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All is well and good if we content ourselves with computations that can be distributed efficiently such as summing hourly revenue to produce daily revenue, or calculating click-through rates. In the language of Gray et al., the former calculation is distributive: we can sum the raw event prices to produce hourly revenue over each combination of dimensions and in turn sum this intermediary for furt
Q-Digest | paper cruncher
Continuing on the same note as the Greenwald-Khanna post, we discuss another novel data structure for order statistics called Q-Digest. Compared to GK, Q-Digest is much simpler, easier to implement and extends to a distributed solution very easily. The data structure was designed with sensor networks in mind, where minimizing radio transmission overhead is of paramount importance. It originally a
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Microsoft PowerPoint - lecture13 [Compatibility Mode]
