A Density Ratio Super Learner
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866929453946372096 |
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| author | Wu, Wencheng Benkeser, David |
| author_facet | Wu, Wencheng Benkeser, David |
| contents | The estimation of the ratio of two density probability functions is of great interest in many statistics fields, including causal inference. In this study, we develop an ensemble estimator of density ratios with a novel loss function based on super learning. We show that this novel loss function is qualified for building super learners. Two simulations corresponding to mediation analysis and longitudinal modified treatment policy in causal inference, where density ratios are nuisance parameters, are conducted to show our density ratio super learner's performance empirically. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_04796 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Density Ratio Super Learner Wu, Wencheng Benkeser, David Machine Learning The estimation of the ratio of two density probability functions is of great interest in many statistics fields, including causal inference. In this study, we develop an ensemble estimator of density ratios with a novel loss function based on super learning. We show that this novel loss function is qualified for building super learners. Two simulations corresponding to mediation analysis and longitudinal modified treatment policy in causal inference, where density ratios are nuisance parameters, are conducted to show our density ratio super learner's performance empirically. |
| title | A Density Ratio Super Learner |
| topic | Machine Learning |
| url | https://arxiv.org/abs/2408.04796 |