RESEARCH LIBRARY Content Packaging for Complex Objects MPEG – 21 1 February 2007 Frances Knudson Repository Team Los Alamos National Laboratory Research Library LA-UR

RESEARCH LIBRARY MPEG 21 ISO/IEC TR MPEG-21 is modular Part 1: Vision, Technologies and Strategy Part 2: DID – Digital Item Declaration Part 3: DII – Digital Item Identification Part 4: IPMP – Intellectual Property Management and Protection Part 5: REL – Rights Expression Part 6: RDD – Rights Data Dictionary Part 7: DIA – Digital Item Adaptation Part 8: MPEG-21 Reference Software Part 9: MPEG-21 File Format Part 10: DIP – Digital Item Processing Part 11: Persistent Association Technology Part 12: Test Bed for MPEG-21 Resource Delivery Part 13: Empty Part 14: Conformance Part 15: Event Reporting Part 16: BF – Binary Format Part 17: Fragment Identification of MPEG Resources Part 18: Digital Item Streaming

RESEARCH LIBRARY Core concepts - Digital Item & User Digital Item – a structured digital object with a standard representation, identification and metadata within the MPEG-21 framework User – any entity that interacts with or makes use of the Digital Items

RESEARCH LIBRARY MPEG-21 Digital Item Declaration & Digital Item Declaration Language Abstract model – MPEG-21 DID Representation of the model in XML – MPEG-21 DIDL W3C XML schema of MPEG-21 DIDL Digital Item Digital Item Declaration DIDL document has declaration has XML serialization MPEG-21 Abstract Model MPEG-21 DIDL has XML serialization Based on

RESEARCH LIBRARY Digital Object TypeMIMEIdentifier Digital Objectscholarly paperN/ADOI Constituent datastream 1metadata recordtext/xmlPMID Constituent datastream 2 (inline) fulltext fileapplication/pdf– Constituent datastream 3 (http access) fulltext fileapplication/pdf–

RESEARCH LIBRARY MPEG-21 DID Abstract Data Model: basic entities resource component descriptor/statement item container resource: datastream component: binding of descriptor/statements to datastreams item: represents a Digital Item. Descriptor/statement constructs convey information about the Digital Item container: grouping of items and/or containers and descriptor/statement constructs pertaining to the container container

RESEARCH LIBRARY DIDL – DIDL Document ID Item - identifier - PMID Component Descriptor – PubMed record Resource - XML Item - identifier - DOI Component Descriptor – scholarly paper Resource - PDF Resource HTTP Container DII

RESEARCH LIBRARY DIDL – DIDL Document ID Item - DII - PMID Component - DII Descriptor – PubMed record Resource - XML Item - DII – DOI Component - DII Descriptor – scholarly paper Resource - PDF Resource - HTTP Container Digital object Package

RESEARCH LIBRARY Descriptor/Statement Extensible mechanism to convey secondary information. Statement is a literal textual value that contains information but not an asset. MPEG 21 presents a formal usage in several of the parts Identification information – MPEG-21 Part 3 : DII Rights information – MPEG-21 Part 5 : REL Processing information – MPEG-21 Part 10 : DIP User environment information – MPEG-21 Part 7 : DIA

RESEARCH LIBRARY Descriptor/Statement Examples This digital object represents a scholarly paper. <dii:Identifier xmlns:dii="urn:mpeg:mpeg21:2002:01-DII-NS" xmlns:xsi=" xsi:schemaLocation="urn:mpeg:mpeg21:2002:01-DII-NS 21_schema_files/dii.xsd/dii.xsd">info:pmid/

RESEARCH LIBRARY Descriptor/Statement Example T07:45:27-06: T08:32:23-06: PDF 1.4 Well-Formed and valid ………….

RESEARCH LIBRARY DII - Digital Item Identifier – MPEG 21 Pt. 3 Framework for identifying any entity regardless of its nature type or granularity dii:Identifier Contained within the descriptor/statement entity

RESEARCH LIBRARY And there is much more! MPEG-21 Flexible Extensible Community profiles LANL has processed 8 datasets (80 million records) Uptake has increased – aDORe Archive, Fedora (plug-in), DSpace (plug- in), Portico, DARE (Dutch library), PANIC Commercial ventures – enkios

RESEARCH LIBRARY Thank you Questions Acknowledgements Thanks to the Repository Team – Esha Datta, Beth Goldsmith, Irma Holtkamp, Laura Robinson and Valerie Trujillo Thanks to Herbert Van de Sompel and LANL Research Library Digital Library Research & Prototyping Team for the use of their slides