meaning of co np
1. Co-NP complementary nondeterministic polynomial CONS connection-oriented network service cons /konz/ or /kons/ [LISP, "construct"] A Lisp function which takes an element H and a list T and returns a new list whose head is H and whose tail is T. In Lisp, "cons" is the most fundamental operation for building structures. It actually takes any two objects and returns a "dotted-pair" or two-branched tree with one object hanging from each branch. Because the result of a cons is an object, it can be used to build binary trees of any shape and complexity. [Jargon File] conservative evaluation Under this parallel evaluation strategy, no evaluation is started unless it is known to be needed. Opposite of speculative evaluation. considered harmful Edsger W. Dijkstras note in the March 1968 "Communications of the ACM", "Goto Statement Considered Harmful", fired the first salvo in the structured programming wars. Amusingly, the ACM considered the resulting acrimony sufficiently harmful that it will by policy no longer print an article taking so assertive a position against a coding practice. In the ensuing decades, a large number of both serious papers and parodies have borne titles of the form "X considered Y". The structured-programming wars eventually blew over with the realisation that both sides were wrong, but use of such titles has remained as a persistent minor in-joke. [Jargon File] consistently complete [domain theory] boundedly complete. console 1. The operators station of a mainframe. In times past, this was a privileged location that conveyed godlike powers to anyone with fingers on its keys. Under Unix and other modern time-sharing operating systems, such privileges are guarded by passwords instead, and the console is just the tty the system was booted from. Some of the mystique remains, however, and it is traditional for sysadmins to post urgent messages to all users from the console on Unix, /dev/console. 2. On microcomputer Unix boxes, the main screen and keyboard as opposed to character-only terminals talking to a serial port. Typically only the console can do real graphics or run X. See also CTY. [Jargon File] console jockey terminal junkie Consortium for Lexical Research CLR The Consortium for Lexical Research is a repository for natural language processing software, lexical data, tools and resources. It was set up in July 1991 in the Computing Research Laboratory of New Mexico State University, Las Cruces, New Mexico. CLR maintains a public ftp site, and a separate members-only library. Currently Feb 1994 CLR has about 60 members, mostly academic institutions, including most US natural language processing centres. Materials can be contributed to the archives in exchange for membership. ftp://clr. nmsu. edu/ 128. 123. 1. 12. E-mail:
Related Words
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