| 2003 | Interspeech | Incremental learning of new user formulations in automatic directory assistance. | Marco Andorno, Luciano Fissore, Pietro Laface, Mario Nigra, Cosmin Popovici, Franco Ravera, Claudio Vair |
| 2002 | ICASSP | Learning new user formulations in automatic Directory Assistance. | Cosmin Popovici, Marco Andorno, Pietro Laface, Luciano Fissore, Mario Nigra, Claudio Vair |
| 2001 | Interspeech | Learning of user formulations for business listings in automatic directory assistance. | Cosmin Popovici, Marco Andorno, Pietro Laface, Luciano Fissore, Mario Nigra, Claudio Vair |
| 1999 | Interspeech | Piecewise HMM discriminative training. | Cristina Chesta, Pietro Laface, Mario Nigra |
| 1998 | ICASSP | Discriminative training of hidden Markov models using a classification measure criterion. | Cristina Chesta, Aldo Girardi, Pietro Laface, Mario Nigra |
| 1997 | Interspeech | Preliminary results of a multilingual interactive voice activated telephone service for people-on-the-move. | Fulvio Leonardi, Giorgio Micca, Sheyla Militello, Mario Nigra |