2017

Fast Approximate Nearest Neighbor Search With The Navigating Spreading-out Graph

Fu, Cong, Xiang, Chao, Wang, Changxu et al.

Understand

Approximate nearest neighbor search (ANNS) is a fundamental problem in databases and data mining.

  • A scalable ANNS algorithm should be both memory-efficient and fast.
  • Some early graph-based approaches have shown attractive theoretical guarantees on search time complexity, but they all suffer from the problem of high indexing time complexity.
  • Recently, some graph-based methods have been proposed to reduce indexing complexity by approximating the traditional graphs; these methods have achieved revolutionary performance on million-scale datasets.

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