Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal design of observational studies: overview and synthesis   We review typical design problems encountered in the planning of
observational studies and propose a unifying framework that allows us to use
the same concepts and notation for different problems. In the framework, the
design is defined as a probability measure in the space of observational
processes that determine whether the value of a variable is observed for a
specific unit at the given time. The optimal design is then defined, according
to Bayesian decision theory, to be the one that maximizes the expected utility
related to the design. We present examples on the use of the framework and
discuss methods for deriving optimal or approximately optimal designs.

19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th