A linear-time self-stabilizing distributed algorithm for the minimal minus ($L, K, Z$) -domination problem under the distance-2 model.
CANDARW(2022)
摘要
The domination problem is one of the fundamental graph problems and there are many variations. The problem has practical applications in a distributed setting, and studied well in the distributed computing community. In this paper, we propose a new problem called the minus (
$L, K, Z$
) -domination problem where
$L, K$
, and
$Z$
are integers such that
$L\leq-1,K\geq 1$
, and
$Z\geq 1$
. The minus (
$L, K, Z$
) -domination problem is a problem to assign a value
$L, L+1, \ldots, 0, \ldots, K-1, K$
for each vertex in a graph such that the local summation of values is greater than or equal to
$Z$
. Because it is the same as the minus domination problem when
$L=-1, K=1$
and
$Z=1$
, it is an extension of the minus domination problem. Then, we propose a self-stabilizing distributed algorithm for the minus (
$L, K, Z$
) -domination problem, where self-stabilization is a class of fault-tolerant distributed algorithms that tolerate arbitrary finite number of transient faults. The proposed algorithm is designed under the distance-2 model and the unfair central daemon, and its convergence time is
$O(n)$
, that is, linear to
$n$
, where
$n$
is the number of processes. If it is converted into the ordinary distance-1 model with a transformer, we obtain an algorithm whose convergence time is
$O(nm)$
.
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