provenance & context workshop - guiding documents
TRANSCRIPT
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Provenance & Context Workshop - Guiding Documents
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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Outline:
• OAIS Reference Model
• USGCRP Guidance
• PREMIS Metadata Standard
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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The OAIS Reference Model
• A CCSDS and ISO standard detailing: The responsibilities of an archive A functional model describing how to preserve
information and make it available to users An information model describing what ancillary
information is needed to ensure that future users understand and can use the information preserved
A common set of terminology that can be used to describe the above
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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OAIS Archive Responsibilities
• Negotiate with information providers to receive and obtain sufficient rights to appropriate information to ensure long-term preservation
• Designate a community which should be able to understand the information preserved
• Ensure that the information is independently understandable to that community
• Document procedures and policies regarding data preservation and access
• Make the information available
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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OAIS Functional Model
OAIS Archive
Ingest Access
Archive
Data Mgmt
Administration
Producer
Preservation Planning
Consumer
MANAGEMENT
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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OAIS Information Model
ContentInformation
PreservationDescriptionInformation
DescriptiveInformation
About Package 1
Package 1
Packaging Information
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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OAIS Information Model - Content Info.
• Data Object - the information to be preserved
• Representational Information - allows a user to understand the data Structure (e.g., flat binary file, ASCII table,
net-CDF file, HDF, etc.) Content (e.g., a table of station IDs, dates,
latitude, longitude, incidence angle, brightness temperature)
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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OAIS Info. Model - Preservation Description
• Provenance - documents the history of the object
• Reference - documents object identifiers and their generation mechanisms
• Fixity - documents methods used to ensure there are no undocumented changes
• Context - the relationship of the object to its environment
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
QuickTime™ and a decompressor
are needed to see this picture.Presented by R. Duerr at the Summer Institute on Data Curation, June 2-5, 2008
Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign
Provenance and Contextual Information
• Instrument/sensor characteristics including pre-flight or pre-operational performance measurements (e.g., spectral response, noise characteristics, etc.)
• Instrument/sensor calibration data and method• Processing algorithms and their scientific basis,
including complete description of any sampling or mapping algorithm used in creation of the product (e.g., contained in peer-reviewed papers, in some cases supplemented by thematic information introducing the data set or derived product)
• Complete information on any ancillary data or other data sets used in generation or calibration of the data set or derived product
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
QuickTime™ and a decompressor
are needed to see this picture.Presented by R. Duerr at the Summer Institute on Data Curation, June 2-5, 2008
Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign
Provenance and Contextual Information (cont.):
• Processing history including versions of processing source code corresponding to versions of the data set or derived product held in the archive
• Quality assessment information• Validation record, including identification of validation data
sets• In the case of earth based data, station location and any
changes in location, instrumentation, controlling agency, surrounding land use and other factors which could influence the long-term record
• A bibliography of pertinent Technical Notes and articles, including refereed publications reporting on research using the data set
• Information received back from users of the data set or product
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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PREMIS - Where did it come from?
• PREMIS = PREservation Metadata: Implementation Strategies
• Developed by an OCLC and RLG sponsored international working group Representatives from libraries, museums,
archives, government, and the private sector.
• Based on the OAIS reference model
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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PREMIS - What’s its purpose?
• Provide a core preservation metadata set with broad applicability across the digital preservation community Supported by a data dictionary XML schema Examples are provided
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PREMIS - What’s its status?
• Maintained by the Library of Congress• Editorial board with international
membership• User community consulted on changes
through the PREMIS Implementers Group
• Version 1 was released in June 2005• Version 2 was released in March 2008
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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Rights
Events
Agents
“a coherent set of contentthat is reasonablydescribed as a unit”
For example, a web site, data set or collection of data sets
“a coherent set of contentthat is reasonablydescribed as a unit”
For example, a web site, data set or collection of data sets
“a discrete unit of information in digital form”
For example, a data file
“a discrete unit of information in digital form”
For example, a data file“assertions of one or more
rights or permissionspertaining to an object
or an agent”e.g., copywrite notice, legalstatute, deposit agreement
“assertions of one or more rights or permissionspertaining to an object
or an agent”e.g., copywrite notice, legalstatute, deposit agreement
“an action that involves atleast one object or agentknown to the preservation
repository”e.g., created, archived,
migrated
“an action that involves atleast one object or agentknown to the preservation
repository”e.g., created, archived,
migrated
“a person, organization, orsoftware program associatedwith preservation events in
the life of an object”e.g., Dr. Spock donated it
“a person, organization, orsoftware program associatedwith preservation events in
the life of an object”e.g., Dr. Spock donated it
PREMIS - Entity-Relationship Diagram
IntellectualEntities
Objects
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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PREMIS - Types of Objects
• Representation - “the set of files needed for a complete and reasonable rendition of an Intellectual Entity”
• File • Bitstream - “contiguous or non-
contiguous data within a file that has meaningful common properties for preservation purposes”
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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PREMIS - Object Metadata
• objectIdentifier objectIdentifierType objectIdentifierValue
• preservationLevel• objectCategory*• objectCharacteristics
compositionLevel fixity
o messageDigestAlgorithmo messageDigesto messageDigestOriginator
size
formato formatDesignation
formatName formatVersion
o formatRegistry formatRegistryName formatRegistryKey formatRegistryRole
significantProperties* inhibitors
o inhibitorTypeo inhibitorTargeto inhibitorKey
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PREMIS - Object Metadata (continued)
• creatingApplication creatingApplicationName creatingApplicationVersion dateCreatedByApplication CreatingApplicationExtension
• originalName• storage
contentLocationo contentLocationTypeo contentLocationValue
storageMedium
• signatureInformation signatureInformationEncoding signer signatureMethod signatureValue signatureValidationRules signatureProperties keyInformation
• signatureInformationExtension
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Overview of Guiding Documents - R. DuerrESIP Federation Meeting, Santa Barbara, July 2009.
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PREMIS - Object Metadata (continued)
• environment environmentCharacteristic environmentPurpose environmentNote dependency
o dependencyNameo dependencyIdentifier
dependencyIdentifierType dependencyIdentifierValue
softwareo swNameo swVersiono swTypeo swOtherInformationo swDependency
hardwareo hwNameo hwTypeo hwOtherInformation
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PREMIS - Object Metadata (continued)
• relationship relationshipType relationshipSubtype relatedObjectIdentification* relatedEventIdentification*
• linkingEventIdentifier*• linkingIntellectualEntityIdentifier*• linkingRightsStatementIdentifier*
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PREMIS - Object Metadata Notes
• Not all fields are mandatory
• Not all fields apply to all types of objects
• Some fields are repeatable
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PREMIS - Event Metadata
• eventIdentifier eventIdentifierType eventIdentifierValue
• eventType• eventDateTime• eventDetail• eventOutcomeInformation
eventOutcome eventOutcomeDetail
• linkingAgentIdentifier linkingAgentIdentifierType linkingAgentIdentifierValue linkingAgentRole
• linkingObjectIdentifier linkingObjectIdentifierType linkingObjectIdentifierValue linkingObjectIdentifierRole
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PREMIS - Agent Metadata
• agentIdentifier agentIdentifierType agentIdentifierValue
• agentName• agentType
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PREMIS - Rights Metadata
• rightsStatement rightsStatement
Identifiero rightsStatement
IdentifierTypeo rightsStatement
IdentifierValue rightsBasis copyrightInformation* licenseInformation* statuteInformation*
rightsGrantedo acto restrictiono termOfGrant
startDate endDate
o rightsGrantedNote
linkingObjectIdentifier linkingAgentIdentifier
• rightsExtension