Trading Quality for Time with Nearest Neighbor Search

@inproceedings{Weber2000TradingQF,
  title={Trading Quality for Time with Nearest Neighbor Search},
  author={Roger Weber and Klemens B{\"o}hm},
  booktitle={EDBT},
  year={2000}
}
In many situations, users would readily accept an approximate query result if evaluation of the query becomes faster. In this article, we investigate approximate evaluation techniques based on the VA-File for Nearest-Neighbor Search (NN-Search). The VA-File contains approximations of feature points. These approximations frequently suffice to eliminate the vast majority of points in a first phase. Then, a second phase identifies the NN by computing exact distances of all remaining points. To… 
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