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Computational oncology done right. Powered with Stan. Techstars NYC '17. Calibrated Webcast: https://teapaw.org/t.co/GNx4TcndME

New York, NY
Joined February 2016
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The Within-Orbit Adaptive Leapfrog No-U-Turn Sampler. WALNUTS adapts effectively to local curvature ...Moreover, WALNUTS successfully fits complex hierarchical Bayesian models that standard NUTS fails to handle reliably arxiv.org/pdf/2506.18746
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We are hiring! @GenerableHQ is looking for a data scientist to join our team! Details here: linkedin.com/jobs/view/32353… Help us in our mission to improve drug development in oncology using Bayesian inference. #RStats #RLadies #rstatsnyc @mcmc_stan
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If you missed our Webcast with Lizzie Wolkovich about Climate Science, @mcmc_stan, and Bayes, the video is now available. youtu.be/gKWedtPjyQE
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Our Webinar with @eleafeit and Hongjun Ye has just been uploaded to YouTube. Gaussian Processes, Conjoint Models, and other goodness. Check it out! youtu.be/bnyykZJGuHA
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If you missed my conversation with Tamara Broderick and her talk titled "Fast Discovery of Pairwise Interactions in High Dimensions using Bayes", the video is now available. youtu.be/7vFc3V6vC0U
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In case you missed it, @paulbuerkner's brms talk is now on YouTube: youtu.be/1qeXD4NQ4To
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Join me and @paulbuerkner (University of Stuttgart) on Wednesday, April 14 at 12 PM EDT for a conversation and webinar: "An introduction to Bayesian multilevel modeling with brms". hopin.com/events/an-introduc…
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Thanks to @ShalitUri for hosting me at Technion on Sunday! I enjoyed sharing the Bayesian workflow and bits of @mcmc_stan code with the students including a dog who stayed for the whole lecture.
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Automatic differentiation is a technique for computing derivatives of computer programs by reducing them to elementary operations and using the chain rule. A very readable introduction by Carpenter et al. (2015) pages 1-5 arxiv.org/abs/1509.07164
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Surprised by the Gambler’s and Hot Hand Fallacies? A Truth in the Law of Small Numbers by Joshua B. Miller and Adam Sanjurjo. papers.ssrn.com/sol3/papers.…
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IJ Good on inferior methods and fashions in statistics.
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Probability Integral Transform: when we feed a random variable generated from some distribution through its own CDF, we get back Uniform(0,1). gist.github.com/ericnovik/02…
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Whirlwind tour of Boston starts today. 3 talks, 3 days. Testing @mcmc_stan at the IBM AI Systems Day, @GenerableHQ's use of @mcmc_stan for a @pfizer seminar, and some of what makes Stan special at #PROBPROG.
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Frequentist inference sets up a loss function as part of the inference (optimization) algorithm and consequently your decision analysis is locked in. Bayesian analysis admits infinite number of loss functions -- after all we all have different risk/reward preferences, costs, etc
For two probabilistic predictions, say from a posterior predictive distribution, we prefer the one with narrower uncertainty intervals (sharper) for the same level of calibration. See "Probabilistic forecasts, calibration and sharpness" by Gneiting et al. stat.washington.edu/raftery/…
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A horseshoe prior encodes a very Bayesian idea of a compromise between global and local shrinkage effects and often outperforms LASSO as demonstrated by Juho Piironen and Aki Vehtari in "Sparsity ... horseshoe and other shrinkage priors." arxiv.org/abs/1707.01694
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Variational Inference (VI) is a technique for approximating the posterior distribution with another distribution, where the degree to which these distributions differ is measured using KL divergence. Paper by David Blei et al.: arxiv.org/pdf/1601.00670.pdf
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Visualization in Bayesian workflow paper by Jonah Gabry et al. showing the importance of simulating from the prior predictive distribution. arxiv.org/abs/1709.01449
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The original NUTS (No-U-Turn Sampler) paper by Matt Hoffman and Andrew Gelman demonstrates the efficiency of the NUTS sampler relative to the vanilla HMC. arxiv.org/abs/1111.4246