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- W1509113568 abstract "Most state-of-the-art ordering schemes for sparse matrices are a hybrid of a bottom-up method such as minimum degree and a top-down scheme such as George's nested dissection. In this paper we present an ordering algorithm that achieves a tighter coupling of bottom-up and top-down methods. In our methodology vertex separators are interpreted as the boundaries of the remaining elements in an unfinished bottom-up ordering. As a consequence, we are using bottom-up techniques such as quotient graphs and special node selection strategies for the construction of vertex separators. Once all separators have been found, we are using them as a skeleton for the computation of several bottom-up orderings. Experimental results show that the orderings obtained by our scheme are in general better than those obtained by other ordering codes." @default.
- W1509113568 created "2016-06-24" @default.
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- W1509113568 date "2001-01-01" @default.
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- W1509113568 doi "https://doi.org/10.1023/a:1021908421589" @default.
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