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- W3030282017 abstract "Hierarchical aggregation supports fast exploration of large datasets by pre-aggregating data into a multi-scale data structure. While the pre-aggregation process is done offline, it can be quite expensive, and the resulting data-structure extremely large. When the data is multi-dimensional, this is greatly compounded. Data-cube-based approaches can result in extremely large cubic data-structures, aggregating more than is needed. Other approaches do not aggregate enough, and so do not offer the necessary flexibility for dimension-wise roll-ups and drill-downs. We design a hierarchical data-structure for aggregation that strikes a balance, and provides enough flexibility for different exploration scenarios with low-cost construction and reasonable size. Inductive aggregation is a methodology to compute levels of aggregations efficiently, while the resulting data-structure supports smooth data exploration. Inspired by this, we propose a partitioned, inductively aggregated data-cube, picube. A framework we call stratum space is presented with the model to express the dependencies across aggregation levels. Optimization choices are discussed, providing good design tradeoffs between storing and querying of the data." @default.
- W3030282017 created "2020-06-05" @default.
- W3030282017 creator A5060024390 @default.
- W3030282017 date "2020-04-01" @default.
- W3030282017 modified "2023-09-23" @default.
- W3030282017 title "Picube for Fast Exploration of Large Datasets" @default.
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- W3030282017 doi "https://doi.org/10.1109/icde48307.2020.00246" @default.
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