Sign in

Cathy Wu

@cathywu.bsky.social
1.7K followers 621 following 196 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. www.wucathy.com

PostsRepliesMedia
Cathy Wu @cathywu.bsky.social · 08/04/2026
Huge thanks to MIT JTL-Transit Lab for their leadership in forming this program, and for the contributing mentors from my group: Han Zheng Jung-Hoon Cho Yining Ma Wenbin Ouyang Tianyue Zhou
020
Cathy Wu @cathywu.bsky.social · 08/04/2026
Interviews will be held from April 18 to 30, and the program will run from late May to early September. More information and application can be found here, including mentors and specific research topic areas from my group: www.wucathy.com/prospective/
110
Cathy Wu @cathywu.bsky.social · 08/04/2026
Past participants have contributed to impactful research projects across urban systems, operations research, machine learning, and generative AI, with outcomes including top publications and admission to leading graduate programs.
110
Cathy Wu @cathywu.bsky.social · 08/04/2026
This summer program brings together faculty and mentors across MIT, UF, and Northeastern to support students interested in transportation, urban planning, machine learning, generative AI, and optimization for complex systems. The program will be held online and is completely free of charge.
120
Cathy Wu @cathywu.bsky.social · 08/04/2026
I am happy to announce that for the first time my group is participating in the MIT-UF-NEU 2026 Joint Summer Research Camp. Applications are open until April 17. More info in thread and here: www.wucathy.com/prospective/
111
Cathy Wu @cathywu.bsky.social · 27/03/2026
This wouldn't have been possible without an amazing team. Huge shoutout to Han Zheng (lead author), Yining Ma, Brandon Araki, Jingkai Chen, and Symbotic! #DeepRL #Robotics #WarehouseAutomation #AI
010
Cathy Wu @cathywu.bsky.social · 27/03/2026
MIT News: news.mit.edu/2026/ai-syst... Paper (JAIR): jair.org/index.php/ja... Code: github.com/MikeZheng777...
news.mit.edu
AI system learns to keep warehouse robot traffic running smoothly
A new system increases throughput in automated warehouses by adaptively determining which robots should go first to avoid congestion and collisions. The work was led by researchers from MIT and Symbot...
120
Cathy Wu @cathywu.bsky.social · 27/03/2026
Deep RL learns high-level right-of-way priorities, while a fast search solver takes care of low-level path planning. This prevents gridlock on the warehouse floor, achieving ~25% more throughput than hand-crafted rules.
100
Cathy Wu @cathywu.bsky.social · 27/03/2026
If pure AI or pure search isn't working for you, consider learning-guided optimization! This approach combines the best of both worlds; our most recent work demonstrates this for coordinating agents in warehouse robotics.
130
Reposted by Cathy Wu
David Zipper @davidzipper.bsky.social · 17/03/2026
MIT prof @cathywu.bsky.social suspected that nav apps inaccurately calculate “time to arrive,” esp re: parking. In a new paper, she and colleagues built a model to direct urban drivers to garages that best balance proximity and likelihood of an open spot. Result: Drivers could save up to 35 min.
news.mit.edu
Parking-aware navigation system could prevent frustration and emissions
By minimizing the need to drive around looking for a parking spot, this technique can save drivers up to 35 minutes — and give them a realistic estimate of total travel time.
1395
Cathy Wu @cathywu.bsky.social · 23/02/2026
Great fun (and great exercise) this morning with Omar shoveling out the driveway. * Sorry to explain the reference, but friends will know that I've been very interested in eco-driving and its policy implications. news.mit.edu/2025/eco-dri...
news.mit.edu
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 impactin...
000
Cathy Wu @cathywu.bsky.social · 23/02/2026
What's an energy-efficient way to shovel snow? Introducing eco-shoveling*, a two-stage technique to handle snow accumulation, while conserving energy in preparation for more shoveling later... Built to withstand three winter storms.
110
Cathy Wu @cathywu.bsky.social · 22/02/2026
Yeah I think it varies based on context, like big city vs suburbia.
000
Cathy Wu @cathywu.bsky.social · 22/02/2026
There is a mention of it as late as Nov 2024: www.theverge.com/24295933/blu...
theverge.com
Here’s some cool stuff you can do with Bluesky
It’s not just an Alf pics repository.
000
Cathy Wu @cathywu.bsky.social · 22/02/2026
Did something happen to the “my bangers” feed of your top bluesky posts? Is there an alternative?
100
Reposted by Cathy Wu
David Zipper @davidzipper.bsky.social · 20/02/2026
​New research from @cathywu.bsky.social et al. confirms something I've long suspected: Navigation apps could save their users a lot of time — and tilt travel decisions toward transit and biking — if they showed users how long it takes to find parking.
news.mit.edu
Parking-aware navigation system could prevent frustration and emissions
By minimizing the need to drive around looking for a parking spot, this technique can save drivers up to 35 minutes — and give them a realistic estimate of total travel time.
1130183
Cathy Wu @cathywu.bsky.social · 19/02/2026
That's an interesting suggestion!
010
Cathy Wu @cathywu.bsky.social · 19/02/2026
More here: news.mit.edu/2026/parking.... Paper: arxiv.org/abs/2601.00521 Code: github.com/chickert/Pro... Joint work with lead author Cameron Hickert, Sirui Li, Zhengbing He #transportation #multimodal #parking #navigation #dynamicprogramming
news.mit.edu
Parking-aware navigation system could prevent frustration and emissions
By minimizing the need to drive around looking for a parking spot, this technique can save drivers up to 35 minutes — and give them a realistic estimate of total travel time.
060
Cathy Wu @cathywu.bsky.social · 19/02/2026
Our resulting paper, Probability-Aware Parking Selection, shows that doing so can improve travel time estimates, save drivers time by routing them to parking, and make for fairer comparisons across transportation modes! And this work is featured today on the MIT Home Page!
191
Cathy Wu @cathywu.bsky.social · 19/02/2026
Have you noticed how navigation apps include walking & waiting for public transit, but excludes parking & walking for driving? After being late a few times 😅, we finally did. We got curious: what if these apps account for parking?
67934
Cathy Wu @cathywu.bsky.social · 03/02/2026
Please share with anyone who might be a great fit!
000
Cathy Wu @cathywu.bsky.social · 03/02/2026
Join us in our mission to use 𝗔𝗜/𝗠𝗟 𝘁𝗼 𝘁𝗮𝗰𝗸𝗹𝗲 𝗵𝗮𝗿𝗱 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗽𝗿𝗼𝗯𝗹𝗲𝗺𝘀 and to enable 𝗯𝗲𝘁𝘁𝗲𝗿, 𝗲𝘃𝗶𝗱𝗲𝗻𝗰𝗲-𝗱𝗿𝗶𝘃𝗲𝗻 𝗱𝗲𝗰𝗶𝘀𝗶𝗼𝗻𝘀 𝗶𝗻 𝗿𝗲𝗮𝗹-𝘄𝗼𝗿𝗹𝗱 𝘀𝗼𝗰𝗶𝗼𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝘀𝘆𝘀𝘁𝗲𝗺𝘀. 🗓️ Applications are reviewed 𝗼𝗻 𝗮 𝗿𝗼𝗹𝗹𝗶𝗻𝗴 𝗯𝗮𝘀𝗶𝘀, starting immediately. 🔗 Details + how to apply: cathywu.github.io/prospective
cathywu.github.io
Prospective Members
Faster, evidence-based decisions for sociotechnical systems
100
Cathy Wu @cathywu.bsky.social · 03/02/2026
📣 𝗣𝗼𝘀𝘁𝗱𝗼𝗰 𝗼𝗽𝗲𝗻𝗶𝗻𝗴𝘀 𝗶𝗻 𝗺𝘆 𝗴𝗿𝗼𝘂𝗽! I’m looking to hire 𝟭–𝟮 𝗽𝗼𝘀𝘁𝗱𝗼𝗰𝘀 to work with us across the group’s research areas, including: 🤖 Deep reinforcement learning 🚦 Traffic modeling & control 🧠 Neural combinatorial optimization
cathywu.github.io
Prospective Members
Faster, evidence-based decisions for sociotechnical systems
1107
Reposted by Cathy Wu
Jack Stilgoe @jackstilgoe.bsky.social · 05/09/2025
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...'
davekarpf.substack.com
Tesla's Roadmap to Nowhere
I'll give him this: Elon Musk has a solid grasp of futurity-as-PR.
1195
Cathy Wu @cathywu.bsky.social · 29/08/2025
Yeah, same deal with navigating a city thanks to google maps
110
Cathy Wu @cathywu.bsky.social · 19/08/2025
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.
110
Cathy Wu @cathywu.bsky.social · 18/08/2025
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.
190
Cathy Wu @cathywu.bsky.social · 18/08/2025
do you mean cost-benefit of research that's already done?
100
Cathy Wu @cathywu.bsky.social · 18/08/2025
We should be asking ourselves more what research should be done vs what research can be done
1256
Cathy Wu @cathywu.bsky.social · 12/08/2025
Inviting #orms @thserra.bsky.social @vanhentenryck.bsky.social @vidalthi.bsky.social @bistradilkina.bsky.social @akazachk.bsky.social @lawlessopt.bsky.social @annanagurney.bsky.social
030
Cathy Wu @cathywu.bsky.social · 12/08/2025
🔥 New workshop at @neuripsconf.bsky.social! DiffCoALG bridges the gap between classic algorithms & differentiable learning. Think: LLM reasoning, routing, SAT, MIP — neurally optimized. 📌 Submit by Aug 22! 🤖🧠 🔗 sites.google.com/view/diffcoa... #NeurIPS2025
sites.google.com
DiffCoALG@NeurIPS 2025
About this Workshop Combinatorial algorithms are fundamental across a wide range of domains, owing to their ability to model optimization and decision-making tasks under complex constraints. These alg...
1104
Cathy Wu @cathywu.bsky.social · 11/08/2025
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.
030
Cathy Wu @cathywu.bsky.social · 11/08/2025
Website: vindulamj.github.io/eco-drive/ Published paper: www.sciencedirect.com/science/arti... Pre-print: arxiv.org/abs/2408.05609
160
Cathy Wu @cathywu.bsky.social · 11/08/2025
MIT News article: news.mit.edu/2025/eco-dri...
news.mit.edu
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 impactin...
150
Cathy Wu @cathywu.bsky.social · 11/08/2025
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. 🚗🤖🧠
15217
Reposted by Cathy Wu
MIT CEE @mitcee.bsky.social · 11/08/2025
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...
news.mit.edu
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…
022
Cathy Wu @cathywu.bsky.social · 05/08/2025
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. 🤖🧠🤖
030
Reposted by Cathy Wu
Reinforcement Learning Conference @rl-conference.bsky.social · 25/06/2025
Propose some socials for RLC! Research topics, affinity groups, niche interests, whatever comes to mind! rl-conference.cc/call_for_soc...
rl-conference.cc
RLC Call for Workshops
0118
Reposted by Cathy Wu
Nathan Lambert @natolambert.bsky.social · 23/06/2025
Trying to make Ai2 so effective that people start seriously referring to us as "American DeepSeek" 🙏 lots of hard work to do.
3251
Reposted by Cathy Wu
Eugene Vinitsky 🍒 @eugenevinitsky.bsky.social · 21/06/2025
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.
arxiv.org
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...
36025
Cathy Wu @cathywu.bsky.social · 13/06/2025
I’ll consider it! Been meaning to start a blog and maybe this is just the push I needed!
030
Cathy Wu @cathywu.bsky.social · 09/06/2025
This is soooooo fun and so blazingly fast.
000
Cathy Wu @cathywu.bsky.social · 04/06/2025
That is, what constitutes good ways to perform science is necessarily philosophical or based on beliefs. Quote from academia.stackexchange.com/a/17275
academia.stackexchange.com
Are there any documented cases of meta-science or scientific meta-research? Does that have a name?
Research is an activity, a process to obtain knowledge, which has been greatly empowered by the scientific method. We can collect lots of information about research, consider impact factors, etc.
110
Cathy Wu @cathywu.bsky.social · 04/06/2025
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.”
120
Cathy Wu @cathywu.bsky.social · 04/06/2025
Feeling like a fish learning about water. Insightful thread
020
Cathy Wu @cathywu.bsky.social · 04/06/2025
#metasci or should I say meta metascience
030
Cathy Wu @cathywu.bsky.social · 04/06/2025
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.
1191
Cathy Wu @cathywu.bsky.social · 03/06/2025
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.
060
Reposted by Cathy Wu
Carole Voulgaris @voulgaris.bsky.social · 02/06/2025
Organizations and conferences that have the potential to partially fill the void left by TRB (a thread):
61911
Cathy Wu @cathywu.bsky.social · 02/06/2025
I would be remiss not to mention RERITE (www.rerite.org) - which was in the process of integrating into the TRB committee structure
rerite.org
REproducible Research In Transportation Engineering (RERITE) Working Group
020