anchor.diff:  average reward obtained in this case is -1.17 for gold-standard
   learning and -0.59 for HORDQ-A)
   
  -------------------------------------------------------------------------
  +........................................................................
   WASTE-PROG> (learn-behavior)
   Learning
   Episode 0................................
  
positive.code: NIL
  WASTE-PROG> (evaluate-performance)
  Evaluating policies.....................................................
  ...............................................
  Evaluating policies.....................................................
  ...............................................
  
  Learning curves are:
  
  
negative.code: Waste Targets: ((0 0))  Fuel: 1.0
  Stack: ((TOP CHOOSE-WASTE-REMOVAL-ACTION-EXIT NIL))>.
  Start a new episode? (y or n) 
  ........................................................................