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(This article was originally published at R – Xi'an's Og, and syndicated at StatsBlogs.) A geometric Le Monde mathematical puzzle: Given a pizza of diameter 20cm, what is the way to cut it by two perpendicular lines through a point distant 5cm from the centre towards maximising the surface of two opposite slices?  Using the same point as the tip of the four slices, what is the way to make four slices with equal arcs in four cuts from the tip again towards maximising the surface of two opposite slices? For both questions, I did not bother with the maths but went itself [...]
Thu, Jul 27, 2017
Source: Statistics Blog
A geometric Le Monde mathematical puzzle: Given a pizza of diameter 20cm, what is the way to cut it by two perpendicular lines through a point distant 5cm from the centre towards maximising the surface of two opposite slices?  Using the same point as the tip of the four slices, what is the way to make four slices with equal arcs in four cuts from the tip again towards maximising the surface of two opposite slices? For both questions, I did not bother with the maths but went itself to a discretisation of the disk, counting the proportion of points within two [...]
Thu, Jul 27, 2017
Source: Xian Blog
(This article was originally published at Psychological Statistics, and syndicated at StatsBlogs.) I am pleased to announce booking is now open for the end of Prior Exposure grant conference on Bayesian Data Analysis in the Social Sciences Curriculum on 29th September. We are still finalising the programme but have confirmed contributions from Richard Morey (University of Cardiff), Zoltan Dienes (University of Sussex) and Daniel Lakens (Eindhoven University of Technology) as well as presentations from Mark Andrews and myself.We are also inviting seeking submissions from PhD students and others - on using and teaching Bayes. Booking for the final round of workshops [...]
Thu, Jul 27, 2017
Source: Statistics Blog
(This article was originally published at Statistical Modeling, Causal Inference, and Social Science, and syndicated at StatsBlogs.) Carol Nickerson pointed me to a new article by Arie Kruglanski, Marina Chernikova, Katarzyna Jasko, entitled, “Social psychology circa 2016: A field on steroids.” I wrote: 1. I have no idea what is the meaning of the title of the article. Are they saying that they’re using performance-enhancing drugs? 2. I noticed this from the above article: “Consider the ‘power posing’ effects (Carney, Cuddy, & Yap, 2010; Carney, Cuddy, & Yap, 2015) or the ‘facial feedback’ effects (Strack, Martin, & Stepper, 1988), both [...]
Thu, Jul 27, 2017
Source: Statistics Blog
Filed under: pictures, Running, Travel, University life Tagged: Baltic Sea, boats, EMS 2017, Finland, Gulf of Bothnia, Helsinki, jatp, orthodox cathedral, sunrise [...]
Thu, Jul 27, 2017
Source: Xian Blog
Yesterday, two papers on bouncy particle samplers simultaneously appeared on arXiv, arxiv:1707.05200 by Chris Sherlock and Alex Thiery, and arxiv:1707.05296 by Paul Vanetti, Alexandre Bouchard-Côté, George Deligiannidis, and Arnaud Doucet. As a coordinated move by both groups of authors who had met the weeks before at the Isaac Newton Institute in Cambridge. The paper by Sherlock and Thiery, entitled a discrete bouncy particle sampler, considers a delayed rejection approach that only requires point-wise evaluations of the target density. The delay being into making a speed flip move after a proposal involving a flip in the speed and a drift in the [...]
Wed, Jul 26, 2017
Source: Xian Blog

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