Building Blocks and Excluded Sums
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چکیده
Figure 3. The four terms PPij, PSij, SPij, and SSij “wrap around” the excluded center cell i,j to cover the shaded region. Figure 2. The prefix algorithm. The prefix and suffix sums Pi ,Si are computed as cumulative sums starting from the left and from the right. The excluded sum is then Pi–1 + Si+1. If we peel away, layer by layer, the complexities of the fast multipole method, we find that its inner core is a computation of:
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تاریخ انتشار 2005