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This work defines a new framework for performance evaluation of polyphonic sound event detection (SED) systems, which overcomes the limitations of the conventional collar-based event decisions, event F-scores and event error rates. The…

Audio and Speech Processing · Electrical Eng. & Systems 2020-02-17 Cagdas Bilen , Giacomo Ferroni , Francesco Tuveri , Juan Azcarreta , Sacha Krstulovic

Few-shot semantic segmentation aims to segment novel-class objects in a query image with only a few annotated examples in support images. Most of advanced solutions exploit a metric learning framework that performs segmentation through…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Jiacheng Chen , Bin-Bin Gao , Zongqing Lu , Jing-Hao Xue , Chengjie Wang , Qingmin Liao

Automatic evaluation for Open Domain Event Detection (ODED) is a highly challenging task, because ODED is characterized by a vast diversity of un-constrained output labels from various domains. Nearly all existing evaluation methods for…

Computation and Language · Computer Science 2025-05-26 Yi-Fan Lu , Xian-Ling Mao , Tian Lan , Tong Zhang , Yu-Shi Zhu , Heyan Huang

Few-shot named entity recognition (NER) enables us to build a NER system for a new domain using very few labeled examples. However, existing prototypical networks for this task suffer from roughly estimated label dependency and closely…

Computation and Language · Computer Science 2022-08-18 Bin Ji , Shasha Li , Shaoduo Gan , Jie Yu , Jun Ma , Huijun Liu

Previously, using forward-flux sampling (FFS) and machine learning (ML), we developed multivariate alarm systems to counter rare un-postulated abnormal events. Our alarm systems utilized ML-based predictive models to quantify committer…

Machine Learning · Computer Science 2024-09-04 Vikram Sudarshan , Warren D. Seider

Few-shot action recognition in videos is challenging for its lack of supervision and difficulty in generalizing to unseen actions. To address this task, we propose a simple yet effective method, called knowledge prompting, which leverages…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Yuheng Shi , Xinxiao Wu , Hanxi Lin

Pedestrian attribute recognition has received increasing attention due to its important role in video surveillance applications. However, most existing methods are designed for a fixed set of attributes. They are unable to handle the…

Computer Vision and Pattern Recognition · Computer Science 2019-06-25 Liuyu Xiang , Xiaoming Jin , Guiguang Ding , Jungong Han , Leida Li

Few-shot classification studies the problem of quickly adapting a deep learner to understanding novel classes based on few support images. In this context, recent research efforts have been aimed at designing more and more complex…

Computer Vision and Pattern Recognition · Computer Science 2022-02-21 Jun He , Richang Hong , Xueliang Liu , Mingliang Xu , Qianru Sun

In a surprising turn, Large Language Models (LLMs) together with a growing arsenal of prompt-based heuristics now offer powerful off-the-shelf approaches providing few-shot solutions to myriad classic NLP problems. However, despite…

Computation and Language · Computer Science 2023-06-21 Dhananjay Ashok , Zachary C. Lipton

Event detection has long been troubled by the \emph{trigger curse}: overfitting the trigger will harm the generalization ability while underfitting it will hurt the detection performance. This problem is even more severe in few-shot…

Computation and Language · Computer Science 2021-09-14 Jiawei Chen , Hongyu Lin , Xianpei Han , Le Sun

Rare events, despite their infrequency, often carry critical information and require immediate attentions in mission-critical applications such as autonomous driving, healthcare, and industrial automation. The data-intensive nature of these…

Machine Learning · Computer Science 2025-01-07 You Zhou , Changsheng You , Kaibin Huang

Recent approaches for few-shot 3D point cloud semantic segmentation typically require a two-stage learning process, i.e., a pre-training stage followed by a few-shot training stage. While effective, these methods face overreliance on…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Jiahui Wang , Haiyue Zhu , Haoren Guo , Abdullah Al Mamun , Cheng Xiang , Tong Heng Lee

Few-shot object counting has garnered significant attention for its practicality as it aims to count target objects in a query image based on given exemplars without additional training. However, the prevailing extract-and-match approach…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yerim Jeon , Subeen Lee , Jihwan Kim , Jae-Pil Heo

Few-shot semantic segmentation aims to learn to segment new object classes with only a few annotated examples, which has a wide range of real-world applications. Most existing methods either focus on the restrictive setting of one-way…

Computer Vision and Pattern Recognition · Computer Science 2022-12-05 Yongfei Liu , Xiangyi Zhang , Songyang Zhang , Xuming He

Few-shot named entity recognition (NER) systems aims at recognizing new classes of entities based on a few labeled samples. A significant challenge in the few-shot regime is prone to overfitting than the tasks with abundant samples. The…

Computation and Language · Computer Science 2023-05-04 Zhen Yang , Yongbin Liu , Chunping Ouyang

Few-shot knowledge graph relational learning seeks to perform reasoning over relations given only a limited number of training examples. While existing approaches largely adopt a meta-learning framework for enabling fast adaptation to new…

Machine Learning · Computer Science 2026-01-13 Han Wu , Jie Yin

Few-shot learning, which aims at extracting new concepts rapidly from extremely few examples of novel classes, has been featured into the meta-learning paradigm recently. Yet, the key challenge of how to learn a generalizable classifier…

Machine Learning · Computer Science 2019-10-08 Limeng Qiao , Yemin Shi , Jia Li , Yaowei Wang , Tiejun Huang , Yonghong Tian

This paper tackles the problem of few-shot learning, which aims to learn new visual concepts from a few examples. A common problem setting in few-shot classification assumes random sampling strategy in acquiring data labels, which is…

Computer Vision and Pattern Recognition · Computer Science 2022-01-10 Shipeng Yan , Songyang Zhang , Xuming He

Self-Explainable Models (SEMs) rely on Prototypical Concept Learning (PCL) to enable their visual recognition processes more interpretable, but they often struggle in data-scarce settings where insufficient training samples lead to…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Zhong Ji , Rongshuai Wei , Jingren Liu , Yanwei Pang , Jungong Han

Labeling data is often expensive and time-consuming, especially for tasks such as object detection and instance segmentation, which require dense labeling of the image. While few-shot object detection is about training a model on novel…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Gabriel Huang , Issam Laradji , David Vazquez , Simon Lacoste-Julien , Pau Rodriguez