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Active learning is a paradigm aimed at reducing the annotation effort by training the model on actively selected informative and/or representative samples. Another paradigm to reduce the annotation effort is self-training that learns from a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Javad Zolfaghari Bengar , Joost van de Weijer , Bartlomiej Twardowski , Bogdan Raducanu

Accurate surgical phase recognition is crucial for computer-assisted interventions and surgical video analysis. Annotating long surgical videos is labor-intensive, driving research toward leveraging unlabeled data for strong performance…

Labeled data used for training activity recognition classifiers are usually limited in terms of size and diversity. Thus, the learned model may not generalize well when used in real-world use cases. Semi-supervised learning augments labeled…

Machine Learning · Computer Science 2018-01-25 Ming Zeng , Tong Yu , Xiao Wang , Le T. Nguyen , Ole J. Mengshoel , Ian Lane

We propose the application of a semi-supervised learning method to improve the performance of acoustic modelling for automatic speech recognition based on deep neural net- works. As opposed to unsupervised initialisation followed by…

Machine Learning · Statistics 2016-10-04 Akash Kumar Dhaka , Giampiero Salvi

This paper investigates the problem of image classification with limited or no annotations, but abundant unlabeled data. The setting exists in many tasks such as semi-supervised image classification, image clustering, and image retrieval.…

Computer Vision and Pattern Recognition · Computer Science 2016-02-05 Dengxin Dai , Luc Van Gool

Semi-supervised learning provides a solution to reduce the dependency of machine learning on labeled data. As one of the efficient semi-supervised techniques, self-training (ST) has received increasing attention. Several advancements have…

Machine Learning · Computer Science 2024-04-22 Jifeng Guo , Zhulin Liu , Tong Zhang , C. L. Philip Chen

Current deep learning paradigms largely benefit from the tremendous amount of annotated data. However, the quality of the annotations often varies among labelers. Multi-observer studies have been conducted to study these annotation…

Computer Vision and Pattern Recognition · Computer Science 2020-10-05 Xiaosong Wang , Ziyue Xu , Dong Yang , Leo Tam , Holger Roth , Daguang Xu

Deep learning-based video salient object detection has recently achieved great success with its performance significantly outperforming any other unsupervised methods. However, existing data-driven approaches heavily rely on a large…

Computer Vision and Pattern Recognition · Computer Science 2019-12-02 Pengxiang Yan , Guanbin Li , Yuan Xie , Zhen Li , Chuan Wang , Tianshui Chen , Liang Lin

In semi-supervised representation learning frameworks, when the number of labelled data is very scarce, the quality and representativeness of these samples become increasingly important. Existing literature on semi-supervised learning…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Shuvendu Roy , Ali Etemad

Most previous scene text spotting methods rely on high-quality manual annotations to achieve promising performance. To reduce their expensive costs, we study semi-supervised text spotting (SSTS) to exploit useful information from unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Dongliang Luo , Hanshen Zhu , Ziyang Zhang , Dingkang Liang , Xudong Xie , Yuliang Liu , Xiang Bai

Multi-task learning is central to many real-world applications. Unfortunately, obtaining labelled data for all tasks is time-consuming, challenging, and expensive. Active Learning (AL) can be used to reduce this burden. Existing techniques…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Nikita Durasov , Nik Dorndorf , Pascal Fua

The real challenge in pattern recognition task and machine learning process is to train a discriminator using labeled data and use it to distinguish between future data as accurate as possible. However, most of the problems in the real…

Machine Learning · Computer Science 2012-08-08 Shafigh Parsazad , Ehsan Saboori , Amin Allahyar

In temporal action segmentation, Timestamp supervision requires only a handful of labelled frames per video sequence. For unlabelled frames, previous works rely on assigning hard labels, and performance rapidly collapses under subtle…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Rahul Rahaman , Dipika Singhania , Alexandre Thiery , Angela Yao

Annotating multi-class instances is a crucial task in the field of machine learning. Unfortunately, identifying the correct class label from a long sequence of candidate labels is time-consuming and laborious. To alleviate this problem, we…

Machine Learning · Computer Science 2025-12-05 Meng Wei , Zhongnian Li , Yong Zhou , Qiaoyu Guo , Xinzheng Xu

Background: The quantitative analysis of microscope videos often requires instance segmentation and tracking of cellular and subcellular objects. The traditional method consists of two stages: (1) performing instance object segmentation of…

Image and Video Processing · Electrical Eng. & Systems 2021-05-25 Quan Liu , Isabella M. Gaeta , Mengyang Zhao , Ruining Deng , Aadarsh Jha , Bryan A. Millis , Anita Mahadevan-Jansen , Matthew J. Tyska , Yuankai Huo

3D object detection is an important task in computer vision. Most existing methods require a large number of high-quality 3D annotations, which are expensive to collect. Especially for outdoor scenes, the problem becomes more severe due to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Hongyi Xu , Fengqi Liu , Qianyu Zhou , Jinkun Hao , Zhijie Cao , Zhengyang Feng , Lizhuang Ma

Since the preparation of labeled data for training semantic segmentation networks of point clouds is a time-consuming process, weakly supervised approaches have been introduced to learn from only a small fraction of data. These methods are…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Gengxin Liu , Oliver van Kaick , Hui Huang , Ruizhen Hu

Recent temporal action segmentation approaches need frame annotations during training to be effective. These annotations are very expensive and time-consuming to obtain. This limits their performances when only limited annotated data is…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Sovan Biswas , Anthony Rhodes , Ramesh Manuvinakurike , Giuseppe Raffa , Richard Beckwith

Semi- and weakly-supervised learning have recently attracted considerable attention in the object detection literature since they can alleviate the cost of annotation needed to successfully train deep learning models. State-of-art…

Computer Vision and Pattern Recognition · Computer Science 2022-06-20 Akhil Meethal , Marco Pedersoli , Zhongwen Zhu , Francisco Perdigon Romero , Eric Granger

We consider statistical inference under a semi-supervised setting where we have access to both a labeled dataset consisting of pairs $\{X_i, Y_i \}_{i=1}^n$ and an unlabeled dataset $\{ X_i \}_{i=n+1}^{n+N}$. We ask the question: under what…

Statistics Theory · Mathematics 2025-03-20 Zichun Xu , Daniela Witten , Ali Shojaie
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