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WIP: Exponential smoothing CMN #3157

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vimalmanohar
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Adding exponential smoothing based CMN where the moving average is estimated using a exponential smoothing with a time decay and a latency at the beginning of the utterance.

@RuABraun
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Is there a reason this seems to have been abandoned and the focus is instead on the normal rectangular online cmvn?

@danpovey
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That's a good question. @vimalmanohar I think I asked you before about this but didn't get a response. Can you please let us know if there is any performance difference?
The exponential one is easier to implement so might be preferable if performance is the same.

@vimalmanohar
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@phanisankar-nidadavolu was also testing this. I think exponential CMN is about the same as sliding CMN, but the performance degrades when used with i-vectors (ivectors alone is better than ivectors + CMN).

@danpovey
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danpovey commented Aug 24, 2019 via email

@vimalmanohar
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vimalmanohar commented Aug 24, 2019 via email

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stale bot commented Jun 19, 2020

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

@stale stale bot added the stale Stale bot on the loose label Jun 19, 2020
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stale bot commented Jul 19, 2020

This issue has been automatically closed by a bot strictly because of inactivity. This does not mean that we think that this issue is not important! If you believe it has been closed hastily, add a comment to the issue and mention @kkm000, and I'll gladly reopen it.

@stale stale bot closed this Jul 19, 2020
@kkm000 kkm000 reopened this Jul 19, 2020
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stale bot commented Sep 17, 2020

This issue has been automatically marked as stale by a bot solely because it has not had recent activity. Please add any comment (simply 'ping' is enough) to prevent the issue from being closed for 60 more days if you believe it should be kept open.

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4 participants