[Purpose/Significance] In order to provide scientific evidence recommendation to policy making, a knowledge graph-based research framework for scientific evidence recommendation in evidence-based policy is proposed, and a scientific evidence recommendation study is conducted using the policies fighting on COVID-19 as an example.[Method/Process] This paper proposed an effective research framework for scientific evidence recommendation in evidence-based policies, which mainly included two parts:evidence-based policy and scientific evidence knowledge graph construction, and scientific evidence recommendation in evidence-based policies. Meanwhile, taking the policies fighting on COVID-19 as an example, an evidence-based policy and scientific evidence knowledge graph containing 12,872,567 entities, 47 relationships and 61,548,684 triads was constructed. And it further used the inference ability of knowledge graph to provide scientific evidence recommendations for the policy formulation on fighting COVID-19.[Result/Conclusion] The result shows that the method has good recommendation accuracy, especially the HITS@10 of 0.182 588 in the TransE model, can effectively solve the problem of scientific evidence recommendation in the formulation of policies on fighting COVID-19, and provide a new scheme for evidence-based policy-making during the COVID-19 pandemic.
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