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Most existing zero-shot learning approaches exploit transfer learning via an intermediate-level semantic representation shared between an annotated auxiliary dataset and a target dataset with different classes and no annotation. A…

Computer Vision and Pattern Recognition · Computer Science 2015-03-04 Yanwei Fu , Timothy M. Hospedales , Tao Xiang , Shaogang Gong

Existing unsupervised domain adaptation methods aim to transfer knowledge from a label-rich source domain to an unlabeled target domain. However, obtaining labels for some source domains may be very expensive, making complete labeling as…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Donghyun Kim , Kuniaki Saito , Tae-Hyun Oh , Bryan A. Plummer , Stan Sclaroff , Kate Saenko

Zero-shot learning deals with the ability to recognize objects without any visual training sample. To counterbalance this lack of visual data, each class to recognize is associated with a semantic prototype that reflects the essential…

Computer Vision and Pattern Recognition · Computer Science 2021-02-08 Yannick Le Cacheux , Hervé Le Borgne , Michel Crucianu

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

This paper studies zero-shot domain adaptation where each domain is indexed on a multi-dimensional array, and we only have data from a small subset of domains. Our goal is to produce predictors that perform well on \emph{unseen} domains. We…

Machine Learning · Computer Science 2021-06-15 Zhili Feng , Shaobo Han , Simon S. Du

Zero-shot skeleton-based action recognition aims to recognize actions of unseen categories after training on data of seen categories. The key is to build the connection between visual and semantic space from seen to unseen classes. Previous…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Yujie Zhou , Wenwen Qiang , Anyi Rao , Ning Lin , Bing Su , Jiaqi Wang

Zero-shot domain adaptation (ZSDA) is a category of domain adaptation problems where neither data sample nor label is available for parameter learning in the target domain. With the hypothesis that the shift between a given pair of domains…

Computer Vision and Pattern Recognition · Computer Science 2020-09-14 Jinghua Wang , Jianmin Jiang

Zero-shot learning (ZSL) aims to recognize unseen classes by generalizing the relation between visual features and semantic attributes learned from the seen classes. A recent paradigm called transductive zero-shot learning further leverages…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Zhengbo Wang , Jian Liang , Zilei Wang , Tieniu Tan

Few-shot video action recognition is an effective approach to recognizing new categories with only a few labeled examples, thereby reducing the challenges associated with collecting and annotating large-scale video datasets. Existing…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Sarinda Samarasinghe , Mamshad Nayeem Rizve , Navid Kardan , Mubarak Shah

This paper proposes a novel Zero-Shot Action Recognition~(ZSAR) method based on contrastive learning. In ZSAR, we aim to classify examples from classes that were missing during training. Two well-known problems remain in ZSAR: the semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Valter Estevam , Rayson Laroca , Helio Pedrini , David Menotti

Accurate indoor crowd counting (ICC) is a key enabler to many smart home/office applications. In this paper, we propose a Domain-Agnostic and Sample-Efficient wireless indoor crowd Counting (DASECount) framework that suffices to attain…

Signal Processing · Electrical Eng. & Systems 2022-11-21 Huawei Hou , Suzhi Bi , Lili Zheng , Xiaohui Lin , Yuan Wu , Zhi Quan

Sensor-based human activity recognition (HAR) has been an active research area, owing to its applications in smart environments, assisted living, fitness, healthcare, etc. Recently, deep learning based end-to-end training has resulted in…

Machine Learning · Computer Science 2024-01-19 Sourish Gunesh Dhekane , Thomas Ploetz

Few-shot learning aims to generalize to novel classes with only a few samples with class labels. Research in few-shot learning has borrowed techniques from transfer learning, metric learning, meta-learning, and Bayesian methods. These…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Jaya Krishna Mandivarapu , Eric bunch , Glenn fung

Action recognition in surveillance video makes our life safer by detecting the criminal events or predicting violent emergencies. However, efficient action recognition is not free of difficulty. First, there are so many action classes in…

Computer Vision and Pattern Recognition · Computer Science 2017-10-23 Kun Liu , Wu Liu , Huadong Ma , Wenbing Huang , Xiongxiong Dong

Zero-shot learning (ZSL) can be defined by correctly solving a task where no training data is available, based on previous acquired knowledge from different, but related tasks. So far, this area has mostly drawn the attention from computer…

Computer Vision and Pattern Recognition · Computer Science 2018-10-25 Joao Reis , Gil Gonçalves

Generalising deep networks to novel domains without manual labels is challenging to deep learning. This problem is intrinsically difficult due to unpredictable changing nature of imagery data distributions in novel domains. Pre-learned…

Computer Vision and Pattern Recognition · Computer Science 2020-06-09 Jiabo Huang , Shaogang Gong

Human Activity Recognition (HAR) aims to recognize activities by training models on massive sensor data. In real-world deployment, a crucial aspect of HAR that has been largely overlooked is that the test sets may have different…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Di Xiong , Shuoyuan Wang , Lei Zhang , Wenbo Huang , Chaolei Han

How can we reuse existing knowledge, in the form of available datasets, when solving a new and apparently unrelated target task from a set of unlabeled data? In this work we make a first contribution to answer this question in the context…

Computer Vision and Pattern Recognition · Computer Science 2015-10-07 Efstratios Gavves , Thomas Mensink , Tatiana Tommasi , Cees G. M. Snoek , Tinne Tuytelaars

Modern visual systems have a wide range of potential applications in vision tasks for natural science research, such as aiding in species discovery, monitoring animals in the wild, and so on. However, real-world vision tasks may experience…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Kai Yi , Paul Janson , Wenxuan Zhang , Mohamed Elhoseiny

Object recognition systems usually require fully complete manually labeled training data to train the classifier. In this paper, we study the problem of object recognition where the training samples are missing during the classifier…

Computer Vision and Pattern Recognition · Computer Science 2014-10-15 Wai Lam Hoo , Chee Seng Chan