Fig. 4From: Using NLP in openEHR archetypes retrieval to promote interoperability: a feasibility study in ChinaThe illustration of synonym-expansion based on the Word2Vec. At train stage, Wikidata in Chinese is used to learn the representation vector of words, and then use the cosine distance to calculate the similarity between userās term with all terms in vocabulary, after ranking, return top 10 terms as the expansion of userās termBack to article page