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Title: Causal Matching using Random Hyperplane Tessellations
Matching is one of the simplest approaches for estimating causal effects from observational data. Matching techniques compare the observed outcomes across pairs of individuals with similar covariate values but different treatment statuses in order to estimate causal effects. However, traditional matching techniques are unreliable given high-dimensional covariates due to the infamous curse of dimensionality. To overcome this challenge, we propose a simple, fast, yet highly effective approach to matching using Random Hyperplane Tessellations (RHPT). First, we prove that the RHPT representation is an approximate balancing score – thus maintaining the strong ignorability assumption – and provide empirical evidence for this claim. Second, we report results of extensive experiments showing that matching using RHPT outperforms traditional matching techniques and is competitive with state-of-the-art deep learning methods for causal effect estimation. In addition, RHPT avoids the need for computationally expensive training of deep neural networks.  more » « less
Award ID(s):
2226025 2041759
PAR ID:
10549074
Author(s) / Creator(s):
; ;
Publisher / Repository:
Proceedings of Machine Learning Research
Date Published:
Journal Name:
Proceedings of Machine Learning Research: Proceedings of the Third Conference on Causal Learning and Reasoning
Volume:
236
ISSN:
2640-3498
Page Range / eLocation ID:
688-702
Subject(s) / Keyword(s):
Causal inference hyperdimensional computing machine learning
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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