Archive for Springer-Verlag

class action, really?!

Posted in Books, Travel, University life with tags , , , , , , , , , , , , , , , on January 13, 2026 by xi'an

The letter from the US I found in my (home) mailbox last week sounded like a spam building on copyright violations, if an elaborate one, with promises of huge settlement benefits ($3000 per work, for a total of $1.5 billion!) and a California judge authorization stamped on the envelope… However, after being contacted by a co-author and checking on Internet about the existence of a class action against Anthropic and its pirated libraries, I realised this was not (a spam) and checked that the database of the works concerned by this settlement included eight of my books. (Incl. second editions.) Although I do not expect much return (if any!) once the costs and fees and publishers’ share are subtracted, and the remainder split between 7M books!, this is a first instance of getting back at the providers of pirated copies that are everywhere (since publishers came up with the brilliant scheme of provided access to pdf versions!)

“The lawsuit alleges that Anthropic infringed copyrights by downloading datasets containing copyrighted books in violation of the federal Copyright Act. Anthropic denies all the allegations and denies that it did anything wrong. Anthropic argues that its use of the downloaded datasets was fair use. You can get more information about the lawsuit and view related court documents (…) . Copying a work without permission is not copyright infringement if a defendant can show the copying was fair use. If the use is determined to be infringement, the Copyright Act provides for statutory damages of between $200 and $150,000 per work, depending on factors including the harm that was actually caused by the infringement, and whether the alleged infringer reasonably believed its use was fair or instead acted wilfully. If the use was fair (or there was no copying), the defendant owes $0 (…) The resulting Settlement is the largest copyright class action settlement in history. It provides approximately $3,000 per work (not per Class Member), plus interest earned on the Settlement fund, less the Court-approved costs and fees taken out“

IISA 2024 [snapshots]

Posted in Books, pictures, Travel, University life with tags , , , , , , , , , , , , on January 27, 2025 by xi'an

Two pictures from IISA 2024, with the local organising committee (kudos to them!) and Shreya, Rito and I (with a past-its-prime Use R! Springer tee shirt) attending an MCMC lecture on the Sunday afternoon.

estimation of a normal mean matrix

Posted in Statistics with tags , , , , , , , , , on May 13, 2021 by xi'an

A few days ago, I noticed the paper Estimation under matrix quadratic loss and matrix superharmonicity by Takeru Matsuda and my friend Bill Strawderman had appeared in Biometrika. (Disclaimer: I was not involved in handling the submission!) This is a “classical” shrinkage estimation problem in that covariance matrix estimators are compared under under a quadratic loss, using Charles Stein’s technique of unbiased estimation of the risk is derived. The authors show that the Efron–Morris estimator is minimax. They also introduce superharmonicity for matrix-variate functions towards showing that generalized Bayes estimator with respect to a matrix superharmonic priors are minimax., including a generalization of Stein’s prior. Superharmonicity that relates to (much) earlier results by Ed George (1986), Mary-Ellen Bock (1988),  Dominique Fourdrinier, Bill Strawderman, and Marty Wells (1998). (All of whom I worked with in the 1980’s and 1990’s! in Rouen, Purdue, and Cornell). This paper also made me realise Dominique, Bill, and Marty had published a Springer book on Shrinkage estimators a few years ago and that I had missed it..!

wrong algebra for slice sampler

Posted in Books, Kids, R, Statistics with tags , , , , , , , , , , , , on January 27, 2021 by xi'an

Once more, and thrice alas!, I became aware of a typo in our “Use R!” book through a question on X validated from a reader unable to reproduce the slice of a basic 2D slice sampler for a logistic regression with coefficients (a,b). Indeed, our slice reads as the incorrect set (missing the i=1,…,n)

\left\{ (a,b): y_i(a+bx_i) > \log \frac{u_i}{1-u_i} \right\}

when it should have been

\bigcap_{i=1} \left\{ (a,b)\,:\ (-1)^{y_i}(a+bx_i) > \log\frac{u_i}{1-u_i} \right\}

which is the version I found in my LaTeX file. So I do not know what happened (unless I corrected the LaTeX file at a later date and cannot remember it, but the latest chance on the file reads October 2011…). Fortunately, the resulting slices in a and b and the following R code remain correct. Unfortunately, both French and Japanese translations reproduce the mistake…

Nature Computational Science

Posted in Books, Statistics, University life with tags , , , , , , on September 16, 2020 by xi'an

The Nature group is launching a series of new on-line-only journals, including Nature Computational Science which could be of interest to some readers of the ‘Og. It is rather unfortunate that statistics is not explicitly mentioned in the list below. And that the only acknowledged editors are the chief editor, Fernando Chirigati, and the consulting edutor, Yann Sweeney. Nature does not have an editorial board in the standard way

Nature Computational Science is a multidisciplinary journal that focuses on the development and use of computational techniques and mathematical models, as well as their application to address complex problems across a range of scientific disciplines. The journal publishes both fundamental and applied research, from groundbreaking algorithms, tools and frameworks that notably help to advance scientific research, to methodologies that use computing capabilities in novel ways to find new insights and solve challenging real-world problems. By doing so, the journal creates a unique environment to bring together different disciplines to discuss the latest advances in computational science.
Disciplines covered by Nature Computational Science include, but are not limited to:
  • Bioinformatics
  • Cheminformatics
  • Geoinformatics
  • Climate Modeling and Simulation
  • Computational Physics and Cosmology
  • Applied Math
  • Materials Science
  • Urban Science and Technology
  • Scientific Computing
  • Methods, Tools and Platforms for Computational Science
  • Visualization and Virtual Reality for Computational Science

Another new Nature on-line journal of potential interest is Nature Reviews Methods Primers, albeit it focusses on life science and physics:

Nature Reviews Methods Primers is an online-only journal publishing high-quality Primer articles covering analytical, applied, statistical, theoretical and computational methods used in the life and physical sciences.