Stream Aggregation Through Order Sampling

This is paper introduces a new single-pass reservoir weighted-sampling stream aggregation algorithm, Priority-Based Aggregation (PBA). While order sampling is a powerful and e cient method for weighted sampling from a stream of uniquely keyed items, there is no current algorithm that realizes the benefits of order sampling in the context of stream aggregation over non-unique keys. A naive approach to order sample regardless of key then aggregate the results is hopelessly inefficient...


Nesreen K. Ahmed

Senior Research Scientist, Brain-Inspired Computing Lab

View authors bio

Nick Duffield

Yunhong Xu

Liangzhen Xia

Minlan Yu

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