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[Fizinfo] Philosophy of Science Colloquium , T. Rudas


Chronological Thread 
  • From: "Laszlo E. Szabo" <leszabo AT hps.elte.hu>
  • To: mafla <mafla AT hps.elte.hu>, fizinfo <fizinfo AT sunserv.kfki.hu>, Multiple recipients of list <koglist AT cogpsyphy.hu>
  • Subject: [Fizinfo] Philosophy of Science Colloquium , T. Rudas
  • Date: Tue Oct 15 02:40:00 2002
  • List-archive: <http://sunserv.kfki.hu/pipermail/fizinfo/>
  • List-id: ELFT HRAD <fizinfo.lists.kfki.hu>

Department of HISTORY AND PHILOSOPHY OF SCIENCE
Eotvos University, Budapest
------------------------------------------------------------------------
Pazmany P. setany 1/A
Budapest, Hungary
Phone/Fax: (36-1) 372 2924
The web site of the seminar:
http://hps.elte.hu/seminar


Philosophy of Science Colloquium
Room 6.54 (6th floor) Monday 4:00 PM
_________________________________________
21 October 4:00 PM 6th floor 6.54
(Language of presentation: English, except all participants speak Hungarian)

Tamás Rudas
<mailto:rudas AT tarki.hu>
Department of Statistics, Institute of Sociology, Eotvos University, Budapest

Measurement and modelling of association in contingency tables
Association between two variables is defined in the talk as the information in their joint distribution not present in the univariate distributions. Therefore, a measure of association, together with the marginal distributions, has to parameterize the joint distribution and has to be variationally independent from the marginals. These requirements point to the odds ratio as the only appropriate measure of association.

For higher dimensional contingency tables, a possible generalization is the system of conditional odds ratios. The conditional odds ratios, on an ascending class of subsets, are variationally independent from the marginal distributions on the complement descending class and together parameterize the joint distribution. Depending on the class of subsets used, one obtains a flexible class of parametereizations that can be used to model the conditional association structure. The models obtained by assuming lack of conditional association on an ascending class of subsets are of the log-linear type.

______________________________________________________________________
The 60-minute lecture is followed by a 10-minute break. Then we held a 30-60-minute discussion.


The organizer of the seminar: László E. Szabó <http://hps.elte.hu/%7Eleszabo> (email: leszabo AT hps.elte.hu <mailto:leszabo AT hps.elte.hu>)



--
L a s z l o E. S z a b o
Theoretical Physics Research Group of the Hungarian Academy of Sciences
Department of History and Philosophy of Science
Eotvos University, Budapest
H-1518 Budapest, Pf. 32, Hungary
Phone/Fax: (36-1)372-2924
Mobil/SMS: (36) 20-366-1172
http://hps.elte.hu/~leszabo





  • [Fizinfo] Philosophy of Science Colloquium , T. Rudas, Laszlo E. Szabo, 10/15/2002

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