PMC:7796058 / 76175-76369 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T589","span":{"begin":0,"end":194},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Precision Precision=1n ∑j|Rj ∩Mj ||Rj| (3) This is defined as the ratio of the total number of items appearing in both Rj and Mj to the total number of Rj [66]. n is the total number of users."}