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- W2180132193 abstract "Because MapReduce supports efficient parallel data processing, MapReduce-based query processing algorithms have been widely studied. Among various query types, k-nearest neighbor join, which aims to produce the k nearest neighbors of each point of a dataset from another dataset, has been considered most important in data analysis. Existing k-NN join query processing algorithms on MapReduce suffer from high index construction and computation costs which make them unsuitable for big data processing. In this paper, we propose a new grid-based k-NN join query processing algorithm on MapReduce. First, we design a dynamic grid index that represents the distribution of join datasets. Based on this index, we prune out unnecessary cells for the join with the distance-based filtering. This can reduce the data transmission and computation overheads. From performance analysis, we show that our algorithm outperforms the existing scheme up to seven times in terms of query processing time while achieving high query result accuracy." @default.
- W2180132193 created "2016-06-24" @default.
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- W2180132193 date "2015-08-01" @default.
- W2180132193 modified "2023-09-26" @default.
- W2180132193 title "A Grid-Based k-Nearest Neighbor Join for Large Scale Datasets on MapReduce" @default.
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- W2180132193 doi "https://doi.org/10.1109/hpcc-css-icess.2015.189" @default.
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