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Weakly supervised semantic segmentation (WSSS) aims to bypass the need for laborious pixel-level annotation by using only image-level annotation. Most existing methods rely on Class Activation Maps (CAM) to derive pixel-level pseudo-labels…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Tianle Chen , Zheda Mai , Ruiwen Li , Wei-lun Chao

Sampling proper negatives from a large document pool is vital to effectively train a dense retrieval model. However, existing negative sampling strategies suffer from the uninformative or false negative problem. In this work, we empirically…

计算与语言 · 计算机科学 2022-10-25 Kun Zhou , Yeyun Gong , Xiao Liu , Wayne Xin Zhao , Yelong Shen , Anlei Dong , Jingwen Lu , Rangan Majumder , Ji-Rong Wen , Nan Duan , Weizhu Chen

Pixel-level crack segmentation is widely studied due to its high impact on building and road inspections. While recent studies have made significant improvements in accuracy, they typically heavily depend on pixel-level crack annotations,…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Yuki Inoue , Hiroto Nagayoshi

Frame-level micro- and macro-expression spotting methods require time-consuming frame-by-frame observation during annotation. Meanwhile, video-level spotting lacks sufficient information about the location and number of expressions during…

计算机视觉与模式识别 · 计算机科学 2024-03-22 Wang-Wang Yu , Xian-Shi Zhang , Fu-Ya Luo , Yijun Cao , Kai-Fu Yang , Hong-Mei Yan , Yong-Jie Li

Machine learning techniques applied to the Natural Language Processing (NLP) component of conversational agent development show promising results for improved accuracy and quality of feedback that a conversational agent can provide. The…

计算与语言 · 计算机科学 2020-10-27 Debajyoti Datta , Maria Phillips , Jennifer Chiu , Ginger S. Watson , James P. Bywater , Laura Barnes , Donald Brown

While there are novel point cloud semantic segmentation schemes that continuously surpass state-of-the-art results, the success of learning an effective model usually rely on the availability of abundant labeled data. However, data…

计算机视觉与模式识别 · 计算机科学 2021-10-07 Puzuo Wang , Wei Yao

3D medical image segmentation is a challenging task with crucial implications for disease diagnosis and treatment planning. Recent advances in deep learning have significantly enhanced fully supervised medical image segmentation. However,…

图像与视频处理 · 电气工程与系统科学 2025-06-23 Runmin Jiang , Zhaoxin Fan , Junhao Wu , Lenghan Zhu , Xin Huang , Tianyang Wang , Heng Huang , Min Xu

Compared with tedious per-pixel mask annotating, it is much easier to annotate data by clicks, which costs only several seconds for an image. However, applying clicks to learn video semantic segmentation model has not been explored before.…

计算机视觉与模式识别 · 计算机科学 2021-08-05 Peidong Liu , Zibin He , Xiyu Yan , Yong Jiang , Shutao Xia , Feng Zheng , Maowei Hu

Negative sampling is essential for implicit-feedback-based collaborative filtering, which is used to constitute negative signals from massive unlabeled data to guide supervised learning. The state-of-the-art idea is to utilize hard negative…

信息检索 · 计算机科学 2023-08-14 Yuhan Zhao , Rui Chen , Riwei Lai , Qilong Han , Hongtao Song , Li Chen

Existing weak supervision approaches use all the data covered by weak signals to train a classifier. We show both theoretically and empirically that this is not always optimal. Intuitively, there is a tradeoff between the amount of…

机器学习 · 统计学 2023-03-08 Hunter Lang , Aravindan Vijayaraghavan , David Sontag

Semantic segmentation aims to classify every pixel of an input image. Considering the difficulty of acquiring dense labels, researchers have recently been resorting to weak labels to alleviate the annotation burden of segmentation. However,…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Yazhou Yao , Tao Chen , Guosen Xie , Chuanyi Zhang , Fumin Shen , Qi Wu , Zhenmin Tang , Jian Zhang

Dominated point cloud-based 3D object detectors in autonomous driving scenarios rely heavily on the huge amount of accurately labeled samples, however, 3D annotation in the point cloud is extremely tedious, expensive and time-consuming. To…

计算机视觉与模式识别 · 计算机科学 2022-07-27 Junbo Yin , Jin Fang , Dingfu Zhou , Liangjun Zhang , Cheng-Zhong Xu , Jianbing Shen , Wenguan Wang

Text classification is essential for organizing unstructured text. Traditional methods rely on human annotations or, more recently, a set of class seed words for supervision, which can be costly, particularly for specialized or emerging…

计算与语言 · 计算机科学 2023-10-31 Priyanka Kargupta , Tanay Komarlu , Susik Yoon , Xuan Wang , Jiawei Han

Weakly supervised instance labeling using only image-level labels, in lieu of expensive fine-grained pixel annotations, is crucial in several applications including medical image analysis. In contrast to conventional instance segmentation…

计算机视觉与模式识别 · 计算机科学 2019-07-31 Jayaraman J. Thiagarajan , Satyananda Kashyap , Alexandros Karagyris

Learning semantic segmentation models requires a huge amount of pixel-wise labeling. However, labeled data may only be available abundantly in a domain different from the desired target domain, which only has minimal or no annotations. In…

计算机视觉与模式识别 · 计算机科学 2020-08-13 Sujoy Paul , Yi-Hsuan Tsai , Samuel Schulter , Amit K. Roy-Chowdhury , Manmohan Chandraker

In this paper, we explore a weakly supervised method for anomaly detection. Since annotating videos is time-consuming, we only look at weak video-level labels during training. This means that given a video, we know that it is either normal…

计算机视觉与模式识别 · 计算机科学 2026-05-14 Urvi Gianchandani , Praveen Tirupattur , Mubarak Shah

Weakly-supervised instance segmentation, which could greatly save labor and time cost of pixel mask annotation, has attracted increasing attention in recent years. The commonly used pipeline firstly utilizes conventional image segmentation…

计算机视觉与模式识别 · 计算机科学 2018-12-13 Shisha Liao , Yongqing Sun , Chenqiang Gao , Pranav Shenoy K P , Song Mu , Jun Shimamura , Atsushi Sagata

Nodule segmentation from breast ultrasound images is challenging yet essential for the diagnosis. Weakly-supervised segmentation (WSS) can help reduce time-consuming and cumbersome manual annotation. Unlike existing weakly-supervised…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Yuhao Huang , Xin Yang , Yuxin Zou , Chaoyu Chen , Jian Wang , Haoran Dou , Nishant Ravikumar , Alejandro F Frangi , Jianqiao Zhou , Dong Ni

Weakly-supervised text classification trains a classifier using the label name of each target class as the only supervision, which largely reduces human annotation efforts. Most existing methods first use the label names as static…

计算与语言 · 计算机科学 2023-10-23 Yunyi Zhang , Minhao Jiang , Yu Meng , Yu Zhang , Jiawei Han

A weakly supervised learning based clustering framework is proposed in this paper. As the core of this framework, we introduce a novel multiple instance learning task based on a bag level label called unique class count ($ucc$), which is…

计算机视觉与模式识别 · 计算机科学 2020-01-28 Mustafa Umit Oner , Hwee Kuan Lee , Wing-Kin Sung