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We study how to effectively leverage expert feedback to learn sequential decision-making policies. We focus on problems with sparse rewards and long time horizons, which typically pose significant challenges in reinforcement learning. We…

Machine Learning · Computer Science 2018-06-12 Hoang M. Le , Nan Jiang , Alekh Agarwal , Miroslav Dudík , Yisong Yue , Hal Daumé

Recent scene graph generation (SGG) frameworks have focused on learning complex relationships among multiple objects in an image. Thanks to the nature of the message passing neural network (MPNN) that models high-order interactions between…

Artificial Intelligence · Computer Science 2023-07-07 Kanghoon Yoon , Kibum Kim , Jinyoung Moon , Chanyoung Park

The field of self-supervised 3D representation learning has emerged as a promising solution to alleviate the challenge presented by the scarcity of extensive, well-annotated datasets. However, it continues to be hindered by the lack of…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Yunsong Wang , Na Zhao , Gim Hee Lee

The choice of good distances and similarity measures between objects is important for many machine learning methods. Therefore, many metric learning algorithms have been developed in recent years, mainly for Euclidean data in order to…

Machine Learning · Computer Science 2022-12-23 Yacouba Kaloga , Pierre Borgnat , Amaury Habrard

Long-term visual localization is the problem of estimating the camera pose of a given query image in a scene whose appearance changes over time. It is an important problem in practice, for example, encountered in autonomous driving. In…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Måns Larsson , Erik Stenborg , Carl Toft , Lars Hammarstrand , Torsten Sattler , Fredrik Kahl

Collaborative Metric Learning (CML) recently emerged as a powerful paradigm for recommendation based on implicit feedback collaborative filtering. However, standard CML methods learn fixed user and item representations, which fails to…

Information Retrieval · Computer Science 2021-08-11 Viet-Anh Tran , Guillaume Salha-Galvan , Romain Hennequin , Manuel Moussallam

Scene Graph Generation (SGG) serves a comprehensive representation of the images for human understanding as well as visual understanding tasks. Due to the long tail bias problem of the object and predicate labels in the available annotated…

Computer Vision and Pattern Recognition · Computer Science 2022-11-10 Anh Duc Bui , Soyeon Caren Han , Josiah Poon

Dynamic Scene Graph Generation (DSGG) for videos is a challenging task in computer vision. While existing approaches often focus on sophisticated architectural design and solely use recall during evaluation, we take a closer look at their…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Xuanming Cui , Jaiminkumar Ashokbhai Bhoi , Chionh Wei Peng , Adriel Kuek , Ser Nam Lim

The pre-training and fine-tuning methods have gained widespread attention in the field of heterogeneous graph neural networks due to their ability to leverage large amounts of unlabeled data during the pre-training phase, allowing the model…

Machine Learning · Computer Science 2025-07-11 Pengfei Jiao , Jialong Ni , Di Jin , Xuan Guo , Huan Liu , Hongjiang Chen , Yanxian Bi

Scene Graph Generation (SGG) suffers from a long-tailed distribution, where a few predicate classes dominate while many others are underrepresented, leading to biased models that underperform on rare relations. Unbiased-SGG methods address…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Runfeng Qu , Ole Hall , Pia K Bideau , Julie Ouerfelli-Ethier , Martin Rolfs , Klaus Obermayer , Olaf Hellwich

Link prediction is a fundamental task in graph learning, inherently shaped by the topology of the graph. While traditional heuristics are grounded in graph topology, they encounter challenges in generalizing across diverse graphs. Recent…

Machine Learning · Computer Science 2024-06-18 Juzheng Zhang , Lanning Wei , Zhen Xu , Quanming Yao

Balancing performance trade-off on long-tail (LT) data distributions remains a long-standing challenge. In this paper, we posit that this dilemma stems from a phenomenon called "tail performance degradation" (the model tends to severely…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Shenghan Chen , Yiming Liu , Yanzhen Wang , Yujia Wang , Xiankai Lu

Scene graph aims to faithfully reveal humans' perception of image content. When humans analyze a scene, they usually prefer to describe image gist first, namely major objects and key relations in a scene graph. This humans' inherent…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Wenbin Wang , Ruiping Wang , Shiguang Shan , Xilin Chen

Continual learning requires a model to adapt to ongoing changes in the data distribution, and often to the set of tasks to be performed. It is rare, however, that the data and task changes are completely unpredictable. Given a description…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Mark D. McDonnell , Dong Gong , Ehsan Abbasnejad , Anton van den Hengel

Image and video generative models that are pre-trained on Internet-scale data can greatly increase the generalization capacity of robot learning systems. These models can function as high-level planners, generating intermediate subgoals for…

Hierarchical reinforcement learning (HRL) proposes to solve difficult tasks by performing decision-making and control at successively higher levels of temporal abstraction. However, off-policy HRL often suffers from the problem of a…

Machine Learning · Computer Science 2023-03-14 Vivienne Huiling Wang , Joni Pajarinen , Tinghuai Wang , Joni-Kristian Kämäräinen

Learning self-supervised image representations has been broadly studied to boost various visual understanding tasks. Existing methods typically learn a single level of image semantics like pairwise semantic similarity or image clustering…

Computer Vision and Pattern Recognition · Computer Science 2022-05-27 Minghao Xu , Yuanfan Guo , Xuanyu Zhu , Jiawen Li , Zhenbang Sun , Jian Tang , Yi Xu , Bingbing Ni

Deep learning is also known as hierarchical learning, where the learner _learns_ to represent a complicated target function by decomposing it into a sequence of simpler functions to reduce sample and time complexity. This paper formally…

Machine Learning · Computer Science 2023-07-10 Zeyuan Allen-Zhu , Yuanzhi Li

Object re-identification method is made up of backbone network, feature aggregation, and loss function. However, most backbone networks lack a special mechanism to handle rich scale variations and mine discriminative feature…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 Fei Shen , Mengwan Wei , Junchi Ren

The significant amount of training data required for training Convolutional Neural Networks has become a bottleneck for applications like semantic segmentation. Few-shot semantic segmentation algorithms address this problem, with an aim to…

Computer Vision and Pattern Recognition · Computer Science 2020-09-16 Ayyappa Kumar Pambala , Titir Dutta , Soma Biswas
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