Adaptive aggregation on graphs
Adaptive aggregation on graphs
复制标题
图上的自适应聚合
DOI:
10.1016/j.cam.2017.10.032
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发表时间:
2018
影响因子:
2.4
通讯作者:
Zikatanov, Ludmil T.
中科院分区:
文献类型:
--
作者:
Xu, Wenfang;Zikatanov, Ludmil T.
We generalize some of the functional (hypercircle) a posteriori estimates from finite element settings to general graphs or Hilbert space settings. Several theoretical results in regard to the generalized a posteriori error estimators are provided. We use these estimates to construct aggregation based coarse spaces for graph Laplacians. The estimator is used to assess the quality of an aggregation adaptively. Furthermore, a reshaping based algorithm is tested on several numerical examples.
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