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Crowdsourced social media imagery provides real-time visual evidence of urban flooding but often lacks reliable geographic metadata for emergency response. Existing Visual Place Recognition (VPR) models struggle to geo-localize these images…

Computation and Language · Computer Science 2026-04-21 Fengyi Xu , Jun Ma , Waishan Qiu , Cui Guo , Jack C. P. Cheng

Visual place recognition (VPR) remains challenging due to significant viewpoint changes and appearance variations. Mainstream works tackle these challenges by developing various feature aggregation methods to transform deep features into…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Teng Wang , Lingquan Meng , Lei Cheng , Changyin Sun

In this paper, we study the challenges of detecting events on social media, where traditional unimodal systems struggle due to the rapid and multimodal nature of data dissemination. We employ a range of models, including unimodal ModernBERT…

Rapid, fine-grained disaster damage assessment is essential for effective emergency response, yet remains challenging due to limited ground sensors and delays in official reporting. Social media provides a rich, real-time source of…

Computation and Language · Computer Science 2025-06-05 Zihui Ma , Lingyao Li , Juan Li , Wenyue Hua , Jingxiao Liu , Qingyuan Feng , Yuki Miura

Multimodal large language models (MLLMs) have achieved impressive performance across various tasks such as image captioning and visual question answer(VQA); however, they often struggle to accurately interpret depth information inherent in…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Hao Yang , Hongbo Zhang , Yanyan Zhao , Bing Qin

Vision model have gained increasing attention due to their simplicity and efficiency in Scene Text Recognition (STR) task. However, due to lacking the perception of linguistic knowledge and information, recent vision models suffer from two…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Boqiang Zhang , Hongtao Xie , Yuxin Wang , Jianjun Xu , Yongdong Zhang

During crises, social media serves as a crucial coordination tool, but the vast influx of posts--from "actionable" requests and offers to generic content like emotional support, behavioural guidance, or outdated information--complicates…

Computation and Language · Computer Science 2025-02-25 Rabindra Lamsal , Maria Rodriguez Read , Shanika Karunasekera , Muhammad Imran

Pretrained contextualized representations offer great success for many downstream tasks, including document ranking. The multilingual versions of such pretrained representations provide a possibility of jointly learning many languages with…

Information Retrieval · Computer Science 2021-09-16 Zhiqi Huang , Hamed Bonab , Sheikh Muhammad Sarwar , Razieh Rahimi , James Allan

Multimodal large language models (MLLMs) have shown satisfactory effects in many autonomous driving tasks. In this paper, MLLMs are utilized to solve joint semantic scene understanding and risk localization tasks, while only relying on…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Jiaqi Fan , Jianhua Wu , Jincheng Gao , Jianhao Yu , Yafei Wang , Hongqing Chu , Bingzhao Gao

With the growing number and diversity of Vision-Language Models (VLMs), many works explore language-based ensemble, collaboration, and routing techniques across multiple VLMs to improve multi-model reasoning. In contrast, we address the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Selim Furkan Tekin , Yichang Xu , Gaowen Liu , Ramana Rao Kompella , Margaret L. Loper , Ling Liu

Existing works on weakly-supervised audio-visual video parsing adopt hybrid attention network (HAN) as the multi-modal embedding to capture the cross-modal context. It embeds the audio and visual modalities with a shared network, where the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-15 Yating Xu , Conghui Hu , Gim Hee Lee

Vision-language models (VLMs) are highly effective but often underperform on specialized tasks; for example, Llava-1.5 struggles with chart and diagram understanding due to scarce task-specific training data. Existing training data, sourced…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Siddharth Joshi , Besmira Nushi , Vidhisha Balachandran , Varun Chandrasekaran , Vibhav Vineet , Neel Joshi , Baharan Mirzasoleiman

Multimodal Large Language Models (MLLMs) have displayed remarkable performance in multi-modal tasks, particularly in visual comprehension. However, we reveal that MLLMs often generate incorrect answers even when they understand the visual…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Yexin Liu , Zhengyang Liang , Yueze Wang , Xianfeng Wu , Feilong Tang , Muyang He , Jian Li , Zheng Liu , Harry Yang , Sernam Lim , Bo Zhao

Large language model-powered chatbots have transformed how people seek information, especially in high-stakes contexts like mental health. Despite their support capabilities, safe detection and response to crises such as suicidal ideation…

Computation and Language · Computer Science 2026-04-09 Adrian Arnaiz-Rodriguez , Miguel Baidal , Erik Derner , Jenn Layton Annable , Mark Ball , Mark Ince , Elvira Perez Vallejos , Nuria Oliver

Large Vision-Language Models (LVLMs) have achieved remarkable success in a wide range of multimodal tasks by integrating pre-trained vision encoders and large language models. However, current LVLMs primarily rely on visual features…

Computer Vision and Pattern Recognition · Computer Science 2025-01-20 Xu Li , Yi Zheng , Haotian Chen , Xiaolei Chen , Yuxuan Liang , Chenghang Lai , Bin Li , Xiangyang Xue

Multimodal learning from document data has achieved great success lately as it allows to pre-train semantically meaningful features as a prior into a learnable downstream task. In this paper, we approach the document classification problem…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Souhail Bakkali , Zuheng Ming , Mickael Coustaty , Marçal Rusiñol , Oriol Ramos Terrades

Attention mechanism has been used as an important component across Vision-and-Language(VL) tasks in order to bridge the semantic gap between visual and textual features. While attention has been widely used in VL tasks, it has not been…

Computer Vision and Pattern Recognition · Computer Science 2022-09-23 Feiqi Cao , Soyeon Caren Han , Siqu Long , Changwei Xu , Josiah Poon

Existing vision-language pre-training (VLP) methods primarily rely on paired image-text datasets, which are either annotated by enormous human labors, or crawled from the internet followed by elaborate data cleaning techniques. To reduce…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Teng Wang , Wenhao Jiang , Zhichao Lu , Feng Zheng , Ran Cheng , Chengguo Yin , Ping Luo

(Natural Language Processing) NLP techniques such as text classification and topic discovery are very useful in many application areas including information retrieval, knowledge discovery, policy formulation, and decision-making. However,…

Computation and Language · Computer Science 2026-02-13 Jingyan Xu , Marcelo L. LaFleur , Christina Schweikert , D. Frank Hsu

The evaluation of cross-lingual semantic search models is often limited to existing datasets from tasks such as information retrieval and semantic textual similarity. We introduce Cross-Lingual Semantic Discrimination (CLSD), a lightweight…

Computation and Language · Computer Science 2025-10-10 Andrianos Michail , Simon Clematide , Rico Sennrich