Abstract

An abundance of life sciences data sources contain data about scientific entities such as genes and sequences. Scientists are interested in exploring relationships between scientific objects, e.g., between genes and bibliographic citations. A scientist may choose the OMIM source, which contains information related to human genetic diseases, as a starting point for her exploration, and wish to eventually retrieve all related citations from the PUBMED source. Starting with a keyword search on a certain disease, she can explore all possible relationships between genes in OMIM and citations in PUBMED. This corresponds to the following query: "Return all citations of PUBMED that are linked to an OMIM entry that is related to some disease or condition."

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