@文章{信息:doi/10.2196/13767，作者="朱小宝史静陆翠媛"，标题="基于共识导向区块链技术的云健康资源共享:乳腺癌诊断服务的案例研究"，期刊="J医学互联网研究"，年="2019"，月="7月"，日="23"，卷="21"，号="7"，页数="e13767"，关键词="区块链;云健康;乳腺肿瘤诊断;k-最近邻(KNN);授权证明(PoA);背景:近年来，研究人员在推进区块链技术方面做出了重大努力。该技术具有明显的去中心化和安全性特点，可应用于许多领域。在卫生数据和资源共享领域，区块链技术的应用也正在出现。目的:在本研究中，我们提出了一种基于共识导向区块链技术的云健康资源共享模型，并开展了乳腺肿瘤诊断的模拟研究。方法:提出的平台建立在一个联盟或联邦区块链上，具有集中和去中心化的特点。 The consensus mechanisms generate operating standards for the proposed model. Open source Ethereum code is employed to provide the blockchain environment. Proof of Authority is selected as the consensus algorithm of block generation. Results: Based on the proposed model, a simulation case study for breast tumor classification is constructed. The simulation includes 9893 service requests from 100 users; 22 service providers are equipped with 22 different classification methods. Each request is fulfilled by a service provider recommended by the weighted k-nearest neighbors (KNN) algorithm. The majority of service requests are handled by 9 providers, and provider service evaluation scores tend to stabilize. Also, user priority on KNN weights significantly affects the system operation outcome. Conclusions: The proposed model is feasible based on the simulation case study for the cloud service of breast tumor diagnosis and has the potential to be applied to other applications. ", issn="1438-8871", doi="10.2196/13767", url="//www.mybigtv.com/2019/7/e13767/", url="https://doi.org/10.2196/13767", url="http://www.ncbi.nlm.nih.gov/pubmed/31339106" }