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GPT2 and 3 work via autoregression. In chat bots, decoders work via autoregression. > people spend years just post-training BERTs in various ways Yes, I was o
by janalsncm 1mo ago
GPT2 and 3 work via autoregression. In chat bots, decoders work via autoregression.
> people spend years just post-training BERTs in various ways
Yes, I was one of them. That’s not called “post-training” it’s called fine-tuning.
- Yoric 1mo agoAsking out of curiosity, because I have limited experience in that domain. I thought that fine-tuning was changing the weights in the model, not the embedding? Or did I misunderstand?
- janalsncm 1mo agoIt’s both. Fine-tuning a BERT model changes its weights, which causes the embeddings to change. For example you might have one model which embeds a text query and another model which embeds an image. You also have a dataset of image + text captions. Training means updating the weights of those models so that the embedding of the image is close to the embedding of its corresponding caption.