Nearest neighbor

Nearest neighbor may refer to:
 * Nearest neighbor search in pattern recognition and in computational geometry
 * Nearest-neighbor interpolation for interpolating data
 * Nearest neighbor graph in geometry
 * Nearest neighbor function in probability theory
 * Nearest neighbor decoding in coding theory
 * The k-nearest neighbor algorithm in machine learning, an application of generalized forms of nearest neighbor search and interpolation
 * The nearest neighbour algorithm for approximately solving the travelling salesman problem
 * The nearest-neighbor thermodynamic parameters for determining the thermodynamics of nucleic acids
 * The nearest neighbor clustering for calculating distances between clusters in hierarchical clustering