
Joseph Jay Williams
1.2K posts

Joseph Jay Williams
@josephjwilliams
Professor in human computer interaction, applied AI/ML, statistics, psychology. Won $1M Xprize (https://t.co/JtjvdkSVUR) for Societally Beneficial Adaptive Experiments!
Toronto, Ontario Katılım Mayıs 2012
3.1K Takip Edilen1.5K Takipçiler
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“Is the internet replacing teachers?” My .@TEDx talk gives one perspective bit.ly/1TCwTx9 #edtech #mooc
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@sama Pithy, true, and hilarious 😂.
Stanford, CA 🇺🇸 English

Today we are launching my favorite feature of ChatGPT so far, called Pulse. It is initially available to Pro subscribers.
Pulse works for you overnight, and keeps thinking about your interests, your connected data, your recent chats, and more. Every morning, you get a custom-generated set of stuff you might be interested in.
It performs super well if you tell ChatGPT more about what's important to you. In regular chat, you could mention “I’d like to go visit Bora Bora someday” or “My kid is 6 months old and I’m interested in developmental milestones” and in the future you might get useful updates.
Think of treating ChatGPT like a super-competent personal assistant: sometimes you ask for things you need in the moment, but if you share general preferences, it will do a good job for you proactively.
This also points to what I believe is the future of ChatGPT: a shift from being all reactive to being significantly proactive, and extremely personalized.
This is an early look, and right now only available to Pro subscribers. We will work hard to improve the quality over time and to find a way to bring it to Plus subscribers too.
Huge congrats to @ChristinaHartW, @_samirism, and the team for building this.
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Joseph Jay Williams retweetledi

I learned a while ago that, in Italian, it’s not “kill two birds with one stone”, but “feed two birds with one hand”. Much nicer!
Prof Sarah-Jayne Blakemore@sjblakemore
I was explaining to my Ukrainian colleague the phrase ‘There’s no such thing as a free lunch’. She told me the equivalent in Ukrainian is ‘The only free cheese is in the mousetrap’ - which is so much better
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@greggoriesmom @erikbryn @paulg That's a good question. I would hypothesize it happens throughout life. What is remarkable is that your mental and physical functioning can be improved throughout your entire life, by this kind of exercise. You can Google the term health span, which is a nice contrast to lifespan
Toronto, Ontario 🇨🇦 English

@julianzhang_jz @erikbryn Can you explain more about the 5 to 10 minutes of strength training? Ideally things that don't require equipment and there is an existing simple video people can follow along?
Toronto, Ontario 🇨🇦 English

That’s phenomenal.
Here’s my plan:
1. 80% of my workout time is zone 2 cardio on a Concept2 rowing machine.
2. 20% is zone 4–5, also on the rower—high-intensity interval sessions.
3. 5–10 minutes of strength training per day (following Apple Fitness+).
4. 1 long hike every 1–2 weeks.
I use an Apple Watch Ultra and WHOOP band for data tracking.
For data analysis, I use Intervals.icu and Strava.
For exercise and health coaching, I use o3 and Gemini 2.5 Pro.
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@DKThomp Thank you for this precise coverage of a really important idea, that can make 8 billion people's lives healthier and happier!
Toronto, Ontario 🇨🇦 English

New TSMP: EXERCISE AS MIRACLE DRUG
Two big studies in the last 12 months:
1. Euan Ashley, the chair of medicine at Stanford, and a team of bioinformatics researchers put rats on treadmills, cut into their tissues, and found that exercise basically improved every measurable system, including metabolism, mitochondrial function, immunity, inflammation, and tissue-specific adaptation. He has estimated that "one minute of exercise, on average, extends one's life by five minutes."
2. In a recent NEJM study, 900 patients who had undergone surgery on their advanced colon cancer were randomly assigned to two groups: a “structured exercise program" vs. a control group. The exercise group saw “significantly” more years without cancer, a 7 percentage point increase in the overall survival rate after 8 years, and a dramatic reduction in new primary cancers.
The MAHA movement, and RFK's weird antagonism toward vaccines and therapies, has polarized aspects of healthy living as anti-science woo-woo, in some circles, But exercise is probably the single most potent medical invention ever devised—more broadly effective, at a population level, than any medicine discovered in the natural world or created in a laboratory.


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Joseph Jay Williams retweetledi

A gentle reminder that TMLR is a great journal that allows you to submit your papers when they are ready rather than rushing to meet conference deadlines. The review process is fast, there are no artificial acceptance rates, and you have more space to present your ideas in the main body.
And by the way, if you have experience reviewing for ML conferences and want to become a TMLR reviewer, please get in touch and share your email address. TMLR doesn't assign more than 1 submission at a time, and you can limit how many papers per year you get to review.
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@roydanroy Maybe it's helpful to link to the application?
Toronto, Ontario 🇨🇦 English

To clarify, I'm talking about faculty and industry-based researchers, based outside Canada, interested in faculty positions in Canada.
I encourage those looking for postdoctoral and PhD opportunities to apply to Vector's twice annual postdoctoral fellowship calls and thrice annual research internship calls.
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Can you elaborate on the context and the point you're sharing? Eg do you mean a practical goal in expt design?
I'm curious as I develop applications and algorithms for adaptive experiments, using reinforcement learning (Bayesian bandits). HCI, education, mental health, chemistry and materials Science. tiny.cc/williamsresear…
Toronto, Ontario 🇨🇦 English

the most succinct and informative figure demonstrating the relationship between academic science and biotechs by @yisongyue

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Joseph Jay Williams retweetledi

Why is academic computer science (an applied field) so enthralled with conceptual purity? Is it because we've achieved similar status but still envy "purer" displines? Are we threatened by interdisclinarity from within as we infiltrate so many other fields?
Andrew Gelman et al.@StatModeling
Is conceptual purity the defining aesthetic in academic computer science? statmodeling.stat.columbia.edu/2025/03/13/is-…
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@AndyHazelton @ChuckySmiths Thanks for your useful characterization of the communication: between people in a specific discipline, and the broader public!
Trinidad and Tobago 🇹🇹 English

@ChuckySmiths Haha so one of the reasons I've stayed on Twitter is that I really enjoy the interaction with both experts and the public. I don't necessarily just want an echo chamber; I want to communicate the value of what we do with a wide audience. It may get too toxic at some point.
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Joseph Jay Williams retweetledi

Are you a junior faculty member interested in spending 2-4 weeks at Princeton Psych? Please apply for our Microsabbatical program! It’s a fully funded visit for professional development and creating long-term collaborations.
psych.princeton.edu/diversity/micr…
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📣 New Podcast! "Q: How do you define dimensions along which your collection, activity is unusually good? Scientist Sharing Conversations" on @Spreaker spreaker.com/episode/q-how-…
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Joseph Jay Williams retweetledi

@archit_sharma97 Reminds me the story when an intern was assigned to “solve computer vision” in one summer back in 1966
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Joseph Jay Williams retweetledi

@mmbronstein What is the other app? Provide a link for easy access/following? Maybe that will take it to 9%!
Toronto, Ontario 🇨🇦 English

Q: How can you use cold exposure and other discomfort to enhance your work performance?
A1: Do something uncomfortable that you don't feel like doing, and use cognitive coupling to visualise some work task that you might put off or not want to engage it. For example, to start on an important presentation instead of checking email. Or to have a conversation you don't want to have but it's important.
Toronto, Ontario 🇨🇦 English



