XPRSprob.Attributes

Method Detail

• getRows

  public int getRows()

  Retrieves the value of the attribute XPRSconstants.ROWS. Number of rows (i.e. constraints) in the matrix.

  This attribute is used in the following examples:

  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • LoadLP
  • Repair
  • Tableau
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.ROWS.

• getSets

  public int getSets()

  Retrieves the value of the attribute XPRSconstants.SETS. Number of special ordered sets in the matrix.

  This attribute is used in the following examples:

  • Repair

  Returns:

  Value of attribute XPRSconstants.SETS.

• getSetMembers

  public long getSetMembers()

  Retrieves the value of the attribute XPRSconstants.SETMEMBERS. Number of variables within special ordered sets (set members) in the matrix.

  Returns:

  Value of attribute XPRSconstants.SETMEMBERS.

• getElems

  public long getElems()

  Retrieves the value of the attribute XPRSconstants.ELEMS. Number of matrix nonzeros (elements).

  Returns:

  Value of attribute XPRSconstants.ELEMS.

• getPrimalInfeas

  public int getPrimalInfeas()

  Retrieves the value of the attribute XPRSconstants.PRIMALINFEAS. Number of primal infeasibilities.

  Returns:

  Value of attribute XPRSconstants.PRIMALINFEAS.

• getDualInfeas

  public int getDualInfeas()

  Retrieves the value of the attribute XPRSconstants.DUALINFEAS. Number of dual infeasibilities.

  Returns:

  Value of attribute XPRSconstants.DUALINFEAS.

• getSimplexIter

  public int getSimplexIter()

  Retrieves the value of the attribute XPRSconstants.SIMPLEXITER. Number of simplex iterations performed.

  This attribute is used in the following examples:

  • Tableau

  Returns:

  Value of attribute XPRSconstants.SIMPLEXITER.

• getLPStatus

  public XPRSenumerations.LPStatus getLPStatus()

  Retrieves the value of the attribute XPRSconstants.LPSTATUS. LP solution status. (Values are from the enumeration XPRSenumerations.LPStatus)

  This attribute is used in the following examples:

  • Knapsack

  Returns:

  Value of attribute XPRSconstants.LPSTATUS.

• getMIPStatus

  public XPRSenumerations.MIPStatus getMIPStatus()

  Retrieves the value of the attribute XPRSconstants.MIPSTATUS. (MIP) solution status. (Values are from the enumeration XPRSenumerations.MIPStatus)

  This attribute is used in the following examples:

  • FixBV
  • GlobalRHSParametrics
  • SaveSol
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.MIPSTATUS.

• getCuts

  public int getCuts()

  Retrieves the value of the attribute XPRSconstants.CUTS. Number of cuts being added to the matrix.

  Returns:

  Value of attribute XPRSconstants.CUTS.

• getNodes

  public int getNodes()

  Retrieves the value of the attribute XPRSconstants.NODES. Number of nodes solved so far in the MIP search. A node is counted as solved when it is either dropped or branched on.

  This attribute is used in the following examples:

  • FixBV
  • SaveSol

  Returns:

  Value of attribute XPRSconstants.NODES.

• getNodeDepth

  public int getNodeDepth()

  Retrieves the value of the attribute XPRSconstants.NODEDEPTH. Depth of the current node.

  Returns:

  Value of attribute XPRSconstants.NODEDEPTH.

• getActiveNodes

  public int getActiveNodes()

  Retrieves the value of the attribute XPRSconstants.ACTIVENODES. Number of outstanding nodes.

  This attribute is used in the following examples:

  • SaveSol

  Returns:

  Value of attribute XPRSconstants.ACTIVENODES.

• getMIPSolNode

  public int getMIPSolNode()

  Retrieves the value of the attribute XPRSconstants.MIPSOLNODE. Node at which the last integer feasible solution was found.

  This attribute is used in the following examples:

  • SaveSol

  Returns:

  Value of attribute XPRSconstants.MIPSOLNODE.

• getMIPSols

  public int getMIPSols()

  Retrieves the value of the attribute XPRSconstants.MIPSOLS. Number of integer solutions that have been found.

  This attribute is used in the following examples:

  • AddMipSol
  • SaveSol

  Returns:

  Value of attribute XPRSconstants.MIPSOLS.

• getCols

  public int getCols()

  Retrieves the value of the attribute XPRSconstants.COLS. Number of columns (i.e. variables) in the matrix.

  This attribute is used in the following examples:

  • AddMipSol
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • Knapsack
  • MipSolEnum
  • MostViolated
  • Repair
  • RoundInt
  • Tableau
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.COLS.

• getSpareRows

  public int getSpareRows()

  Retrieves the value of the attribute XPRSconstants.SPAREROWS. Number of spare rows in the matrix.

  This attribute is used in the following examples:

  • Tableau

  Returns:

  Value of attribute XPRSconstants.SPAREROWS.

• getSpareCols

  public int getSpareCols()

  Retrieves the value of the attribute XPRSconstants.SPARECOLS. Number of spare columns in the matrix.

  Returns:

  Value of attribute XPRSconstants.SPARECOLS.

• getSpareElems

  public long getSpareElems()

  Retrieves the value of the attribute XPRSconstants.SPAREELEMS. Number of spare matrix elements in the matrix.

  Returns:

  Value of attribute XPRSconstants.SPAREELEMS.

• getSpareMIPEnts

  public int getSpareMIPEnts()

  Retrieves the value of the attribute XPRSconstants.SPAREMIPENTS. Number of spare MIP entities in the matrix.

  Returns:

  Value of attribute XPRSconstants.SPAREMIPENTS.

• getErrorCode

  public int getErrorCode()

  Retrieves the value of the attribute XPRSconstants.ERRORCODE. The most recent Optimizer error number that occurred. This is useful to determine the precise error or warning that has occurred, after an Optimizer function has signalled an error by returning a non-zero value. The return value itself is not the error number. Refer to the section for a list of possible error numbers, the errors and warnings that they indicate, and advice on what they mean and how to resolve them. A short error message may be obtained using getLastError, and all messages may be intercepted using the user output callback function; see addCbMessage.

  Returns:

  Value of attribute XPRSconstants.ERRORCODE.

• getMIPInfeas

  public int getMIPInfeas()

  Retrieves the value of the attribute XPRSconstants.MIPINFEAS. Number of integer infeasibilities, including violations of special ordered sets, at the current node.

  This attribute is used in the following examples:

  • AddMipSol
  • Knapsack

  Returns:

  Value of attribute XPRSconstants.MIPINFEAS.

• getPresolveState

  public int getPresolveState()

  Retrieves the value of the attribute XPRSconstants.PRESOLVESTATE. Problem status as a bit map. (Values are from the enumeration XPRSenumerations.PresolveState)

  Returns:

  Value of attribute XPRSconstants.PRESOLVESTATE.

• getParentNode

  public int getParentNode()

  Retrieves the value of the attribute XPRSconstants.PARENTNODE. The parent node of the current node in the tree search.

  Returns:

  Value of attribute XPRSconstants.PARENTNODE.

• getNameLength

  public int getNameLength()

  Retrieves the value of the attribute XPRSconstants.NAMELENGTH. The length (in 8 character units) of row and column names in the matrix. To allocate a character array to store names, you must allow 8*NAMELENGTH+1 characters per name (the +1 allows for the string terminator character).

  Returns:

  Value of attribute XPRSconstants.NAMELENGTH.

• getQElems

  public int getQElems()

  Retrieves the value of the attribute XPRSconstants.QELEMS. Number of quadratic non-zeros in the objective.

  Returns:

  Value of attribute XPRSconstants.QELEMS.

• getNumIIS

  public int getNumIIS()

  Retrieves the value of the attribute XPRSconstants.NUMIIS. Number of IISs found. You should first query the IISSOLSTATUS attribute to make sure that the IIS procedure terminated successfully.

  Returns:

  Value of attribute XPRSconstants.NUMIIS.

• getMIPEnts

  public int getMIPEnts()

  Retrieves the value of the attribute XPRSconstants.MIPENTS. Number of MIP entities (i.e. binary, integer, semi-continuous, partial integer, and semi-continuous integer variables) but excluding the number of special ordered sets.

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • Repair

  Returns:

  Value of attribute XPRSconstants.MIPENTS.

• getBranchVar

  public int getBranchVar()

  Retrieves the value of the attribute XPRSconstants.BRANCHVAR. The branching variable at a node of the Branch and Bound tree.

  Returns:

  Value of attribute XPRSconstants.BRANCHVAR.

• getMIPThreadID

  public int getMIPThreadID()

  Retrieves the value of the attribute XPRSconstants.MIPTHREADID. The ID for the MIP thread.

  This attribute is used in the following examples:

  • MostViolated

  Returns:

  Value of attribute XPRSconstants.MIPTHREADID.

• getAlgorithm

  public int getAlgorithm()

  Retrieves the value of the attribute XPRSconstants.ALGORITHM. The algorithm the optimizer currently is running / was running just before completition.

  Returns:

  Value of attribute XPRSconstants.ALGORITHM.

• getCrossoverIter

  public int getCrossoverIter()

  Retrieves the value of the attribute XPRSconstants.CROSSOVERITER. Number of simplex iterations performed in crossover.

  Returns:

  Value of attribute XPRSconstants.CROSSOVERITER.

• getSolStatus

  public XPRSenumerations.SolStatus getSolStatus()

  Retrieves the value of the attribute XPRSconstants.SOLSTATUS. Status of the solution of the last problem solved with optimize. (Values are from the enumeration XPRSenumerations.SolStatus)

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • GoalProg
  • Knapsack
  • LoadLP
  • MipSolEnum
  • MipSolPool
  • MostViolated
  • SaveSol
  • TSP
  • Tableau
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.SOLSTATUS.

• getOriginalRows

  public int getOriginalRows()

  Retrieves the value of the attribute XPRSconstants.ORIGINALROWS. Number of rows (i.e. constraints) in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALROWS.

• getCallbackCount_OptNode

  public int getCallbackCount_OptNode()

  Retrieves the value of the attribute XPRSconstants.CALLBACKCOUNT_OPTNODE. This attribute counts the number of times the optimal node callback set by addCbOptnode has been called for the current node, including the current callback call. The value of this attribute should only be used from within the optimal node callback.

  This attribute is used in the following examples:

  • AddMipSol

  Returns:

  Value of attribute XPRSconstants.CALLBACKCOUNT_OPTNODE.

• getCallbackCount_CutMgr

  public int getCallbackCount_CutMgr()

  Retrieves the value of the attribute XPRSconstants.CALLBACKCOUNT_CUTMGR. This attribute counts the number of times the cut manager callback set by addCbCutmgr has been called for the current node, including the current callback call. The value of this attribute should only be used from within the cut manager callback.

  Returns:

  Value of attribute XPRSconstants.CALLBACKCOUNT_CUTMGR.

• getSystemMemory

  public long getSystemMemory()

  Retrieves the value of the attribute XPRSconstants.SYSTEMMEMORY. The amount of non problem specific memory used by the solver.

  Returns:

  Value of attribute XPRSconstants.SYSTEMMEMORY.

• getOriginalQElems

  public int getOriginalQElems()

  Retrieves the value of the attribute XPRSconstants.ORIGINALQELEMS. Number of quadratic non-zeros in the original objective before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALQELEMS.

• getMaxProbNameLength

  public int getMaxProbNameLength()

  Retrieves the value of the attribute XPRSconstants.MAXPROBNAMELENGTH. Maximum size of the problem name and also the maximum allowed length of the file or path string for any function that accepts such an argument (not including the null terminator).

  Returns:

  Value of attribute XPRSconstants.MAXPROBNAMELENGTH.

• getStopStatus

  public int getStopStatus()

  Retrieves the value of the attribute XPRSconstants.STOPSTATUS. Status of the optimization process.

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • GoalProg
  • Knapsack
  • LoadLP
  • MipSolEnum
  • MipSolPool
  • MostViolated
  • SaveSol
  • TSP
  • Tableau
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.STOPSTATUS.

• getOriginalMIPEnts

  public int getOriginalMIPEnts()

  Retrieves the value of the attribute XPRSconstants.ORIGINALMIPENTS. Number of MIP entities (i.e. binary, integer, semi-continuous, partial integer, and semi-continuous integer variables) but excluding the number of special ordered sets in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALMIPENTS.

• getOriginalSets

  public int getOriginalSets()

  Retrieves the value of the attribute XPRSconstants.ORIGINALSETS. Number of special ordered sets in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALSETS.

• getOriginalSetMembers

  public long getOriginalSetMembers()

  Retrieves the value of the attribute XPRSconstants.ORIGINALSETMEMBERS. Number of variables within special ordered sets (set members) in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALSETMEMBERS.

• getSpareSets

  public int getSpareSets()

  Retrieves the value of the attribute XPRSconstants.SPARESETS. Number of spare sets in the matrix.

  Returns:

  Value of attribute XPRSconstants.SPARESETS.

• getSpareSetElems

  public long getSpareSetElems()

  Retrieves the value of the attribute XPRSconstants.SPARESETELEMS. Number of spare set elements in the matrix.

  Returns:

  Value of attribute XPRSconstants.SPARESETELEMS.

• getChecksOnMaxTime

  public int getChecksOnMaxTime()

  Retrieves the value of the attribute XPRSconstants.CHECKSONMAXTIME. This attribute is used to set the value of the MAXCHECKSONMAXTIME control. Its value is the number of times the optimizer checked the MAXTIME criterion during the last call to the optimization routine mipOptimize. If a run terminates on the MAXTIME criterion then the attribute is the negative of the number of times the optimizer checked the MAXTIME criterion up to and including the check when the termination was activated. Note that the attribute is set to zero at the beginning of each call to an optimization routine.

  Returns:

  Value of attribute XPRSconstants.CHECKSONMAXTIME.

• getChecksOnMaxCutTime

  public int getChecksOnMaxCutTime()

  Retrieves the value of the attribute XPRSconstants.CHECKSONMAXCUTTIME. This attribute is used to set the value of the MAXCHECKSONMAXCUTTIME control. Its value is the number of times the optimizer checked the MAXCUTTIME criterion during the last call to the optimization routine mipOptimize. If a run terminates cutting operations on the MAXCUTTIME criterion then the attribute is the negative of the number of times the optimizer checked the MAXCUTTIME criterion up to and including the check when the termination was activated. Note that the attribute is set to zero at the beginning of each call to an optimization routine.

  Returns:

  Value of attribute XPRSconstants.CHECKSONMAXCUTTIME.

• getOriginalCols

  public int getOriginalCols()

  Retrieves the value of the attribute XPRSconstants.ORIGINALCOLS. Number of columns (i.e. variables) in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALCOLS.

• getQCElems

  public int getQCElems()

  Retrieves the value of the attribute XPRSconstants.QCELEMS. Number of quadratic row coefficients in the matrix.

  Returns:

  Value of attribute XPRSconstants.QCELEMS.

• getQConstraints

  public int getQConstraints()

  Retrieves the value of the attribute XPRSconstants.QCONSTRAINTS. Number of rows with quadratic coefficients in the matrix.

  Returns:

  Value of attribute XPRSconstants.QCONSTRAINTS.

• getOriginalQCElems

  public int getOriginalQCElems()

  Retrieves the value of the attribute XPRSconstants.ORIGINALQCELEMS. Number of quadratic row coefficients in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALQCELEMS.

• getOriginalQConstraints

  public int getOriginalQConstraints()

  Retrieves the value of the attribute XPRSconstants.ORIGINALQCONSTRAINTS. Number of rows with quadratic coefficients in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALQCONSTRAINTS.

• getPeakTotalTreeMemoryUsage

  public int getPeakTotalTreeMemoryUsage()

  Retrieves the value of the attribute XPRSconstants.PEAKTOTALTREEMEMORYUSAGE. The peak size, in megabytes, that the branch-and-bound search tree reached during the solve. Note that this value will include the uncompressed size of any compressed data and the size of any data saved to the tree file.

  Returns:

  Value of attribute XPRSconstants.PEAKTOTALTREEMEMORYUSAGE.

• getCurrentNode

  public int getCurrentNode()

  Retrieves the value of the attribute XPRSconstants.CURRENTNODE. The unique identifier of the current node in the tree search.

  This attribute is used in the following examples:

  • Knapsack
  • RoundInt
  • SaveSol

  Returns:

  Value of attribute XPRSconstants.CURRENTNODE.

• getTreeMemoryUsage

  public int getTreeMemoryUsage()

  Retrieves the value of the attribute XPRSconstants.TREEMEMORYUSAGE. The amount of physical memory, in megabytes, currently being used to store the branch-and-bound search tree.

  Returns:

  Value of attribute XPRSconstants.TREEMEMORYUSAGE.

• getTreeFileSize

  public int getTreeFileSize()

  Retrieves the value of the attribute XPRSconstants.TREEFILESIZE. The allocated size of the tree file, in megabytes. Because data can be removed from the tree file during the branch and bound search, the size of the tree file is usually greater than the amount of data currently within it (represented by the TREEFILEUSAGE attribute).

  Returns:

  Value of attribute XPRSconstants.TREEFILESIZE.

• getTreeFileUsage

  public int getTreeFileUsage()

  Retrieves the value of the attribute XPRSconstants.TREEFILEUSAGE. The number of megabytes of data from the branch-and-bound tree that have been saved to the tree file. Note that the actual allocated size of the tree file (represented by the TREEFILESIZE attribute) may be greater than this value.

  Returns:

  Value of attribute XPRSconstants.TREEFILEUSAGE.

• getIndicators

  public int getIndicators()

  Retrieves the value of the attribute XPRSconstants.INDICATORS. Number of indicator constrains in the problem.

  Returns:

  Value of attribute XPRSconstants.INDICATORS.

• getOriginalIndicators

  public int getOriginalIndicators()

  Retrieves the value of the attribute XPRSconstants.ORIGINALINDICATORS. Number of indicator constraints in the original matrix before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALINDICATORS.

• getCoresPerCPUDetected

  public int getCoresPerCPUDetected()

  Retrieves the value of the attribute XPRSconstants.CORESPERCPUDETECTED. Number of logical cores per CPU unit detected by the optimizer, which is the number of threads each CPU can execute.

  Returns:

  Value of attribute XPRSconstants.CORESPERCPUDETECTED.

• getCPUsDetected

  public int getCPUsDetected()

  Retrieves the value of the attribute XPRSconstants.CPUSDETECTED. Number of CPU units detected by the optimizer.

  Returns:

  Value of attribute XPRSconstants.CPUSDETECTED.

• getCoresDetected

  public int getCoresDetected()

  Retrieves the value of the attribute XPRSconstants.CORESDETECTED. Number of logical cores detected by the optimizer, which is the total number of threads the hardware can execute across all CPUs.

  This attribute is used in the following examples:

  • MostViolated

  Returns:

  Value of attribute XPRSconstants.CORESDETECTED.

• getPhysicalCoresDetected

  public int getPhysicalCoresDetected()

  Retrieves the value of the attribute XPRSconstants.PHYSICALCORESDETECTED. The total number of physical cores across all CPUs detected by the optimizer.

  Returns:

  Value of attribute XPRSconstants.PHYSICALCORESDETECTED.

• getPhysicalCoresPerCPUDetected

  public int getPhysicalCoresPerCPUDetected()

  Retrieves the value of the attribute XPRSconstants.PHYSICALCORESPERCPUDETECTED. The number of physical cores per CPU detected by the optimizer.

  Returns:

  Value of attribute XPRSconstants.PHYSICALCORESPERCPUDETECTED.

• getOptimizeTypeUsed

  public XPRSenumerations.OptimizeType getOptimizeTypeUsed()

  Retrieves the value of the attribute XPRSconstants.OPTIMIZETYPEUSED. The type of solver used in the last call to optimize, mipOptimize, lpOptimize or nlpOptimize. (Values are from the enumeration XPRSenumerations.OptimizeType)

  Returns:

  Value of attribute XPRSconstants.OPTIMIZETYPEUSED.

• getBarSing

  public int getBarSing()

  Retrieves the value of the attribute XPRSconstants.BARSING. Number of linearly dependent binding constraints at the optimal barrier solution. These results in singularities in the Cholesky decomposition during the barrier that may cause numerical troubles. Larger dependence means more chance for numerical difficulties.

  Returns:

  Value of attribute XPRSconstants.BARSING.

• getBarSingR

  public int getBarSingR()

  Retrieves the value of the attribute XPRSconstants.BARSINGR. Regularized number of linearly dependent binding constraints at the optimal barrier solution. These results in singularities in the Cholesky decomposition during the barrier that may cause numerical troubles. Larger dependence means more chance for numerical difficulties.

  Returns:

  Value of attribute XPRSconstants.BARSINGR.

• getPresolveIndex

  public int getPresolveIndex()

  Retrieves the value of the attribute XPRSconstants.PRESOLVEINDEX. Presolve: The row or column index on which presolve detected a problem to be infeasible or unbounded.

  Returns:

  Value of attribute XPRSconstants.PRESOLVEINDEX.

• getCurrentMemory

  public long getCurrentMemory()

  Retrieves the value of the attribute XPRSconstants.CURRENTMEMORY. The amount of dynamically allocated heap memory by the problem being solved.

  Returns:

  Value of attribute XPRSconstants.CURRENTMEMORY.

• getPeakMemory

  public long getPeakMemory()

  Retrieves the value of the attribute XPRSconstants.PEAKMEMORY. An estimate of the peak amount of dynamically allocated heap memory by the problem.

  Returns:

  Value of attribute XPRSconstants.PEAKMEMORY.

• getCones

  public int getCones()

  Retrieves the value of the attribute XPRSconstants.CONES. Number of second order and rotated second order cones in the problem.

  Returns:

  Value of attribute XPRSconstants.CONES.

• getConeElems

  public int getConeElems()

  Retrieves the value of the attribute XPRSconstants.CONEELEMS. Number of second order cone coefficients in the problem.

  Returns:

  Value of attribute XPRSconstants.CONEELEMS.

• getTotalMemory

  public long getTotalMemory()

  Retrieves the value of the attribute XPRSconstants.TOTALMEMORY. The amount of dynamically allocated heap memory by the optimizer, including all problems currently exsisting.

  Returns:

  Value of attribute XPRSconstants.TOTALMEMORY.

• getAvailableMemory

  public long getAvailableMemory()

  Retrieves the value of the attribute XPRSconstants.AVAILABLEMEMORY. The amount of heap memory detected by Xpress as free.

  Returns:

  Value of attribute XPRSconstants.AVAILABLEMEMORY.

• getPwlCons

  public int getPwlCons()

  Retrieves the value of the attribute XPRSconstants.PWLCONS. Number of piecewise linear constraints in the problem.

  Returns:

  Value of attribute XPRSconstants.PWLCONS.

• getPwlPoints

  public long getPwlPoints()

  Retrieves the value of the attribute XPRSconstants.PWLPOINTS. Number of breakpoints of piecewise linear constraints in the problem.

  Returns:

  Value of attribute XPRSconstants.PWLPOINTS.

• getGenCons

  public int getGenCons()

  Retrieves the value of the attribute XPRSconstants.GENCONS. The number of general constraints (i.e. MIN/MAX/AND/OR/ABS constraints) in the problem.

  Returns:

  Value of attribute XPRSconstants.GENCONS.

• getGenConCols

  public long getGenConCols()

  Retrieves the value of the attribute XPRSconstants.GENCONCOLS. Number of input variables in general constraints (i.e. MIN/MAX/AND/OR/ABS constraints) in the problem.

  Returns:

  Value of attribute XPRSconstants.GENCONCOLS.

• getGenConVals

  public long getGenConVals()

  Retrieves the value of the attribute XPRSconstants.GENCONVALS. Number of constant values in general constraints (MIN/MAX constraints) in the problem.

  Returns:

  Value of attribute XPRSconstants.GENCONVALS.

• getTreeRestarts

  public int getTreeRestarts()

  Retrieves the value of the attribute XPRSconstants.TREERESTARTS. Number of in-tree restarts performed.

  Returns:

  Value of attribute XPRSconstants.TREERESTARTS.

• getOriginalPwls

  public int getOriginalPwls()

  Retrieves the value of the attribute XPRSconstants.ORIGINALPWLS. Number of piecewise linear constraints in the original problem before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALPWLS.

• getOriginalPwlpoints

  public long getOriginalPwlpoints()

  Retrieves the value of the attribute XPRSconstants.ORIGINALPWLPOINTS. Number of breakpoints of piecewise linear constraints in the original problem before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALPWLPOINTS.

• getOriginalGencons

  public int getOriginalGencons()

  Retrieves the value of the attribute XPRSconstants.ORIGINALGENCONS. Number of general constraints in the original problem before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALGENCONS.

• getOriginalGenconCols

  public long getOriginalGenconCols()

  Retrieves the value of the attribute XPRSconstants.ORIGINALGENCONCOLS. Number of input variables in general constraints in the original problem before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALGENCONCOLS.

• getOriginalGenconVals

  public long getOriginalGenconVals()

  Retrieves the value of the attribute XPRSconstants.ORIGINALGENCONVALS. Number of constant values in general constraints in the original problem before presolving.

  Returns:

  Value of attribute XPRSconstants.ORIGINALGENCONVALS.

• getComputeExecutions

  public int getComputeExecutions()

  Retrieves the value of the attribute XPRSconstants.COMPUTEEXECUTIONS. The number of solves executed on a compute server.

  Returns:

  Value of attribute XPRSconstants.COMPUTEEXECUTIONS.

• getMemoryLimitDetected

  public long getMemoryLimitDetected()

  Retrieves the value of the attribute XPRSconstants.MEMORYLIMITDETECTED. The detected amount of memory accessible to the solver process, in megabytes. This is the minimum of physical memory, virtual memory limitations, and detected container limitations (Linux only).

  Returns:

  Value of attribute XPRSconstants.MEMORYLIMITDETECTED.

• getRestarts

  public int getRestarts()

  Retrieves the value of the attribute XPRSconstants.RESTARTS. Total number of restarts performed.

  Returns:

  Value of attribute XPRSconstants.RESTARTS.

• getSolveStatus

  public XPRSenumerations.SolveStatus getSolveStatus()

  Retrieves the value of the attribute XPRSconstants.SOLVESTATUS. Status of the solve of the last problem solved with optimize. (Values are from the enumeration XPRSenumerations.SolveStatus)

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • GoalProg
  • Knapsack
  • LoadLP
  • MipSolEnum
  • MipSolPool
  • MostViolated
  • SaveSol
  • TSP
  • Tableau
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.SOLVESTATUS.

• getGlobalBoundingboxApplied

  public int getGlobalBoundingboxApplied()

  Retrieves the value of the attribute XPRSconstants.GLOBALBOUNDINGBOXAPPLIED. Whether a bounding box equal to the absolute value of the GLOBALBOUNDINGBOX control was applied to the problem after the initial solve came back infeasible and if so, to which variables.

  Returns:

  Value of attribute XPRSconstants.GLOBALBOUNDINGBOXAPPLIED.

• getObjectives

  public int getObjectives()

  Retrieves the value of the attribute XPRSconstants.OBJECTIVES. Number of objectives in the problem.

  Returns:

  Value of attribute XPRSconstants.OBJECTIVES.

• getSolvedObjs

  public int getSolvedObjs()

  Retrieves the value of the attribute XPRSconstants.SOLVEDOBJS. Number of objectives that have been solved so far during a multi-objective solve.

  Returns:

  Value of attribute XPRSconstants.SOLVEDOBJS.

• getObjsToSolve

  public int getObjsToSolve()

  Retrieves the value of the attribute XPRSconstants.OBJSTOSOLVE. Number of objectives that will be solved during the current multi-objective solve.

  Returns:

  Value of attribute XPRSconstants.OBJSTOSOLVE.

• getGlobalNLPInfeas

  public int getGlobalNLPInfeas()

  Retrieves the value of the attribute XPRSconstants.GLOBALNLPINFEAS. Number of nonlinear infeasibilities at the current node of a global solve, measured as the number of violated atomic formulas.

  Returns:

  Value of attribute XPRSconstants.GLOBALNLPINFEAS.

• getIISSolStatus

  public XPRSenumerations.IISSolStatus getIISSolStatus()

  Retrieves the value of the attribute XPRSconstants.IISSOLSTATUS. IIS solution status. (Values are from the enumeration XPRSenumerations.IISSolStatus)

  This attribute is used in the following examples:

  • IISExample

  Returns:

  Value of attribute XPRSconstants.IISSOLSTATUS.

• getInputRows

  public int getInputRows()

  Retrieves the value of the attribute XPRSconstants.INPUTROWS. Number of rows (i.e. constraints) in the original matrix before nonlinear reformulations.

  This attribute is used in the following examples:

  • Repair

  Returns:

  Value of attribute XPRSconstants.INPUTROWS.

• getInputCols

  public int getInputCols()

  Retrieves the value of the attribute XPRSconstants.INPUTCOLS. Number of columns (i.e. variables) in the original matrix before nonlinear reformulations.

  This attribute is used in the following examples:

  • Repair

  Returns:

  Value of attribute XPRSconstants.INPUTCOLS.

• getMIPSolTime

  public double getMIPSolTime()

  Retrieves the value of the attribute XPRSconstants.MIPSOLTIME. Time at which the last integer feasible solution was found.

  Returns:

  Value of attribute XPRSconstants.MIPSOLTIME.

• getTime

  public double getTime()

  Retrieves the value of the attribute XPRSconstants.TIME. Time spent solving the problem as measured by the optimizer.

  Returns:

  Value of attribute XPRSconstants.TIME.

• getLPObjVal

  public double getLPObjVal()

  Retrieves the value of the attribute XPRSconstants.LPOBJVAL. Value of the objective function of the last LP solved.

  This attribute is used in the following examples:

  • Knapsack
  • LoadLP
  • RoundInt
  • Tableau

  Returns:

  Value of attribute XPRSconstants.LPOBJVAL.

• getSumPrimalInf

  public double getSumPrimalInf()

  Retrieves the value of the attribute XPRSconstants.SUMPRIMALINF. Scaled sum of primal infeasibilities.

  Returns:

  Value of attribute XPRSconstants.SUMPRIMALINF.

• getMIPObjVal

  public double getMIPObjVal()

  Retrieves the value of the attribute XPRSconstants.MIPOBJVAL. Objective function value of the last integer solution found.

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • Knapsack
  • MipSolEnum
  • MipSolPool
  • MostViolated
  • SaveSol
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.MIPOBJVAL.

• getBestBound

  public double getBestBound()

  Retrieves the value of the attribute XPRSconstants.BESTBOUND. Value of the best bound determined so far by the MIP search.

  This attribute is used in the following examples:

  • SaveSol

  Returns:

  Value of attribute XPRSconstants.BESTBOUND.

• getObjRHS

  public double getObjRHS()

  Retrieves the value of the attribute XPRSconstants.OBJRHS. Fixed part of the objective function.

  Returns:

  Value of attribute XPRSconstants.OBJRHS.

• getMIPBestObjVal

  public double getMIPBestObjVal()

  Retrieves the value of the attribute XPRSconstants.MIPBESTOBJVAL. Objective function value of the best integer solution found.

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • Knapsack
  • MipSolEnum
  • MipSolPool
  • MostViolated
  • SaveSol
  • TSP
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.MIPBESTOBJVAL.

• getOBJSense

  public double getOBJSense()

  Retrieves the value of the attribute XPRSconstants.OBJSENSE. Sense of the optimization being performed.

  Returns:

  Value of attribute XPRSconstants.OBJSENSE.

• getBranchValue

  public double getBranchValue()

  Retrieves the value of the attribute XPRSconstants.BRANCHVALUE. The value of the branching variable at a node of the Branch and Bound tree.

  Returns:

  Value of attribute XPRSconstants.BRANCHVALUE.

• getPenaltyValue

  public double getPenaltyValue()

  Retrieves the value of the attribute XPRSconstants.PENALTYVALUE. The weighted sum of violations in the solution to the relaxed problem identified by the infeasibility repair function.

  Returns:

  Value of attribute XPRSconstants.PENALTYVALUE.

• getCurrMipCutOff

  public double getCurrMipCutOff()

  Retrieves the value of the attribute XPRSconstants.CURRMIPCUTOFF. The current MIP cut off.

  Returns:

  Value of attribute XPRSconstants.CURRMIPCUTOFF.

• getBarCondA

  public double getBarCondA()

  Retrieves the value of the attribute XPRSconstants.BARCONDA. Absolute condition measure calculated in the last iteration of the barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARCONDA.

• getBarCondD

  public double getBarCondD()

  Retrieves the value of the attribute XPRSconstants.BARCONDD. Condition measure calculated in the last iteration of the barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARCONDD.

• getMaxAbsPrimalInfeas

  public double getMaxAbsPrimalInfeas()

  Retrieves the value of the attribute XPRSconstants.MAXABSPRIMALINFEAS. Maximum calculated absolute primal infeasibility in the unscaled original problem.

  Returns:

  Value of attribute XPRSconstants.MAXABSPRIMALINFEAS.

• getMaxRelPrimalInfeas

  public double getMaxRelPrimalInfeas()

  Retrieves the value of the attribute XPRSconstants.MAXRELPRIMALINFEAS. Maximum calculated relative primal infeasibility in the unscaled original problem.

  Returns:

  Value of attribute XPRSconstants.MAXRELPRIMALINFEAS.

• getMaxAbsDualInfeas

  public double getMaxAbsDualInfeas()

  Retrieves the value of the attribute XPRSconstants.MAXABSDUALINFEAS. Maximum calculated absolute dual infeasibility in the unscaled original problem.

  Returns:

  Value of attribute XPRSconstants.MAXABSDUALINFEAS.

• getMaxRelDualInfeas

  public double getMaxRelDualInfeas()

  Retrieves the value of the attribute XPRSconstants.MAXRELDUALINFEAS. Maximum calculated relative dual infeasibility in the unscaled original problem.

  Returns:

  Value of attribute XPRSconstants.MAXRELDUALINFEAS.

• getPrimalDualIntegral

  public double getPrimalDualIntegral()

  Retrieves the value of the attribute XPRSconstants.PRIMALDUALINTEGRAL. Value of the primal-dual integral.

  Returns:

  Value of attribute XPRSconstants.PRIMALDUALINTEGRAL.

• getMaxMipInfeas

  public double getMaxMipInfeas()

  Retrieves the value of the attribute XPRSconstants.MAXMIPINFEAS. Maximum integer fractionality in the solution.

  Returns:

  Value of attribute XPRSconstants.MAXMIPINFEAS.

• getAttentionLevel

  public double getAttentionLevel()

  Retrieves the value of the attribute XPRSconstants.ATTENTIONLEVEL. A measure between 0 and 1 for how numerically unstable the problem is. The attention level is based on a weighted combination of the number of basis condition numbers exceeding certain thresholds. It considers all nodes sampled by MIPKAPPAFREQ, with a setting of 1 being the most frequent sampling rate. The higher the attention level, the worse conditioned is the problem.

  Returns:

  Value of attribute XPRSconstants.ATTENTIONLEVEL.

• getMaxKappa

  public double getMaxKappa()

  Retrieves the value of the attribute XPRSconstants.MAXKAPPA. Largest basis condition number (also known as kappa) calculated through all nodes sampled by MIPKAPPAFREQ.

  Returns:

  Value of attribute XPRSconstants.MAXKAPPA.

• getTreeCompletion

  public double getTreeCompletion()

  Retrieves the value of the attribute XPRSconstants.TREECOMPLETION. Estimation of the relative completion of the search tree as fraction between 0 and 1. Its accuracy mainly depends on the level of degeneracy of a problem and the balancedness of the search tree.

  Returns:

  Value of attribute XPRSconstants.TREECOMPLETION.

• getPredictedAttLevel

  public double getPredictedAttLevel()

  Retrieves the value of the attribute XPRSconstants.PREDICTEDATTLEVEL. A measure between 0 and 1 to predict how numerically unstable the current MIP solve can be expected to be. After the root LP solve, a machine learning model is used to predict the actual ATTENTIONLEVEL which will only be computed if MIPKAPPAFREQ is set to a nonzero value. If the predicted attention level exceeds a value of 0.1, a message will be printed to the log.

  Returns:

  Value of attribute XPRSconstants.PREDICTEDATTLEVEL.

• getObservedPrimalIntegral

  public double getObservedPrimalIntegral()

  Retrieves the value of the attribute XPRSconstants.OBSERVEDPRIMALINTEGRAL. Value of the (observed) primal integral.

  Returns:

  Value of attribute XPRSconstants.OBSERVEDPRIMALINTEGRAL.

• getCpiScaleFactor

  public double getCpiScaleFactor()

  Retrieves the value of the attribute XPRSconstants.CPISCALEFACTOR. scale factor from primal integral computation.

  Returns:

  Value of attribute XPRSconstants.CPISCALEFACTOR.

• getObjVal

  public double getObjVal()

  Retrieves the value of the attribute XPRSconstants.OBJVAL. Value of the objective function of the last problem solved with optimize.

  This attribute is used in the following examples:

  • AddMipSol
  • FixBV
  • GlobalObjectiveParametrics
  • GlobalRHSParametrics
  • Knapsack
  • LoadLP
  • MipSolEnum
  • MipSolPool
  • MostViolated
  • Polygon
  • PolygonMap
  • PolygonMapDelta
  • PolygonMultiMap
  • PolygonMultiMapDelta
  • PolygonVecMap
  • PolygonVecMapDelta
  • SaveSol
  • Trimloss

  Returns:

  Value of attribute XPRSconstants.OBJVAL.

• getMatrixName

  public java.lang.String getMatrixName()

  Retrieves the value of the attribute XPRSconstants.MATRIXNAME. The matrix name.

  Returns:

  Value of attribute XPRSconstants.MATRIXNAME.

• getBoundName

  public java.lang.String getBoundName()

  Retrieves the value of the attribute XPRSconstants.BOUNDNAME. Active bound name.

  Returns:

  Value of attribute XPRSconstants.BOUNDNAME.

• getObjName

  @Deprecated
  public java.lang.String getObjName()

  Deprecated.

  since 41.00
  Retrieves the value of the attribute XPRSconstants.OBJNAME.

  Returns:

  Value of attribute XPRSconstants.OBJNAME.

• getRHSName

  public java.lang.String getRHSName()

  Retrieves the value of the attribute XPRSconstants.RHSNAME. Active right hand side name.

  Returns:

  Value of attribute XPRSconstants.RHSNAME.

• getRangeName

  public java.lang.String getRangeName()

  Retrieves the value of the attribute XPRSconstants.RANGENAME. Active range name.

  Returns:

  Value of attribute XPRSconstants.RANGENAME.

• getXpressVersion

  public java.lang.String getXpressVersion()

  Retrieves the value of the attribute XPRSconstants.XPRESSVERSION. The Xpress version number.

  Returns:

  Value of attribute XPRSconstants.XPRESSVERSION.

• getUUID

  public java.lang.String getUUID()

  Retrieves the value of the attribute XPRSconstants.UUID. Universally Unique Identifier for the problem instance.

  Returns:

  Value of attribute XPRSconstants.UUID.

• getBarPrimalObj

  public double getBarPrimalObj()

  Retrieves the value of the attribute XPRSconstants.BARPRIMALOBJ. Primal objective value calculated by the Newton barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARPRIMALOBJ.

• getBarDualObj

  public double getBarDualObj()

  Retrieves the value of the attribute XPRSconstants.BARDUALOBJ. Dual objective value calculated by the Newton barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARDUALOBJ.

• getBarPrimalInf

  public double getBarPrimalInf()

  Retrieves the value of the attribute XPRSconstants.BARPRIMALINF. Sum of the primal infeasibilities for the Newton barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARPRIMALINF.

• getBarDualInf

  public double getBarDualInf()

  Retrieves the value of the attribute XPRSconstants.BARDUALINF. Sum of the dual infeasibilities for the Newton barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARDUALINF.

• getBarCGap

  public double getBarCGap()

  Retrieves the value of the attribute XPRSconstants.BARCGAP. Convergence criterion for the Newton barrier algorithm.

  Returns:

  Value of attribute XPRSconstants.BARCGAP.

• getBarIter

  public int getBarIter()

  Retrieves the value of the attribute XPRSconstants.BARITER. Number of Newton barrier iterations.

  Returns:

  Value of attribute XPRSconstants.BARITER.

• getBarAASize

  public long getBarAASize()

  Retrieves the value of the attribute XPRSconstants.BARAASIZE. Number of nonzeros in AA ^T.

  Returns:

  Value of attribute XPRSconstants.BARAASIZE.

• getBarLSize

  public long getBarLSize()

  Retrieves the value of the attribute XPRSconstants.BARLSIZE. Number of nonzeros in L resulting from the Cholesky factorization.

  Returns:

  Value of attribute XPRSconstants.BARLSIZE.

• getBarDenseCol

  public int getBarDenseCol()

  Retrieves the value of the attribute XPRSconstants.BARDENSECOL. Number of dense columns found in the matrix.

  Returns:

  Value of attribute XPRSconstants.BARDENSECOL.

• getBarCrossover

  public int getBarCrossover()

  Retrieves the value of the attribute XPRSconstants.BARCROSSOVER. Indicates whether or not the basis crossover phase has been entered.

  Returns:

  Value of attribute XPRSconstants.BARCROSSOVER.

• getNlpOptTime

  public double getNlpOptTime()

  Retrieves the value of the attribute XPRSconstants.NLPOPTTIME. Time spent in optimization

  Returns:

  Value of attribute XPRSconstants.NLPOPTTIME.

• getNlpValidationIndex_A

  public double getNlpValidationIndex_A()

  Retrieves the value of the attribute XPRSconstants.NLPVALIDATIONINDEX_A. Absolute validation index

  Returns:

  Value of attribute XPRSconstants.NLPVALIDATIONINDEX_A.

• getNlpValidationIndex_R

  public double getNlpValidationIndex_R()

  Retrieves the value of the attribute XPRSconstants.NLPVALIDATIONINDEX_R. Relative validation index

  Returns:

  Value of attribute XPRSconstants.NLPVALIDATIONINDEX_R.

• getNlpObjVal

  public double getNlpObjVal()

  Retrieves the value of the attribute XPRSconstants.NLPOBJVAL. Objective function value excluding any penalty costs

  Returns:

  Value of attribute XPRSconstants.NLPOBJVAL.

• getSlpErrorCosts

  public double getSlpErrorCosts()

  Retrieves the value of the attribute XPRSconstants.SLPERRORCOSTS. Total penalty costs in the solution

  Returns:

  Value of attribute XPRSconstants.SLPERRORCOSTS.

• getNlpOriginalRows

  public int getNlpOriginalRows()

  Retrieves the value of the attribute XPRSconstants.NLPORIGINALROWS. Number of model rows in the extended original problem

  Returns:

  Value of attribute XPRSconstants.NLPORIGINALROWS.

• getNlpOriginalCols

  public int getNlpOriginalCols()

  Retrieves the value of the attribute XPRSconstants.NLPORIGINALCOLS. Number of model columns in the extended original problem

  Returns:

  Value of attribute XPRSconstants.NLPORIGINALCOLS.

• getNlpUFs

  public int getNlpUFs()

  Retrieves the value of the attribute XPRSconstants.NLPUFS. Number of user functions

  Returns:

  Value of attribute XPRSconstants.NLPUFS.

• getNlpIfs

  public int getNlpIfs()

  Retrieves the value of the attribute XPRSconstants.NLPIFS. Number of internal functions

  Returns:

  Value of attribute XPRSconstants.NLPIFS.

• getNlpEqualsColumn

  public int getNlpEqualsColumn()

  Retrieves the value of the attribute XPRSconstants.NLPEQUALSCOLUMN. Index of the reserved "=" column

  Returns:

  Value of attribute XPRSconstants.NLPEQUALSCOLUMN.

• getNlpVariables

  public int getNlpVariables()

  Retrieves the value of the attribute XPRSconstants.NLPVARIABLES. Number of SLP variables

  Returns:

  Value of attribute XPRSconstants.NLPVARIABLES.

• getNlpImplicitVariables

  public int getNlpImplicitVariables()

  Retrieves the value of the attribute XPRSconstants.NLPIMPLICITVARIABLES. Number of SLP variables appearing only in coefficients

  Returns:

  Value of attribute XPRSconstants.NLPIMPLICITVARIABLES.

• getNonLinearConstraints

  public int getNonLinearConstraints()

  Retrieves the value of the attribute XPRSconstants.NONLINEARCONSTRAINTS. Number of nonlinear constraints in the problem

  Returns:

  Value of attribute XPRSconstants.NONLINEARCONSTRAINTS.

• getNlpUserFuncCalls

  public int getNlpUserFuncCalls()

  Retrieves the value of the attribute XPRSconstants.NLPUSERFUNCCALLS. Number of calls made to user functions

  Returns:

  Value of attribute XPRSconstants.NLPUSERFUNCCALLS.

• getNlpUseDerivatives

  public int getNlpUseDerivatives()

  Retrieves the value of the attribute XPRSconstants.NLPUSEDERIVATIVES. Indicates whether numeric or analytic derivatives were used to create the linear approximations and solve the problem

  Returns:

  Value of attribute XPRSconstants.NLPUSEDERIVATIVES.

• getNlpKeepBestIter

  public int getNlpKeepBestIter()

  Retrieves the value of the attribute XPRSconstants.NLPKEEPBESTITER. The iteration in which the returned solution has been found.

  Returns:

  Value of attribute XPRSconstants.NLPKEEPBESTITER.

• getNlpStatus

  public int getNlpStatus()

  Retrieves the value of the attribute XPRSconstants.NLPSTATUS. Bitmap holding the problem convergence status

  Returns:

  Value of attribute XPRSconstants.NLPSTATUS.

• getLocalSolverSelected

  public int getLocalSolverSelected()

  Retrieves the value of the attribute XPRSconstants.LOCALSOLVERSELECTED.

  Returns:

  Value of attribute XPRSconstants.LOCALSOLVERSELECTED.

• getNlpModelRows

  public int getNlpModelRows()

  Retrieves the value of the attribute XPRSconstants.NLPMODELROWS. Number of model rows in the problem

  Returns:

  Value of attribute XPRSconstants.NLPMODELROWS.

• getNlpModelCols

  public int getNlpModelCols()

  Retrieves the value of the attribute XPRSconstants.NLPMODELCOLS. Number of model columns in the problem

  Returns:

  Value of attribute XPRSconstants.NLPMODELCOLS.

• getNlpJobID

  public int getNlpJobID()

  Retrieves the value of the attribute XPRSconstants.NLPJOBID. Unique identifier for the current job

  Returns:

  Value of attribute XPRSconstants.NLPJOBID.

• getNlpStopStatus

  public int getNlpStopStatus()

  Retrieves the value of the attribute XPRSconstants.NLPSTOPSTATUS. Status of the optimization process.

  Returns:

  Value of attribute XPRSconstants.NLPSTOPSTATUS.

• getNlpPresolveEliminations

  public int getNlpPresolveEliminations()

  Retrieves the value of the attribute XPRSconstants.NLPPRESOLVEELIMINATIONS. Number of SLP variables eliminated by XSLPpresolve

  Returns:

  Value of attribute XPRSconstants.NLPPRESOLVEELIMINATIONS.

• getSlpIter

  public int getSlpIter()

  Retrieves the value of the attribute XPRSconstants.SLPITER. SLP iteration count

  Returns:

  Value of attribute XPRSconstants.SLPITER.

• getSlpStatus

  public int getSlpStatus()

  Retrieves the value of the attribute XPRSconstants.SLPSTATUS. Bitmap holding the problem convergence status

  Returns:

  Value of attribute XPRSconstants.SLPSTATUS.

• getSlpUnConverged

  public int getSlpUnConverged()

  Retrieves the value of the attribute XPRSconstants.SLPUNCONVERGED. Number of unconverged values

  Returns:

  Value of attribute XPRSconstants.SLPUNCONVERGED.

• getSlpSbxConverged

  public int getSlpSbxConverged()

  Retrieves the value of the attribute XPRSconstants.SLPSBXCONVERGED. Number of step-bounded variables converged only on extended criteria

  Returns:

  Value of attribute XPRSconstants.SLPSBXCONVERGED.

• getSlpPenaltyDeltaRow

  public int getSlpPenaltyDeltaRow()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYDELTAROW. Index of equality row holding the penalties for delta vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYDELTAROW.

• getSlpPenaltyDeltaColumn

  public int getSlpPenaltyDeltaColumn()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYDELTACOLUMN. Index of column costing the penalty delta row

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYDELTACOLUMN.

• getSlpPenaltyErrorRow

  public int getSlpPenaltyErrorRow()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYERRORROW. Index of equality row holding the penalties for penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYERRORROW.

• getSlpPenaltyErrorColumn

  public int getSlpPenaltyErrorColumn()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYERRORCOLUMN. Index of column costing the penalty error row

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYERRORCOLUMN.

• getSlpCoefficients

  public int getSlpCoefficients()

  Retrieves the value of the attribute XPRSconstants.SLPCOEFFICIENTS. Number of nonlinear coefficients

  Returns:

  Value of attribute XPRSconstants.SLPCOEFFICIENTS.

• getSlpPenaltyDeltas

  public int getSlpPenaltyDeltas()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYDELTAS. Number of penalty delta vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYDELTAS.

• getSlpPenaltyErrors

  public int getSlpPenaltyErrors()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYERRORS. Number of penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYERRORS.

• getSlpPlusPenaltyErrors

  public int getSlpPlusPenaltyErrors()

  Retrieves the value of the attribute XPRSconstants.SLPPLUSPENALTYERRORS. Number of positive penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPPLUSPENALTYERRORS.

• getSlpMinusPenaltyErrors

  public int getSlpMinusPenaltyErrors()

  Retrieves the value of the attribute XPRSconstants.SLPMINUSPENALTYERRORS. Number of negative penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPMINUSPENALTYERRORS.

• getSlpUCConstrainedCount

  public int getSlpUCConstrainedCount()

  Retrieves the value of the attribute XPRSconstants.SLPUCCONSTRAINEDCOUNT. Number of unconverged variables with coefficients in constraining rows

  Returns:

  Value of attribute XPRSconstants.SLPUCCONSTRAINEDCOUNT.

• getSlpMipNodes

  public int getSlpMipNodes()

  Retrieves the value of the attribute XPRSconstants.SLPMIPNODES. Number of nodes explored in MISLP. This includes any nodes for which a non-linear solve has been carried out.

  Returns:

  Value of attribute XPRSconstants.SLPMIPNODES.

• getSlpMipIter

  public int getSlpMipIter()

  Retrieves the value of the attribute XPRSconstants.SLPMIPITER. Total number of SLP iterations in MISLP

  Returns:

  Value of attribute XPRSconstants.SLPMIPITER.

• getSlpTolSets

  public int getSlpTolSets()

  Retrieves the value of the attribute XPRSconstants.SLPTOLSETS. Number of tolerance sets.

  Returns:

  Value of attribute XPRSconstants.SLPTOLSETS.

• getSlpECFCount

  public int getSlpECFCount()

  Retrieves the value of the attribute XPRSconstants.SLPECFCOUNT. Number of infeasible constraints found at the point of linearization

  Returns:

  Value of attribute XPRSconstants.SLPECFCOUNT.

• getSlpDeltas

  public int getSlpDeltas()

  Retrieves the value of the attribute XPRSconstants.SLPDELTAS. Number of delta vectors created during augmentation

  Returns:

  Value of attribute XPRSconstants.SLPDELTAS.

• getSlpZeroesReset

  public int getSlpZeroesReset()

  Retrieves the value of the attribute XPRSconstants.SLPZEROESRESET. Number of placeholder entries set to zero

  Returns:

  Value of attribute XPRSconstants.SLPZEROESRESET.

• getSlpZeroesTotal

  public int getSlpZeroesTotal()

  Retrieves the value of the attribute XPRSconstants.SLPZEROESTOTAL. Number of potential zero placeholder entries

  Returns:

  Value of attribute XPRSconstants.SLPZEROESTOTAL.

• getSlpZeroesRetained

  public int getSlpZeroesRetained()

  Retrieves the value of the attribute XPRSconstants.SLPZEROESRETAINED. Number of potentially zero placeholders left untouched

  Returns:

  Value of attribute XPRSconstants.SLPZEROESRETAINED.

• getSlpNonConstantCoeffs

  public int getSlpNonConstantCoeffs()

  Retrieves the value of the attribute XPRSconstants.SLPNONCONSTANTCOEFFS. Number of coefficients in the augmented problem that might change between SLP iterations

  Returns:

  Value of attribute XPRSconstants.SLPNONCONSTANTCOEFFS.

• getSlpMipSols

  public int getSlpMipSols()

  Retrieves the value of the attribute XPRSconstants.SLPMIPSOLS. Number of integer solutions found in MISLP. This includes solutions found during the tree search or any heuristics.

  Returns:

  Value of attribute XPRSconstants.SLPMIPSOLS.

• getNlpValidationIndex_K

  public double getNlpValidationIndex_K()

  Retrieves the value of the attribute XPRSconstants.NLPVALIDATIONINDEX_K. Relative first order optimality validation index

  Returns:

  Value of attribute XPRSconstants.NLPVALIDATIONINDEX_K.

• getSlpCurrentDeltaCost

  public double getSlpCurrentDeltaCost()

  Retrieves the value of the attribute XPRSconstants.SLPCURRENTDELTACOST. Current value of penalty cost multiplier for penalty delta vectors

  Returns:

  Value of attribute XPRSconstants.SLPCURRENTDELTACOST.

• getSlpCurrentErrorCost

  public double getSlpCurrentErrorCost()

  Retrieves the value of the attribute XPRSconstants.SLPCURRENTERRORCOST. Current value of penalty cost multiplier for penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPCURRENTERRORCOST.

• getSlpPenaltyErrorTotal

  public double getSlpPenaltyErrorTotal()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYERRORTOTAL. Total activity of penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYERRORTOTAL.

• getSlpPenaltyErrorValue

  public double getSlpPenaltyErrorValue()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYERRORVALUE. Total penalty cost attributed to penalty error vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYERRORVALUE.

• getSlpPenaltyDeltaTotal

  public double getSlpPenaltyDeltaTotal()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYDELTATOTAL. Total activity of penalty delta vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYDELTATOTAL.

• getSlpPenaltyDeltaValue

  public double getSlpPenaltyDeltaValue()

  Retrieves the value of the attribute XPRSconstants.SLPPENALTYDELTAVALUE. Total penalty cost attributed to penalty delta vectors

  Returns:

  Value of attribute XPRSconstants.SLPPENALTYDELTAVALUE.