downfromnode
Downfromnode is a term used in graph processing to describe an operation that collects all nodes reachable from a designated starting node by following directed edges in a downward direction, from parent toward child. In trees and directed acyclic graphs this typically yields the subgraph rooted at the starting node. When cycles exist, implementations usually maintain a visited set to avoid infinite traversal.
Inputs and outputs: Given a directed graph G=(V,E), a start node s, and an optional depth limit,
Traversal methods: Depth-first search and breadth-first search are standard implementations. DFS explores long descendant chains first,
Complexity and properties: The running time is proportional to the number of reachable nodes and edges among
Applications and relation: Downfromnode is used for subtree extraction, visualization, dependency analysis, and query processing where