Package org.moeaframework.problem.LSMOP

Class LSMOP

java.lang.Object
org.moeaframework.problem.LSMOP.LSMOP
All Implemented Interfaces:
AutoCloseable, Problem
Direct Known Subclasses:
LSMOP1, LSMOP2, LSMOP3, LSMOP4, LSMOP5, LSMOP6, LSMOP7, LSMOP8, LSMOP9, MaF14, MaF15
public abstract class LSMOP extends Object implements Problem
Abstract class for defining LSMOP test problems.

  • Field Details

    • DEFAULT_N_k

      public static final int DEFAULT_N_k
      The default number of subcomponents in each decision variable group.
      See Also:

    • DEFAULT_N_ns

      public static final int DEFAULT_N_ns
      The default multiplier for the number of decision variables.
      See Also:

  • Constructor Details

    • LSMOP

      public LSMOP(int M, int N_k, ShapeFunction g1, ShapeFunction g2, LinkageFunction linkage, CorrelationMatrix correlationMatrix, ParetoFrontGeometry geometry)
      Constructs a new LSMOP problem instance.
      Parameters:
      M - the number of objectives
      N_k - the number of subcomponents in each decision variable group
      g1 - the first shape function (for even indices)
      g2 - the second shape function (for odd indices)
      linkage - the linkage function
      correlationMatrix - the correlation matrix
      geometry - the Pareto front geometry

    • LSMOP

      public LSMOP(int M, int N_k, int N_ns, ShapeFunction g1, ShapeFunction g2, LinkageFunction linkage, CorrelationMatrix correlationMatrix, ParetoFrontGeometry geometry)
      Constructs a new LSMOP problem instance.
      Parameters:
      M - the number of objectives
      N_k - the number of subcomponents in each decision variable group
      N_ns - the number of decision variables split across the groups
      g1 - the first shape function (for even indices)
      g2 - the second shape function (for odd indices)
      linkage - the linkage function
      correlationMatrix - the correlation matrix
      geometry - the Pareto front geometry

  • Method Details

    • getNumberOfVariables

      public int getNumberOfVariables()
      Description copied from interface: Problem
      Returns the number of decision variables defined by this problem.
      Specified by:
      getNumberOfVariables in interface Problem
      Returns:
      the number of decision variables defined by this problem

    • getNumberOfObjectives

      public int getNumberOfObjectives()
      Description copied from interface: Problem
      Returns the number of objectives defined by this problem.
      Specified by:
      getNumberOfObjectives in interface Problem
      Returns:
      the number of objectives defined by this problem

    • getNumberOfConstraints

      public int getNumberOfConstraints()
      Description copied from interface: Problem
      Returns the number of constraints defined by this problem.
      Specified by:
      getNumberOfConstraints in interface Problem
      Returns:
      the number of constraints defined by this problem

    • close

      public void close()
      Description copied from interface: Problem
      Closes any underlying resources used by this problem. Once closed, further invocations of any methods on this problem may throw exceptions.
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Problem

    • newSolution

      public Solution newSolution()
      Description copied from interface: Problem
      Returns a new solution for this problem. Implementations must initialize the variables so that the valid range of values is defined, but typically leave the actual value at a default or undefined state.
      Specified by:
      newSolution in interface Problem
      Returns:
      a new solution for this problem

    • getName

      public String getName()
      Description copied from interface: Problem
      Returns the user-friendly name for this problem.
      Specified by:
      getName in interface Problem
      Returns:
      the user-friendly name for this problem

    • evaluate

      public void evaluate(Solution solution)
      Description copied from interface: Problem
      Evaluates the solution, updating the solution's objectives in place. Algorithms must explicitly call this method when appropriate to evaluate new solutions or reevaluate modified solutions.
      Specified by:
      evaluate in interface Problem
      Parameters:
      solution - the solution to be evaluated