CBR
    n 1: (cosmology) the cooled remnant of the hot big bang that
         fills the entire universe and can be observed today with an
         average temperature of about 2.725 kelvin [syn: cosmic
         background radiation, CBR, cosmic microwave background
         radiation, CMBR, cosmic microwave background, CMB]

	

	CBR
       Constant Bit Rate (ATM, VBR, ABR, UBR, QOS, BIT)

	

	case based reasoning
CBR

    (CBR) A technique for problem
   solving which looks for previous examples which are similar to
   the current problem.  This is useful where heuristic
   knowledge is not available.

   There are many situations where experts are not happy to be
   questioned about their knowledge by people who want to write
   the knowledge in rules, for use in expert systems.  In most
   of these situations, the natural way for an expert to describe
   his or her knowledge is through examples, stories or cases
   (which are all basically the same thing).  Such an expert will
   teach trainees about the expertise by apprenticeship, i.e. by
   giving examples and by asking the trainees to remember them,
   copy them and adapt them in solving new problems if they
   describe situations that are similar to the new problems.  CBR
   aims to exploit such knowledge.

   Some key research areas are efficient indexing, how to define
   "similarity" between cases and how to use temporal
   information.

   (1996-05-28)