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Sangwu Lee

4 accepted papers

2025

Accessible, At-Home Detection of Parkinson’s Disease via Multi-Task Video Analysis

AAAI 2025technical

Limited accessibility to neurological care leads to under-diagnosed Parkinson's Disease (PD), preventing early intervention. Existing AI-based PD detection methods primarily focus on unimodal analysis of motor or speech tasks, overlooking the multifaceted nature of the disease. To address this, we i…

2025

Where and How to Perturb: On the Design of Perturbation Guidance in Diffusion and Flow Models

NeurIPS 2025poster

Recent guidance methods in diffusion models steer reverse sampling by perturbing the model to construct an implicit weak model and guide generation away from it. Among these approaches, attention perturbation has demonstrated strong empirical performance in unconditional scenarios where classifier-f…

Cited by 0SourceScholar
2024

VISREAS: Complex Visual Reasoning with Unanswerable Questions

ACL 2024findings

Verifying a question’s validity before answering is crucial in real-world applications, where users may provide imperfect instructions. In this scenario, an ideal model should address the discrepancies in the query and convey them to the users rather than generating the best possible answer. Address…

Cited by 3SourcePDFScholar
2021

Humor Knowledge Enriched Transformer for Understanding Multimodal Humor

AAAI 2021technical

Recognizing humor from a video utterance requires understanding the verbal and non-verbal components as well as incorporating the appropriate context and external knowledge. In this paper, we propose Humor Knowledge enriched Transformer (HKT) that can capture the gist of a multimodal humorous expres…