19 Nov
1999
Sphinx
Speech Group, CMU-SCS (rkm@cs.cmu.edu)
The Backpointer Table (contd.)
·Some
additional information available from BP table:
·All
candidate words recognized during recognition
·Word
segmentations
·Word
segment acoustic scores
·“Lattice density”: No. of competing word
hypotheses at any instant
·Useful for
postprocessing steps:
·Lattice
rescoring
·N-best
list generation
·Confidence
measures