Abstract
With the rapid growth of the linked data on the Web, the quality assessment of the RDF data set becomes particularly important, especially for the quality and accessibility of the linked data. In most cases, RDF data sets are shared online, leading to a high maintenance cost for the quality assessment. This also potentially pollutes Internet data. Recently blockchain technology has shown the potential in many applications. Using the blockchain storage quality assessment results can reduce the centralization of the authority, and the quality assessment results have characteristics such as non-tampering. To this end, we propose an RDF data quality assessment model in a decentralized environment, pointing out a new dimension of RDF data quality. We use the blockchain to record the data quality assessment results and design a detailed update strategy for the quality assessment results. We have implemented a system DCQA to test and verify the feasibility of the quality assessment model. The proposed method can provide users with better cost-effective results when knowledge is independently protected.
Highlights
The current decentralized system has shown explosive growth
This paper proposed a method on assessing and updating the quality of Resource Description Framework (RDF) data in the context of the rapid developing Web and decentralized systems
It indicates the significance of this research and the importance of achieving RDF data quality assessment in a decentralized system
Summary
The current decentralized system has shown explosive growth. A decentralized network structure is a network structure that grants permissions to member nodes without a central authority. Compared with the centralized structure, the decentralized structure reduces the dependence on the central node and enhances the security and robustness of the entire structure. Decentralized phenomenon-level products such as Bitcoin [1] proposed by Satoshi Nakamoto, and the blockchain technology [2] used by it are a decentralized ledger. The blockchain technology is gradually separated from Bitcoin. The blockchain is widely used in many fields [3], and has been proven to perform well in the fields of finance, supply chain and insurance
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