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Finding partition with maximum number of edges between sets


Mean number of edges between two equal partitionsFinding edges with minimal weight sum, such that every simple cycle contain at least one edgegraph theory analogue of rectangular matrixMinimum number of sets of unreachable vertices for directed acyclic graph (DAG)Maximize the number of edges in subgraphmaximum matching number decreases when vertices collapse?What is the relationship between minimum vertex cover and minimum clique coverRemoving max number of edges while keeping minimum distancesOptimal partitioning of n-tuples






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








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Given a graph (say in adjacency list form), is there an algorithm to find a partition of vertices such that the number of edges between the two sets of the partition is the maximum possible?



For example, for the following set of edges of a graph with vertex set $1, 2, 3, 4, 5, 6$:
$(1, 2), (2, 3), (3, 1), (4, 5) , (5, 6), (6, 4)$, one possible "maximum" partition is $1, 3, 4, 6, 2, 5$ with $4$ edges between the sets $1, 3, 4, 6$ and $2, 5$.










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    1












    $begingroup$


    Given a graph (say in adjacency list form), is there an algorithm to find a partition of vertices such that the number of edges between the two sets of the partition is the maximum possible?



    For example, for the following set of edges of a graph with vertex set $1, 2, 3, 4, 5, 6$:
    $(1, 2), (2, 3), (3, 1), (4, 5) , (5, 6), (6, 4)$, one possible "maximum" partition is $1, 3, 4, 6, 2, 5$ with $4$ edges between the sets $1, 3, 4, 6$ and $2, 5$.










    share|cite|improve this question









    $endgroup$
















      1












      1








      1





      $begingroup$


      Given a graph (say in adjacency list form), is there an algorithm to find a partition of vertices such that the number of edges between the two sets of the partition is the maximum possible?



      For example, for the following set of edges of a graph with vertex set $1, 2, 3, 4, 5, 6$:
      $(1, 2), (2, 3), (3, 1), (4, 5) , (5, 6), (6, 4)$, one possible "maximum" partition is $1, 3, 4, 6, 2, 5$ with $4$ edges between the sets $1, 3, 4, 6$ and $2, 5$.










      share|cite|improve this question









      $endgroup$




      Given a graph (say in adjacency list form), is there an algorithm to find a partition of vertices such that the number of edges between the two sets of the partition is the maximum possible?



      For example, for the following set of edges of a graph with vertex set $1, 2, 3, 4, 5, 6$:
      $(1, 2), (2, 3), (3, 1), (4, 5) , (5, 6), (6, 4)$, one possible "maximum" partition is $1, 3, 4, 6, 2, 5$ with $4$ edges between the sets $1, 3, 4, 6$ and $2, 5$.







      graphs graph-theory partitions






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      asked 8 hours ago









      ab123ab123

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          $begingroup$

          If your question really is "is there an algorithm", the answer is obviously yes: just try every possible partition and choose the one maximizing the number of edges with endpoints in different parts.



          Otherwise, it's unlikely that there is a polynomial-time algorithm. Indeed, this problem is known as maximum cut and it is well-known to be NP-hard.






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            $begingroup$

            If your question really is "is there an algorithm", the answer is obviously yes: just try every possible partition and choose the one maximizing the number of edges with endpoints in different parts.



            Otherwise, it's unlikely that there is a polynomial-time algorithm. Indeed, this problem is known as maximum cut and it is well-known to be NP-hard.






            share|cite|improve this answer









            $endgroup$



















              2














              $begingroup$

              If your question really is "is there an algorithm", the answer is obviously yes: just try every possible partition and choose the one maximizing the number of edges with endpoints in different parts.



              Otherwise, it's unlikely that there is a polynomial-time algorithm. Indeed, this problem is known as maximum cut and it is well-known to be NP-hard.






              share|cite|improve this answer









              $endgroup$

















                2














                2










                2







                $begingroup$

                If your question really is "is there an algorithm", the answer is obviously yes: just try every possible partition and choose the one maximizing the number of edges with endpoints in different parts.



                Otherwise, it's unlikely that there is a polynomial-time algorithm. Indeed, this problem is known as maximum cut and it is well-known to be NP-hard.






                share|cite|improve this answer









                $endgroup$



                If your question really is "is there an algorithm", the answer is obviously yes: just try every possible partition and choose the one maximizing the number of edges with endpoints in different parts.



                Otherwise, it's unlikely that there is a polynomial-time algorithm. Indeed, this problem is known as maximum cut and it is well-known to be NP-hard.







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered 7 hours ago









                JuhoJuho

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