CONF bourlard-eurospeech97.1/IDIAP Estimation of Global Posteriors and Forward-Backward Training of Hybrid HMM/ANN Systems Hennebert, Jean Ris, Christophe Bourlard, Hervé Renals, Steve EXTERNAL http://publications.idiap.ch/attachments/reports/1997/euro97.pdf PUBLIC EUROSPEECH'97 1997 September 1997 1951-1954