Cathy Wu
@cathywu.bsky.social
1.5K followers 620 following 180 posts
AI & Transportation | MIT Associate Professor Interests: AI for good, sociotechnical systems, machine learning, optimization, reinforcement learning, public policy, gov tech, open science. Science is messy and beautiful. http://www.wucathy.com
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cathywu.bsky.social
This project was 4 years in the making and it's finally out!

We found that controlling vehicle speeds to mitigate traffic across a city can cut carbon emissions between 11 and 22 percent. To do this, we used deep reinforcement learning to optimize one million eco-driving scenarios. 🚗🤖🧠
Reposted by Cathy Wu
jackstilgoe.bsky.social
I'm gearing up for next week's Hype Studies conference in Barcelona, so I'm thinking about this stuff a lot. @davekarpf.bsky.social makes some great points here, but there's a 'Yes and...'
Tesla's Roadmap to Nowhere
I'll give him this: Elon Musk has a solid grasp of futurity-as-PR.
davekarpf.substack.com
cathywu.bsky.social
Yeah, same deal with navigating a city thanks to google maps
cathywu.bsky.social
I think it goes beyond cost. There’s also talent and the know-how to adapt & implement the tech. For example, I don’t think the public sector has caught up on the last bunch of waves of tech yet, despite it getting commoditized. In general, I think it’s the rich getting richer phenomenon.
cathywu.bsky.social
I've been struggling with this since realizing that the rich and powerful get first dibs on new tech. The only way I've been able to resolve the issue for myself is to deliberately work on applications for the public interest.
cathywu.bsky.social
do you mean cost-benefit of research that's already done?
cathywu.bsky.social
We should be asking ourselves more what research should be done vs what research can be done
infotainment.bsky.social
"Can Large Language Models" returns 8k+ hits on Google Scholar.

"Should Large Language Models" returns 73 hits.

Before asking can...?, ask should...? and you'll save yourself a year's worth of research in some cases.
cathywu.bsky.social
This work would not have been possible without lead author @vindulaj.bsky.social and collaborators Baptiste Freydt, Ao Qu, Cameron Hickert, Edgar Sanchez, Catherine Tang, Mark Taylor, Blaine Leonard, as well as the financial support of UDOT, NSF, and Amazon AWS, and support from MIT SuperCloud.
cathywu.bsky.social
This project was 4 years in the making and it's finally out!

We found that controlling vehicle speeds to mitigate traffic across a city can cut carbon emissions between 11 and 22 percent. To do this, we used deep reinforcement learning to optimize one million eco-driving scenarios. 🚗🤖🧠
Reposted by Cathy Wu
mitcee.bsky.social
A new study led by Prof. Cathy Wu and colleagues reveals that eco-driving measures, such as dynamically adjusting vehicle speeds to reduce stopping and excessive acceleration, can cut carbon emissions between 11 and 22 percent. news.mit.edu/2025/eco-dri...
Eco-driving measures could significantly reduce vehicle emissions
Implementing co-driving techniques, like the use of intelligent speed controls to mitigate congestion at traffic lights, can significantly reduce intersection carbon dioxide emissions without…
news.mit.edu
cathywu.bsky.social
We’ve got an awesome workshop tomorrow at RLC on real-world RL! Also, I’m moderating the panel, so let me know if you have questions about applying RL. 🤖🧠🤖
rl4rsworkshop.bsky.social
📍 The RL4RS Workshop is happening tomorrow at
University of Alberta, as part of @rl-conference.bsky.social.

Join us for a focused day on real-world applications of Reinforcement Learning.

🗓️ Full Schedule: rl4rs.github.io/RL4RS/schedu...

We hope to see you there.
Reposted by Cathy Wu
rl-conference.bsky.social
Propose some socials for RLC! Research topics, affinity groups, niche interests, whatever comes to mind!

rl-conference.cc/call_for_soc...
RLC Call for Workshops
rl-conference.cc
Reposted by Cathy Wu
natolambert.bsky.social
Trying to make Ai2 so effective that people start seriously referring to us as "American DeepSeek" 🙏 lots of hard work to do.
Reposted by Cathy Wu
eugenevinitsky.bsky.social
Hiring a postdoc to scale up and deploy RL-based planning onto some self-driving cars! We'll be building on arxiv.org/abs/2502.03349 and learn what the limits and challenges of RL planning are. Shoot me a message if interested and help spread the word please!

Full posting to come in a bit.
Robust Autonomy Emerges from Self-Play
Self-play has powered breakthroughs in two-player and multi-player games. Here we show that self-play is a surprisingly effective strategy in another domain. We show that robust and naturalistic drivi...
arxiv.org
cathywu.bsky.social
I’ll consider it! Been meaning to start a blog and maybe this is just the push I needed!
cathywu.bsky.social
This is soooooo fun and so blazingly fast.
obsidian.md
Obsidian 1.9.2 (early access) is available with improvements for Bases:

- Formula syntax is more expressive and powerful.
- Added number of results in the current view.
- Table cells with long text expand to show the entire content when selected.
- Operator dropdown for filters is now searchable.
The new formula syntax is more flexible, easier to use, and better suited to extensibility. For those familiar with Javascript, the new syntax should feel familiar. New functions and types are described in our docs.

Some highlights include:

Functions are now object-oriented. Instead of contains(file.name, "Books"), the formula would be file.name.contains("Books").
Functions can now be chained. e.g. property.split(' ').sort()[0].lower()
Property names are no longer wrapped in backticks (`). Instead, to reference properties with spaces or special characters, the syntax is note["Property Name"]
There is a new type system which provides greater control when writing formulas.
New functions, such as link, date and list for converting a value to a different type.
New file properties: file.path, file.links (a list of all internal links in this file), and file.tags (a list of all tags in this file, including frontmatter).
Some functions have been replaced by comparison operators. For example, dateBefore(date1, date2) is now date1 < date2.
Date modifications are now much simpler. Instead of dateModify(date, string), you can use date + string, for example, date("01/01/2025") + "1 year"
For help migrating existing Bases to the new syntax, take a look at the migration guide.
cathywu.bsky.social
I found this insightful and wonder what you think:

“If the objective of meta-science is to determine what are the good ways to perform science, it immediately runs into a major methodological hurdle: it is necessarily going to beg the question.”
cathywu.bsky.social
#metasci or should I say meta metascience
cathywu.bsky.social
I’m incredibly happy to have found metascience bluesky. Science is messy and beautiful, and there is a group of people thinking hard about how and why.
cathywu.bsky.social
I’m pretty shocked. I was just appointed to a serve on a standing committee in April. TRB has definitely helped me find my footing in the field.
alexkarner.bsky.social
TRB is dissolving all committees. This wasn't unexpected, but they're couching it in a technocratic need to "get back to basics" and ease administrative burden when in fact it's a great big shit sandwich that we're all expected to eat and not make a fuss about.