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This paper investigates the problem of Generalized Category Discovery (GCD). Given a partially labelled dataset, GCD aims to categorize all unlabelled images, regardless of whether they belong to known or unknown classes. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Zhenqi He , Yuanpei Liu , Kai Han

Generalized Class Discovery (GCD) clusters base and novel classes in a target domain using supervision from a source domain with only base classes. Current methods often falter with distribution shifts and typically require access to target…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Vaibhav Rathore , Shubhranil B , Saikat Dutta , Sarthak Mehrotra , Zsolt Kira , Biplab Banerjee

Generalized Category Discovery (GCD) aims to classify unlabelled images from both `seen' and `unseen' classes by transferring knowledge from a set of labelled `seen' class images. A key theme in existing GCD approaches is adapting…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Hongjun Wang , Sagar Vaze , Kai Han

A desirable open world recognition (OWR) system requires performing three tasks: (1) Open set recognition (OSR), i.e., classifying the known (classes seen during training) and rejecting the unknown (unseen$/$novel classes) online; (2)…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Fulin Gao , Weimin Zhong , Zhixing Cao , Xin Peng , Zhi Li

Deep clustering as an important branch of unsupervised representation learning focuses on embedding semantically similar samples into the identical feature space. This core demand inspires the exploration of contrastive learning and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Haifeng Xia , Hai Huang , Zhengming Ding

Multimodal Large Language Models (MLLMs) have advanced open-world action understanding and can be adapted as generative classifiers for closed-set settings by autoregressively generating action labels as text. However, this approach is…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Zhanzhong Pang , Dibyadip Chatterjee , Fadime Sener , Angela Yao

Large Language Models (LLMs) are increasingly used for question answering over scientific research papers. Existing retrieval augmentation methods often rely on isolated text chunks or concepts, but overlook deeper semantic connections…

Computation and Language · Computer Science 2026-01-30 Jiayin Lan , Jiaqi Li , Baoxin Wang , Ming Liu , Dayong Wu , Shijin Wang , Bing Qin , Guoping Hu

Accurate brain tumor classification is critical for intra-operative decision making in neuro-oncological surgery. However, existing approaches are restricted to a fixed set of predefined classes and are therefore unable to capture patterns…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Matthias Perkonigg , Patrick Rockenschaub , Georg Göbel , Adelheid Wöhrer

Class distribution mismatch (CDM) refers to the discrepancy between class distributions in training data and target tasks. Previous methods address this by designing classifiers to categorize classes known during training, while grouping…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Pan Du , Wangbo Zhao , Xinai Lu , Nian Liu , Zhikai Li , Chaoyu Gong , Suyun Zhao , Hong Chen , Cuiping Li , Kai Wang , Yang You

Causal discovery (CD) plays a pivotal role in numerous scientific fields by clarifying the causal relationships that underlie phenomena observed in diverse disciplines. Despite significant advancements in CD algorithms that enhance bias and…

Machine Learning · Computer Science 2025-03-25 Khadija Zanna , Akane Sano

This paper explores generalised probabilistic modelling and uncertainty estimation in comparative LLM-as-a-judge frameworks. We show that existing Product-of-Experts methods are specific cases of a broader framework, enabling diverse…

Artificial Intelligence · Computer Science 2025-05-22 Yassir Fathullah , Mark J. F. Gales

Latent Class Models (LCMs) are used to cluster multivariate categorical data, commonly used to interpret survey responses. We propose a novel Bayesian model called the Equivalence Set Restricted Latent Class Model (ESRLCM). This model…

Machine Learning · Statistics 2024-06-07 Jesse Bowers , Steve Culpepper

Given unlabelled datasets containing both old and new categories, generalized category discovery (GCD) aims to accurately discover new classes while correctly classifying old classes. Current GCD methods only use a single visual modality of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Enguang Wang , Zhimao Peng , Zhengyuan Xie , Fei Yang , Xialei Liu , Ming-Ming Cheng

Aspect Category Detection (ACD) aims to identify implicit and explicit aspects in a given review sentence. The state-of-the-art approaches for ACD use Deep Neural Networks (DNNs) to address the problem as a multi-label classification task.…

Computation and Language · Computer Science 2024-04-09 Murtadha Ahmed , Qun Chen

Novel Categories Discovery (NCD) aims to cluster novel data based on the class semantics of known classes using the open-world partial class space annotated dataset. As an alternative to the traditional pseudo-labeling-based approaches, we…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Zahid Hasan , Abu Zaher Md Faridee , Masud Ahmed , Sanjay Purushotham , Heesung Kwon , Hyungtae Lee , Nirmalya Roy

Deep learning (DL)-based methods have recently shown great promise in bitemporal change detection (CD). Existing discriminative methods based on Convolutional Neural Networks (CNNs) and Transformers rely on discriminative representation…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Yihan Wen , Xianping Ma , Xiaokang Zhang , Man-On Pun

The discovery of causal relationships between random variables is an important yet challenging problem that has applications across many scientific domains. Differentiable causal discovery (DCD) methods are effective in uncovering causal…

Machine Learning · Computer Science 2024-10-29 Shiv Kampani , David Hidary , Constantijn van der Poel , Martin Ganahl , Brenda Miao

Retrieval and recommendation are two essential tasks in modern search tools. This paper introduces a novel retrieval-reranking framework leveraging Large Language Models (LLMs) to enhance the spatiotemporal and semantic associated mining…

Information Retrieval · Computer Science 2024-11-21 Yuanyuan Tian , Wenwen Li , Lei Hu , Xiao Chen , Michael Brook , Michael Brubaker , Fan Zhang , Anna K. Liljedahl

Large Language Models (LLMs) often generate inaccurate responses (hallucinations) when faced with questions beyond their knowledge scope. Retrieval-Augmented Generation (RAG) addresses this by leveraging external knowledge, but a critical…

Information Retrieval · Computer Science 2025-09-10 Haoxiang Jin , Ronghan Li , Zixiang Lu , Qiguang Miao

The news landscape is continuously evolving, with an ever-increasing volume of information from around the world. Automated event detection within this vast data repository is essential for monitoring, identifying, and categorizing…

Computation and Language · Computer Science 2024-07-09 Adane Nega Tarekegn
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