- From: Phil Archer <phila@w3.org>
- Date: Wed, 30 Dec 2015 18:31:16 +0000
- To: Manolis Koubarakis <koubarak@di.uoa.gr>, "'public-sdw-comments@w3.org'" <public-sdw-comments@w3.org>, Annette Greiner <amgreiner@lbl.gov>, Eric Stephan <ericphb@gmail.com>, "Tandy, Jeremy" <jeremy.tandy@metoffice.gov.uk>, public-dwbp-comments@w3.org
At various times in recent months I have promised to look into the topic of persistent identifiers for subsets of data. This came up at the SDW F2F in Sapporo but has also been raised by Annette in DWBP. In between festive activities I've been giving this some thought and have tried to begin to commit some ideas to a page [1]. During the CEO-LD meeting, Jeremy pointed to OpenSearch as a possible way forward, including its geo-temporal extensions defined by the OGC. There is also the Linked Data API as a means of doing this, and what they both have in common is that they offer an intermediate layer that turns a URL into a query. How do you define a persistent identifier for a subset of a dataset? IMO you mint a URI and say "this identifies a subset of a dataset" - and then provide a means of programmatically going from the URI to a query that returns the subset. As long as you can replace the intermediate layer with another one that also returns the same subset, we're done. The UK Government Linked Data examples tend to be along the lines of: http://transport.data.gov.uk/id/stations returns a list of all stations in Britain. http://transport.data.gov.uk/id/stations/Manchester returns a list of stations in Manchester http://transport.data.gov.uk/id/stations/Manchester/Piccadilly identifies Manchester Piccadilly station. All of that data of course comes from a single dataset. Does this work in the real worlds of meteorology and UBL/PNNL? Phil. [1] https://github.com/w3c/sdw/blob/gh-pages/subsetting/index.md -- Phil Archer W3C Data Activity Lead http://www.w3.org/2013/data/ http://philarcher.org +44 (0)7887 767755 @philarcher1
Received on Wednesday, 30 December 2015 18:30:46 UTC