?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Adapted+Extended+Baum-Welch+transformations&rft.creator=Kanevsky%2C+Dr+Dimitri&rft.creator=Povey+%2C+Dr+Daniel+&rft.creator=Ramabhadran%2C+Dr+Bhuvana+&rft.creator=Sainath%2C+Dr+Tara&rft.subject=Speech&rft.description=The+discrimination+technique+for+estimating+parameters+of+Gaussian+mixtures+that+is+based+on+the+Extended+Baum-Welch+transformations+(EBW)+has+had+significant+impact+on+the+speech+recognition+community.++%0D%0AIn+this+paper+we+introduce+a+general+definition+of+a+family+of+EBW+transformations+that+can+be+associated+with+a+weighted+sum+of+updated+and+initial+models.+We+compute+a+gradient+steepness+measurement+for+a+family+of+EBW+transformations+that+are+applied+to+functions+of++Gaussian+mixtures+and+demonstrate+the+growth+property+of+these+transformations.+We+consider+EBW+transformations++of+discriminative+functions+in+which+EBW+controlled+parameters+are+adapted+to+a+gradient+steepness+measurement+or+to+the+likelihood+of+the+data+given+the+model.+We+present+experimental+results+that+show+that+adapted+EBW+transformations+can+significantly+speed+up+estimating+parameters+of+Gaussian+mixtures+and+give+better+decoding+results.&rft.date=2007-10-01&rft.type=Preprint&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5902%2F1%2Frc24458.pdf&rft.identifier=++Kanevsky%2C+Dr+Dimitri+and+Povey+%2C+Dr+Daniel++and+Ramabhadran%2C+Dr+Bhuvana++and+Sainath%2C+Dr+Tara++(2007)+Adapted+Extended+Baum-Welch+transformations.++%5BPreprint%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5902%2F