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Ruoxuan Xiong

10 accepted papers

2025

Causal Graph Transformer for Treatment Effect Estimation Under Unknown Interference

ICLR 2025poster

Networked interference, also known as the peer effect in social science and spillover effect in economics, has drawn increasing interest across various domains. This phenomenon arises when a unit’s treatment and outcome are influenced by the actions of its peers, posing significant challenges to cau…

2025

Causal Representation Learning from Multimodal Clinical Records under Non-Random Modality Missingness

EMNLP 2025

Clinical notes contain rich patient information, such as diagnoses or medications, making them valuable for patient representation learning. Recent advances in large language models have further improved the ability to extract meaningful representations from clinical texts. However, clinical notes a

Cited by 0SourcePDFScholar
2025

Generalizing Causal Effects from Randomized Controlled Trials to Target Populations across Diverse Environments

ICML 2025poster

Generalizing causal effects from Randomized Controlled Trials (RCTs) to target populations across diverse environments is of significant practical importance, as RCTs are often costly and logistically complex to conduct. A key challenge is environmental shift, defined as changes in the distribution…

Cited by 0SourcePDFScholar
2025

Rethinking Causal Ranking: A Balanced Perspective on Uplift Model Evaluation

ICML 2025poster

Uplift modeling is crucial for identifying individuals likely to respond to a treatment in applications like marketing and customer retention, but evaluating these models is challenging due to the inaccessibility of counterfactual outcomes in real-world settings. In this paper, we identify a fundame…

2024

Contrastive Balancing Representation Learning for Heterogeneous Dose-Response Curves Estimation

AAAI 2024technical

Estimating the individuals' potential response to varying treatment doses is crucial for decision-making in areas such as precision medicine and management science. Most recent studies predict counterfactual outcomes by learning a covariate representation that is independent of the treatment variabl…

2024

Higher-Order Causal Message Passing for Experimentation with Complex Interference

NeurIPS 2024poster

Accurate estimation of treatment effects is essential for decision-making across various scientific fields. This task, however, becomes challenging in areas like social sciences and online marketplaces, where treating one experimental unit can influence outcomes for others through direct or indirect…

Cited by 1SourcePDFScholar
2024

Learning Shadow Variable Representation for Treatment Effect Estimation under Collider Bias

ICML 2024poster

One of the significant challenges in treatment effect estimation is collider bias, a specific form of sample selection bias induced by the common causes of both the treatment and outcome. Identifying treatment effects under collider bias requires well-defined shadow variables in observational data,…

Cited by 4SourcePDFScholar
2024

Two-Stage Shadow Inclusion Estimation: An IV Approach for Causal Inference under Latent Confounding and Collider Bias

ICML 2024poster

Latent confounding bias and collider bias are two key challenges of causal inference in observational studies. Latent confounding bias occurs when failing to control the unmeasured covariates that are common causes of treatments and outcomes, which can be addressed by using the Instrumental Variable…

Cited by 2SourcePDFScholar
2023

Learning Instrumental Variable from Data Fusion for Treatment Effect Estimation

AAAI 2023technical

The advent of the big data era brought new opportunities and challenges to draw treatment effect in data fusion, that is, a mixed dataset collected from multiple sources (each source with an independent treatment assignment mechanism). Due to possibly omitted source labels and unmeasured confounders…