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Semantic segmentation in a supervised learning manner has achieved significant progress in recent years. However, its performance usually drops dramatically due to the data-distribution discrepancy between seen and unseen domains when we…

Computer Vision and Pattern Recognition · Computer Science 2021-09-01 Jian Zhang , Lei Qi , Yinghuan Shi , Yang Gao

The well known domain shift issue causes model performance to degrade when deployed to a new target domain with different statistics to training. Domain adaptation techniques alleviate this, but need some instances from the target domain to…

Machine Learning · Computer Science 2019-06-11 Yiying Li , Yongxin Yang , Wei Zhou , Timothy M. Hospedales

Generative based strategy has shown great potential in the Generalized Zero-Shot Learning task. However, it suffers severe generalization problem due to lacking of feature diversity for unseen classes to train a good classifier. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Bonan Li , Xuecheng Nie , Congying Han

Meta-learning provides a promising way for learning to efficiently learn and achieves great success in many applications. However, most meta-learning literature focuses on dealing with tasks from a same domain, making it brittle to…

Machine Learning · Computer Science 2021-07-26 Pinzhuo Tian , Yao Gao

In this paper we consider a version of the zero-shot learning problem where seen class source and target domain data are provided. The goal during test-time is to accurately predict the class label of an unseen target domain instance based…

Computer Vision and Pattern Recognition · Computer Science 2015-09-29 Ziming Zhang , Venkatesh Saligrama

We present a generative framework for zero-shot action recognition where some of the possible action classes do not occur in the training data. Our approach is based on modeling each action class using a probability distribution whose…

Computer Vision and Pattern Recognition · Computer Science 2018-01-30 Ashish Mishra , Vinay Kumar Verma , M Shiva Krishna Reddy , Arulkumar S , Piyush Rai , Anurag Mittal

Domain shift across crowd data severely hinders crowd counting models to generalize to unseen scenarios. Although domain adaptive crowd counting approaches close this gap to a certain extent, they are still dependent on the target domain…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Zhipeng Du , Jiankang Deng , Miaojing Shi

We present a generative framework for generalized zero-shot learning where the training and test classes are not necessarily disjoint. Built upon a variational autoencoder based architecture, consisting of a probabilistic encoder and a…

Machine Learning · Computer Science 2018-06-13 Vinay Kumar Verma , Gundeep Arora , Ashish Mishra , Piyush Rai

Zero-Shot Learning (ZSL) aims to classify a test instance from an unseen category based on the training instances from seen categories, in which the gap between seen categories and unseen categories is generally bridged via visual-semantic…

Computer Vision and Pattern Recognition · Computer Science 2017-12-14 Li Niu , Jianfei Cai , Ashok Veeraraghavan

Generalized zero shot learning (GZSL) is defined by a training process containing a set of visual samples from seen classes and a set of semantic samples from seen and unseen classes, while the testing process consists of the classification…

Computer Vision and Pattern Recognition · Computer Science 2019-02-07 Rafael Felix , Michele Sasdelli , Ian Reid , Gustavo Carneiro

Zero-shot action recognition can recognize samples of unseen classes that are unavailable in training by exploring common latent semantic representation in samples. However, most methods neglected the connotative relation and extensional…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Bin Sun , Dehui Kong , Shaofan Wang , Jinghua Li , Baocai Yin , Xiaonan Luo

A common problem with most zero and few-shot learning approaches is they suffer from bias towards seen classes resulting in sub-optimal performance. Existing efforts aim to utilize unlabeled images from unseen classes (i.e transductive…

Computer Vision and Pattern Recognition · Computer Science 2021-07-15 Gaurav Bhatt , Shivam Chandhok , Vineeth N Balasubramanian

Domain generalization aims at training machine learning models to perform robustly across different and unseen domains. Several recent methods use multiple datasets to train models to extract domain-invariant features, hoping to generalize…

Machine Learning · Computer Science 2021-05-19 Mattia Segu , Alessio Tonioni , Federico Tombari

Zero-shot detection (ZSD) is a challenging task where we aim to recognize and localize objects simultaneously, even when our model has not been trained with visual samples of a few target ("unseen") classes. Recently, methods employing…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Sandipan Sarma , Sushil Kumar , Arijit Sur

We present a meta-learning based generative model for zero-shot learning (ZSL) towards a challenging setting when the number of training examples from each \emph{seen} class is very few. This setup contrasts with the conventional ZSL…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Vinay Kumar Verma , Ashish Mishra , Anubha Pandey , Hema A. Murthy , Piyush Rai

Synthesizing pseudo samples is currently the most effective way to solve the Generalized Zero-Shot Learning (GZSL) problem. Most models achieve competitive performance but still suffer from two problems: (1) Feature confounding, the overall…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Yaogong Feng , Xiaowen Huang , Pengbo Yang , Jian Yu , Jitao Sang

We present a deep generative model for learning to predict classes not seen at training time. Unlike most existing methods for this problem, that represent each class as a point (via a semantic embedding), we represent each seen/unseen…

Machine Learning · Computer Science 2017-11-21 Wenlin Wang , Yunchen Pu , Vinay Kumar Verma , Kai Fan , Yizhe Zhang , Changyou Chen , Piyush Rai , Lawrence Carin

Generalised zero-shot learning (GZSL) methods aim to classify previously seen and unseen visual classes by leveraging the semantic information of those classes. In the context of GZSL, semantic information is non-visual data such as a text…

Computer Vision and Pattern Recognition · Computer Science 2019-08-07 Rafael Felix , Ben Harwood , Michele Sasdelli , Gustavo Carneiro

A major obstacle to the wide-spread adoption of neural retrieval models is that they require large supervised training sets to surpass traditional term-based techniques, which are constructed from raw corpora. In this paper, we propose an…

Information Retrieval · Computer Science 2021-01-28 Ji Ma , Ivan Korotkov , Yinfei Yang , Keith Hall , Ryan McDonald

Given semantic descriptions of object classes, zero-shot learning aims to accurately recognize objects of the unseen classes, from which no examples are available at the training stage, by associating them to the seen classes, from which…

Computer Vision and Pattern Recognition · Computer Science 2016-05-31 Soravit Changpinyo , Wei-Lun Chao , Boqing Gong , Fei Sha