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Search by Keyword or Phrase

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You can search all investigations, studies, and assays in the CSSI DCC Portal by terms found in related ontologies. The two ontologies available for searching are the Ontology for Biomedical Investigations

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and the NCI Thesaurus (NCIt). A search looks for matches between the term(s) you enter and synonyms and subclasses found in the ontology/ies you select. The matched synonyms and subclasses of the keyword you entered in the ontology(ies) you selected and matches them to investigations, studies, and assays in the CSSI DCC Portal. The matching ontological terms can exist in file columns, field definitions, and placeholders of the investigations, studies, or assays.

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  1. From the CSSI Data Portal home page, click the Search button or select Investigations > Search.
    Search button

    The Search Investigations page appears.
    Search Investigations
  2. In the Search box, enter a keyword or phrase. Search results appear immediately, using the default context of Investigations.
  3. To change the context, from the Search for list, select Studies or Assays.
  4. Under Search for related terms, select Ontology for Biomedical Investigations, NCI Thesaurus, or both. By default, both are selected but if you change the selection, the search results refresh.
  5. Under Include, select either Synonyms Only or Synonyms and Subclasses.
    • Synonyms include terms in an ontology that are closely related to the keyword or phrase you entered.
    • Subclasses are lower categories associated with the ontology term.

    If any ontological synonyms or subclasses of the keyword you selected exist in the CSSI DCC Portal, those terms appear in the Synonyms or Subclasses box, respectively.

    In the following example, the keyword is neoplasm and its synonym found in one or both of the selected ontologies is tumor. Subclasses of tumor that appear in the search results are all, cc, hcc, r1, and r2.
    Search Investigations page showing neoplasm as the keyword and tumor as the synonym, along with several subclassesImage Added
    To expand your ontological search to include , click the click here link. This shows all related synonyms and subclasses, even if they do not all appear in the search results.
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    To expand your ontological search, click the click here link. This shows all related synonyms and subclasses in the boxes below. Terms that have search results have a dark outline and terms that do not have search results but still exist in the ontology/ies have a dotted outline.

    In the following example, the keyword is genome and its synonym found in one of the two selected ontologies is genomic. The dark

    outline

    around the matching terms means that the term appears in the metadata of the investigation, study, or assay

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    Search Investigations page showing genome as the keyword and genome and genomic as the synonymImage Removed

  6. Click any investigation name, study name, or assay filename to explore the data further.

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