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We propose a novel approach for unsupervised zero-shot learning (ZSL) of classes based on their names. Most existing unsupervised ZSL methods aim to learn a model for directly comparing image features and class names. However, this proves…

Computer Vision and Pattern Recognition · Computer Science 2017-08-08 Berkan Demirel , Ramazan Gokberk Cinbis , Nazli Ikizler-Cinbis

How can we extend a pre-trained model to many language understanding tasks, without labeled or additional unlabeled data? Pre-trained language models (PLMs) have been effective for a wide range of NLP tasks. However, existing approaches…

Computation and Language · Computer Science 2023-05-29 Xuandong Zhao , Siqi Ouyang , Zhiguo Yu , Ming Wu , Lei Li

Recent Vision-Language Models (VLMs) enable zero-shot classification by aligning images and text in a shared space, a promising approach for data-scarce conditions. However, the influence of prompt design on recognizing visually similar…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 MingZe Tang , Jubal Chandy Jacob

Few-shot learning addresses the issue of classifying images using limited labeled data. Exploiting unlabeled data through the use of transductive inference methods such as label propagation has been shown to improve the performance of…

Computer Vision and Pattern Recognition · Computer Science 2023-11-01 Michalis Lazarou , Yannis Avrithis , Guangyu Ren , Tania Stathaki

Natural language prompts have been shown to facilitate cross-task generalization for large language models. However, with no or limited labeled examples, the cross-task performance is highly sensitive to the choice of prompts, while…

Computation and Language · Computer Science 2022-11-10 Chonghua Liao , Yanan Zheng , Zhilin Yang

Machine learning especially deep neural networks have achieved great success but many of them often rely on a number of labeled samples for supervision. As sufficient labeled training data are not always ready due to e.g., continuously…

Machine Learning · Computer Science 2022-12-06 Jiaoyan Chen , Yuxia Geng , Zhuo Chen , Jeff Z. Pan , Yuan He , Wen Zhang , Ian Horrocks , Huajun Chen

Zero-shot learning (ZSL) can be formulated as a cross-domain matching problem: after being projected into a joint embedding space, a visual sample will match against all candidate class-level semantic descriptions and be assigned to the…

Computer Vision and Pattern Recognition · Computer Science 2018-12-12 Lei Zhang , Peng Wang , Lingqiao Liu , Chunhua Shen , Wei Wei , Yannning Zhang , Anton Van Den Hengel

Generalised zero-shot learning (GZSL) is a classification problem where the learning stage relies on a set of seen visual classes and the inference stage aims to identify both the seen visual classes and a new set of unseen visual classes.…

Computer Vision and Pattern Recognition · Computer Science 2019-08-15 Rafael Felix , Ben Harwood , Michele Sasdelli , Gustavo Carneiro

Zero-Shot Learning (ZSL) in video classification is a promising research direction, which aims to tackle the challenge from explosive growth of video categories. Most existing methods exploit seen-to-unseen correlation via learning a…

Computer Vision and Pattern Recognition · Computer Science 2018-04-27 Chenrui Zhang , Yuxin Peng

Label information plays an important role in supervised hyperspectral image classification problem. However, current classification methods all ignore an important and inevitable problem---labels may be corrupted and collecting clean labels…

Computer Vision and Pattern Recognition · Computer Science 2019-04-03 Junjun Jiang , Jiayi Ma , Zheng Wang , Chen Chen , Xianming Liu

Supervised learning requires a sufficient training dataset which includes all label. However, there are cases that some class is not in the training data. Zero-Shot Learning (ZSL) is the task of predicting class that is not in the training…

Machine Learning · Computer Science 2020-07-02 Toshitaka Hayashi , Hamido Fujita

Zero-shot recognition (ZSR) deals with the problem of predicting class labels for target domain instances based on source domain side information (e.g. attributes) of unseen classes. We formulate ZSR as a binary prediction problem. Our…

Computer Vision and Pattern Recognition · Computer Science 2016-08-22 Ziming Zhang , Venkatesh Saligrama

Zero-shot learning (ZSL) which aims to recognize unseen classes with no labeled training sample, efficiently tackles the problem of missing labeled data in image retrieval. Nowadays there are mainly two types of popular methods for ZSL to…

Computer Vision and Pattern Recognition · Computer Science 2018-10-30 Gang Yang , Jinlu Liu , Xirong Li

The success of semi-supervised learning crucially relies on the scalability to a huge amount of unlabelled data that are needed to capture the underlying manifold structure for better classification. Since computing the pairwise similarity…

Machine Learning · Computer Science 2017-03-01 Raphael Petegrosso , Wei Zhang , Zhuliu Li , Yousef Saad , Rui Kuang

The effectiveness of zero-shot classification in large vision-language models (VLMs), such as Contrastive Language-Image Pre-training (CLIP), depends on access to extensive, well-aligned text-image datasets. In this work, we introduce two…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Anju Rani , Daniel O. Arroyo , Petar Durdevic

Classification of pathological images is the basis for automatic cancer diagnosis. Despite that deep learning methods have achieved remarkable performance, they heavily rely on labeled data, demanding extensive human annotation efforts. In…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Lanfeng Zhong , Zongyao Huang , Yang Liu , Wenjun Liao , Shichuan Zhang , Guotai Wang , Shaoting Zhang

Hash coding has been widely used in approximate nearest neighbor search for large-scale image retrieval. Given semantic annotations such as class labels and pairwise similarities of the training data, hashing methods can learn and generate…

Computer Vision and Pattern Recognition · Computer Science 2021-07-01 Qin Zou , Zheng Zhang , Ling Cao , Long Chen , Song Wang

Collecting training images for all visual categories is not only expensive but also impractical. Zero-shot learning (ZSL), especially using attributes, offers a pragmatic solution to this problem. However, at test time most attribute-based…

Computer Vision and Pattern Recognition · Computer Science 2016-10-18 Ziad Al-Halah , Makarand Tapaswi , Rainer Stiefelhagen

Zero-shot text classifiers based on label descriptions embed an input text and a set of labels into the same space: measures such as cosine similarity can then be used to select the most similar label description to the input text as the…

Computation and Language · Computer Science 2022-05-25 Angelo Basile , Marc Franco-Salvador , Paolo Rosso

Semantic segmentation is a crucial task in computer vision that involves segmenting images into semantically meaningful regions at the pixel level. However, existing approaches often rely on expensive human annotations as supervision for…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Jun Chen , Deyao Zhu , Guocheng Qian , Bernard Ghanem , Zhicheng Yan , Chenchen Zhu , Fanyi Xiao , Mohamed Elhoseiny , Sean Chang Culatana