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Table 2 Examples of data discovery and datametrics using metadata

From: Standards-based curation of a decade-old digital repository dataset of molecular information

Entry URL Purpose of search
1 http://search.datacite.org/api?&q=prefix:10.14469&alternateIdentifier:NCI\:*&fl=doi,title,relatedIdentifier&wt=xml&rows=3 Returns the first three entries for which any NCI descriptor is specified, restricted to the Imperial College prefix, containing values for the title, doi and RelatedIdentifier and expressed in XML syntax
2 http://search.datacite.org/ui?&q=alternateIdentifier:smiles\:*.*+alternateIdentifier:NCI\:* This returns all entries for which both a SMILES and NCI molecular descriptor is specified and which contains a period in the SMILES string
3 http://search.datacite.org/ui?q=ORCID:0000-0002-8635-8390+publicationYear:[2014+TO+2014] This returns the metadata about the ORCID associated with the creator of a data set, along with a specified period for its creation
4 http://search.datacite.org/ui?q=ORCID:*+prefix:10.14469 A variation of the preceding example, illustrating all entries at Imperial College that have an associated ORCID for their creator
5 http://search.datacite.org/ui?q=ORCID:*+doi:10.14469\/CH\/* A second variation of the preceding example, illustrating all entries at Imperial College that have an associated ORCID for their creator and a DOI assigned to the Chemistry department
6 http://search.datacite.org/ui?q=has_media:true&fq=prefix:10.14469 Searches for any entry associated with a declared media type. The prefix is that registered by Imperial College London; the media type found for this prefix is chemical/x-cml
7 http://search.datacite.org/ui?q=InChIKey=LQPOSWKBQVCBKS-PGMHMLKASA-N A search using a specified value for the InChI chemical identifier associated with the dataset. Our repository was constructed along the lines that each deposition describes a single molecular collection, where a single InChI descriptor relates to the important molecular entity in that collection
8 http://search.datacite.org/ui?q=alternateIdentifier:InChIKey\:* A variation on the preceding specific search, where all entries containing an InChIKey are returned
9 http://stats.datacite.org/?fq=datacentre_facet%3A%22BL.IMPERIAL+-+Imperial+College+London%22&fq=allocator_facet%3A%22BL+-+The+British+Library%22&q=#tab-resolution-report This provides a URL resolution report for all DOIs associated with the Imperial College London prefix
10 http://stats.datacite.org/?fq=datacentre_facet%3A%22BL.IMPERIAL+-+Imperial+College+London%22&q=#tab-prefixes This returns the number of datasets associated with Imperial College as a whole