Maximal disjoint subset problem

  • Thread starter Thread starter mXSCNT
  • Start date Start date
Click For Summary
SUMMARY

The maximal disjoint subset problem involves finding a maximal subset of a collection of sets S = {s1, s2, ..., sn} where all sets are pairwise disjoint. This problem is NP-complete and can be formulated as a dynamic programming problem. It is equivalent to the max clique problem in graph theory, where each node in a graph G = (V,E) corresponds to a set s(n). The maximum size of the pairwise disjoint subset of S corresponds to the nodes in the max clique of the graph, confirming the NP-completeness of the problem.

PREREQUISITES
  • Understanding of NP-completeness in computational theory
  • Familiarity with dynamic programming techniques
  • Knowledge of graph theory, specifically the max clique problem
  • Basic concepts of set theory and disjoint sets
NEXT STEPS
  • Research the properties of NP-complete problems and their implications
  • Study dynamic programming approaches for optimization problems
  • Explore the max clique problem in detail, including algorithms for its solution
  • Investigate applications of disjoint set problems in real-world scenarios
USEFUL FOR

Computer scientists, algorithm designers, and researchers in computational complexity who are interested in optimization problems and their applications in graph theory.

mXSCNT
Messages
310
Reaction score
1
We have a set of sets S = {s1, s2, ..., sn}. We seek a maximal subset of S, such that the sets in that subset are all pairwise disjoint.

How difficult is this? Is it NP-complete? Does this problem have a name?
 
Technology news on Phys.org
I don't think that this problem has a name. It may be possible to formulate this as a dynamic programming problem, think about that a little if you will.
 
Oh, I just realized it is the max clique problem... for a given graph G = (V,E), assign each node a set s(n). Let s(n) = {(n,b) | b != n and the edge (n,b) is not in the graph}. That implies there is an edge between two nodes a,b if and only if s(a) and s(b) are pairwise disjoint. So the maximum size pairwise disjoint subset of S = {s(n) | n is in V} consists of the sets corresponding to nodes in the max clique of the graph. This reduction is polynomial time, so my maximal disjoint subset problem is NP-complete.
 

Similar threads

  • · Replies 14 ·
Replies
14
Views
4K
  • · Replies 25 ·
Replies
25
Views
3K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 21 ·
Replies
21
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
6
Views
2K