On the complexity of the identification problem in Hamming spaces
: Honkala I, Lobstein A
Publisher: SPRINGER-VERLAG
: 2002
: Acta Informatica
: ACTA INFORMATICA
: ACTA INFORM
: 38
: 11-12
: 839
: 845
: 7
: 0001-5903
DOI: https://doi.org/10.1107/s00236-002-0093-4
A binary code C subset of or equal to {0, 1}(n) is called w-identifying if the sets B-w(x) boolean AND C for x is an element of x {0, 1}(n) are all nonempty and no two are the same. Here B-w(x) denotes the set of all vectors in {0, 1}(n) within Hamming distance w from x. We show that the problem of deciding, whether or not a given code C is w-identifying, is co-NP-complete.