Frank Harrell

@f2harrell

Prof, Founding Chair of Biostatistics, Vanderbilt U. Expert Statistical Advisor, Office of Biostatistics, FDA CDER. Blog: Statistical Thinking -fharrell.com

Nashville, TN
biostat.mc.vanderbilt.edu/FrankHarrell
Đã tham gia tháng 1 năm 2017
154 Ảnh và video Ảnh và video

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  1. đã Tweet lại
    19 giờ trước

    1. Shut down 2. Jail key decision makers and possibly some of the engineers involved 3. Give the money back to the people it abused (its users) 4. Build ethical replacements for its useful bits

    1 replies 3 tweet lại 17 thích
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  2. 16 giờ trước

    Glad that has restarted this hot discussion on datamethods. I just posted a response that tries to generalize the question.

    Đang trả lời @RogueRad @f2harrell và 6 người khácĐang trả lời @RogueRad @f2harrell và 6 người khác
    Topic created here:
    3 tweet lại 9 thích
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  3. đã Tweet lại
    19 thg 12

    Statistically, machine learning has poor modeling practices which should limit generalizability. It doesn't. Why? For tasks like image recognition, all humans on the ML team understand ground truth; in healthcare/science tasks, it won't be the same. We can expect lots of failure.

    9 replies 28 tweet lại 135 thích
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  4. đã Tweet lại
    23 giờ trước

    My Christmas present for the community: 2.7 is now on CRAN extending support for Gaussian processes and fixing a substantial performance bug in some post-processing methods among other new features and improvements.

    4 replies 71 tweet lại 233 thích
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  5. đã Tweet lại
    17 thg 12

    Please read—well worth your time. Challenges of Non–Intention-to-Treat Analyses | Research, Methods, Statistics | JAMA | JAMA Network

    4 tweet lại 17 thích
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  6. đã Tweet lại
    17 thg 12

    It's a big stretch to put such a positive spin on the wastage of resources that occurs when the scientific pathway is led astray building upon results that can't be replicated.

    “It’s not a replication crisis. It’s an innovation opportunity” Australian cancer researcher Glenn Begley about reproducibility and the meaning of failure in science
    2 tweet lại 3 thích
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  7. 17 thg 12

    Glad to see questionable research practices elevated with respect to severity of harm to science

    Is it time for a new classification system for scientific misconduct?
    3 tweet lại 10 thích
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  8. đã Tweet lại
    17 thg 12

    A+ beautiful, a grand achievement by it is wonderful to see Byrne on clean background, all the original copies I saw over the years all had extensive foxing. In my Envisioning Information, we fully rebuilt 2 Byrne pages, hand-separated colors for printing.

    I recreated Byrne's 1847 edition of Euclid's Elements including interactive diagrams, cross references, and a new poster of all the original illustrations: Plus an in-depth blog post on how it was made:
    1 replies 17 tweet lại 78 thích
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  9. đã Tweet lại
    16 thg 12

    Let me get this straight: Sears has $25 million laying around to pay out executives who ran the company into the ground, but doesn't have any money to give the thousands of workers they laid off severance pay?

    Sears bankruptcy court OKs $25 million in bonuses for top execs
    3.712 replies 32.251 tweet lại 76.942 thích
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  10. đã Tweet lại
    15 thg 12

    Tonight’s ruling creates confusion, puts affordable health insurance at risk, and targets Americans with pre-existing conditions. The Supreme Court already upheld the law’s constitutionality — twice. Sign up tonight for 2019 coverage at .

    5 replies 53 tweet lại 105 thích
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  11. đã Tweet lại
    14 thg 12

    "It took more than a half century to reach the point where faced with a choice between democracy and power, the party chose the latter," argues George Packer.

    325 replies 5.246 tweet lại 8.712 thích
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  12. đã Tweet lại
    14 thg 12

    Didn’t he impeach Bill Clinton over the same thing?

    Lindsey Graham: I’m fine with Trump "lying about sex"
    7.712 replies 34.259 tweet lại 179.392 thích
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  13. đã Tweet lại
    14 thg 12

    A couple days ago another team asked me to speak about Bayesian data analysis. I decided that instead of doing a nuts/bolts of how to fit/use Bayesian models, I would describe "Bayesian analysis: The Good Parts". <potentially controversial thread>

    17 replies 231 tweet lại 814 thích
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  14. đã Tweet lại
    13 thg 12

    Not that this is terribly surprising, but still an important message for all to hear.

    0:38
    In the U.S., law enforcement officers kill more than 1,000 civilians each year. New research shows that people who live in states with high gun ownership are much more likely to be shot and killed by police than those in low-gun states
    1 replies 5 tweet lại 2 thích
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  15. đã Tweet lại
    12 thg 12

    Invite others to submit their lists of prevalent faux-pas' compromising reliable evidence generation.

    Value-based Healthcare: analytics may be leaving value on the table
    2 tweet lại 1 thích
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  16. đã Tweet lại
    12 thg 12

    Hi everyone. It’s been awhile since I’ve had a good old-fashioned methods critique, but I'm feeling it today:

    4 replies 28 tweet lại 98 thích
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  17. 12 thg 12

    Many Analysts, One Data Set – many conclusions - good discussion continues. Hope that joins in -

    2 replies 17 tweet lại 53 thích
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  18. 11 thg 12

    Favorite way to picture probabilities: not with stick figures or frequencies but with a thermometer plot (example below is taken from )

    1 replies 9 tweet lại 29 thích
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  19. 11 thg 12

    Statistician take of the day: A $100 data analysis can make a $1,000,000 study worth $1,000.

    4 replies 20 tweet lại 127 thích
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  20. 11 thg 12

    What the GOP stands for ...

    1 replies 6 thích
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