PMC:7116472 / 12044-12133 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T80","span":{"begin":0,"end":89},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"An 80%/20% random split of the derivation dataset was used to define train and test sets."}