Add support for estimation of crp_alpha about uis-rnn HOT 5 OPEN

How to fix the total number of speakers? In most call center scenario, there are only 2 or 3 speakers.

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@fanlu The whole idea of UIS-RNN is to be able to handle unbounded number of speakers by learning from examples, instead of enforcing the number of speakers.

If you train UIS-RNN with call center audios where there are always 2 or 3 speakers, it should be able to predict at most 2 or 3 speakers, without requiring additional constraints.

However, since you asked, let me create a feature request issue for it. But likely we won't work on it for any time soon.

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Hi, do you have any update about this issue?
Or do you have any suggestion related to the input parameter adjustment when the system tends to add too many speakers?

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@suzinia Unfortunately no, since some core members have left the team.

You can try to locally apply #56 to constrain the number of speakers. It's not really very correct, but may solve your immediate problem.

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Thanks, I'll try that out!

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