James Cussens, Julia Hatamyar, Vishalie Shah, Noemi Kreif
arXiv 18 Jun 2025 · Econometrics
arXiv:2506.15435 · PDF · DOI · OpenAlex · Extracted main text
We develop and implement a version of the popular "policytree" method (Athey and Wager, 2021) using discrete optimisation techniques. We test the performance of our algorithm in finite samples and find an improvement in the runtime of optimal policy tree learning by a factor of nearly 50 compared to the original version. We provide an R package, "fastpolicytree", for public use.
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The works this paper leans on most, across its whole bibliography — not restricted to papers in our corpus. Ranked by composite intensity, which combines how often a work is mentioned, how many sections mention it, and how much of that falls in the main text rather than the appendix.
| Reference | Intensity | Mentions | Sections | Main text | |
|---|---|---|---|---|---|
| 1 | Zhou, Z., Athey, S., and Wager, S (2023) Offline Multi-Action Policy Learning: Generalization and Optimization | 0.811 | 4 | 2 | 100% |
| 2 | Athey, S. and Wager, S (2021) Policy learning with observational data | 0.737 | 3 | 2 | 100% |
| 3 | Sverdrup, E., Kanodia, A., Zhou, Z., Athey, S., and Wager, S (2020) policytree: Policy learning via doubly robust empirical welfare maximization over trees | 0.644 | 2 | 2 | 100% |
| 4 | Amram, M., Dunn, J., and Zhuo, Y. D (2022) Optimal policy trees | 0.585 | 3 | 1 | 100% |
| 5 | Athey, S., Tibshirani, J., and Wager, S (2019) Generalized random forests | 0.405 | 1 | 1 | 100% |
| 6 | Bertsimas, D. and Dunn, J (2017) Optimal classification trees | 0.405 | 1 | 1 | 100% |
| 7 | Kitagawa, T. and Tetenov, A (2018) Who should be treated? Empirical welfare maximization methods for treatment choice | 0.405 | 1 | 1 | 100% |
| 8 | Luedtke, A. R. and van der Laan, M. J (2016) Super-learning of an optimal dynamic treatment rule | 0.405 | 1 | 1 | 100% |
| 9 | Luedtke, A. R. and van der Laan, M. J (2016) Optimal individualized treatments in resource-limited settings | 0.405 | 1 | 1 | 100% |
| 10 | Manski, C. F (2004) Statistical treatment rules for heterogeneous populations | 0.405 | 1 | 1 | 100% |
Showing the top 10 of 16 scored citations.