(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)