In contrast, our work focuses on the problem of having multiple identifiers for the same database object, which is an emerging issue among semantic web data providers.
If a mapping results in multiple identifiers, for instance, when mapping from gene to protein identifiers, all combinations of identifiers are used.
Linkage would also reduce the chances of multiple identifiers leading to an overestimate of prevalence, particularly for Indigenous Territorians.
Match rates are thus difficult to quantify, although the use of multiple identifiers should improve linkage quality.
Sample treatment in many different locations needs stringent modeling of multiple identifiers that are associated with the sample and its metadata, leading to the need for mapping or conversion steps.
Manual annotation of such a large number of metabolites, with multiple identifiers each, is extremely laborious.
This causes a decrease in the number of clusters containing multiple identifiers, as detailed above.
It can be seen that, in general, the greatest drops in numbers of clusters with multiple identifiers occurred for identifiers which are recognised to change little, such as forename (in contrast to surname, which changes on marriage), For NHS number, and less in poor quality identifiers (such as hospital number, which is often not unique in our hospital).
Briefly, 50 ng of genomic DNA was used in a two-step multiplex reaction to firstly amplify BRCA1 and BRCA2 coding regions followed by the incorporation of molecular barcodes (multiple identifiers, MIDs) and 454 adapters to each amplicon.
