19 Nov
1999
Sphinx
Speech Group, CMU-SCS (rkm@cs.cmu.edu)
Lextree Search: LM Integration
·Problem:
LM probabilities cannot be determined upon transition to lextree root nodes
·Root
nodes shared among several unrelated words
·Several
solutions possible:
·Incremental
evaluation, using composite LM scores
·Lextree
replication (Ney, Antoniol)
·Rescoring
at every node (BBN)
·Post-tree
evaluation (Sphinx-II)