DCMI Usage Board, DC-2009, Seoul, Korea Pete Johnston, Eduserv pete. johnston@eduserv. org. uk http: //www. eduserv. org. uk/research/ 16 October 2009 Miscellaneous Usage Issues
Simple DC DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 2
Simple DC • Described informally in various DCMI documents • From viewpoint of DCAM/Singapore Framework • Either – A “pattern” for constructing description sets – i. e. a Description Set Profile • Or – A DC Application Profile, which includes a DSP DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 3
Simple DC as DSP: Suggestion 1 • DSP expression of “traditional” “Simple DC” pattern • Description set contains one description, of resource of any type • For each statement in description – Property URI must be from list of 15 properties of DCMES (i. e http: //purl. org/dc/elements/1. 1/title etc) – Literal value surrogate required • SES URI not permitted • Language tag optional DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 4
Simple DC as DSP: Suggestion 2 • Singapore 2007 Proposal (Mikael/Tom) • DSP expression of a “modernised” “Simple DC” pattern • Description set contains one description, of resource of any type • For each statement in description – Property URI must be from list of 15 “new” properties of DC Terms (i. e http: //purl. org/dc/terms/title etc) – Type of surrogate on case by case basis, depending on range – For literal value surrogates • SES URI not permitted • Language tag optional – For non-literal value surrogates • Value URI not permitted • VES URI not permitted • One value string permitted – SES URI not permitted – Language tag optional DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 5
Issues • Are we labelling a DCAP or a DSP? • Both “patterns” are “valid” DSPs • What do we want to achieve? – To formalise the “traditional” pattern? – To develop a “modernised” pattern (based on new terms, ranges etc)? – Both? • Which do we want to label “Simple DC”? • And if we do both, what do we label the other pattern? DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 6
Issues • “Dumb-down”? – Generation of “Simple DC” description set? • If “Simple DC” = “traditional” pattern – Does “dumb-down” imply mapping non-literal to literal? • If “Simple DC” = “modern” pattern – Non-literal supported in target so no need for mapping DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 7
Dumb-down to “traditional” Simple DC “ 5 mins” dcterms: extent Doc: D dc: format Doc: D DCMI Usage Board, DC-2009, Seoul, Korea “ 5 mins” 16 October 2009 8
Dumb-down to “modern” Simple DC “ 5 mins” dcterms: extent Doc: D “ 5 mins” dc: format Doc: D DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 9
Discussion • “Simple DC” as “traditional” pattern – Dovetails with existing informal documentation – “Intuitive” fit with e. g. oai_dc XML format – Ignores modernisation of terms • Continues to promote “blanket” usage of literal values – “Dumb-down” complexity? • “Simple DC” as “modernised” pattern – Recognises modernisation of terms • Promotes appropriate usage of literal/non-literal values – “Dumb-down” simpler? – Differs from existing informal documentation – Less “intuitive” fit with e. g. oai_dc XML format DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 10
Use of dcterms: identifier DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 11
Use of dcterms: identifier • Use literal values – e. g. URI as literal value, not “value URI” DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 12
Use of dcterms: identifier • Within a single description, use dcterms: identifier only for identifiers of the described resource • Take care with resource/representation & resource/description (http. Range-14) issues DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 13
Use of dcterms: identifier • Differentiating “identifier syntaxes” – Where represented as URI • use SES = dcterms: URI (or xsd: any. URI) • Don’t use SES = example: URN, example: UUID (etc) as these are all URIs – Where represented as non-URI literal • use SES? – SES = example: ASIN (etc) • (but e. g. BIBO uses subproperties) DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 14
Use of dcterms: identifier • Differentiating “categories/purposes of identifier” – Subproperties for e. g. • “local identifier”? DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 15
Miscellaneous Usage Issues Title slide photo “Seoul Gyeongbok Palace” by Flickr user storyvillegirl See http: //www. flickr. com/photos/bibbit/2948779230/ Made available under CC Attribution-Share-Alike 2. 0 license DCMI Usage Board, DC-2009, Seoul, Korea 16 October 2009 16
DC-2009, Seoul, Korea Pete Johnston, Eduserv pete. johnston@eduserv. org. uk http: //www. eduserv. org. uk/research/ 16 October 2009 Dublin Core Description Set Profiles
Скачать презентацию DCMI Usage Board DC-2009 Seoul Korea Pete Johnston
b6e62a8608ec612db4981fe6c1a70b2a.ppt