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stephenroller

HN member
Joined
Sun, Aug 25, 2019, 6:53 PM UTC
HN karma
125
Public activity
25 items

About stephenroller

CharacterAI. Previously Facebook AI Research, working mostly on large language models.

https://stephenroller.com

Recent public activity

  1. comment
    Comment #45443475

    with hf transformers, you still need to manage GPUs

  2. comment
    Comment #41025864

    Why did the share of childless women 35-44 suddenly drop 5 points around 2012? Such a massive difference must be a change in measurement methodology?

  3. comment
    Comment #37387094

    The llama1 team did not have a validation set. I don’t know what the Llama2 team did - I left before seeing any of the details. My guess is Llama2 upsamples Wikipedia a good bit, b…

  4. comment
    Comment #37386663

    One noteworthy thing is that no one is posting validation curves, only training curves. All these models will happily bring training loss eventually to near zero with infinite comp…

  5. comment
  6. comment
    Comment #32359593

    Updating the model happens offline to ensure protections of this. As part of the research on BlenderBot 3 we also have improved detections for safety and can learn from "trolls." h…

  7. comment
    Comment #31254508

    We trained on Reddit comments and HackerNews comments.

  8. comment
    Comment #26530759

    I run a fairly large open source project ( https://github.com/facebookresearch/ParlAI/ ) and we use mypy. Our experience has been that it can be quite difficult to placate, so we u…

  9. comment
    Comment #26452285

    https://github.com/pytorch/fairseq/pull/3331 and https://github.com/pytorch/fairseq/pull/3327

  10. comment
    Comment #26447730

    Support for this was also added to [Fairscale]( https://fairscale.readthedocs.io/en/latest/ ) and [Fairseq]( https://github.com/pytorch/fairseq ) last week. In particular, the Fair…

  11. comment
    Comment #25258039

    They don't. But half the people got a placebo and half got the vaccine. 185 in the placebo group got covid, with 30 having severe covid, but 11 with covid and 0 severe in the vacci…

  12. comment
    Comment #24854385

    Streets would be much more useful than a true north compass.

  13. comment
    Comment #24456961

    Perhaps you are outside the United States? PBS is the public television channel, so perhaps they geolock :(

  14. comment
    Comment #23894653

    The dataset can be obtained around the web. It's mostly CommonCrawl, Reddit, Toronto Book Corpus, and Wikipedia. You can find a very comparable corpus open sourced and easy to use …

  15. comment
    Comment #23889345

    No, they aren't releasing the weights. They are releasing it as ML as a service. Right now it's in free beta, but it will open up for commercial usage in the future. On another not…

  16. comment
    Comment #23095978

    I would not encourage using the model for anything other than AI research -- we're still in the early days of dialogue, and there are a lot of unexplored avenues. There are still n…

  17. comment
    Comment #23095603

    (BlenderBot original developer here) You can read the paper here, which contains much more technical details of how we built it: https://arxiv.org/abs/2004.13637

  18. comment
    Comment #23095360

    Hi there, thanks for asking! It's very cool to make research more accessible. Would you be able to rename your experience to "Modified Small BlenderBot without Safety Layer"? And I…

  19. comment
    Comment #23094993

    Hi there. One of the original authors of the BlenderBot paper here. This cocohub website is not what we released. It appears that cocohub has removed our safety layer and provided …

  20. comment
    Comment #22503244

    Embeddings tables aren't hard on the GPU (being only a lookup table), and the output softmax still requires you do the full matrix-multiply. The label may be sparse, but the comput…

  21. story
  22. comment
    Comment #20795392

    We limited the scope of our study to the PersonaChat dataset, which is a standard benchmark in dialogue. In PersonaChat, both participants are presented with Personas and asked to …

  23. comment
    Comment #20795287

    Yes, that's a great response for one of the models to have. :)

  24. comment
    Comment #20795249

    We originally set out to see whether we could use conditional generation to sort of adjust the behavior of these neural generative dialogue systems. Much of the original idea was a…

  25. comment
    Comment #20794756

    Co-author of the original paper, if you have any questions.