A novel framework of collaborative early warning for COVID-19 based on blockchain and smart contracts

【Author】 Ouyang, Liwei; Yuan, Yong; Cao, Yumeng; Wang, Fei-Yue

【Source】INFORMATION SCIENCES

【影响因子】8.233

【Abstract】Early warning is a vital component of emergency response systems for infectious diseases. However, most early warning systems are centralized and isolated, thus there are potential risks of single evidence bias and decision-making errors. In this paper, we tackle this issue via proposing a novel framework of collaborative early warning for COVID-19 based on blockchain and smart contracts, aiming to crowdsource early warning tasks to distributed channels including medical institutions, social organizations, and even individuals. Our framework supports two surveillance modes, namely, medical federation surveillance based on federated learning and social collaboration surveillance based on the learning markets approach, and fuses their monitoring results on emerging cases to alert. By using our framework, medical institutions are expected to obtain better federated surveillance models with privacy protection, and social participants without mutual trusts can also share verified surveillance resources such as data and models, and fuse their surveillance solutions. We implemented our proposed framework based on the Ethereum and IPFS plat-forms. Experimental results show that our framework has advantages of decentralized decision-making, fairness, auditability, and universality. It also has potential guidance and reference value for the early warning and prevention of unknown infectious diseases. (c) 2021 Elsevier Inc. All rights reserved.

【Keywords】Blockchain; Smart contracts; Federated learning; Learning markets; Collaborative early warning

【发表时间】2021 SEP

【收录时间】2022-01-02

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