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Most existing methods that cope with noisy labels usually assume that the class distributions are well balanced, which has insufficient capacity to deal with the practical scenarios where training samples have imbalanced distributions. To…

Computer Vision and Pattern Recognition · Computer Science 2022-09-27 Chaowei Fang , Lechao Cheng , Huiyan Qi , Dingwen Zhang

Relying on crowdsourced workers, data crowdsourcing platforms are able to efficiently provide vast amounts of labeled data. Due to the variability in the annotation quality of crowd workers, modern techniques resort to redundant annotations…

Human-Computer Interaction · Computer Science 2023-11-28 Haoyu Liu , Fei Wang , Minmin Lin , Runze Wu , Renyu Zhu , Shiwei Zhao , Kai Wang , Tangjie Lv , Changjie Fan

Inferring the correct answers to binary tasks based on multiple noisy answers in an unsupervised manner has emerged as the canonical question for micro-task crowdsourcing or more generally aggregating opinions. In graphon estimation, one is…

Machine Learning · Statistics 2019-07-29 Devavrat Shah , Christina Lee Yu

Over the last few years, deep learning has revolutionized the field of machine learning by dramatically improving the state-of-the-art in various domains. However, as the size of supervised artificial neural networks grows, typically so…

Machine Learning · Statistics 2017-12-27 Filipe Rodrigues , Francisco Pereira

Our goal is to deploy a high-accuracy system starting with zero training examples. We consider an "on-the-job" setting, where as inputs arrive, we use real-time crowdsourcing to resolve uncertainty where needed and output our prediction…

Artificial Intelligence · Computer Science 2015-12-09 Keenon Werling , Arun Chaganty , Percy Liang , Chris Manning

Modern, state-of-the-art deep learning approaches yield human like performance in numerous object detection and classification tasks. The foundation for their success is the availability of training datasets of substantially high quantity,…

We consider the problem of accurately estimating the reliability of workers based on noisy labels they provide, which is a fundamental question in crowdsourcing. We propose a novel lower bound on the minimax estimation error which applies…

Machine Learning · Statistics 2017-10-26 Thomas Bonald , Richard Combes

One of the fundamental problems in crowdsourcing is the trade-off between the number of the workers needed for high-accuracy aggregation and the budget to pay. For saving budget, it is important to ensure high quality of the crowd-sourced…

Artificial Intelligence · Computer Science 2020-07-07 Yao-Xiang Ding , Zhi-Hua Zhou

Current methods for sequence tagging, a core task in NLP, are data hungry, which motivates the use of crowdsourcing as a cheap way to obtain labelled data. However, annotators are often unreliable and current aggregation methods cannot…

Computation and Language · Computer Science 2019-09-09 Edwin Simpson , Iryna Gurevych

Crowdsourcing has emerged as a popular approach for collecting annotated data to train supervised machine learning models. However, annotator bias can lead to defective annotations. Though there are a few works investigating individual…

Human-Computer Interaction · Computer Science 2021-10-18 Haochen Liu , Joseph Thekinen , Sinem Mollaoglu , Da Tang , Ji Yang , Youlong Cheng , Hui Liu , Jiliang Tang

Crowd-labeling emerged from the need to label large-scale and complex data, a tedious, expensive, and time-consuming task. One of the main challenges in the crowd-labeling task is to control for or determine in advance the proportion of…

Human-Computer Interaction · Computer Science 2016-07-11 Faiza Khan Khattak , Ansaf Salleb-Aouissi

Crowdsourcing is a valuable approach for tracking objects in videos in a more scalable manner than possible with domain experts. However, existing frameworks do not produce high quality results with non-expert crowdworkers, especially for…

Computer Vision and Pattern Recognition · Computer Science 2020-10-01 Samreen Anjum , Chi Lin , Danna Gurari

While crowdsourcing has emerged as a practical solution for labeling large datasets, it presents a significant challenge in learning accurate models due to noisy labels from annotators with varying levels of expertise. Existing methods…

Machine Learning · Computer Science 2024-11-27 Hui Guo , Grace Y. Yi , Boyu Wang

In this paper, we focus on exploiting the group structure for large-dimensional factor models, which captures the homogeneous effects of common factors on individuals within the same group. In view of the fact that datasets in…

Methodology · Statistics 2024-05-14 Yong He , Xiaoyang Ma , Xingheng Wang , Yalin Wang

Crowdsourcing offers a practical method for ranking and scoring large amounts of items. To investigate the algorithms and incentives that can be used in crowdsourcing quality evaluations, we built CrowdGrader, a tool that lets students…

Social and Information Networks · Computer Science 2013-08-27 Luca de Alfaro , Michael Shavlovsky

Multi-label active learning is a hot topic in reducing the label cost by optimally choosing the most valuable instance to query its label from an oracle. In this paper, we consider the poolbased multi-label active learning under the…

Machine Learning · Computer Science 2015-08-05 Shao-Yuan Li , Yuan Jiang , Zhi-Hua Zhou

We consider a crowdsourcing platform where workers' responses to questions posed by a crowdsourcer are used to determine the hidden state of a multi-class labeling problem. As workers may be unreliable, we propose to perform sequential…

Human-Computer Interaction · Computer Science 2018-05-22 Qiyu Kang , Wee Peng Tay

Digital crowdsourcing (CS) is a modern approach to perform certain large projects using small contributions of a large crowd. In CS, a taskmaster typically breaks down the project into small batches of tasks and assigns them to so-called…

Machine Learning · Computer Science 2016-08-29 Farshad Lahouti , Babak Hassibi

We study crowdsourced PAC learning of threshold functions, where the labels are gathered from a pool of annotators some of whom may behave adversarially. This is yet a challenging problem and until recently has computationally and query…

Machine Learning · Computer Science 2022-12-07 Shiwei Zeng , Jie Shen

Language models such as Bidirectional Encoder Representations from Transformers (BERT) have been very effective in various Natural Language Processing (NLP) and text mining tasks including text classification. However, some tasks still pose…

Computation and Language · Computer Science 2024-01-09 Abdullah Alsuhaibani , Hamad Zogan , Imran Razzak , Shoaib Jameel , Guandong Xu