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
Iscrizione a gennaio 2017
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  1. ha ritwittato
    19 ore fa

    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

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  2. 16 ore fa

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

    In risposta a @RogueRad, @f2harrell e altri 6
    Topic created here:
    3 Retweet 9 Mi piace
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  3. ha ritwittato
    19 dic

    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 risposte 28 Retweet 135 Mi piace
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  4. ha ritwittato
    23 ore fa

    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 risposte 71 Retweet 233 Mi piace
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  5. ha ritwittato
    17 dic

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

    4 Retweet 17 Mi piace
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  6. ha ritwittato
    17 dic

    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 Retweet 3 Mi piace
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  7. 17 dic

    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 Retweet 10 Mi piace
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  8. ha ritwittato
    17 dic

    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 risposta 17 Retweet 78 Mi piace
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  9. ha ritwittato
    16 dic

    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 risposte 32.251 Retweet 76.942 Mi piace
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  10. ha ritwittato
    15 dic

    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 risposte 53 Retweet 105 Mi piace
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  11. ha ritwittato
    14 dic

    "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 risposte 5.246 Retweet 8.712 Mi piace
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  12. ha ritwittato
    14 dic

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

    Lindsey Graham: I’m fine with Trump "lying about sex"
    7.712 risposte 34.259 Retweet 179.391 Mi piace
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  13. ha ritwittato
    14 dic

    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 risposte 231 Retweet 814 Mi piace
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  14. ha ritwittato
    13 dic

    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 risposta 5 Retweet 2 Mi piace
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  15. ha ritwittato
    12 dic

    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 Retweet 1 Mi piace
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  16. ha ritwittato
    12 dic

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

    4 risposte 28 Retweet 98 Mi piace
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  17. 12 dic

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

    2 risposte 17 Retweet 53 Mi piace
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  18. 11 dic

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

    1 risposta 9 Retweet 29 Mi piace
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  19. 11 dic

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

    4 risposte 20 Retweet 127 Mi piace
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  20. 11 dic

    What the GOP stands for ...

    1 risposta 6 Mi piace
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