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)