14 research outputs found
Some results on Minimum Consistent Subsets of Trees
For a graph G = (V,E) where each vertex is coloured by one of k colours,
consider a subset C of V such that for each vertex v in V\C, its set of nearest
neighbours in C contains at least one vertex of the same colour as v. Such a C
is called a consistent subset (CS). Computing a consistent subset of the
minimum size is called the Minimum Consistent Subset problem (MCS). MCS is
known to be NP-complete for planar graphs. We propose a polynomial-time
algorithm for finding a minimum consistent subset of a k-chromatic spider graph
when k is a constant. We also show MCS remains NP-complete on trees
LIPIcs, Volume 274, ESA 2023, Complete Volume
LIPIcs, Volume 274, ESA 2023, Complete Volum
LIPIcs, Volume 258, SoCG 2023, Complete Volume
LIPIcs, Volume 258, SoCG 2023, Complete Volum