(YA-, after Unix' s yacc - Yet Another Compiler-Compiler) A humorous allusion often used in titles to acknowledge that the topic is not original, though the content is.As in "Yet Another AI Group" or "Yet Another {Simulated Annealing} {Algorithm}".If used of others'work, it describes something of which there are already far too many.In hackish acronyms the "YA" prefix almost invariably expands to Yet Another, e.g. YABA, YAUN.[Jargon File](1996-11-26)