James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile
James Johndrow, Ph.D.

@jamesjohndrow

Assistant Professor of Statistics at UPenn. Ex biologist. Interested in Markov chains, population estimation, Bayes, applications. Dad, husband, cyclist.

ID: 614719680

linkhttp://www.jamesjohndrow.com calendar_today21-06-2012 22:44:32

127 Tweet

274 Followers

88 Following

Steve Thorn šŸ¦‹ (@drthorn) 's Twitter Profile Photo

Refreshing lecture by David Dunson on "Machine learning for scientific inferences: Debunking the hype". Interested to see that work to remove bias from ML is making progress thanks to Kristian Lum and James Johndrow, Ph.D. arxiv.org/abs/1703.04957

James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile Photo

Publishing your paper in a Taylor and Francis journal that even Stanford apparently doesn't pay for and also not putting a manuscript on arXiv is a great way to make sure your work has zero impact.

Nathaniel Raymond (@nattyray11) 's Twitter Profile Photo

I wish you’d called us Harvard Humanitarian Initiative @HHI_Signal first. This isn’t what the disaster relief field needs right now. In fact, sector needs investments in how to use tech we’ve got/use tech less. Most pressing challenges are all about political will, protection, human rights, not more code x.com/developerworks…

Dave Gray (@davegray) 's Twitter Profile Photo

Google discovered that giving every employee a credit card and trusting them to follow policy on expenses, even with some bad actors, was cheaper than the enforcement and structures most companies use. How much do you waste due to low trust? Can you do the math for your company?

James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile Photo

Funny but not so true anymore. Post selective inference is largely figured out for forward stepwise, see statweb.stanford.edu/~tibs/ftp/spac…. Of course causal inference always requires something more but it seems odd to pick on forward stepwise given recent developments. x.com/edwardtufte/st…

James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile Photo

This headline from The Hill is embarrassing. I get that they're quoting someone but I thought part of the point of journalism is not to publish things that are wrong. Headline should read "pollster doesn't understand probability, blames FiveThirtyEight" x.com/NateSilver538/…

Kristian Lum (@kldivergence) 's Twitter Profile Photo

Getting excited for #jsm2018. Come say hi if you want to talk about algorithmic fairness, stats for human rights, (gender-based) harassment in our field, OR if you want to tell me about your own research! I’d love to hear about it.

Kristian Lum (@kldivergence) 's Twitter Profile Photo

Great crowd here at #jsm2018 at the session on interpretable ML models.... and we snuck in a talk on fairness. 😁 If you’re interested in this topic, consider submitting to/attending FAT*! x.com/fatconference/…

Great crowd here at #jsm2018 at the session on interpretable ML models.... and we snuck in a talk on fairness. 😁 If you’re interested in this topic, consider submitting to/attending FAT*! 

x.com/fatconference/…
Barbara Engelhardt (@beengelhardt) 's Twitter Profile Photo

Snow day today; called it yesterday evening based on predictive modeling. I’d like to invite the people who convinced the world that Machine Learning has solved predictive problems to come over and hang out w/ my four very hyper & disappointed kids. #stopthehype #keeptheirtrust

Snow day today; called it yesterday evening based on predictive modeling. I’d like to invite the people who convinced the world that Machine Learning has solved predictive problems to come over and hang out w/ my four very hyper & disappointed kids. #stopthehype #keeptheirtrust
Judea Pearl (@yudapearl) 's Twitter Profile Photo

Robin Gomila 1/ I think the sentence: "I draw on econometric theory and established statistical findings to demonstrate that linear regression (OLS) is generally the best strategy to estimate causal effects on binary outcomes" will make some economists rethink if "Almost Harmless" is truly

James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile Photo

We’ve been working on a number of projects with interdisciplinary teams of people at Penn including at the hospital. Check out the latest.

James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile Photo

Turns out you can get acceptable linear algebra performance in #rstats if you build from source. Still much slower than #julialang but at least not orders of magnitude slower.

James Johndrow, Ph.D. (@jamesjohndrow) 's Twitter Profile Photo

Definitely critical if you want to do fast numerical linear algebra. Now no one has an excuse for not having mkl. Thanks for doing this Dirk Eddelbuettel ! x.com/eddelbuettel/s…