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Changjian Shui

12 accepted papers

2025

Reliably detecting model failures in deployment without labels

NeurIPS 2025poster

The distribution of data changes over time; models operating in dynamic environments need retraining. But knowing when to retrain, without access to labels, is an open challenge since some, but not all shifts degrade model performance. This paper formalizes and addresses the problem of post-deploym…

Cited by 0SourcecodeScholar
2024

Generalizing across Temporal Domains with Koopman Operators

AAAI 2024technical

In the field of domain generalization, the task of constructing a predictive model capable of generalizing to a target domain without access to target data remains challenging. This problem becomes further complicated when considering evolving dynamics between domains. While various approaches have…

Cited by 6SourcePDFScholar
2024

Latent Trajectory Learning for Limited Timestamps under Distribution Shift over Time

ICLR 2024oral

Distribution shifts over time are common in real-world machine-learning applications. This scenario is formulated as Evolving Domain Generalization (EDG), where models aim to generalize well to unseen target domains in a time-varying system by learning and leveraging the underlying evolving pattern…

Cited by 6SourcePDFScholar
2024

Learning Equilibrium Transformation for Gamut Expansion and Color Restoration

ECCV 2024poster

"Existing imaging systems support wide-gamut images like ProPhoto RGB, but most images are typically encoded in a narrower gamut space (e.g., sRGB). To this end, these images can be enhanced by learning to recover the original color values beyond the sRGB gamut, or out-of-gamut values. Current metho…

2024

Towards Progressive Multi-Frequency Representation for Image Warping

CVPR 2024poster

Image warping a classic task in computer vision aims to use geometric transformations to change the appearance of images. Recent methods learn the resampling kernels for warping through neural networks to estimate missing values in irregular grids which however fail to capture local variations in de…

2023

On the Stability-Plasticity Dilemma in Continual Meta-Learning: Theory and Algorithm

NeurIPS 2023poster

We focus on Continual Meta-Learning (CML), which targets accumulating and exploiting meta-knowledge on a sequence of non-i.i.d. tasks. The primary challenge is to strike a balance between stability and plasticity, where a model should be stable to avoid catastrophic forgetting in previous tasks and…

2022

Fair Representation Learning through Implicit Path Alignment

ICML 2022spotlight

We consider a fair representation learning perspective, where optimal predictors, on top of the data representation, are ensured to be invariant with respect to different sub-groups. Specifically, we formulate this intuition as a bi-level optimization, where the representation is learned in the oute…

Cited by 30SourcePDFScholar
2022

On Learning Fairness and Accuracy on Multiple Subgroups

NeurIPS 2022accept

We propose an analysis in fair learning that preserves the utility of the data while reducing prediction disparities under the criteria of group sufficiency. We focus on the scenario where the data contains multiple or even many subgroups, each with limited number of samples. As a result, we present…

2021

Aggregating From Multiple Target-Shifted Sources

ICML 2021spotlight

Multi-source domain adaptation aims at leveraging the knowledge from multiple tasks for predicting a related target domain. Hence, a crucial aspect is to properly combine different sources based on their relations. In this paper, we analyzed the problem for aggregating source domains with different…

Cited by 43SourcePDFScholar
2021

Generalization Bounds For Meta-Learning: An Information-Theoretic Analysis

NeurIPS 2021spotlight

We derive a novel information-theoretic analysis of the generalization property of meta-learning algorithms. Concretely, our analysis proposes a generic understanding in both the conventional learning-to-learn framework \citep{amit2018meta} and the modern model-agnostic meta-learning (MAML) algorith…

2020

Deep Active Learning: Unified and Principled Method for Query and Training

AISTATS 2020poster

In this paper, we are proposing a unified and principled method for both the querying and training processes in deep batch active learning. We are providing theoretical insights from the intuition of modeling the interactive procedure in active learning as distribution matching, by adopting the Wass…