Any contextual biasing support with Zipformer2-CTC

[manickavela-uni]

Hey @csukuangfj,

From the docs, it is clear that contextual biasing is implemented only for transducer models,
is it possible to have them for online CTC, like zipformer CTC.
From the code i see that k2 FST decoders, is it possible to add in any feature for contextual biasing

[csukuangfj]

Yes, I think it is possible. Contribution is very welcome.

[manickavela-uni]

Can you share some good doc about it 😄 , would be grateful to have

[csukuangfj]

E.g., wenet-e2e/wenet#833

There are also papers. You can use google scholar to find them.