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By Tommaso Dorigo | September 29th 2009 12:31 AM | 12 comments | Print | E-mail | Track Comments
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About Tommaso Dorigo

I am an experimental particle physicist working with the CMS experiment at CERN and the CDF experiment at Fermilab. In my spare time I play chess, abuse the piano, and aim my dobson telescope at... Full Bio

Well, it is now official, so I thought I would let my blog know about it too: I am honored to announce that I was chosen to serve in the CMS Statistics Committee. Along with eight highly distinguished colleagues, I will work for at least the next two years in a group that will take care of ensuring the accuracy of all results that our 2500-strong collaboration will produce.

CMS is one of the two high-energy physics experiments designed to study the proton-proton collisions delivered by the LHC, the Large Hadron Collider at CERN in Geneva, Switzerland. The machine is expected to start data-taking in November this year.

The great, possibly ground-breaking physics expected by CMS will require exceptional scrutiny and rigor in the way the data is analyzed and results are presented.

According to the web page of the group, here is our mandate:

The CMS Statistics Committee forms recommendations on
statistical issues identified in CMS physics analyses. Such issues
include, but are not limited to, the fitting of theoretical models to
data distributions, the estimation of the significance of and limits on
various signals, the handling of systematic errors and the combination
of results from different analyses.

The committee also communicates with other experiments in order to
recommend common methods -- across experiments -- to be used in the
extraction of conclusions from the data and also in the combination of
CMS results with other external measurements.[...]

The members of the committee are expected to act as consultants to CMS
collaborators seeking input on specialized statistics issues. Upon the
request of a physics group or the physics coordinator, the CMS
Statistics Committee also makes formal recommendations [...] regarding the explicit handling of statistics issues on
any physics analysis in CMS.

The committee consists of people with broad and extensive knowledge of
statistics issues [...]. The committee makes its recommendations to the physics group
conveners or the physics coordinator, depending on the analysis in
question.



Well, this really makes me proud, and quite a bit worried. I will have to work hard to live up to the expectations of this charge!

Comments

Hfarmer's picture
Congratualtions.  This will certainly make the next two years of your working life interesting and productive.  

Congratulations! What an exciting and difficult job! The best of luck ...

Hi Tommaso,
congratulations from me too!
From reading your blog I always did suspect that you knew a lot about statistics. It seems that some other people did too. Although, possibly they formed their judgement based upon your other (non-blogged) publications.

congratulations Tommaso
I enjoyed hearing your news,it's great to see a good guy get a sweet position.
I hope this means less time flying steerage and more time more time tucking you son in at night.
and may this position challenge your complete skillset and than some,and may the next 2 year with
your 8 colleagues turn into 8 friends for life,
it goes without saying we all wish you and your colleagues all the best.

dorigo's picture
Thank you to all. Yes, it is a stimulating, difficult endeavour, and certainly the outstanding scientists I will work with are an added bonus. I do know a few of them personally already.
Cheers,
T.

Congrratulations! Over the years, I think the statistics has steadily become more conservative. If anything, now the error margins tend to be too large.

dorigo's picture
Carl, that's because we figured out that non-Gaussian tails are everywhere!

Cheers,
T.

Hi Tommaso,

Congratulations on this assignment.

I notice that MAX and SUP notations are used in in sections 1.2 and 1.3 of the CMS TWiki search page.

Maybe someone on the committe might scan the Tropical Algebras, especially MAX PLUS, which are very powerful, to determine if this might be useful in physics.

The French homepage on "Discrete Event (Dynamic) Systems" is at
http://www-roc.inria.fr/MAXplusOrg/

Bernd Heidergott, Geert Jan Olsder & Jacob van der Woude, Max Plus at Work: Modeling and Analysis of Synchronized Systems: A Course on Max-Plus Algebra and Its Applications, PUP, 2005 is a great introduction.

This is the correct URL for the MaxPlus homepage
http:/maxplus.org/

dorigo's picture
Hey Doug, thank you! I will no doubt give a look at your links.
Cheers,
T.

Hi Tommaso,

Perhaps this happy occasion could prompt you to write something on the history of statistics in elementary particle physics? Starting in the olden days when calculating anything more than the average was considered advanced maths.
Or perhaps simply giving examples of how new methods can tease out valid results where the old ones would show pure noise?
I don't know whether this is possible without getting too technical. But I'm sure with all your years of practice as a respected blogger you're one of the few people who are up to it. That is, of course, only if your new responsibilities will allow you enough time.

Cheers,
Martin

dorigo's picture
Hi Martin,

being elected as a member of the Statistics Committee of CMS does not mean becoming an authority overnight. I actually know little about the subject of the history of statistics, and although I plan to learn more, I am unable to fulfil your request right now. However, I hope that today's article on Bayesianism will be a fruitful reading. But probably what I wrote there is not new to you. I must stay at a basic level in my posts...

Cheers,
T.

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