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Crowdsourcing is a mechanism by means of which groups of people are able to execute a task by sharing ideas, efforts and resources. Thanks to the online technologies, crowdsourcing has become in the last decade an even more utilized process…

Physics and Society · Physics 2022-03-16 Daniele Vilone

Crowdsourcing platforms use various truth discovery algorithms to aggregate annotations from multiple labelers. In an online setting, however, the main challenge is to decide whether to ask for more annotations for each item to efficiently…

Human-Computer Interaction · Computer Science 2024-01-30 Reshef Meir , Viet-An Nguyen , Xu Chen , Jagdish Ramakrishnan , Udi Weinsberg

Major advancements in computer vision can primarily be attributed to the use of labeled datasets. However, acquiring labels for datasets often results in errors which can harm model performance. Recent works have proposed methods to…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Maya Srikanth , Jeremy Irvin , Brian Wesley Hill , Felipe Godoy , Ishan Sabane , Andrew Y. Ng

Despite its successes in various machine learning and data science tasks, crowdsourcing can be susceptible to attacks from dedicated adversaries. This work investigates the effects of adversaries on crowdsourced classification, under the…

Machine Learning · Computer Science 2021-10-11 Panagiotis A. Traganitis , Georgios B. Giannakis

Distant supervision is a popular method for performing relation extraction from text that is known to produce noisy labels. Most progress in relation extraction and classification has been made with crowdsourced corrections to…

Computation and Language · Computer Science 2022-09-21 Anca Dumitrache , Lora Aroyo , Chris Welty

Microtask crowdsourcing has enabled dataset advances in social science and machine learning, but existing crowdsourcing schemes are too expensive to scale up with the expanding volume of data. To scale and widen the applicability of…

Human-Computer Interaction · Computer Science 2016-02-16 Ranjay Krishna , Kenji Hata , Stephanie Chen , Joshua Kravitz , David A. Shamma , Li Fei-Fei , Michael S. Bernstein

The Expectation Maximization (EM) algorithm is widely used as an iterative modification to maximum likelihood estimation when the data is incomplete. We focus on a semi-supervised case to learn the model from labeled and unlabeled samples.…

Machine Learning · Computer Science 2023-01-26 Erixhen Sula , Lizhong Zheng

Employing multiple workers to label data for machine learning models has become increasingly important in recent years with greater demand to collect huge volumes of labelled data to train complex models while mitigating the risk of…

Artificial Intelligence · Computer Science 2021-02-18 Robert McCluskey , Amir Enshaei , Bashar Awwad Shiekh Hasan

Reliably labelling data typically requires annotations from multiple human workers. However, humans are far from being perfect. Hence, it is a common practice to aggregate labels gathered from multiple annotators to make a more confident…

The success of deep learning requires high-quality annotated and massive data. However, the size and the quality of a dataset are usually a trade-off in practice, as data collection and cleaning are expensive and time-consuming. In…

Computation and Language · Computer Science 2023-06-16 Ruibin Yuan , Hanzhi Yin , Yi Wang , Yifan He , Yushi Ye , Lei Zhang , Zhizheng Wu

We consider the problem of reconstructing a rank-one matrix from a revealed subset of its entries when some of the revealed entries are corrupted with perturbations that are unknown and can be arbitrarily large. It is not known which…

Machine Learning · Computer Science 2020-10-26 Qianqian Ma , Alex Olshevsky

Labeling data via rules-of-thumb and minimal label supervision is central to Weak Supervision, a paradigm subsuming subareas of machine learning such as crowdsourced learning and semi-supervised ensemble learning. By using this labeled data…

Machine Learning · Computer Science 2024-05-28 Steven An , Sanjoy Dasgupta

Density estimation is one of the most widely used methods for crowd counting in which a deep learning model learns from head-annotated crowd images to estimate crowd density in unseen images. Typically, the learning performance of the model…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Muhammad Asif Khan , Hamid Menouar , Ridha Hamila

HCI increasingly employs Machine Learning and Image Recognition, in particular for visual analysis of user interfaces (UIs). A popular way for obtaining human-labeled training data is Crowdsourcing, typically using the quality control…

Human-Computer Interaction · Computer Science 2020-12-29 Maxim Bakaev , Sebastian Heil , Martin Gaedke

Clustering is a pivotal challenge in unsupervised machine learning and is often investigated through the lens of mixture models. The optimal error rate for recovering cluster labels in Gaussian and sub-Gaussian mixture models involves ad…

Statistics Theory · Mathematics 2024-07-18 Maximilien Dreveton , Alperen Gözeten , Matthias Grossglauser , Patrick Thiran

Samples with ground truth labels may not always be available in numerous domains. While learning from crowdsourcing labels has been explored, existing models can still fail in the presence of sparse, unreliable, or diverging annotations.…

Machine Learning · Computer Science 2021-12-07 Mani Sotoodeh , Li Xiong , Joyce C. Ho

This paper is concerned with distributed stochastic multi-agent constrained optimization problem over time-varying network with a class of communication noise. This paper considers the problem in composite optimization setting which is more…

Optimization and Control · Mathematics 2022-12-20 Zhan Yu , Daniel W. C. Ho , Deming Yuan , Jie Liu

Downsampling images and labels, often necessitated by limited resources or to expedite network training, leads to the loss of small objects and thin boundaries. This undermines the segmentation network's capacity to interpret images…

Image and Video Processing · Electrical Eng. & Systems 2024-10-27 Shahzad Ali , Yu Rim Lee , Soo Young Park , Won Young Tak , Soon Ki Jung

In recent years, dataset distillation has provided a reliable solution for data compression, where models trained on the resulting smaller synthetic datasets achieve performance comparable to those trained on the original datasets. To…

Learning representation has been proven to be helpful in numerous machine learning tasks. The success of the majority of existing representation learning approaches often requires a large amount of consistent and noise-free labels. However,…

Human-Computer Interaction · Computer Science 2019-08-02 Guowei Xu , Wenbiao Ding , Jiliang Tang , Songfan Yang , Gale Yan Huang , Zitao Liu