| タイトル | A Note on the Estimation Method of Intervention Effects based on Statistical Decision Theory |
|---|---|
| 著者 | 堀井俊佑 、須子統太 |
| 年度 | 2018 |
| 形式 | 国際学会 |
| 分野 | 知識情報処理 |
| 掲載雑誌名 | Proceedings of 2019 53rd Annual Conference on Information Sciences and Systems (CISS 2019) |
| 掲載号・ページ | |
| 掲載年 | 2018 |
| 掲載月 | 3 |
| アブスト （日本語） |
2019 53rd Annual Conference on Information Sciences and Systems (CISS 2019) 2019年3月20日～3月22日（発表日：21日） Baltimore, MD, USA 査読有 DOI: 10.1109/CISS.2019.8692816 https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8692816 |
| アブスト （英語） |
In this paper, we deal with the problem of estimating the intervention effect in the statistical causal analysis using the structural equation model and the causal diagram. The intervention effect is defined as a causal effect on the response variable Y when the causal variable X is fixed to a certain value by an external operation and is defined based on the causal diagram. The intervention effect is defined as a function of the probability distributions in the causal diagram, however, generally these probability distributions are unknown, so it is required to estimate them from data. In other words, the steps of the estimation of the intervention effect using the causal diagram are as follows: 1. Estimate the causal diagram from the data, 2. Estimate the probability distributions in the causal diagram from the data, 3. Calculate the intervention effect. However, if the problem of estimating the intervention effect is formulated in the statistical decision theory framework, estimation with this procedure is not necessarily optimal. In this study, we formulate the problem of estimating the intervention effect for the two cases, the case where the causal diagram is known and the case where it is unknown, in the framework of statistical decision theory and derive the optimal decision method under the Bayesian criterion. We show the effectiveness of the proposed method through numerical simulations. |
| 備考 （日本語） |
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| 備考 （英語） |
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