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Matthijs van Leeuwen

4 accepted papers

2026

Learning Subgroups with Maximum Treatment Effects Without Causal Heuristics

AAAI 2026technical

Discovering subgroups with the maximum average treatment effect is crucial for targeted decision making in domains such as precision medicine, public policy, and education. While most prior work is formulated in the potential‑outcome framework, the corresponding structural causal model (SCM) for thi

Cited by 0SourcePDFScholar
2026

Towards Automated Self-Supervised Learning for Truly Unsupervised Graph Anomaly Detection (Abstract Reprint)

AAAI 2026technical

Self-supervised learning (SSL) is an emerging paradigm that exploits supervisory signals generated from the data itself, and many recent studies have leveraged SSL to conduct graph anomaly detection. However, we empirically found that three important factors can substantially impact detection perfor

Cited by 0SourcePDFScholar
2025

Scalable, Explainable and Provably Robust Anomaly Detection with One-Step Flow Matching

NeurIPS 2025poster

We introduce Time-Conditioned Contraction Matching (TCCM), a novel method for semi-supervised anomaly detection in tabular data. TCCM is inspired by flow matching, a recent generative modeling framework that learns velocity fields between probability distributions and has shown strong performance co…

Cited by 0SourcecodeScholar