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# flann. Clustering and Search in Multi-Dimensional Spaces

- Fast Approximate Nearest Neighbor Search
  - flann::Index_
  - flann::Index_<T>::Index_
  - flann::Index_<T>::knnSearch
  - flann::Index_<T>::radiusSearch
  - flann::Index_<T>::save
  - flann::Index_<T>::getIndexParameters
- Clustering
  - flann::hierarchicalClustering<Distance>

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