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Contrastive learning is a well-established paradigm in representation learning. The standard framework of contrastive learning minimizes the distance between "similar" instances and maximizes the distance between dissimilar ones in the…

Machine Learning · Computer Science 2025-02-06 Naghmeh Ghanooni , Barbod Pajoum , Harshit Rawal , Sophie Fellenz , Vo Nguyen Le Duy , Marius Kloft

The high cost of pixel-level annotations makes it appealing to train saliency detection models with weak supervision. However, a single weak supervision source usually does not contain enough information to train a well-performing model. To…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Yu Zeng , Yunzhi Zhuge , Huchuan Lu , Lihe Zhang , Mingyang Qian , Yizhou Yu

Few-shot named entity recognition (NER) aims at identifying named entities based on only few labeled instances. Most existing prototype-based sequence labeling models tend to memorize entity mentions which would be easily confused by close…

Computation and Language · Computer Science 2023-04-13 Guanting Dong , Zechen Wang , Liwen Wang , Daichi Guo , Dayuan Fu , Yuxiang Wu , Chen Zeng , Xuefeng Li , Tingfeng Hui , Keqing He , Xinyue Cui , Qixiang Gao , Weiran Xu

Despite the recent success of two-stage prototypical networks in few-shot named entity recognition (NER), challenges such as over/under-detected false spans in the span detection stage and unaligned entity prototypes in the type…

Computation and Language · Computer Science 2024-12-04 Quanjiang Guo , Yihong Dong , Ling Tian , Zhao Kang , Yu Zhang , Sijie Wang

Few-shot image classification aims to classify unseen classes with limited labelled samples. Recent works benefit from the meta-learning process with episodic tasks and can fast adapt to class from training to testing. Due to the limited…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Da Chen , Yuefeng Chen , Yuhong Li , Feng Mao , Yuan He , Hui Xue

Few-shot text classification aims to recognize unseen classes with limited labeled text samples. Existing approaches focus on boosting meta-learners by developing complex algorithms in the training stage. However, the labeled samples are…

Machine Learning · Computer Science 2026-03-04 Yunlong Gao , Xinyue Liu , Yingbo Wang , Linlin Zong , Bo Xu

Semi-supervised few-shot learning consists in training a classifier to adapt to new tasks with limited labeled data and a fixed quantity of unlabeled data. Many sophisticated methods have been developed to address the challenges this…

Computer Vision and Pattern Recognition · Computer Science 2022-09-29 Xiu-Shen Wei , He-Yang Xu , Faen Zhang , Yuxin Peng , Wei Zhou

Learning with few samples is a major challenge for parameter-rich models like deep networks. In contrast, people learn complex new concepts even from very few examples, suggesting that the sample complexity of learning can often be reduced.…

Machine Learning · Computer Science 2019-06-11 Roman Visotsky , Yuval Atzmon , Gal Chechik

Detecting implicit hate speech that is not directly hateful remains a challenge. Recent research has attempted to detect implicit hate speech by applying contrastive learning to pre-trained language models such as BERT and RoBERTa, but the…

Computation and Language · Computer Science 2024-06-13 Jaehoon Kim , Seungwan Jin , Sohyun Park , Someen Park , Kyungsik Han

Few-shot Learning (FSL), which endeavors to develop the generalization ability for recognizing novel classes using only a few images, faces significant challenges due to data scarcity. Recent CLIP-like methods based on contrastive…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Wei Zhuo , Runjie Luo , Wufeng Xue , Linlin Shen

Opinion phrase extraction is one of the key tasks in fine-grained sentiment analysis. While opinion expressions could be generic subjective expressions, aspect specific opinion expressions contain both the aspect as well as the opinion…

Computation and Language · Computer Science 2019-02-08 Abhishek Laddha , Arjun Mukherjee

Within the context of review analytics, aspects are the features of products and services at which customers target their opinions and sentiments. Aspect detection helps product owners and service providers to identify shortcomings and…

Computation and Language · Computer Science 2022-04-15 Mohammad Forouhesh , Arash Mansouri , Hossein Fani

Aspect category detection is one of the important and challenging subtasks of aspect-based sentiment analysis. Given a set of pre-defined categories, this task aims to detect categories which are indicated implicitly or explicitly in a…

Computation and Language · Computer Science 2019-06-24 Erfan Ghadery , Sajad Movahedi , Heshaam Faili , Azadeh Shakery

Recently, multi-view and multi-label classification have become significant domains for comprehensive data analysis and exploration. However, incompleteness both in views and labels is still a real-world scenario for multi-view multi-label…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Bingyan Nie , Wulin Xie , Jiang Long , Xiaohuan Lu

The aim of few-shot learning (FSL) is to learn how to recognize image categories from a small number of training examples. A central challenge is that the available training examples are normally insufficient to determine which visual…

Computer Vision and Pattern Recognition · Computer Science 2021-02-02 Kun Yan , Zied Bouraoui , Ping Wang , Shoaib Jameel , Steven Schockaert

Medical image analysis using deep learning is often challenged by limited labeled data and high annotation costs. Fine-tuning the entire network in label-limited scenarios can lead to overfitting and suboptimal performance. Recently, prompt…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Fan Bai , Ke Yan , Xiaoyu Bai , Xinyu Mao , Xiaoli Yin , Jingren Zhou , Yu Shi , Le Lu , Max Q. -H. Meng

Few-shot object detection aims to detect instances of specific categories in a query image with only a handful of support samples. Although this takes less effort than obtaining enough annotated images for supervised object detection, it…

Computer Vision and Pattern Recognition · Computer Science 2021-09-17 Hojun Lee , Myunggi Lee , Nojun Kwak

Sentence-level classification and sequential labeling are two fundamental tasks in language understanding. While these two tasks are usually modeled separately, in reality, they are often correlated, for example in intent classification and…

Computation and Language · Computer Science 2017-10-02 Mingbo Ma , Kai Zhao , Liang Huang , Bing Xiang , Bowen Zhou

Few-shot learning has been used to tackle the problem of label scarcity in text classification, of which meta-learning based methods have shown to be effective, such as the prototypical networks (PROTO). Despite the success of PROTO, there…

Computation and Language · Computer Science 2023-03-17 Chengcheng Han , Yuhe Wang , Yingnan Fu , Xiang Li , Minghui Qiu , Ming Gao , Aoying Zhou

Few-shot node classification, which aims to predict labels for nodes on graphs with only limited labeled nodes as references, is of great significance in real-world graph mining tasks. Particularly, in this paper, we refer to the task of…

Machine Learning · Computer Science 2023-06-28 Song Wang , Zhen Tan , Huan Liu , Jundong Li