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Current deep learning methods are regarded as favorable if they empirically perform well on dedicated test sets. This mentality is seamlessly reflected in the resurfacing area of continual learning, where consecutively arriving data is…

Machine Learning · Computer Science 2023-01-25 Martin Mundt , Yongwon Hong , Iuliia Pliushch , Visvanathan Ramesh

A more realistic object detection paradigm, Open-World Object Detection, has arisen increasing research interests in the community recently. A qualified open-world object detector can not only identify objects of known categories, but also…

Computer Vision and Pattern Recognition · Computer Science 2022-02-17 Shuo Yang , Peize Sun , Yi Jiang , Xiaobo Xia , Ruiheng Zhang , Zehuan Yuan , Changhu Wang , Ping Luo , Min Xu

The findings on open-set recognition (OSR) show that models trained on classification datasets are capable of detecting unknown classes not encountered during the training process. Specifically, after training, the learned representations…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Jaewoo Park , Hojin Park , Eunju Jeong , Andrew Beng Jin Teoh

Deep neural networks have achieved state-of-the-art performance in a wide range of recognition/classification tasks. However, when applying deep learning to real-world applications, there are still multiple challenges. A typical challenge…

Machine Learning · Computer Science 2021-02-10 Xin Sun , Zhenning Yang , Chi Zhang , Guohao Peng , Keck-Voon Ling

Zero-shot Learners are models capable of predicting unseen classes. In this work, we propose a Zero-shot Learning approach for text categorization. Our method involves training model on a large corpus of sentences to learn the relationship…

Computation and Language · Computer Science 2017-12-27 Pushpankar Kumar Pushp , Muktabh Mayank Srivastava

We consider the problem of estimating the class prior in an unlabeled dataset. Under the assumption that an additional labeled dataset is available, the class prior can be estimated by fitting a mixture of class-wise data distributions to…

Machine Learning · Computer Science 2016-11-08 Marthinus C. du Plessis , Gang Niu , Masashi Sugiyama

In this paper, we formally address universal object detection, which aims to detect every scene and predict every category. The dependence on human annotations, the limited visual information, and the novel categories in the open world…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Zhenyu Wang , Yali Li , Xi Chen , Ser-Nam Lim , Antonio Torralba , Hengshuang Zhao , Shengjin Wang

Similarity-based method gives rise to a new class of methods for multi-label learning and also achieves promising performance. In this paper, we generalize this method, resulting in a new framework for classification task. Specifically, we…

Machine Learning · Computer Science 2022-03-08 Zhongchen Ma , Songcan Chen

In the process of exploring the world, the curiosity constantly drives humans to cognize new things. Supposing you are a zoologist, for a presented animal image, you can recognize it immediately if you know its class. Otherwise, you would…

Machine Learning · Computer Science 2019-08-15 Chuanxing Geng , Lue Tao , Songcan Chen

In many object recognition applications, the set of possible categories is an open set, and the deployed recognition system will encounter novel objects belonging to categories unseen during training. Detecting such "novel category" objects…

Computer Vision and Pattern Recognition · Computer Science 2022-07-29 Thomas G. Dietterich , Alexander Guyer

In open-set recognition (OSR), a promising strategy is exploiting pseudo-unknown data outside given $K$ known classes as an additional $K$+$1$-th class to explicitly model potential open space. However, treating unknown classes without…

Computer Vision and Pattern Recognition · Computer Science 2024-02-01 Chaohua Li , Enhao Zhang , Chuanxing Geng , SongCan Chen

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

Zero-shot learning methods typically assume that the new, unseen classes encountered during deployment come from the same distribution as the the classes in the training set. However, real-world scenarios often involve class distribution…

Machine Learning · Computer Science 2024-12-11 Yuli Slavutsky , Yuval Benjamini

Multiclass classifiers are often designed and evaluated only on a sample from the classes on which they will eventually be applied. Hence, their final accuracy remains unknown. In this work we study how a classifier's performance over the…

Machine Learning · Computer Science 2024-05-29 Yuli Slavutsky , Yuval Benjamini

The basic underlying assumption of machine learning (ML) models is that the training and test data are sampled from the same distribution. However, in daily practice, this assumption is often broken, i.e. the distribution of the test data…

Computation and Language · Computer Science 2026-01-16 Adriana Valentina Costache , Silviu Florin Gheorghe , Eduard Gabriel Poesina , Paul Irofti , Radu Tudor Ionescu

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

Many classification problems can be difficult to formulate directly in terms of the traditional supervised setting, where both training and test samples are individual feature vectors. There are cases in which samples are better described…

Machine Learning · Statistics 2016-07-12 Veronika Cheplygina , David M. J. Tax , Marco Loog

Set-valued classification, a new classification paradigm that aims to identify all the plausible classes that an observation belongs to, can be obtained by learning the acceptance regions for all classes. Many existing set-valued…

Machine Learning · Statistics 2022-09-22 Zhou Wang , Xingye Qiao

The analysis of broken glass is forensically important to reconstruct the events of a criminal act. In particular, the comparison between the glass fragments found on a suspect (recovered cases) and those collected on the crime scene…

Applications · Statistics 2019-05-08 Laura Anderlucci , Francesca Fortunato , Angela Montanari

Zero shot learning in Image Classification refers to the setting where images from some novel classes are absent in the training data but other information such as natural language descriptions or attribute vectors of the classes are…

Computer Vision and Pattern Recognition · Computer Science 2018-01-30 Ashish Mishra , M Shiva Krishna Reddy , Anurag Mittal , Hema A Murthy