Just received the good news that our paper Faster Hamiltonian Monte Carlo by Learning Leapfrog Scale by Wu Changye (吴昌烨), Pierre Pudlo, Julien Stoehr and myself, got accepted in Statistics & Computing! This is great in its own, but further concludes a story that started with Changye’s PhD thesis at Paris Dauphine in 2018, with a revision request from Statistics & Computing that stalled with Changye’s departing for industry in Shanghai and eventually resumed thanks to Julien’s massive investment in coding and improving the learning mechanism. It may also conclude my story with Statistics & Computing, where I am supposed to be the historically most prolific author (?), given the move by Springer to a cash-flow model on 01 January, 2027…
Archive for Scholarly Open Access
faster HMC by learning
Posted in Books, Kids, Statistics, University life with tags algorithm, conformal Hamiltonian dynamics, eHMC, Hamiltonian Monte Carlo, HMC, leapfrog integrator, mirror descent, No-U-Turn sampler, NUTS, PhD thesis, population Monte Carlo, publication fees, revision, Scholarly Open Access, Shanghai, Springer Nature, Statistics & Computing, tempering, Università Ca' Foscari Venezia on September 23, 2026 by xi'anarbitrary non-constant function [nonsensical]
Posted in Statistics with tags Beall's list, characterisation, complete statistics, cross validated, exponential families, minimal sufficient statistic, negative exponential distribution, Open Journal of Statistics, predatory journal, publish and perish, publish or perish, Scholarly Open Access on November 6, 2020 by xi'an
When looking for properties of the negative exponential distribution, in connection with an X validated question, I came across this nonsensical paper, starting with a truncated and drifted exponential distribution being defined as a negative exponential distribution, including a nonsensical bound a in (1.1), followed by an equally nonsensical characterisation of the distribution, including a theorem with a useless function Φ… Unsurprisingly, the publisher (SCIRP) of the Open Journal of Statistics is part of Beall’s list of potential, possible, or probable] predatory publishers. (List that is now maintained by Scholarly Open Access.)
