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Truth Discovery in Crowdsourced Detection of Spatial Events

Robin Wentao Ouyang, Mani Srivastava, Alice Toniolo, Timothy J. Norman
2014 Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management - CIKM '14  
The ubiquity of smartphones has led to the emergence of mobile crowdsourcing tasks such as the detection of spatial events when smartphone users move around in their daily lives.  ...  Experimental results demonstrate that our proposed method outperforms existing state-of-the-art truth discovery approaches in the mobile crowdsourcing environment.  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views or represent the official policies of the NSF, the  ... 
doi:10.1145/2661829.2662003 dblp:conf/cikm/OuyangSTN14 fatcat:2no5ecbr3ffm5bd5cltc3liqla

Truth Discovery in Crowdsourced Detection of Spatial Events

Robin Wentao Ouyang, Mani Srivastava, Alice Toniolo, Timothy J. Norman
2016 IEEE Transactions on Knowledge and Data Engineering  
The ubiquity of smartphones has led to the emergence of mobile crowdsourcing tasks such as the detection of spatial events when smartphone users move around in their daily lives.  ...  Experimental results demonstrate that our proposed method outperforms existing state-of-the-art truth discovery approaches in the mobile crowdsourcing environment.  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views or represent the official policies of the NSF, the  ... 
doi:10.1109/tkde.2015.2504928 fatcat:pm5woujgbfhzbdtulvhx7owcvq

Geotagging: Systematic Anatomization and Conceptual Model for POI Verification

2020 VOLUME-8 ISSUE-10, AUGUST 2019, REGULAR ISSUE  
People have been contributing large amount of data every day in Geographical Information Portal however to harness the real power of this tremendous amount of data, it must be managed efficiently.  ...  Therefore, a framework is required to expedite the tagging and authentication process of the tagged data in an efficient manner to exploit the power of POI data.  ...  Game, SFV, KBP 2013 dataset System learned the question and answer simultaneously and detected true answer Performance and accuracy rate can be improved 10 Truth discovery in crowdsourced  ... 
doi:10.35940/ijitee.k7820.0991120 fatcat:twxah67m2vdldaweyqtrgvnh4a

Selecting Workers Wisely for Crowdsourcing When Copiers and Domain Experts Co-exist

Xiu Fang, Suxin Si, Guohao Sun, Quan Z. Sheng, Wenjun Wu, Kang Wang, Hang Lv
2022 Future Internet  
We designed a crowdsourcing system called SWWC composed of a task assignment stage and a truth discovery stage.  ...  In the truth discovery stage, we computed the estimated truth and worker credibility by an iterative method.  ...  Acknowledgments: We are grateful for the server provided by Donghua University to assist us in running the experiment and obtaining the experimental data and results in a short time.  ... 
doi:10.3390/fi14020037 fatcat:5gtjn3z25fhflbnf4qm2zgp5bu

Parallel and Streaming Truth Discovery in Large-Scale Quantitative Crowdsourcing

Robin Wentao Ouyang, Lance M. Kaplan, Alice Toniolo, Mani Srivastava, Timothy J. Norman
2016 IEEE Transactions on Parallel and Distributed Systems  
They either address truth discovery in categorical crowdsourcing or perform batch processing that does not scale.  ...  In this paper, we propose new parallel and streaming truth discovery algorithms for quantitative crowdsourcing applications.  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views or represent the official policies of the NSF, the  ... 
doi:10.1109/tpds.2016.2515092 fatcat:oyfylm342bbszodpxvb64lrqp4

Incentivizing the Workers for Truth Discovery in Crowdsourcing with Copiers [article]

Lingyun Jiang, Xiaofu Niu, Jia Xu, Dejun Yang, Lijie Xu
2019 arXiv   pre-print
Moreover, our truth discovery method shows prominent advantage in terms of precision when there are copiers in the crowdsourcing systems.  ...  In truth discovery stage, we estimate the truth for each task based on both the dependence and accuracy of workers.  ...  for truth discovery in the crowdsourcing.  ... 
arXiv:1902.03889v1 fatcat:q5fdsxff5fczzjnzx2mycscp2a

A Survey on Truth Discovery [article]

Yaliang Li, Jing Gao, Chuishi Meng, Qi Li, Lu Su, Bo Zhao, Wei Fan, Jiawei Han
2015 arXiv   pre-print
In this survey, we focus on providing a comprehensive overview of truth discovery methods, and summarizing them from different aspects.  ...  We also discuss some future directions of truth discovery research.  ...  information summarization of an evolving event.  ... 
arXiv:1505.02463v2 fatcat:sqvfxldfqjbtlexi5gqaldtgqq

Crowdsourcing What Is Where: Community-Contributed Photos as Volunteered Geographic Information

Shawn Newsam
2010 IEEE Multimedia  
In particular, we argue that georeferenced social media is another form of VGI and, as such, the geographic discovery it enables is in effect crowdsourcing what is where on the earth's surface.  ...  We then spatially aggregate these labels to generate two-class land-cover maps. We applied this approach to a 100 Â 100-km region of the United Kingdom and evaluated it using ground-truth data.  ... 
doi:10.1109/mmul.2010.79 fatcat:vkkyz3woxzhyznfwx3cnwksobi

Quality of Information in Mobile Crowdsensing

Francesco Restuccia, Nirnay Ghosh, Shameek Bhattacharjee, Sajal K. Das, Tommaso Melodia
2017 ACM transactions on sensor networks  
Differently from prior sensing paradigms, humans are now the primary actors of the sensing process, since they become fundamental in retrieving reliable and up-to-date information about the event being  ...  In this paper, we provide a new framework for defining and enforcing the QoI in mobile crowdsensing, and analyze in depth the current state-of-the-art on the topic.  ...  ACKNOWLEDGEMENT We would like to thank the anonymous reviewers for their valuable comments, which helped us improve the quality of the paper.  ... 
doi:10.1145/3139256 fatcat:hgq6lcwmofhy3gpq4auqxuhggu

VIP-Tree

Zhou Shao, Muhammad Aamir Cheema, David Taniar, Hua Lu
2016 Proceedings of the VLDB Endowment  
Yuankai Zhang, Adam O'Neill, Micah Sherr, Wenchao Zhou 1550 Truth Discovery for SpatioTemporal Events from Crowdsourced Data ........................................ ...................................  ...  Junling Liu, Ke Deng, Huanliang Sun, Yu Ge, Xiaofang Zhou, Christian Jensen 529 Truth Inference in Crowdsourcing: Is the Problem Solved?  ... 
doi:10.14778/3025111.3025115 fatcat:2vi4x3dmlvfohndw5iw2xoibnq

ICDE conference 2015 detailed author index

2015 2015 IEEE 31st International Conference on Data Engineering  
1460 Enjoy FRDM -Play with a Schema-Flexible RDBMS [Search] A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Waguih, Dalia Attia 1440 AllegatorTrack: Combining and Reporting Results of Truth Discovery  ...  Shah, Shetal 1468 The XDa-TA System for Automated Grading of SQL Query Assignments Shahabi, Cyrus 1404 PrivGeoCrowd: A Toolbox for Studying Private Spatial Crowdsourcing Shan, Ming-Chien 101 Chronos:  ... 
doi:10.1109/icde.2015.7113260 fatcat:ep7pomkm55f45j33tkpoc5asim

Mapping the Individual Trees in Urban Orchards by Incorporating Volunteered Geographic Information and Very High Resolution Optical Remotely Sensed Data: A Template Matching-Based Approach

Hossein Vahidi, Brian Klinkenberg, Brian Johnson, L. Moskal, Wanglin Yan
2018 Remote Sensing  
A data quality assessment of the proposed approach in the study area demonstrated that the detected trees had a very high degree of completeness (92.7%), a high thematic accuracy (false discovery rate  ...  Overall, the proposed approach based on the crowdsourced training samples generally demonstrated a promising ITC detection performance in our pilot project.  ...  Conflicts of Interest: The authors declare no conflicts of interest.  ... 
doi:10.3390/rs10071134 fatcat:mwh3rhort5cixoqxi2p3j55ram

A Feasibility Study on Crowdsourcing to Monitor Municipal Resources in Smart Cities

Thivya Kandappu, Archan Misra, Desmond Koh, Randy Daratan Tandriansyah, Nikita Jaiman
2018 Companion of the The Web Conference 2018 on The Web Conference 2018 - WWW '18  
In spite of the promise, we believe that the success of such large-scale nation-wide crowdsourcing deployments depend on the real-word user preferences and behavioral characteristics of citizens.  ...  Active citizenry, whereby citizens actively participate in reporting and addressing challenges in urban service delivery is a strategic goal of smart cities such as Singapore.  ...  ACKNOWLEDGEMENT This research is supported by the National Research Foundation, Prime Minister's Office, Singapore under its International Research Centres in Singapore Funding Initiative.  ... 
doi:10.1145/3184558.3191519 dblp:conf/www/KandappuMKTJ18 fatcat:4zylegpgljgtbfrjqpgvrmfqqy

A Survey on Security, Privacy, and Trust in Mobile Crowdsourcing

Wei Feng, Zheng Yan, Hengrun Zhang, Kai Zeng, Yu Xiao, Y. Thomas Hou
2018 IEEE Internet of Things Journal  
With the popularity of sensor-rich mobile devices (e.g., smart phones and wearable devices), mobile crowdsourcing (MCS) has emerged as an effective method for data collection and processing.  ...  This paper provides a survey of these challenges and discusses potential solutions.  ...  ., truth finder for spatial events (TSE) and personalized TSEs].  ... 
doi:10.1109/jiot.2017.2765699 fatcat:eapkruonuzh6hhzppoumnonlhq

Sources of spatial animal and human health data: Casting the net wide to deal more effectively with increasingly complex disease problems

Kim B. Stevens, Dirk U. Pfeiffer
2015 Spatial and Spatio-temporal Epidemiology  
In addition, cartography has moved beyond the realm of professionals to crowdsourced mapping projects that play a crucial role in disease control and surveillance of outbreaks such as the 2014 West Africa  ...  This paper provides a comprehensive review of a range of innovative sources of spatial animal and human health data including data warehouses, mHealth, Google Earth, volunteered geographic information  ...  Cluster detection A clustered spatial arrangement of disease events suggests the presence of a contagious process or localised risk factor.  ... 
doi:10.1016/j.sste.2015.04.003 pmid:26046634 pmcid:PMC7102771 fatcat:6o4by3u67vblnd2khwfe7v2sum
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