G-2016-79
NP-hardness of balanced minimum sum-of-squares clustering
Artem Pyatkin, Daniel Aloise et Nenad Mladenović
The balanced clustering problem consists of partitioning a set of \(n\)
objects into \(K\)
equal-sized clusters as long as
\(n\)
is a multiple of \(K\)
. A popular clustering criterion when the objects are points of a \(q\)
-dimensional space is
the minimum sum of squared distances from each point to the centroid of the cluster to which it belongs. We show
in this paper that this problem is \(NP\)
-hard in general dimension already for triplets, i.e., when \(n/K=3\)
.
Paru en octobre 2016 , 6 pages