English Computing Dictionary
◊ ITERATIVE DEEPENING
iterative deepening
A graph search algorithm. When searching for a path through a
graph from a given initial node to a solution node with some
desired property, a {depth-first search} may never find a
solution if it enters a cycle in the graph. We can either add
an explicit check for cycles so that we never extend a path
with a node it already contains or we can use iterative
deepening where we explore all paths up to length (or "depth")
N, starting from N◦0 and increasing N until a solution is
found.
(1995-02-14)