Why to attribute DOIs to research data ?

A DOI is attributed to a dataset to address several objectives:

Rationalize Data citation: if a resource editor changes, the URL of the landing page of the DOI will be updated. The bibliographic citation of the DOI remains valid.

Simplify data access: the landing page of a DOI attributed by Seanoe offers a direct access to data through an HTTP/FTP link. As the data associated to a publication is publicly available, a reader can check the publication against the DOI data, increasing the publication credibility.

Provide traceability on data usage: the publications that cite a data set with a DOI are easy to track in bibliographic surveys. A comprehensive bibliographic survey will increase the notability of the scientist or infrastructure that published the data set with a DOI.