A centre of expertise in digital information management

UKOLN is supported by:

NISO MI TG2: Collection DescriptionStatus Report

NISO MI Meeting, Research Triangle Park, NC, USA

Wednesday 23 March 2005 – Thursday 24 March 2005

Pete Johnston

Research Officer, UKOLN

www.bath.ac.uk

                                                             

A centre of expertise in digital information management

Collections and Services

• Collection– An aggregation of one or more items

• Service– The provision of, or system of supplying, one or more

functions of interest to an end-user or software application.

– Physical or digital– Digital services may be "structured" or "unstructured"

• Informational services– Services that provide access to (the items within) a

collection

http://www.ukoln.ac.uk/metadata/dcmi/collection-model/http://www.ukoln.ac.uk/metadata/dcmi/collection-model/

                                                             

A centre of expertise in digital information management

Relations between Collections and Services• Relationships exist

– Between collections and (informational) services– Between collections

• In NISO MI conceptual model– A collection is-made-available-by zero or more

services– A service makes-available exactly one

collection– A collection is-part-of zero or more (super-)

collections (parent)– A collection has-parts zero or more (sub-)

collections (child)

Collection

Collection

is-Part-Of

Collection

is-Part-Of

Service

is-Made-Available-By

Serviceis-Made-

Available-By

Serviceis-Made-

Available-By

Collection

is-Part-Of

Collection

is-Part-OfService

is-Made-Available-By

                                                             

A centre of expertise in digital information management

Functional Requirements

• Allow an agent to– Discover collections of potential interest– Identify a collection– Select one or more collections from amongst a

number of discovered collections– Identify the informational services that provide

access to the collection

– Select a service with which to interact– Interact with service

• Subject to "knowledge" of interface semantics

Collectiondescription

Servicedescription

                                                             

A centre of expertise in digital information management

Collection Description

• TG2 decision to build on Dublin Core Collection Description Application Profile (DC CD AP)– Activity of DCMI Collection Description WG

• A "core" set of collection description properties– For simple collection-level descriptions – Suitable for a broad range of collections– Primarily to support discovery of collections

• Building on RSLP data model & schema– examine collection attributes (only) of RSLP CD Schema

as starting point– excludes Location, Service, Agent description

http://www.ukoln.ac.uk/metadata/dcmi/collection-ap-summary/http://www.ukoln.ac.uk/metadata/dcmi/collection-ap-summary/

Item

Collection

is-gathered-into

m

n

Location

is-located-in

m

n

Service

is-Made-Available-By

m

1

mprovides

n

administers

n

mAgent

collects

m

n

owns

m

n

CollectionDescription

is-described-by1 m

                                                             

A centre of expertise in digital information management

DC CD AP: Progress Report

• Data model– extend Heaney E-R model to cover Service

• Specify collection attributes– starting from RSLP CD Schema– but excludes Location, Service, Agent description

• Specify terms (properties/classes) required– conform to DCMI Abstract Model– references some existing terms, requires some new terms

• Assign URIs for new properties/classes– proposals to DCMI Usage Board– non-DCMI naming authority for some new terms?

• Define bindings– use DCMI recommendations

                                                             

A centre of expertise in digital information management

NISO MI CD Schema & DC CD AP

• DC CD AP still work in progress– data model: (Location/Service)– Abstract Model: one-to-one rule– Some proposed terms still to be assigned URIs

• Scope and specificity of DC CD AP v NISO MI CD Schema– NISO MI addressing (primarily) library service providers– Some library-specific requirements

• e.g. completeness of collection

– NISO MI CD Schema as superset of DC CD AP– NISO MI CD as second (similar) DCAP

http://www.ukoln.ac.uk/metadata/nisomi/cd-schema/http://www.ukoln.ac.uk/metadata/nisomi/cd-schema/

                                                             

A centre of expertise in digital information management

UKOLN is supported by:

NISO MI TG2: Collection DescriptionStatus Report

NISO MI Meeting, Research Triangle Park, NC, USA

Wednesday 23 March 2005 – Thursday 24 March 2005

Pete Johnston

Research Officer, UKOLN

www.bath.ac.uk