Thursday, December 17, 2009

bad data or over pruning

HERest -C src/ConfigHVite -I lists/train.phonemlf -t 250.0 150.0 1000.0 -S train.mfcc.list -H hmm0/macros -H hmm0/hmmdefs -M hmm1 lists/monophones1
ERROR [-7324] StepBack: File ... bad data or over pruning
Possible problems include corrupt mfcc, non-matching or non-existent labels. In this case, I had to re-calculate the mean & variance for the prototype hmm using only 1/2 the data, and the problem went away. If every file is considered bad data, you may have derived the features wrong. Go back to HCopy and check the parameters (config file).


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