Ax Linwei Tao, Haoyang Luo, Minjing Dong, Chang Xu 3/25/2026

Confidence Calibration under Ambiguous Ground Truth

Addresses confidence calibration when annotators disagree, showing structural failures of standard calibration methods on majority-voted labels.

Ax Benjamin Gutteridge, Michael Bronstein, Xiaowen Dong 3/25/2026

Can Graph Foundation Models Generalize Over Architecture?

Studies whether graph foundation models can generalize across different GNN architectures and graph characteristics, revealing limitations in current approaches.

Ax Davide Scassola, Dylan Ponsford, Adri\'an Javaloy, Sebastiano Saccani, Luca Bortolussi, Henry Gouk, Antonio Vergari 3/25/2026

A Sobering Look at Tabular Data Generation via Probabilistic Circuits

Critical analysis of tabular data generation via probabilistic circuits, questioning progress claims and evaluation protocols in current benchmarks.