Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Blocking, rerandomization, and regression adjustment in randomized
  experiments with high-dimensional covariates   Blocking, a special case of rerandomization, is routinely implemented in the
design stage of randomized experiments to balance baseline covariates.
Regression adjustment is highly encouraged in the analysis stage to adjust for
the remaining covariate imbalances. Researchers have recommended combining
these techniques; however, the research on this combination in a
randomization-based inference framework with a large number of covariates is
limited. This paper proposes several methods that combine the blocking,
rerandomization, and regression adjustment techniques in randomized experiments
with high-dimensional covariates. In the design stage, we suggest the
implementation of blocking or rerandomization or both techniques to balance a
fixed number of covariates most relevant to the outcomes. For the analysis
stage, we propose regression adjustment methods based on the Lasso to adjust
for the remaining imbalances in the additional high-dimensional covariates.
Moreover, we establish the asymptotic properties of the proposed Lasso-adjusted
average treatment effect estimators and outline conditions under which these
estimators are more efficient than the unadjusted estimators. In addition, we
provide conservative variance estimators to facilitate valid inferences. Our
analysis is randomization-based, allowing the outcome data generating models to
be mis-specified. Simulation studies and two real data analyses demonstrate the
advantages of the proposed methods.

18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn