A Structural Diagnosis of Some IC Orderings
نویسندگان
چکیده
We present a novel analysis of the potential effectiveness of a matrix ordering for IC in terms of just the sparsity structure. By looking at the structure of the approximate inverse implicitly created by IC we can help to explain the success of Reverse Cuthill-McKee orderings, the problems IC(0) has under Red-Black orderings that disappear when extra fill is included, and where fill must be added to make fill-reducing orderings such as Minimum Degree effective.
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ورودعنوان ژورنال:
- SIAM J. Scientific Computing
دوره 22 شماره
صفحات -
تاریخ انتشار 2001