, bool local, bool liftable)  
Creates a row constraint. More...  
virtual  ~SRowCon () 
The destructor. More...  
virtual int  genRow (Active< Variable, Constraint > *var, Row &row) const override 
Generates the row format of the constraint associated with the variable set var. More...  
virtual double  slack (Active< Variable, Constraint > *variables, double *x) const override 
Computes the slack of a vector associated with the variable set variables. More...  
Public Member Functions inherited from abacus::RowCon  
RowCon (Master *master, const Sub *sub, CSense::SENSE sense, int nnz, const Array< int > &support, const Array< double > &coeff, double rhs, bool dynamic, bool local, bool liftable)  
Creates a row constraint. More...  
RowCon (Master *master, const Sub *sub, CSense::SENSE sense, int nnz, int *support, double *coeff, double rhs, bool dynamic, bool local, bool liftable)  
Creates a row constraint. More...  
virtual  ~RowCon () 
The destructor. More...  
virtual double  coeff (const Variable *v) const override 
Computes the coefficient of a variable which must be of type NumVar. More...  
virtual void  print (std::ostream &out) const override 
Writes the row format of the constraint on an output stream. More...  
Row *  row () 
Returns a pointer to the object of the class Row representing the constraint. More...  
const Row *  row () const 
Returns a const pointer to the object of the class Row representing the constraint. More...  
Public Member Functions inherited from abacus::Constraint  
Constraint (const Constraint &rhs)  
Copy constructor. More...  
Constraint (Master *master)  
Initializes an empty constraint. More...  
Constraint (Master *master, const Sub *sub, CSense::SENSE sense, double rhs, bool dynamic, bool local, bool liftable)  
Initializes a constraint. More...  
virtual  ~Constraint () 
ConClass *  classification (Active< Variable, Constraint > *var=nullptr) const 
Returns a pointer to the classification of the constraint. More...  
virtual double  distance (double *x, Active< Variable, Constraint > *actVar) const 
Returns the Euclidean distance of x associated with variable set actVar to the hyperplane induced by the constraint. More...  
bool  liftable () const 
Checks if the constraint is liftable. More...  
void  printRow (std::ostream &out, Active< Variable, Constraint > *var) const 
Writes the row format of the constraint associated with the variable set var to output stream out. More...  
virtual double  rhs () const 
Returns the right hand side of the constraint. More...  
CSense *  sense () 
Returns a pointer to the sense of the constraint. More...  
const CSense *  sense () const 
Returns a const pointer to the sense of the constraint. More...  
virtual bool  valid (Sub *sub) const 
Checks if the constraint is valid for the subproblem sub. More...  
virtual bool  violated (Active< Variable, Constraint > *variables, double *x, double *sl=nullptr) const 
Checks if a constraint is violated by a vector x associated with a variable set. More...  
virtual bool  violated (double slack) const 
Checks if a constraint is violated given the slack of a vector. More...  
Public Member Functions inherited from abacus::ConVar  
ConVar (Master *master, const Sub *sub, bool dynamic, bool local)  
Creates an instance of type ConVar. More...  
virtual  ~ConVar () 
bool  active () const 
Checks if the constraint/variable is active in at least one active subproblem. More...  
virtual bool  dynamic () const 
Return true if the constraint/variable is dynamic. More...  
virtual bool  equal (const ConVar *cv) const 
Should compare if the constraint/variable is identical (in a mathematical sense) with the constraint/variable cv. More...  
bool  global () const 
Returns true if the constraint/variable is globally valid, false otherwise. More...  
virtual unsigned  hashKey () const 
Should provide a key for the constraint/variable that can be used to insert it into a hash table. More...  
bool  local () const 
Returns true if the constraint/variable is only locally valid, false otherwise. More...  
virtual const char *  name () const 
Should return the name of the constraint/variable. More...  
virtual double  rank () const 
The function should return a rank associated with the constraint/variable. More...  
const Sub *  sub () const 
Returns a const pointer to the subproblem associated with the constraint/variable. More...  
void  sub (Sub *sub) 
Associates a new subproblem with the constraint/variable. More...  
bool  expanded () const 
Returns true if the expanded format of a constraint/variable is available, false otherwise. More...  
virtual void  expand () const 
Expands a constraint/variable. More...  
virtual void  compress () const 
Compresses a constraint/variable. More...  
virtual bool  deletable () const 
Returns true if the constraint/variable can be destructed. More...  
Public Member Functions inherited from abacus::AbacusRoot  
virtual  ~AbacusRoot () 
The destructor. More...  
Additional Inherited Members  
Static Public Member Functions inherited from abacus::AbacusRoot  
static bool  ascii2bool (const string &str) 
Converts the string str to a boolean value. More...  
static bool  endsWith (const string &str, const string &end) 
Returns true if str ends with end, false otherwise. More...  
static double  fracPart (double x) 
Returns the absolute value of the fractional part of x. More...  
static const char *  onOff (bool value) 
Converts a boolean variable to the strings "on" and "off". More...  
Protected Member Functions inherited from abacus::Constraint  
virtual ConClass *  classify (Active< Variable, Constraint > *var) const 
The default implementation returns a 0 pointer. More...  
virtual InfeasCon::INFEAS  voidLhsViolated (double newRhs) const 
Can be called if after variable elimination the left hand side of the constraint has become void and the right hand side has been adapted to newRhs. More...  
Protected Attributes inherited from abacus::RowCon  
Row  row_ 
The representation of the constraint. More...  
Protected Attributes inherited from abacus::Constraint  
ConClass *  conClass_ 
bool  liftable_ 
This member is true if also coefficients of variables which have been inactive at generation time can be computed, false otherwise. More...  
double  rhs_ 
The right hand side of the constraint. More...  
CSense  sense_ 
The sense of the constraint. More...  
Protected Attributes inherited from abacus::ConVar  
bool  dynamic_ 
If this member is true then the constraint/variable can be also removed from the active formulation after it is added the first time. More...  
bool  expanded_ 
true, if expanded version of constraint/variables available. More...  
bool  local_ 
true if the constraint/variable is only locally valid More...  
Master *  master_ 
A pointer to the corresponding master of the optimization. More...  
int  nActive_ 
The number of active subproblems of which the constraint/variable belongs to the set of active constraints/variables. More...  
int  nLocks_ 
The number of locks which have been set on the constraint/variable. More...  
int  nReferences_ 
The number of references to the pool slot the constraint is stored in. More...  
const Sub *  sub_ 
A pointer to the subproblem associated with the constraint/variable. More...  
Constraints using row with static variable set.
The member functions genRow() and slack() of the class RowCon can be significantly improved if the variable set is static, i.e., no variables are added or removed during the optimization. Therefore we implement the class SRowCon.

inline 
Creates a row constraint.
master  A pointer to the corresponding master of the optimization. 
sub  A pointer to the subproblem associated with the constraint. This can be also the 0pointer. 
sense  The sense of the constraint. 
nnz  The number of nonzero elements of the constraint. 
support  The array storing the variables with nonzero coefficients. 
coeff  The nonzero coefficients of the variables stored in support. 
rhs  The right hand side of the constraint. 
dynamic  If this argument is true, then the constraint can be removed from the active constraint set during the cutting plane phase of the subproblem optimization. 
local  If this argument is true, then the constraint is considered to be only locally valid. As a locally valid constraint is associated with a subproblem, sub must not be 0 if local is true. 
liftable  If this argument is true, then a lifting procedure must be available, i.e., that the coefficients of variables which have not been active at generation time of the constraint can be computed. 

inline 
Creates a row constraint.
master  A pointer to the corresponding master of the optimization. 
sub  A pointer to the subproblem associated with the constraint. This can be also the 0pointer. 
sense  The sense of the constraint. 
nnz  The number of nonzero elements of the constraint. 
support  The array storing the variables with nonzero coefficients. 
coeff  The nonzero coefficients of the variables stored in support. 
rhs  The right hand side of the constraint. 
dynamic  If this argument is true, then the constraint can be removed from the active constraint set during the cutting plane phase of the subproblem optimization. 
local  If this argument is true, then the constraint is considered to be only locally valid. As a locally valid constraint is associated with a subproblem, sub must not be 0 if local is true. 
liftable  If this argument is true, then a lifting procedure must be available, i.e., that the coefficients of variables which have not been active at generation time of the constraint can be computed. 

inlinevirtual 

inlineoverridevirtual 
Generates the row format of the constraint associated with the variable set var.
This function redefines a virtual function of the base class RowCon.
var  The variable set for which the row format is generated is only a dummy since the the variable set is assumed to be fixed for this constraint class. 
row  Holds the row format of the constraint after the execution of this function. 
Reimplemented from abacus::Constraint.

overridevirtual 
Computes the slack of a vector associated with the variable set variables.
This function redefines a virtual function of the base class RowCon.
variables  The variable set for which the row format is generated is only a dummy since the the variable set is assumed to be fixed for this constraint class. 
x  An array of length equal to the number of variables. 
Reimplemented from abacus::Constraint.