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Related papers: Test-Time Discovery via Hashing Memory

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We study the new task of class-incremental Novel Class Discovery (class-iNCD), which refers to the problem of discovering novel categories in an unlabelled data set by leveraging a pre-trained model that has been trained on a labelled data…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Subhankar Roy , Mingxuan Liu , Zhun Zhong , Nicu Sebe , Elisa Ricci

Temporal difference learning (TD) is a foundational concept in reinforcement learning (RL), aimed at efficiently assessing a policy's value function. TD($\lambda$), a potent variant, incorporates a memory trace to distribute the prediction…

Machine Learning · Computer Science 2024-02-13 Jianfei Ma

How can we use AI to discover a new state of the art for a scientific problem? Prior work in test-time scaling, such as AlphaEvolve, performs search by prompting a frozen LLM. We perform reinforcement learning at test time, so the LLM can…

On-the-fly category discovery (OCD) aims to recognize known categories while simultaneously discovering novel ones from an unlabeled online stream, using a model trained only on labeled data. Existing approaches freeze the feature extractor…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Yanan Wu , Yuhan Yan , Tailai Chen , Zhixiang Chi , ZiZhang Wu , Yi Jin , Yang Wang , Zhenbo Li

Temporal difference (TD) methods constitute a class of methods for learning predictions in multi-step prediction problems, parameterized by a recency factor lambda. Currently the most important application of these methods is to temporal…

Artificial Intelligence · Computer Science 2008-02-03 P. Cichosz

Novel Class Discovery (NCD) is a learning paradigm, where a machine learning model is tasked to semantically group instances from unlabeled data, by utilizing labeled instances from a disjoint set of classes. In this work, we first…

Computer Vision and Pattern Recognition · Computer Science 2022-04-25 K J Joseph , Sujoy Paul , Gaurav Aggarwal , Soma Biswas , Piyush Rai , Kai Han , Vineeth N Balasubramanian

This paper tackles the problem of novel category discovery (NCD), which aims to discriminate unknown categories in large-scale image collections. The NCD task is challenging due to the closeness to the real-world scenarios, where we have…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Lu Zhang , Lu Qi , Xu Yang , Hong Qiao , Ming-Hsuan Yang , Zhiyong Liu

Novel Class Discovery (NCD) involves identifying new categories within unlabeled data by utilizing knowledge acquired from previously established categories. However, existing NCD methods often struggle to maintain a balance between the…

Machine Learning · Computer Science 2024-07-26 Yue Hou , Xueyuan Chen , He Zhu , Romei Liu , Bowen Shi , Jiaheng Liu , Junran Wu , Ke Xu

Humans possess an innate ability to identify and differentiate instances that they are not familiar with, by leveraging and adapting the knowledge that they have acquired so far. Importantly, they achieve this without deteriorating the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 K J Joseph , Sujoy Paul , Gaurav Aggarwal , Soma Biswas , Piyush Rai , Kai Han , Vineeth N Balasubramanian

Detecting anomalies has become an increasingly critical function in the financial service industry. Anomaly detection is frequently used in key compliance and risk functions such as financial crime detection fraud and cybersecurity. The…

Machine Learning · Computer Science 2023-12-29 Hongda Shen , Eren Kurshan

Temporal Networks, and more specifically, Markovian Temporal Networks, present a unique challenge regarding the community discovery task. The inherent dynamism of these systems requires an intricate understanding of memory effects and…

Physics and Society · Physics 2026-04-20 Giulio Virginio Clemente , Diego Garlaschelli

We tackle the problem of novel class discovery, which aims to learn novel classes without supervision based on labeled data from known classes. A key challenge lies in transferring the knowledge in the known-class data to the learning of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Peiyan Gu , Chuyu Zhang , Ruijie Xu , Xuming He

Deep Learning models have shown remarkable performance in a broad range of vision tasks. However, they are often vulnerable against domain shifts at test-time. Test-time training (TTT) methods have been developed in an attempt to mitigate…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Gustavo A. Vargas Hakim , David Osowiechi , Mehrdad Noori , Milad Cheraghalikhani , Ismail Ben Ayed , Christian Desrosiers

Machine learning methods strive to acquire a robust model during the training process that can effectively generalize to test samples, even in the presence of distribution shifts. However, these methods often suffer from performance…

Machine Learning · Computer Science 2024-12-13 Jian Liang , Ran He , Tieniu Tan

In the quest for unveiling novel categories at test time, we confront the inherent limitations of traditional supervised recognition models that are restricted by a predefined category set. While strides have been made in the realms of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Sarah Rastegar , Hazel Doughty , Cees G. M. Snoek

Novel Class Discovery (NCD) is a growing field where we are given during training a labeled set of known classes and an unlabeled set of different classes that must be discovered. In recent years, many methods have been proposed to address…

Deep neural networks based methods have been proved to achieve outstanding performance on object detection and classification tasks. Despite significant performance improvement, due to the deep structures, they still require prohibitive…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Mohammad Farhadi , Yezhou Yang

Discovering novel concepts in unlabelled datasets and in a continuous manner is an important desideratum of lifelong learners. In the literature such problems have been partially addressed under very restricted settings, where novel classes…

Computer Vision and Pattern Recognition · Computer Science 2024-08-26 Mingxuan Liu , Subhankar Roy , Zhun Zhong , Nicu Sebe , Elisa Ricci

In this paper, we consider a real-world scenario where a model that is trained on pre-defined classes continually encounters unlabeled data that contains both known and novel classes. The goal is to continually discover novel classes while…

Computer Vision and Pattern Recognition · Computer Science 2023-10-19 Yanan Wu , Zhixiang Chi , Yang Wang , Songhe Feng

On-the-Fly Category Discovery (OCD) aims to recognize known classes while simultaneously discovering emerging novel categories during inference, using supervision only from known classes during offline training. Existing approaches rely…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Bohan Zhang , Weidong Tang , Zhixiang Chi , Yi Jin , Zhenbo Li , Yang Wang , Yanan Wu
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