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Lu Tan

3 accepted papers

2024

Spurious Feature Diversification Improves Out-of-distribution Generalization

ICLR 2024poster

Generalization to out-of-distribution (OOD) data is a critical challenge in machine learning. Ensemble-based methods, like weight space ensembles that interpolate model parameters, have been shown to achieve superior OOD performance. However, the underlying mechanism for their effectiveness remains…

Cited by 31SourcePDFScholar
2022

ZIN: When and How to Learn Invariance Without Environment Partition?

NeurIPS 2022accept

It is commonplace to encounter heterogeneous data, of which some aspects of the data distribution may vary but the underlying causal mechanisms remain constant. When data are divided into distinct environments according to the heterogeneity, recent invariant learning methods have proposed to learn…