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teknopedia

Flag Counter
  2. World Encyclopedia
  3. Best bin first - Wikipedia
Best bin first - Wikipedia
From Wikipedia, the free encyclopedia
(Redirected from Best Bin First)

Best bin first is a search algorithm that is designed to efficiently find an approximate solution to the nearest neighbor search problem in very-high-dimensional spaces. The algorithm is based on a variant of the kd-tree search algorithm which makes indexing higher-dimensional spaces possible. Best bin first is an approximate algorithm which returns the nearest neighbor for a large fraction of queries and a very close neighbor otherwise.[1]

Differences from kd tree

  • Bins are looked in increasing order of distance from the query point. The distance to a bin is defined as a minimal distance to any point of its boundary. This is implemented with priority queue.[2]
  • Search a fixed number of nearest candidates and stop.
  • A speedup of two orders of magnitude is typical.

References

  1. ^ Beis, J.; Lowe, D. G. (1997). Shape indexing using approximate nearest-neighbour search in high-dimensional spaces. Conference on Computer Vision and Pattern Recognition. Puerto Rico. pp. 1000–1006. CiteSeerX 10.1.1.23.9493.
  2. ^ Shape Indexing Using Approximate Nearest-Neighbour Search in High-Dimensional Spaces, pp. 4-5


Stub icon

This algorithms or data structures-related article is a stub. You can help Wikipedia by adding missing information.

Sunting pranala
url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url url 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