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brandonb
9,339karma·1,335submissions·January 17, 2011
about
Data for good.
Co-Founder at Empirical Health (https://empirical.health). Don't die of heart disease.
Before: Co-Founder @ Cardiogram (ML for heart health)
CTO at Sift Science (YC S11, machine learning to fight fraud)
Data Science @ UCSF Cardiology
HealthCare.gov rescue team
Google (Android speech recognition, search ads ML)
brandonb.cc
recent activity (1,335 total)
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Congrats to Greg on everything he's accomplished! Stripe has always chosen to think different about culture and organization, and as a result have built one of the most interesting companies arou…
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I find the discussion in this thread so frustrating (not your or anybody's fault). It's 2015, and there's still no general agreement on which tests to run to tell if you are healthy or …
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This may be covered in one of the future articles, but how have you found HBase as a storage system and Hadoop as the primary system for data processing? If you could start from scratch, what do you t…
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Thanks for trying it. The notification actually doesn't control the sensor (green light) -- I think the timing was likely just a coincidence. That said, we haven't had a lot of people with G…
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Sure, email me at brandon@cardiogr.am.
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This is really useful! Would you mind emailing me at brandon@cardiogr.am? I'd love to know more.
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Oh! I wrapped up my involvement last fall. It was a 2-month rotation that became 3 months, then 5 months, then 8 months, ... After taking a couple months off, I started collaborating with some UCSF re…
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We have servers that store the raw data and run the algorithms on it, and then it's also synced to Google Fit (on Android) and HealthKit (iOS).
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It does send the data back to GFit! Warning though—the GFit graph isn't necessarily built for this resolution of data. That's part of why we built our own chart to show you the details.
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We do indeed sync the data to Google Fit—so it both reads your activities (walking, running, biking) from Google Fit and any connected apps you have, and writes the raw heart rate measurements back to…
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Well, that's embarrassing. I'm sure both my math and English teachers are shaking their heads right now. Fixed!
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1-3% per day, as measured by the "watch battery" panel in the Android Wear app. (Mine is currently at 1%).
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Way better than I expected—on my Moto 360, total battery consumption is usually 1-2%, and the beta testers have reported the same. In my experience, the biggest optimization you can do for Moto 360 ba…
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We've had surprisingly good experiences—generally the beta testers are reporting 1-3% battery consumption, and I think we could sample more frequently. I think if we can get true, beat-to-beat mo…
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I think Apple Watch is the very next platform, but I've heard good things about the Microsoft Band. How have you found the heart rate sensor?
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That's a frequent feature request, so hopefully soon--the thing I'm not sure of is whether those things are even close enough to accurate to be worth it. I think "guesstimate" is a…
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I have a Moto 360 and like it a lot! It was recently on sale for $180, and I'm going to guess it'll be on sale again, since the Apple Watch is just starting to ship and new Android watches a…
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Hey! I'm the OP. Let me know if you have any questions. Just for fun, this was my heart rate while launching this:
https://twitter.com/AppCardiogram/status/59137786244…
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This is really amazing work. For those of you who read about the genocide and want to understand more of the background, I highly recommend "The Art of Political Murder." It starts in 1998, …
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That's a great idea! You're in kind of a unique situation, so I'm trying to figure out to what extent this idea can apply to your average startup. What were the reasons the Groupon boar…