Fig. 3From: Colil: a database and search service for citation contexts in the life sciences domainProcess of building the Colil database. The full-text papers of PMC-OAS were obtained from PMC (1). Citations and citation contexts were identified from the papers (2), and co-citations were counted from citations (3). A newly compiled vocabulary called COLILO was developed (4), and the Colil database was built by using COLILO, citations, citation contexts, and co-citations (5)Back to article page