You can find most of my work in this web site including researches and softwares. I also put some private suff for my friends.

Research Interest

My research directions are related to biometric authentication, speaker verification and machine learning algorithms. In particular, I’m interested by some specific problems such as the use of variable length sequences in machine learning, dealing with unbalanced two class classification problems and similarity measures. I’m also a contributor of the well known Torch machine learning library.

Recently I provided for a book chapter a speaker verification software on nist database, for more details see here.


Mail: Johnny Mariethoz Ch. du Joueur 22 CH-1927 Chemin Switzerland Email: chezjohnny [at] yahoo.fr