Willem Röpke
@willemropke.bsky.social
PhD student | Interested in all things decision-making and learning
I think the Qwen team is missing up on a huge opportunity to basically be the default model in all neurips submissions by not releasing Qwen3
Using LLMs to come up with prompts for LLMs to then ask the LLMs to then train the LLMs to then ....
RIP to my investments from the past few years, it was nice seeing the green while it lasted
I've been bashing my head against a wall trying to make TRL and their new vllm-serve work and holy moly it's just an infinite pain why must i suffer
Why does reading a book feel so much more satisfying than watching a TV show? Both are ways of consuming content so I don't get the difference
Bought a cherry coke on accident today. Horrible things happening everywhere apparently
This is actually insanely clever, I would've never thought about this. Seems very interesting and important to fix!
What happens if we tokenize cat as [ca, t] rather than [cat]? LLMs are trained on just one tokenization per word, but they still understand alternative tokenizations. We show that this can be exploited to bypass safety filters without changing the text itself. #AI #LLMs #tokenization #alignment
I don't recall seeing a video in the recent past that depressed me as much as what I just watched unfolding in the Oval Office
Exciting news! My paper on multi-objective reinforcement learning was accepted at AAMAS 2025! We introduce IPRO (Iterated Pareto Referent Optimisation)—a principled approach to solving multi-objective problems. 🔗 Paper: arxiv.org/abs/2402.07182 💻 Code: github.com/wilrop/ipro
How can I stop ChatGPT from talking to me with emojis, this is just the worst update I've ever experienced. I've put it in its memory, in my details, and I even repeat it in the chat but it's just replying like 👉🥺👈
Macron is the goat French people don't appreciate true genius
Why did OpenAI update chatGPT to use emojis in its responses? I hate it and even when I explicitly say this it just keeps doing it.
To whomever put my email in some spam list: I fart in your general direction
The fact that in the year 2025 we are still dealing with the stupid "make the paper fit in an arbitrary format for the camera ready submission" minigame is killing me. Either let me group authors or let me put acknowledgements after the main text. This isn't hard.
Does anyone have any good hacks for making the AAMAS template not suck for people with multiple affiliations? I lose a gazillion lines for basically no reason...
I found a very promising open problem in AI Computing a MEDIAN over a list of rows where one of the elements is just an empty array
I think this is the best paper I’ve ever read: arxiv.org/abs/2404.03715 A strong emphasis on theoretically principled algorithms for RLHF followed by motivated practical implementations. Well-written and a clear overview of the relevant background and related work. 10/10 no comments
Direct Nash Optimization: Teaching Language Models to Self-Improve with General Preferences
This paper studies post-training large language models (LLMs) using preference feedback from a powerful oracle to help a model iteratively improve over itself. The typical approach for post-training L...
arxiv.org
I realise I'm woefully unqualified on this topic, but can someone please explain why we still don't have personal carrier drones? This seems like an obvious next step in transportation and given the state of our tech tree shouldn't be that hard?
I think we should do congestion pricing in a lot more places
Claude just declined my attempt at bribing it to do a better job. Not sure whether to be happy or sad
I learned to stop reading documentation and just ask ChatGPT So far seems to work out great
I just cooked a chatgpt recipe from some leftovers in my fridge and I gotta say it was delicious. The future is now
Can someone please convince me that buying a 3D printer while living in a small appartement is a good idea?
I'm having a weird problem with training DQN on minatar (specifically the gymnax version). In space invaders and breakout, my eval metrics are extremely unstable while my train metric is very smooth. See an example of space invaders below (eval left, train right). Any ideas of what went wrong?
I just learned that this is allowed in Python. Who do I talk to to get this banned?