2016
DOI: 10.1007/978-3-319-41259-7_8
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Semiparametric Theory and Empirical Processes in Causal Inference

Abstract: In this paper we review important aspects of semiparametric theory and empirical processes that arise in causal inference problems. We begin with a brief introduction to the general problem of causal inference, and go on to discuss estimation and inference for causal effects under semiparametric models, which allow parts of the data-generating process to be unrestricted if they are not of particular interest (i.e., nuisance functions). These models are very useful in causal problems because the outcome process… Show more

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Cited by 92 publications
(73 citation statements)
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“…To show consistency under these conditions, we follow the approach of Tsiatis (2006) andKennedy (2016) by employing influence functions about the parameters. Define the estimating equation for λ as…”
Section: B3 Proof Of Propositionmentioning
confidence: 99%
“…To show consistency under these conditions, we follow the approach of Tsiatis (2006) andKennedy (2016) by employing influence functions about the parameters. Define the estimating equation for λ as…”
Section: B3 Proof Of Propositionmentioning
confidence: 99%
“…A crucial aspect of developing semiparametric theory and corresponding estimators for a given problem involves characterizing the possible influence functions, and in particular finding the efficient influence function. Many details on semiparametric theory are available elsewhere (Bickel et al ., ; van der Laan and Robins, ; Tsiatis, ; Kennedy, ), so we give only a brief review here. Any regular asymptotically linear estimator minus its target parameter can be expressed as the empirical average of its so‐called influence function plus an odouble-struckPfalse(1false/nfalse) error term.…”
Section: Resultsmentioning
confidence: 99%
“…In this section we briefly review extensions and other uses of IFs. For deeper treatments of IFs and related topics, interested readers can see (Serfling, 1980;Pfanzagl, 1982;Bickel et al, 1993;van der Vaart, 2000;van der Laan and Robins, 2003;Tsiatis, 2006;Huber, 2011;Kennedy, 2016;Maronna et al, 2019).…”
Section: Discussionmentioning
confidence: 99%