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cs.DB2017★ 1 cited
A Simple and Efficient MapReduce Algorithm for Data Cube Materialization
Mukund Sundararajan, Qiqi Yan
Data cube materialization is a classical database operator introduced in Gray et al.~(Data Mining and Knowledge Discovery, Vol.~1), which is critical for many analysis tasks. Nandi…
cs.DB2017
Hierarchical Summarization of Metric Changes
Matthias Ruhl, Mukund Sundararajan, Qiqi Yan
We study changes in metrics that are defined on a cartesian product of trees. Such metrics occur naturally in many practical applications, where a global metric (such as revenue) c…