Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Order of Magnitude Calculus   This paper develops a simple calculus for order of magnitude reasoning. A
semantics is given with soundness and completeness results. Order of magnitude
probability functions are easily defined and turn out to be equivalent to kappa
functions, which are slight generalizations of Spohn's Natural Conditional
Functions. The calculus also gives rise to an order of magnitude decision
theory, which can be used to justify an amended version of Pearl's decision
theory for kappa functions, although the latter is weaker and less expressive.

11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics