RESCORING A DECISION
Vaibhava Goel, William Byme, Sanjeev P. Khudanpur · 1998
The problem of speeclh decoding is considered here in a Decision Theoretic framework and a modified speech decoding procedure to minimize the expected, risk under a general loss function is formulated. A specific word error rate loss function is considered and an implementation in an IV-best list rescoring procedure is presented. Methods for estimatioin of the parameters of the resulting decision rules are provided for both supervised and unsupervised training. Preliminary experiments on an LVCSR task show small but statistically significant error rate improvements.