Archive for Technion

pooling or not pooling

Posted in Books, Kids, pictures, Statistics, University life with tags , , , , , , , , , , on September 22, 2020 by xi'an

A pro-pooling opinion tribune, followed a few days later, by a collection of opinions on pooling PCR samples to absorb the overload in testing laboratories and produce results in a delay that is short enough for public health impacts.  Le Monde is taking sample pooling most seriously! This includes a link to an April article by Christian Grollier and Olivier Gossner (CREST) published in COVID economics (!), recalling the basics of sample pooling and citing a Technion experiment to show the approach is feasible in practice. With a recommended pool of 80 patients if the prevalence is 2%. And of 30 for a prevalence of 5%. Despite the approach being implemented in other countries, and considerable delays in analysing the PCR samples, the conclusion of the French public health authorities is that it is urgent to wait..!

Reuven Rubinstein (1938-2012)

Posted in Statistics with tags , , , , , , , , on December 10, 2012 by xi'an

I just learned last night that Professor Reuven Rubinstein passed away. While I was not a close collaborator of him, I met Reuven Rubinstein a few times at conferences and during a short visit to Paris, and each time learned from the encounter. I also appreciated his contributions to the field of simulation, esp. his cross-entropy method that culminated in the book The Cross-Entropy Method with Dirk Kroese. Reuven was involved in many aspects of simulation along his prolific career, he will be especially remembered for his 1981 book Simulation and the Monte Carlo Method that is arguably the very first book on simulation as a Monte Carlo method. This book had a recent second edition, co-authored with Dirk Kroese as well. It is thus quite a sad day to witness this immense contributor to the field leave us. (Here is a link to his webpage at Technion, including pictures of a trip to the Gulag camp where he spent most of his childhood.) I presume there will be testimonies about his influence at the WSC 2012 conference here in Berlin.