OpenKG Chain: A Blockchain Infrastructure for Open Knowledge Graphs

Abstract

The early concept of knowledge graph originates from the idea of the Semantic Web, which aims at using structured graphs to model the knowledge of the world and record the relationships that exist between things. Currently publishing knowledge bases as open data on the Web has gained significant attention. In China, CIPS(Chinese Information Processing Society) launched the OpenKG in 2015 to foster the development of Chinese Open Knowledge Graphs. Unlike existing open knowledge-based programs, OpenKG chain is envisioned as a blockchain-based open knowledge infrastructure. This article introduces the first attempt at the implementation of sharing knowledge graphs on OpenKG chain, a blockchain-based trust network. We have completed the test of the underlying blockchain platform, as well as the on-chain test of OpenKG's dataset and toolset sharing as well as fine-grained knowledge crowdsourcing at the triple level. We have also proposed novel definitions: K-Point and OpenKG Token, which can be considered as a measurement of knowledge value and user value. 1033 knowledge contributors have been involved in two months of testing on the blockchain, and the cumulative number of on-chain recordings triggered by real knowledge consumers has reached 550,000 with an average daily peak value of more than 10,000. For the first time, We have tested and realized on-chain sharing of knowledge at entity/triple granularity level. At present, all operations on the datasets and toolset in OpenKG.CN, as well as the triplets in OpenBase, are recorded on the chain, and corresponding value will also be generated and assigned in a trusted mode. Via this effort, OpenKG chain looks to provide a more credible and traceable knowledge-sharing platform for the knowledge graph community.

Research on ontology construction for system-of-systems architecture design

“…OpenKG [14] , an open resource-sharing platform for knowledge graphs, includes a collection of 275 open-source projects that contribute to knowledge graph construction. Drawing inspiration from relevant content in these projects, valuable insights can be gained for the construction of an ontology library.…”

PrivyKG: Security and Privacy Preservation of Knowledge Graphs Using BlockChain Technology

“…The former can be used to enhance the querying and reasoning capabilities of the BlockChain where the latter is used mostly to keep the knowledge graphs privacy, trust and security by making it protected and decentralized. The merging of these two technologies has been supported in recent years due to their success in many domains like data sharing [10] and recommendation systems [11].…”

Effective and Efficient Community Search with Graph Embeddings

“…Graph is a prevalent model to represent entities (i.e., nodes) and their relationships (i.e., edges) in many of today's real-world information networks [56,16,47,34,7], e.g., social networks, collaboration networks, and criminal networks. For example, authors in a collaboration network are represented as nodes and the co-authorship between authors is indicated by an edge.…”