The Weakly Connected Components algorithm, also known as Union Find, is a graph analytics technique used to identify groups of connected nodes in an undirected graph where each node is reachable from any other node in the same group. This algorithm differs from the Strongly Connected Components algorithm in that it only requires a path to exist between pairs of nodes in one direction, whereas SCC needs a path to exist in both directions. Union Find is often used as a preprocessing step for directed graphs and can be applied to various domains such as testing whether a graph is connected, analyzing citation networks, and keeping track of clusters of database records. The algorithm was first described by Bernard A. Galler and Michael J. Fischer in 1964 and can be computed using breadth-first search or depth-first search algorithms. By applying Union Find, developers can quickly identify disconnected groups and enable running other algorithms independently on identified clusters, making it a powerful tool for graph analytics and community detection.