## plagiarism exposed!

**L**ast morn, I had the surprise of receiving the following email:

This is to inform you that the following abstract has been submitted to the 3rd International Conference of the ERCIM WG on COMPUTING & STATISTICS (ERCIM’10)

Ab#: 114

Title: Goodness of Fit Via Mixtures of Beta distributions

Keywords: nonparametric estimation, posterior conditional predictive p-value.

Abstract: We consider a Bayesian approach to goodness of fit, that is, to the problem of testing whether or not a given parametric model is compatible with the data at hand . Since we are concerned with a goodness of fit problem, it is more of interest to consider a functional distance to the tested model d(F;F) as the basis of our test, rather than the corresponding Bayes factor, since the later puts more emphasis on the parameters. It is both of high interest and of strong difficulty to come up with a satisfactory notion of a Bayesian test for goodness ofit to a distribution or to a family of distributions.

The abstract is a plagiarism of your work.

I am informing you of about this in case the author has tried to plagiarize the whole paper. The same author has submitted a second abstract plagiarizing another paper. The author uses bogus affiliations and I cannot trace his institution in case he has one.

**I**t is somehow comforting to see that such a gross example of plagiarism can get detected, despite the fact that our paper never got published. Although I am sure there must be conferences that do not apply any filter on the submission…

**T**his paper with Judith Rousseau was once submitted to Series B, but I could not come to complete the requested revision for programming motives, the task of modifying the several thousand lines of C code driving the beta mixture estimation filling me with paralysing dread! This is actually the time when I stopped programming in C (the fact that I ever really programmed in C is actually debatable!). This is unfortunate as the spirit of the paper was quite nice, using an idea borrowed from Verdinelli and Wasserman to build a genuine Bayesian goodness of fit test… I do not think there is much to salvage at this later stage, given the explosion of Bayesian non-parametrics.

June 24, 2010 at 12:07 am

[…] The #9 with WIlfrid Kendall and Jean-Michel Marin is clearly very popular as someone attempted to plagiarise it! The #1 comes as a real surprise, given that it is in French and more of a […]

June 22, 2010 at 1:06 pm

As a coincidence, Wilfrid Kendall sent me an email today that our joint paper had also been the victim of a plagiarism attempt in the Proceedings of the London Mathematical Society!

June 15, 2010 at 11:46 pm

Did they tell you who the author was? It’d be interesting to know — maybe someone reading this knows them. I know someone who has used such tricks to secure himself at least two jobs (in both cases, the employers realised after a while that he was a fraud).

June 16, 2010 at 2:36 pm

Yes, the organisers gave me the name of the fraudster, but I do not want to post it for obvious legalese reasons!

June 15, 2010 at 7:51 am

That would be fun! But I am not certain the plagiarist aims at attending the conference at all, this may simply be a way to upgrade his vita or to enter the country…

June 15, 2010 at 4:47 am

I’m curious. What programming language do you use now, if not C?

I assume WinBugs and R are too slow…

I am finishing my Phd (Political Science) and I am starting to work with bayesian inference (hierarchichal modeling) and I have to decide what language to study (I decided to study C). But you said you stopped with C.

Could you explore this subject?

It would be very interesting to learn more about your prograaming practice.

regards,

Manoel

June 15, 2010 at 7:35 am

Thanks Manoel: I did not mean to disparage C. Simply, I came to terms with my poor programming skills (I was writing Pascal programs in C rather than using the full abilities of this language.) So now I do program in R and when it comes to real problems I let my coauthor(s) turn the algorithm in C, Fortran or Python…

June 15, 2010 at 3:21 am

That’s amazing. I think they should “accept” these abstracts and then confront the plagiarist while they are on stage, attempting to give your talk.