3. Dublin Core Report

Prepared for the International Music Metadata Project Working Group
Submitted by Lois Schultz
June 6, 2001

Sites investigated:

General information about Dublin Core

The Dublin Core Metadata Initiative (DCMI) is an organization dedicated to promoting the widespread adoption of interoperable metadata standards and developing specialized metadata vocabularies for describing resources that enable more intelligent information discovery systems. DCMI Working Groups are organized around specific problem domains and are formed and dissolved as dictated by the work at hand and the availability of expertise to accomplish such work. Current special insterest groups are:Business, Collaboratory, Moving Pictures, Multiple Languages. The Moving Pictures Interest Group (http://dublincore.org/groups/moving-pictures/) doesn't specifically include music as a separate topic, but their charter is broad enough encompass music if they find it desirable. The first task of the group is to collect examples of how individuals and organizations are handling metadata and moving images. They include links to other groups that might provide additional information (e.g., MPEG-7 and multimedia)

Background documentation:

Dublin Core Metadata Element Set reference description:
http://dublincore.org/documents/1998/09/dces/#
Dublin Core Metadata Initiative: http://dublincore.org/
The Dublin Core Metadata Initiative(DCMI) is an organization dedicated to promoting the widespread adoption of interoperable metadata standards and developing specialized metadata vocabularies for describing resources that enable more intelligent information discovery systems. There are working groups within the initiative that are organized around specific problem domains.
Guidance on expressing the Dublin Core within the Resource Description Framework (RDF) edited by Eric Miller, Paul Miller, and Dan Brickley
http://www.ukoln.ac.uk/metadata/resources/dc/datamodel/WD-dc-rdf/
Issues in Crosswalking : Content Metadata Standards by Margaret St. Pierre, William P. LaPlant, Jr. Released: October 15, 1998
http://www.niso.org/crsswalk.html
Open Archives Initiative:
http://www.openarchives.org/
The open protocol mandates a common metadata format, Dublin Core.

Site Reports

Duke World Wide Web (DW3) Classical Music Resources

http://www.lib.duke.edu/music/resources/classical_index.html

I. Project description: A comprehensive collection of classical music resources on the Web with links to more than 2,600 non-commercial pages/sites in over a dozen languages. The site is comprised of 133 subject-specific pages and features a powerful, easy-to-use internal search engine; multiple access points for hundreds of entries, including "see" and "see also" references; numerous links, in the form of "canned" subject and author searches, to the Duke online catalog; and composer-specific pages and links organized by historical period for enhanced browsing.

Bibliographic documentation:

The pages consist of html. The Dublin core metadata is used to create an entry in the Duke University Library site index and to allow external search engines more specific information.

Database structure: None
Metadata (used to create the site index)
DC.Title
DC.Creator"
DC.Subject" scheme="LCSH" content
DC.Subject" scheme="DDC"
DC.Publisher
DC.Date
DC.Type"
DC.Format
DC.Identifier" scheme="URL"
DC.Language
DC.Coverage
DC.Coverage
META NAME="robots" content="index, follow"
META NAME="Author"
META NAME="description"
META NAME="keywords

Administrative: text
Structural: html
Level of detail: brief description

II. Background documentation: The project is a series of web pages.

III. Information retrieval

Client-server architecture: Yes
Supports Boolean searching: Yes
Supports browsing: Yes
IV. Accessibility/display:
SGML/XML compliant: Yes
SGML browser (e.g., Dynaweb/Panorama): Yes
HTML display : Yes
Sound files: None
Image files: None

Sixteenth-Century Printed Tablatures for the Lute, Guitar, and Vihuela, compiled by Gary R. Boye
http://www.library.appstate.edu/music/lute/

I. Project description.  This site is a mixture of Dublin Core, used only to provide metadata for the project as a whole and a database (Texis). It was formerly part of the site index at Duke University Library. The database contains information about printed tablatures for plucked-string instruments from 1500-1599. It is primarily concerned with bibliographical information relating to lute, vihuela, and guitar tablatures.

Bibliographic documentation: Description and thematic index of each work described.
Database structure: Hierarchical (Texis)


Metadata (for the web pages):
DC.Title
DC.Creator
DC.Subject scheme="LCSH"
DC.Subject scheme="DDC"
DC.Description
Keywords
DC.Publisher
DC.Type
DC.Format
DC.Identifier
DC.Coverage
DC.Rights

Administrative: text
Level of detail: item level

II. Background documentation: None

III. Information retrieval

Client-server architecture: No
Supports Boolean searching: No
Supports browsing: Yes (chronology, composer, publisher/printer)

IV. Accessibility/display:

SGML/XML compliant: Yes
SGML browser (e.g., Dynaweb/Panorama): Yes
HTML display : Yes
Sound files: None
Image files: None
Other: tablature

MusicBrainz Metadata Initiative
http://musicbrainz.org/MM/

I. Project Description.  MusicBrainz is the second generation incarnation of the CD Index. This server is designed to enable Audio CD and MP3/Vorbis players to download metadata about the music they are playing. All of the data collected on this server is made available to the public.

The MusicBrainz Metadata initiative is designed to create a portable and flexible means of storing and exchanging metadata related to digital audio and video tracks. It is a content description model for audio and video tracks on the Internet. The MM Initiative uses RDF/XMLto facilitate the exchange of audio/video related metadata and uses an RDF namespace that should be used in conjunction with the Dublin Core metadata recommendation.

The specification is used by the MusicBrainz.org metadata server to communicate metadata queries. All the data returned from the server is in the MM/Dublin Core RDF format. Furthermore, this format will hopefully be used by the Open Source audio code Vorbis to store audio/video metadata with the audio/video tracks.

Bibliographic documentation: There are six attributes common to all elements and there are standard lists that define custom qualifiers, extending the base set of qualifiers defined in the Dublin Core Qualifiers recommendation.

Metadata: Dublin Core RDF/XML
Elements: Comment, Lyrics, SyncEvents, Sync Text, Signature, Link, PurchaseInfo, Genre, and TrackNum
Administrative: text indexing, audio/video files
Structural: database
Level of detail: audio/video track level

II. Background documentation:

MusicBrainz Metadata Initiative: http://musicbrainz.org/MM/
Dublin Core qualifiers: http://dublincore.org/documents/2000/07/11/dcmes-qualifiers/

III. Information retrieval

Client-server architecture: Yes
Supports Boolean searching: Yes
Supports browsing: Yes

IV. Accessibility/display:

SGML/XML compliant: Yes
SGML browser: Yes
HTML display : Yes
Sound files: Yes
Image files: Yes

Minnesota Public Radio Digital Audio Archive
http://www.openarchive.org/spec/
Example: http://www.openarchive.org/meta/aphc.html

I. Project Description: The MPR Archive will be an on-line archive system that provides users inside and outside of the St. Paul headquarters with desktop access to text and audio produced by MPR. Users will access this information via an audio workstation and/or standard desktop computers using a Web browser. They expect to have the site available to MPR staff in Jan., 2002.

Bibliographic documentation: http://www.openarchive.org/spec/#_Toc504971027
Database structure: Hierarchical
Metadata: Dublin Core
Title (series, program)
Creator (person, organization, event, organization, name, affiliation, role)
Description (abstract, table of contents)
Publisher (person, organization, event)
Contributor (person, organization, event)
Subject (IPTC subjects and codes)
Date (created, broadcast)
Type (text, sound, image)
Format (medium, extent, audio bit depth, audio resolution, audio channel configuration)
Identifier (URN, DOI, PURL)
Source
Language
Relation (version, part of...)
Coverage (spatial - Getty TGN, temporal - DCMI period)
Rights
Item location
Program number
Program format
Keywords
Performance date
Performance location
Archive history
Revormatting documentation
Data pertaining to the indexing record
Administrative: scanned images, text indexing
Level of detail: item level

II. Background documentation:

http://www.openarchive.org/spec/
Example: http://www.openarchive.org/meta/aphc.html

III. Information retrieval

Client-server architecture: Yes
Supports Boolean searching: Yes
Supports browsing: Yes

IV. Accessibility/display:

SGML/XML compliant: Yes
SGML browser (e.g., Dynaweb/Panorama): Yes
HTML display : Yes
Sound files: None
Image files: None

Historic American Sheet Music Project
http://scriptorium.lib.duke.edu/sheetmusic/

I. Project Description: This project is more thoroughly described as part of the EAD and also the American Memory reports. It is included here because Dublic Core metadata was used to provide more sophisticated access to the general web pages and to create the site index for the Duke University Library web site.

Metadata: Dublin Core elements

DC.Title
DC.Creator
DC.Subject scheme="LCSH"
DC.Description
DC.Publisher
DC.Date
DC.Type
DC.Format
DC.Identifier
DC.Language
DC.Coverage
DC.Coverage
DC.Rights

Administrative: scanned images, text indexing
Level of detail: web page level for the Dublin Core

II. Background documentation:

The web pages provide historical information about sheet music and enables searching of the EAD database

III. Information retrieval

Client-server architecture: Yes
Supports Boolean searching: Yes
Supports browsing: Yes

IV. Accessibility/display:

SGML/XML compliant: Yes
SGML browser (e.g., Dynaweb/Panorama): Yes
HTML display : Yes
Sound files: No
Image files: Yes