Add support for estimation of crp_alpha

[wq2012]

Currently in this open source version, crp_alpha is passed in as an argument.

We need to add the support to estimate it from training data.

[fanlu]

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

[wq2012]

@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.

[suzinia]

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?

[wq2012]

@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.

[suzinia]

Thanks, I'll try that out!