[mlpack-git] [mlpack/mlpack] Implementation of Multiprobe LSH (#691)

[Ryan Curtin]

> +  LSHSearch<> lshTest(rdata, projections,
> +                      hashWidth, secondHashSize, bucketSize);
> +
> +
> +  // two points near the clusters but outside their bins. q1's lowest scoring
> +  // perturbation vectors will map to C1 cluster's bins.
> +  arma::mat q1;
> +  q1 << 1.1 << arma::endr << 3.3; // vector [1.1, 3.3]
> +
> +  arma::Mat<size_t> neighbors;
> +  arma::mat distances;
> +
> +  // Test that q1 simple search comes up empty
> +  lshTest.Search(q1, k, neighbors, distances);
> +  cout << neighbors << endl;
> +  BOOST_REQUIRE( arma::all(neighbors.col(0) == N) );

Extra spaces here... `BOOST_REQUIRE(arma::all(neighbors.col(0) == N));`

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