Reliable and Streaming Truth Discovery in Blockchain-based Crowdsourcing
Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
Truth discovery is an effective and compelling approach to addressing data conflicts among different workers and offers more trustworthy truths to task requesters in crowdsourcing. Prior research either focused on studying more accurate truth discovery algorithms or aimed to protect data privacy from the centralized and honest-but-curious crowdsourcing platforms. They all overlooked the stronger threats from the malicious crowdsourcing platform (e.g., may return incorrectly estimated truths) and many critical issues inherited from centralization. This paper proposes a blockchain-based decentralized truth discovery scheme for crowdsourcing, with computation integrity guarantees against malicious participants and support for efficient processing of generic streaming data. We adopt the idea of hybrid storage and computations to ease the expensive on-chain cost. Workers are grouped for off-chain partial truth estimation and smart contracts are leveraged for on-chain final truth aggregation. To prevent any improper computations from malicious entities, we record the hashes of data and worker weights on-chain occasionally. Through theoretical analysis and extensive experiments over real-world and synthetic datasets implemented in Ethereum, we demonstrate that our scheme 1) achieves our reliability goals with certain privacy assurance; 2) exhibits a higher truth estimation accuracy than existing approaches and a lower gas consumption than the baseline.
Originalsprog | Engelsk |
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Titel | 2023 20th Annual IEEE International Conference on Sensing, Communication, and Networking, SECON 2023 |
Forlag | IEEE Computer Society Press |
Publikationsdato | 2023 |
Sider | 492-500 |
ISBN (Elektronisk) | 9798350300529 |
DOI | |
Status | Udgivet - 2023 |
Begivenhed | 20th Annual IEEE International Conference on Sensing, Communication, and Networking, SECON 2023 - Madrid, Spanien Varighed: 11 sep. 2023 → 14 sep. 2023 |
Konference
Konference | 20th Annual IEEE International Conference on Sensing, Communication, and Networking, SECON 2023 |
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Land | Spanien |
By | Madrid |
Periode | 11/09/2023 → 14/09/2023 |
Bibliografisk note
Funding Information:
This work was supported in part by the National Key R&D Program of China under Grant 2022YFB2701400, the National Natural Science Foundation of China under Grant 62202167 and 62132005, the Danish Ministry of Education and Science, Digital Pilot Hub and Skylab Digital, and by the MOE International Joint Lab of Trustworthy Software (∗Corresponding authors).
Funding Information:
This work was supported in part by the National Key R&D Program of China under Grant 2022YFB2701400, the National Natural Science Foundation of China under Grant 62202167 and 62132005, the Danish Ministry of Education and Science, Digital Pilot Hub and Skylab Digital, and by the MOE International Joint Lab of Trustworthy Software.
Publisher Copyright:
© 2023 IEEE.
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