On a Decentralized (Δ+1)-Graph Coloring Algorithm
On a Decentralized (Δ+1)-Graph Coloring Algorithm
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DOI:
10.1137/1.9781611976014.13
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发表时间:
2020-01
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影响因子:
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通讯作者:
Deeparnab Chakrabarty;P. D. Supinski
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文献类型:
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作者:
Deeparnab Chakrabarty;P. D. Supinski
We consider a decentralized graph coloring model where each vertex only knows its own color and whether some neighbor has the same color as it. The networking community has studied this model extensively due to its applications to channel selection, rate adaptation, etc. Here, we analyze variants of a simple algorithm of Bhartia et al. [Proc., ACM MOBIHOC, 2016]. In particular, we introduce a variant which requires onlyO(nlog Δ) expected recolorings that generalizes the coupon collector problem. Finally, we show that theO(nΔ) bound Bhartia et al. achieve for their algorithm still holds and is tight in adversarial scenarios.