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In Mathematics, ‘You Cannot Be Lied To’

For Sylvia Serfaty, mathematics is all about truth and beauty and building scientific and human connections.

Looking for rigor in all the wrong places (my talk this Thursday in the Columbia economics department)

Looking for Rigor in All the Wrong Places What do the following ideas and practices have in common: unbiased estimation, statistical significance, insistence on random sampling, and avoidance of prior information? All have been embraced as ways of enforcing rigor but all have backfired and led to sloppy analyses and erroneous inferences. Show More Summary

New approach to measure fluid drag on the body during swimming

(University of Tsukuba) University of Tsukuba researchers developed an approach to measure the amount of active drag from the water to which swimmers are subjected. The approach involves connecting swimmers in a water flume to load cells in front of and behind them, to characterize the forward and backward forces they exert at different flow rates. Show More Summary

Unethical behavior vs. being a bad guy

I happened to come across this article and it reminded me of the general point that it’s possible to behave unethically without being a “bad guy.” The story in question involves some scientists who did some experiments about thirty years ago on the biological effects of low-frequency magnetic fields. Show More Summary

Should the Problems with Polls Make Us Worry about the Quality of Health Surveys? (my talk at CDC tomorrow)

My talk this Thursday at CDC, Tuesday, February 21, 2017, 12:00 noon, 2400 Century Center, Room 1015C: Should the Problems with Polls Make Us Worry about the Quality of Health Surveys? Response rates in public opinion polls have been steadily declining for more than half a century and are currently heading toward the 0% mark. Show More Summary

Blind Spot

X pointed me to this news article reporting an increase in death rate among young adults in the United States: Selon une enquête publiée le 26 janvier par la revue scientifique The Lancet, le taux de mortalité des jeunes Américains âgés...Show More Summary

Accessing the contents of a stanfit object

I was just needing this. Then, lo and behold, I found it on the web. It’s credited to Stan Development Team but I assume it was written by Ben and Jonah. Good to have this all in one place. The post Accessing the contents of a stanfit object appeared first on Statistical Modeling, Causal Inference, and Social Science.

Language and Error-Correcting Codes

Contemplating communication with Claude Shannon -- Read more on ScientificAmerican.com

ComSciCon: Science Communication Workshop for Graduate Students

Nathan Sanders writes: A few years ago, you were kind enough to post a notice on your blog about our science communication conference by grad students, for grad students (ComSciCon). I thought I’d let you know that our program has been...Show More Summary

“Luckily, medicine is a practice that ignores the requirements of science in favor of patient care.”

Javier Benitez writes: This is a paragraph from Kathryn Montgomery’s book, How Doctors Think: If medicine were practiced as if it were a science, even a probabilistic science, my daughter’s breast cancer might never have been diagnosed in time. Show More Summary

Bringing evidence to health screening debates

(Brown University) At a talk and panel discussion in Boston the morning of Feb. 19, Brown University biostatistician Constantine Gatsonis will discuss how big trials help us make sense of our many questions about cancer screening.

Using statistics ethically to combat 'a scientific credibility crisis'

(Georgetown University Medical Center) Can statistics increase the value of science to society? Georgetown University's Rochelle Tractenberg, chair of the Committee on Professional Ethics of the American Statistical Association, will...Show More Summary

Pizzagate and Kahneman, two great flavors etc.

1. The pizzagate story (of Brian Wansink is a Cornell University business school professor and self-described “world-renowned eating behavior expert for over 25 years”) keeps developing. Last week someone forwarded me an email from the deputy dean of the Cornell business school regarding concerns about some of Wansink’s work. Show More Summary

Distributive Laws

An expository account of Beck's "Distributive Laws" paper written for the Kan Extension Seminar

Digital fabrication in architecture

(ETH Zurich/Swiss Federal Institute of Technology) Society faces enormous challenges in constructing high-quality, future-oriented built environments. Construction sites today look much like the building sites did at the beginning of the 20th century. Show More Summary

Vine regression?

Jeremy Neufeld writes: I’m an undergraduate student at the University of Maryland and I was recently referred to this paper (Vine Regression, by Roger Cooke, Harry Joe, and Bo Chang), also an accompanying summary blog post by the main author) as potentially useful in policy analysis. Show More Summary

Krzysztof Sakrejda speaks in NYC on Bayesian hierarchical survival-type model for Dengue infection

Daniel writes: Krzysztof Sakrejda is giving a cool talk next Tues 5:30-7pm downtown on a survival model for Dengue infection using Stan. If you’re interested, please register asap. Google is asking for the names for security by tomorrow...Show More Summary

Workshop on German national educational panel study

Jutta von Maurice of the Leibniz Institute for Educational Trajectories in Germany writes: In August this year, we plan to hold a user workshop in New York. We have data on educational processes and competence development from early childhood till late adulthood (n=60.000) and these data might be of special interest for international comparisons. Show More Summary

Combining results from multiply imputed datasets

Aaron Haslam writes: I have a question regarding combining the estimates from multiply imputed datasets. In the third addition of BDA on the top of page 452, you mention that with Bayesian analyses all you have to do is mix together the simulations. Show More Summary

Preferential trade agreements enhance global trade at the expense of its resilience

(International Institute for Applied Systems Analysis) The global commodity trade is a complex system where its network structure, which may arise from bilateral and multilateral agreements, affects its growth and resilience. At time of economic shocks, redundancy in this system is vital to the resilience of growth.

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