---
name: "lsh_search.hpp"
section: "3"
platform: "linux"
package: "mlpack-doc"
version: "1.0.10-1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/lsh_search.hpp"
---

# lsh\_search.hpp(3)

## NAME

src/mlpack/methods/lsh/lsh\_search.hpp -

## SYNOPSIS

### Classes

class **mlpack::neighbor::LSHSearch\< SortPolicy \>**\
 *The* **LSHSearch** *class -- This class builds a hash on the reference set and uses this hash to compute the distance-approximate nearest-neighbors of the given queries.*

### Namespaces

 **mlpack**\
 *Linear algebra utility functions, generally performed on matrices or vectors.*   **mlpack::neighbor**\
 *Neighbor-search routines.*

## Detailed Description

**Author:**

Parikshit Ram

Defines the LSHSearch class, which performs an approximate nearest neighbor search for a queries in a query set over a given dataset using Locality-sensitive hashing with 2-stable distributions.

The details of this method can be found in the following paper:

{datar2004locality, title={Locality-sensitive hashing scheme based on p-stable distributions}, author={Datar, M. and Immorlica, N. and Indyk, P. and Mirrokni, V.S.}, booktitle= {Proceedings of the 12th Annual Symposium on Computational Geometry}, pages={253--262}, year={2004}, organization={ACM} }

This file is part of MLPACK 1.0.10.

MLPACK is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

MLPACK is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details (LICENSE.txt).

You should have received a copy of the GNU General Public License along with MLPACK. If not, see http://www.gnu.org/licenses/.

Definition in file **lsh\_search.hpp**.

## Author

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