2025/10/04 by Adrian-Dinu Urse, Urse, Adrian-Dinu, Dumitru-Clementin Cercel +3
Computer Science · Social Sciences · #Artificial Intelligence (cs.AI) #Computation and Language (cs.CL) #Computer Vision and Pattern Recognition (cs.CV) #Computers and Society (cs.CY) #FOS: Computer and information sciences #Multimodal Machine Learning Applications #Public Relations and Crisis Communication #Seismology and Earthquake Studies
paper · pdf · doi:10.48550/arxiv.2511.00004
openalex publication_date 2025/10/04 · openalex created_date 2025/11/05 · openalex updated_date 2026/07/28
Natural disaster assessment relies on accurate and rapid access to information, with social media emerging as a valuable real-time source. However, existing datasets suffer from class imbalance and limited samples, making effective model development a challenging task. This paper explores augmentation techniques to address these issues on the CrisisMMD multimodal dataset. For visual data, we apply diffusion-based methods, namely Real Guidance and DiffuseMix. For text data, we explore back-translation, paraphrasing with transformers, and image caption-based augmentation. We evaluated these across unimodal, multimodal, and multi-view learning setups. Results show that selected augmentations improve classification performance, particularly for underrepresented classes, while multi-view learning introduces potential but requires further refinement. This study highlights effective augmentation strategies for building more robust disaster assessment systems.