Combining Matching and Synthetic Control to Trade off Biases from Extrapolation and Interpolation.
Combining Matching and Synthetic Control to Trade off Biases from Extrapolation and Interpolation.
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DOI:
10.1080/01621459.2021.1979562
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发表时间:
2021
影响因子:
3.7
通讯作者:
Torgovitsky, Alexander
中科院分区:
文献类型:
--
作者:
Kellogg, Maxwell;Mogstad, Magne;Pouliot, Guillaume A.;Torgovitsky, Alexander
关键词:
The synthetic control (SC) method is widely used in comparative case studies to adjust for differences in pre-treatment characteristics. SC limits extrapolation bias at the potential expense of interpolation bias, whereas traditional matching estimators have the opposite properties. This complementarity motives us to propose a matching and synthetic control (or MASC) estimator as a model averaging estimator that combines the standard SC and matching estimators. We show how to use a rolling-origin cross-validation procedure to train the MASC to resolve trade-offs between interpolation and extrapolation bias. We use a series of empirically-based placebo and Monte Carlo simulations to shed light on when the SC, matching, MASC and penalized SC estimators do (and do not) perform well. Then, we apply these estimators to examine the economic costs of conflicts in the context of Spain.
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影响因子:
4.2
作者:
Abadie, Alberto;Diamond, Alexis;Hainmueller, Jens
通讯作者:
Hainmueller, Jens
影响因子:
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Hansen, Bruce E.;Racine, Jeffrey S.
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影响因子:
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GIJBELS, I
DOI:
10.1080/01621459.2021.1965613
发表时间:
2021-09-17
影响因子:
3.7
作者:
Ferman, Bruno
通讯作者:
Ferman, Bruno
影响因子:
6.1
作者:
Abadie, A;Imbens, GW
通讯作者:
Imbens, GW