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Improving read performance is one of the major challenges with speeding up scientific data analytic applications. Utilizing the memory hierarchy is one major line of researches to address the read performance bottleneck. Related methods usually combine solide-state-drives(SSDs) with dynamic random-access memory(DRAM) and/or parallel file system(PFS) to mitigate the speed and space gap between DRAM...
Pivot selection partially dominates the query performance of pivot-based metric space indexing methods. Lacking of coordinate system in metric spaces, mathematical tools for Rn had been prevented from being applied to metric spaces. The pivot space model embeds a metric space into a high dimensional space while preserving all the pair-wise distances. As a result, pivot selection turns into a special...
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