“…When it comes to natural language processing, it has been intensively studied for automatic speech recognition (Mauclair, 2006;Razik, 2007;Guo et al, 2004). We find in literature (Blatz et al, 2003;Ueffing and Ney, 2004;Ueffing and Ney, 2005;Uhrik and Ward, 1997;Akiba et al, 2004;Duchateau et al, 2002) different ways of approximating the probability of correctness or of calculating scores which are supposed to reflect this probability.…”