Hyytinen, Ari; Steen, Frode; Toivanen, Otto - Institutt for samfunnsøkonomi, Norges Handelshøyskole … - 2010
How many cartels are there? The answer is important in assessing the efficiency of competition policy. We present a Hidden Markov Model that answers the question, taking into account that often we do not know whether a cartel exists in an industry or not. Our model identifies key policy...