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Alvin Heng

4 accepted papers

2024

Out-of-Distribution Detection with a Single Unconditional Diffusion Model

NeurIPS 2024poster

Out-of-distribution (OOD) detection is a critical task in machine learning that seeks to identify abnormal samples. Traditionally, unsupervised methods utilize a deep generative model for OOD detection. However, such approaches require a new model to be trained for each inlier dataset. This paper ex…

2023

Neural Continuous-Discrete State Space Models for Irregularly-Sampled Time Series

ICML 2023oral

Learning accurate predictive models of real-world dynamic phenomena (e.g., climate, biological) remains a challenging task. One key issue is that the data generated by both natural and artificial processes often comprise time series that are irregularly sampled and/or contain missing observations. I…

2023

Selective Amnesia: A Continual Learning Approach to Forgetting in Deep Generative Models

NeurIPS 2023spotlight

The recent proliferation of large-scale text-to-image models has led to growing concerns that such models may be misused to generate harmful, misleading, and inappropriate content. Motivated by this issue, we derive a technique inspired by continual learning to selectively forget concepts in pretrai…