Source: wikibot/nearest-neighbor-search
= Nearest neighbor search
{wiki=Nearest_neighbor_search}
Nearest neighbor search is a fundamental problem in computer science and data analysis that involves finding the closest point(s) in a multi-dimensional space to a given query point. It is commonly used in various applications, including machine learning, computer vision, recommendation systems, and robotics. \#\#\# Key Concepts: 1. **Distance Metric**: The notion of "closeness" is defined by a distance metric.