Lookahead

Lookahead or Look Ahead may refer to: A parameter of some combinatorial search algorithms, describing how deeply the graph representing the problem is explored A parameter of some parsing algorithms; the maximum number of tokens that a parser can use to decide which rule to use In dynamic range compression, a signal processing design to avoid compromise between slow attack rates that produce smooth-sounding gain changes, and fast attack rates capable of catching transients Look-ahead (backtracking), a subprocedure that attempts to predict the effects of choosing a branching variable to evaluate or one of its values Lookahead carry unit, a logical unit in digital circuit design used to decrease calculation time in adder units Look Ahead, a charitable housing association in London In regular expressions, an assertion to match characters after the current position

==Education== Look Ahead, 1990s English as a foreign language multimedia classroom project by BBC English and other organisations