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Jacob Andreas

@jacobandreas

Teaching computers to read.
Assoc. prof @MITEECS / @MIT_CSAIL / @NLP_MIT (he/him).
lingo.csail.mit.edu
web.mit.edu/jda/www
Cambridge, MA Joined March 2007
956 Following 26K Followers 2.9K Posts

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Jacob Andreas @jacobandreas
馃憠 New preprint (we had a big backlog 馃槄)!

Revisiting adversarial imitation learning for the era of RLVR:
Mehul Damani Verified account @MehulDamani2 Jul 3
Higher benchmark scores do not always mean better models for users.

Why? We claim that RL teaches LMs to be correct but not how to be correct: code can pass tests but be unreadable; explanations can be right but unclear.

How do we train LMs to be right in the right way?

(1/n)
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Jacob Andreas @jacobandreas
馃憠 New preprint! (and a direction I'm excited to do more work on soon)
Elinor @elinorpd_ Jul 23
Pluralistic alignment is thriving as a research agenda yet failing at its goal: making the AI systems people actually use more pluralistic馃寛

馃毃New position paper: we argue adoption in deployed models should be the fields main goal & we provide a roadmap of how to get there

馃У1/
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Jacob Andreas @jacobandreas
馃憠 Preprint: understanding learning dynamics & mechanisms in LMs trained to explain / predict their own behaviors!
Carl Guo @CarlGuo866 Jul 1
New Paper 馃搫: LMs just want to explain themselves!
When we SFT an LM on explanations of its own behaviors, do they learn to actually introspect, or do they merely imitate the original training distribution?
We find evidence for the former.

Despite training on a static set of explanations from a base model, the SFT-ed model explains its own current behaviors better than the base model鈥檚 behaviors, tracking behavioral drift even when we don鈥檛 explicitly train it to.

We call this introspective coupling: self-explanations track a model鈥檚 own behavior as that behavior changes, and it shows promise in making introspection training a part of scalable post-training pipelines. 馃У
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Jacob Andreas @jacobandreas
馃憠 New preprint! Automated interpretability by approximating / replacing NN components (here attention heads) with programs.
Amiri Hayes @amirihayes_ Jun 29
What if attention were code? We show that many attention heads in transformer LMs can be replaced by human-readable Python programs.
Swap them in and the model barely notices.

See our experiments here: Explaining Attention with Program Synthesis [arxiv.org/abs/2606.19317]
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