Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Geometry of Statistical Models for Two-Way Contingency Tables with
  Fixed Odds Ratios   We study the geometric structure of the statistical models for two-by-two
contingency tables. One or two odds ratios are fixed and the corresponding
models are shown to be a portion of a ruled quadratic surface or a segment.
Some pointers to the general case of two-way contingency tables are also given
and an application to case-control studies is presented.

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The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an