Balancing and Elimination of Nuisance Variables
نویسندگان
چکیده
منابع مشابه
Balancing and elimination of nuisance variables.
Addressing covariate imbalance in causal analysis will be reformulated as an elimination of the nuisance variables problem. We show, within a counterfactual balanced setting, how averaging, conditioning, and marginalization techniques can be used to reduce bias due to a possibly large number of imbalanced baseline confounders. The notions of X-sufficient and X-ancillary quantities are discussed...
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where , the existential quantifier, denotes “there exists’’ and is the conjunction that denotes “and.’’ Notice that while both sides of the equivalence, , are in fact equivalent, the right hand side does not involve y, i.e., the variable y has been eliminated. In fact, the quantifier has been also eliminated; for this reason, the procedure is also called “quantifier elimination.’’ A serious def...
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ژورنال
عنوان ژورنال: The International Journal of Biostatistics
سال: 2010
ISSN: 1557-4679
DOI: 10.2202/1557-4679.1209