How could I get the topic embeddings？

[broboboo]

Hello!
How could I get the topic embeddings, which is mentioned as alpha in the ETM original paper?
Thanks and waiting for your response!

[lfmatosm]

Hi @broboboo, how are you?
Thanks for your question. Currently, there's no method to retrieve the topic embeddings. They are initially defined here:

embedded-topic-model/embedded_topic_model/models/model.py

Line 44 in 7199607

self.alphas = nn.Linear(rho_size, num_topics, bias=False)

I'm currently on a deadline in other projects, but as soon as I can, I will update the package to address this shortcoming.
I'm also open for pull requests, so feel free if its your cup of tea :)

[broboboo]

Thanks for your answer！
I found i can get the topic embeddings by this：
topic_embeddings = etm_instance.model.alphas.weight.detach().cpu().numpy()
Is this correct?
Thank you！

[lfmatosm]

@broboboo yes, that's correct. Sorry for the delay.