Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Causality-based Graphical Test to obtain an Optimal Blocking Set for
  Randomized Experiments   Randomized experiments are often performed to study the causal effects of
interest. Blocking is a technique to precisely estimate the causal effects when
the experimental material is not homogeneous. We formalize the problem of
obtaining a statistically optimal set of covariates to be used to create blocks
while performing a randomized experiment. We provide a graphical test to obtain
such a set for a general semi-Markovian causal model. We also propose and
provide ideas towards solving a more general problem of obtaining an optimal
blocking set that considers both the statistical and economic costs of
blocking.

5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
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The categories of this paper are: nlin