Questions tagged [matching]
For questions on matchings, i.e. sets of disjoint edges of an undirected graph.
6
questions
7
votes
2answers
434 views
Can a generic ILP solver find graph matchings as fast as a specialized algorithm?
Finding a maximum matching, or a maximum-weight matching, is a well-known problem, which has polynomial-time combinatorial algorithms.
It can also be formulated as an integer linear program.
In ...
4
votes
1answer
39 views
Finding an augmenting path or cycle in weighted graph
Suppose we are given a (simple) graph with non-negative edge weights, along with a matching $M$, which may or may not be max weight. I know that $M$ will be max weight if and only if the graph does ...
5
votes
2answers
220 views
Counting the number of matchings in a complete bipartite graph
I am trying to count the number of matchings in a complete bipartite graph (perfect as well as imperfect). It's relatively easy for me to convince myself that there is $n!$ perfect matchings in the ...
2
votes
0answers
69 views
Problem classification: optimal weights for Weighted Arithmetic Mean
I want to write an optimisation problem then solve it, to get optimised weights to compute a final score using a weighted arithmetic mean.
The problem is as follows. I have an entity (an input vector ...
21
votes
1answer
304 views
Polynomially solvable problems with exponential extension complexity
The maximum matching problem is solvable in polynomial time using Edmonds' blossom algorithm. However, unlike for example the spanning tree polytope, it has been proven fairly recently that the ...
10
votes
1answer
125 views
Relationship between the Assignment Problem and the Stable Marriage Problem
Suppose I'm solving a minimum-weight matching problem in a bipartite graph with sets $\mathcal{I}$ and $\mathcal{J}$, where $w_{ij}$ denotes the weight of matching item $i$ to $j$. I can model the ...
