MLPACK  1.0.7
neighbor_search.hpp
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1 
23 #ifndef __MLPACK_METHODS_NEIGHBOR_SEARCH_NEIGHBOR_SEARCH_HPP
24 #define __MLPACK_METHODS_NEIGHBOR_SEARCH_NEIGHBOR_SEARCH_HPP
25 
26 #include <mlpack/core.hpp>
27 #include <vector>
28 #include <string>
29 
31 
33 #include "neighbor_search_stat.hpp"
35 
36 namespace mlpack {
37 namespace neighbor {
40 
59 template<typename SortPolicy = NearestNeighborSort,
60  typename MetricType = mlpack::metric::SquaredEuclideanDistance,
61  typename TreeType = tree::BinarySpaceTree<bound::HRectBound<2>,
62  NeighborSearchStat<SortPolicy> > >
64 {
65  public:
86  NeighborSearch(const typename TreeType::Mat& referenceSet,
87  const typename TreeType::Mat& querySet,
88  const bool naive = false,
89  const bool singleMode = false,
90  const size_t leafSize = 20,
91  const MetricType metric = MetricType());
92 
114  NeighborSearch(const typename TreeType::Mat& referenceSet,
115  const bool naive = false,
116  const bool singleMode = false,
117  const size_t leafSize = 20,
118  const MetricType metric = MetricType());
119 
149  NeighborSearch(TreeType* referenceTree,
150  TreeType* queryTree,
151  const typename TreeType::Mat& referenceSet,
152  const typename TreeType::Mat& querySet,
153  const bool singleMode = false,
154  const MetricType metric = MetricType());
155 
183  NeighborSearch(TreeType* referenceTree,
184  const typename TreeType::Mat& referenceSet,
185  const bool singleMode = false,
186  const MetricType metric = MetricType());
187 
188 
193  ~NeighborSearch();
194 
207  void Search(const size_t k,
208  arma::Mat<size_t>& resultingNeighbors,
209  arma::mat& distances);
210 
211  private:
214  arma::mat referenceCopy;
216  arma::mat queryCopy;
217 
219  const arma::mat& referenceSet;
221  const arma::mat& querySet;
222 
224  TreeType* referenceTree;
226  TreeType* queryTree;
227 
229  bool treeOwner;
232 
234  bool naive;
237 
239  MetricType metric;
240 
242  std::vector<size_t> oldFromNewReferences;
244  std::vector<size_t> oldFromNewQueries;
245 
248 }; // class NeighborSearch
249 
250 }; // namespace neighbor
251 }; // namespace mlpack
252 
253 // Include implementation.
254 #include "neighbor_search_impl.hpp"
255 
256 // Include convenience typedefs.
257 #include "typedef.hpp"
258 
259 #endif