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Ordered Correlation Forest

Riccardo Di Francesco

arXiv 15 Sep 2023 · Econometrics · publishedEconometric Reviews (2025) · 3 citations (OpenAlex)

arXiv:2309.08755 · PDF · DOI · OpenAlex · Extracted main text

Abstract

Empirical studies in various social sciences often involve categorical outcomes with inherent ordering, such as self-evaluations of subjective well-being and self-assessments in health domains. While ordered choice models, such as the ordered logit and ordered probit, are popular tools for analyzing these outcomes, they may impose restrictive parametric and distributional assumptions. This paper introduces a novel estimator, the ordered correlation forest, that can naturally handle non-linearities in the data and does not assume a specific error term distribution. The proposed estimator modifies a standard random forest splitting criterion to build a collection of forests, each estimating the conditional probability of a single class. Under an "honesty" condition, predictions are consistent and asymptotically normal. The weights induced by each forest are used to obtain standard errors for the predicted probabilities and the covariates' marginal effects. Evidence from synthetic data shows that the proposed estimator features a superior prediction performance than alternative forest-based estimators and demonstrates its ability to construct valid confidence intervals for the covariates' marginal effects.

Citation extraction

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Most heavily cited references

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.

ReferenceIntensityMentionsSectionsMain text
1Breiman, Leo (2001) Random forests1.00075100%
2Lechner, Michael, Okasa, Gabriel (2019) Random forest estimation of the ordered choice model1.00075100%
3Wager, Stefan, Athey, Susan (2018) Estimation and inference of heterogeneous treatment effects using random forests1.00073100%
4Athey, Susan, Tibshirani, Julie, Wager, Stefan (2019) Generalized random forests0.92843100%
5Lechner, Michael, Mareckova, Jana (2022) Modified Causal Forest0.81142100%
6Hornung, Roman (2020) Ordinal forests0.73732100%
7Athey, Susan, Imbens, Guido W (2016) Recursive partitioning for heterogeneous causal effects0.64422100%
8Efron, Bradley, Hastie, Trevor (2016) Computer Age Statistical Inference: Algorithms, Evidence, and Data Science0.64422100%
9Hastie, T., Tibshirani, R., Friedman, J.H (2009) The Elements of Statistical Learning: Data Mining, Inference, and Prediction0.64422100%
10Janitza, Silke, Tutz, Gerhard, Boulesteix, Anne-Laure (2016) Random forest for ordinal responses: prediction and variable selection0.51121100%

Showing the top 10 of 21 scored citations.

Cited by, within the corpus

arXiv econ.EM papers that cite this one, ranked by how heavily they lean on it.

Citing paperIntensityMentionsSections
1Causal Inference for Qualitative Outcomes0.00011