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Vehicular mobile crowd sensing is a fast-emerging paradigm to collect data about the environment by mounting sensors on vehicles such as taxis. An important problem in vehicular crowd sensing is to design payment mechanisms to incentivize…

Computer Science and Game Theory · Computer Science 2018-09-17 Susu Xu , Weiguang Mao , Yue Cao , Hae Young Noh , Nihar B. Shah

Hybrid human/computer systems promise to greatly expand the usefulness of query processing by incorporating the crowd for data gathering and other tasks. Such systems raise many database system implementation questions. Perhaps most…

Databases · Computer Science 2012-02-13 Beth Trushkowsky , Tim Kraska , Michael J. Franklin , Purnamrita Sarkar

Applications extracting data from crowdsourcing platforms must deal with the uncertainty of crowd answers in two different ways: first, by deriving estimates of the correct value from the answers; second, by choosing crowd questions whose…

Databases · Computer Science 2016-07-19 Antoine Amarilli , Yael Amsterdamer , Tova Milo

Crowd counting in still images is a challenging problem in practice due to huge crowd-density variations, large perspective changes, severe occlusion, and variable lighting conditions. The state-of-the-art patch rescaling module (PRM) based…

Computer Vision and Pattern Recognition · Computer Science 2020-10-06 Usman Sajid , Wenchi Ma , Guanghui Wang

Evidence shows that in a significant number of cases the current methods of research do not allow for reproducible and falsifiable procedures of scientific investigation. As a consequence, the majority of critical decisions at all levels,…

Computational Finance · Quantitative Finance 2018-09-20 Jorge Faleiro

Understanding the dynamics of pedestrian crowds is an outstanding challenge crucial for designing efficient urban infrastructure and ensuring safe crowd management. To this end, both small-scale laboratory and large-scale real-world…

Physics and Society · Physics 2025-11-18 Koen Minartz , Fleur Hendriks , Simon Martinus Koop , Alessandro Corbetta , Vlado Menkovski

Inferring cluster structure in microarray datasets is a fundamental task for the -omic sciences. A fundamental question in Statistics, Data Analysis and Classification, is the prediction of the number of clusters in a dataset, usually…

Data Structures and Algorithms · Computer Science 2011-02-16 Filippo Utro

In the midst of widespread misinformation and disinformation through social media and the proliferation of AI-generated texts, it has become increasingly difficult for people to validate and trust information they encounter. Many…

Computation and Language · Computer Science 2024-09-24 Preetam Prabhu Srikar Dammu , Himanshu Naidu , Mouly Dewan , YoungMin Kim , Tanya Roosta , Aman Chadha , Chirag Shah

We present a methodology for model evaluation and selection where the sampling mechanism violates the i.i.d. assumption. Our methodology involves a formulation of the bias between the standard Cross-Validation (CV) estimator and the mean…

Methodology · Statistics 2025-03-14 Oren Yuval , Saharon Rosset

Many data mining tasks cannot be completely addressed by auto- mated processes, such as sentiment analysis and image classification. Crowdsourcing is an effective way to harness the human cognitive ability to process these machine-hard…

Databases · Computer Science 2018-10-22 Chengliang Chai , Ju Fan , Guoliang Li , Jiannan Wang , Yudian Zheng

In machine learning, "ground truth" refers to the assumed correct labels used to train and evaluate models. However, the foundational "ground truth" paradigm rests on a positivistic fallacy that treats human disagreement as technical noise…

Artificial Intelligence · Computer Science 2026-04-28 Sheza Munir , Benjamin Mah , Krisha Kalsi , Shivani Kapania , Julian Posada , Edith Law , Ding Wang , Syed Ishtiaque Ahmed

Crowdsourcing utilizes the wisdom of crowds for collective classification via information (e.g., labels of an item) provided by labelers. Current crowdsourcing algorithms are mainly unsupervised methods that are unaware of the quality of…

Social and Information Networks · Computer Science 2016-11-15 Pin-Yu Chen , Chia-Wei Lien , Fu-Jen Chu , Pai-Shun Ting , Shin-Ming Cheng

With the advent of seamless connection of human, machine, and smart things, there is an emerging trend to leverage the power of crowds (e.g., citizens, mobile devices, and smart things) to monitor what is happening in a city, understand how…

Human-Computer Interaction · Computer Science 2018-05-23 Jiangtao Wang , Yasha Wang , Daqing Zhang , Qin Lv , Chao Chen

The concept of social trust has attracted an attention of information processors/data scientists and information consumers / business firms. One of the main reasons for acquiring the value of SBD is to provide frameworks and methodologies…

Social and Information Networks · Computer Science 2021-04-20 Bilal Abu-Salih , Pornpit Wongthongtham , Dengya Zhu , Kit Yan Chan , Amit Rudra

Eliciting labels from crowds is a potential way to obtain large labeled data. Despite a variety of methods developed for learning from crowds, a key challenge remains unsolved: \emph{learning from crowds without knowing the information…

Machine Learning · Computer Science 2019-06-04 Peng Cao , Yilun Xu , Yuqing Kong , Yizhou Wang

Mobile Crowdsourcing (MCS) is the generalized act of outsourcing sensing tasks, traditionally performed by employees or contractors, to a large group of smart-phone users by means of an open call. With the increasing complexity of the…

Computers and Society · Computer Science 2020-04-30 Aymen Hamrouni , Hakim Ghazzai , Turki Alelyani , Yehia Massoud

Crowdsourcing information constitutes an important aspect of human-in-the-loop learning for researchers across multiple disciplines such as AI, HCI, and social science. While using crowdsourced data for subjective tasks is not new,…

Human-Computer Interaction · Computer Science 2019-06-19 Ramya Srinivasan , Ajay Chander

While many statistical models and methods are now available for network analysis, resampling network data remains a challenging problem. Cross-validation is a useful general tool for model selection and parameter tuning, but is not directly…

Methodology · Statistics 2020-05-04 Tianxi Li , Elizaveta Levina , Ji Zhu

The mainstream crowd counting methods usually utilize the convolution neural network (CNN) to regress a density map, requiring point-level annotations. However, annotating each person with a point is an expensive and laborious process.…

Computer Vision and Pattern Recognition · Computer Science 2022-09-09 Dingkang Liang , Xiwu Chen , Wei Xu , Yu Zhou , Xiang Bai

Online discussion threads are important means for individual decision-making and for aggregating collective judgments, e.g. the `wisdom of crowds'. Empirical investigations of the wisdom of crowds are currently ambivalent about the role…

Social and Information Networks · Computer Science 2021-03-15 Robin Engelhardt , Vincent F. Hendricks , Jacob Stærk-Østergaard
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