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IT Research Challenges in Digital Preservation. Andreas Rauber Department of Software Technology and Interactive Systems Vienna University of Technology http://www.ifs.tuwien.ac.at/~andi. Overview. Why do we need Digital Preservation? Digital Preservation Projects in Europe - PowerPoint PPT Presentation
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IT Research Challenges in Digital Preservation
Andreas RauberDepartment of Software Technology and
Interactive SystemsVienna University of Technologyhttp://www.ifs.tuwien.ac.at/~andi
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Overview
Why do we need Digital Preservation?
Digital Preservation Projects in Europe
IT-oriented Challenges in Digital Preservation
Some Digital Preservation Research at TUWIEN
Conclusions
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Why do we need Digital Preservation?
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Why do we need Digital Preservation?
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Why do we need Digital Preservation?
Digital Objects require specific environment to be accessible :- Files need specific programs- Programs need specific operating systems (-versions)- Operating systems need specific hardware components
SW/HW environment is not stable:- Files cannot be opened anymore- Embedded objects are no longer accessible/linked- Programs won‘t run- Information in digital form is lost
(usually total loss, no degradation) Digital Preservation aims at maintaining digital objects
authentically usable and accessible for long time periods.
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Strategies for Digital Preservation
Strategies (grouped according to Companion Document to UNESCO Charter
http://unesdoc.unesco.org/images/0013/001300/130071e.pdf)
Investment strategies: - Standardization, Data extraction, Encapsulation, Format limitations
Short-term approaches: - Museum, Backwards-compatibility, Version-migration, Reengineering
Medium- / long-term approaches: - Migration, Viewer, Emulation
Alternative approaches: - Non-digital Approaches, Data-Archeology
No single optimal solution for all objects
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Migration
Transformation into different format, continuous or on-demand (Viewer)
+ Wide-spread adoption+ Possibility to compare to un-migrated object+ Immediately accessible- Unintended changes, specifically over sequence of
migrations- Cannot be used for all objects- Requires continuous action to migrate
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Emulation
Emulation of hardware or software (operating system, applications)
+ Concept of emulation widely used+ Numerous emulators are available+ Potentially complete preservation of functionality+ Object is rendered identically- Object is rendered identically- Requires detailed documentation of system- Requires knowledge on how to operate current systems in
the future- Complex technology- Emulators must be emulated or migrated themselves- Emulators potentially erroneous/incomplete
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Digital Preservation
Affects all domains- Cultural heritage- eGovernment- Primary data: Sensor data, experiment data- Industry: production processes, workflows, monitoring- Medical, Insurance/Banking, - Society: photos, communications
Test:- Trying to repeat / verify “old” experiments- Problems with
• Data Management: original test data, parameters, preprocessing,…
• Code: compilability, change of libraries/functionality• interpretability of results, know-how
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Digital Preservation
Is a complex task Requires a concise understanding of the objects, their
intellectual characteristics, the way they were created and used and how they will most likely be used in the future
Requires a continuous commitment to preserve objects to avoid the „digital dark ages“
Requires a solid, trusted infrastructure and workflows to ensure digital objects are not lost
Is essential to maintain electronic publications, research data, … accessible
Will become more complex as digital objects become more complex
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Overview
Why do we need Digital Preservation?
Digital Preservation Projects in Europe
IT-oriented Challenges in Digital Preservation
Some Digital Preservation Research at TUWIEN
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Overview
Digital Preservation Projects in Europelarge number, small selection provided below- DPE: Digital Preservation Europe, EU, FP6- Caspar: Cultural, Artistic and Scientific Knowledge for
Preservation, Access and Retrieval- Planets: Preservation and Long-term Access Networked Services: - Shaman: Sustaining Heritage Access through Multivalent Archiving- LIWA: Living Web Archives- Keep-it: Kultur, eCrystals, EdShare (and NECTAR) - Preserve It
IT-oriented Challenges in Digital Preservation Some Digital Preservation Research at TUWIEN Conclusions
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DPEFP6 Coordinating Action
http://www.digitalpreservationeurope.eu
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Visio
nWhat is DPE?
FP6 Coordinating Action, Digitalpreservationeurope (DPE) intends to create
a coherent platform for proactive cooperation, collaboration, exchange and dissemination of research results and experience in the preservation of digital objects
Digital Preservation: ensuring long-term accessibility of digital objects
Mitigating the risk of a “digital dark age”
http://www.digitalpreservationeurope.eu
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Obje
ctiv
esTwo macro objectives:
1. to foster collaboration and synergies among on-going projects and existing initiatives across the ERA [repositories and audit and certification tools]
2. to raise up awareness on digital preservation challenges among different user communities [different level of awareness on the subject and its strategic significance]
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Activ
ities
DPE Activities
• Range of activities to foster research and take-up in digital preservation
• Research Roadmap
• Digital Preservation Challenge
• Researcher and Practitioner Exchange
• DPE Videos
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Rese
arch
Roa
dmap
Preservation Research Roadmap
The Roadmap aims at contributing to the planning of our future R&D in Digital Preservation by means of different actions:
Analysing the state of the art in Digital Preservation research and already existing research agendas on a global level;
Researching the needs and demands from the point of view of the Digital Preservation user communities and their leading experts;
Researching the needs and demands of future markets for technology and service providers
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Rese
arch
Roa
dmap
DPE Recommended Research
Restauration Conservation Collection and repository management Preservation as risk management Preserving the interpretability and
functionality of digital objects Collection cohesion and interoperability Automation in preservation Preserving the context Storage technologies
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DP C
halle
nge
DPE Challenge
• Promotion of innovation in DP• Targeted at students• Main Goal:
Provide access to and make digital objects useable• Open to participants world-wide• Submission deadline: May 30 2008• http://www.digitalpreservationeurope.eu/challenge• Different tasks, eg.
• Assessment of Submission by an International Panel of Experts in the field
• Access Data in a Legacy Client-Server System• Proprietary File Format• Preservation of Multimedia Art
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DPE
Vide
osRaising Awareness of DP Issues
Experts & Practitioners: Briefing Papers, Seminars
General Public: little awareness, everybody afected
DPE Videos:series of short cartoons highlighting DP issuesaimed at non-expertstrying to communicate challenges in simple styleVideos available on YouTube:http://www.youtube.com/user/wepreserve
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Overview
Digital Preservation Projects in Europelarge number, small selection provided below- DPE: Digital Preservation Europe, EU, FP6- Caspar: Cultural, Artistic and Scientific Knowledge for
Preservation, Access and Retrieval- Planets: Preservation and Long-term Access Networked Services: - Shaman: Sustaining Heritage Access through Multivalent Archiving- LIWA: Living Web Archives- Keep-it: Kultur, eCrystals, EdShare (and NECTAR) - Preserve It
IT-oriented Challenges in Digital Preservation Some Digital Preservation Research at TUWIEN Conclusions
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CASPARhttp://www.casparpreserves.eu
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CASPAR
How can digital data still be used and understood in the future when systems, software, and everyday knowledge continues to change? This is the CASPAR challenge.
The CASPAR project is mainly based on the OAIS standard ISO:14721:2003
Its Architecture is defined for- Managing key concepts of the OAIS reference model- Supporting main functionality identified in the OAIS
functional model CASPAR aims to define and implement interfaces and
functionally independent components
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Users may be unable to understand or use the data e.g. the semantics, format, processes or algorithms involved- How to guarantee digital information may be accessed and
understood in the future?- How to guarantee retrieval of Archival Information?- How to guarantee intelligibility of digital information within
heterogeneous Designated Communities? Non-maintainability of essential hardware, software or
support environment may make the information inaccessible- How to guarantee preservation actors are informed about change
events?- How to guarantee appropriate actions are undertaken to preserve
Archival Information against change events?
Preservation Issue 1
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Preservation Issue 3
The chain of evidence may be lost and there may be lack of certainty of provenance or authenticity- How to guarantee an adequate integrity and identity for any Archival
Information? Access and use restrictions may make it difficult to reuse data,
or alternatively may not be respected in future- How to guarantee an adequate security access with the proper rights
to any resource and functionality within an Archive? The current custodian of the data, whether an organisation or
project, may cease to exist at some point in the future- How to guarantee a proper information package management within
and Archive?- How to guarantee long-time preservation maintenance of any
information package?
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Overview
Digital Preservation Projects in Europelarge number, small selection provided below- DPE: Digital Preservation Europe, EU, FP6- Caspar: Cultural, Artistic and Scientific Knowledge for
Preservation, Access and Retrieval- Planets: Preservation and Long-term Access Networked Services: - Shaman: Sustaining Heritage Access through Multivalent Archiving- LIWA: Living Web Archives- Keep-it: Kultur, eCrystals, EdShare (and NECTAR) - Preserve It
IT-oriented Challenges in Digital Preservation Some Digital Preservation Research at TUWIEN Conclusions
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Planets
http://www.planets-project.eu
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The Planets project
4-year research and technology development project co-funded by the European Union
Addresses core digital preservation challenges Started June 2006 with €15m budget Coordinated by the British Library 16 partners
- national libraries and archives- leading technology companies- research universities
Builds on strong digital archiving and preservation programmes
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Planets partners
The British Library National Library, Netherlands Austrian National Library State and University Library,
Denmark Royal Library, Denmark
National Archives, UK Swiss Federal Archives National Archives, Netherlands
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Planets partners
Tessella Plc IBM Netherlands Microsoft Research Austrian Research
Centers GmbH
Hatii at University of Glasgow
University of Freiburg Vienna University of
Technology University of Cologne
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The Planets team
All Staff Meeting, February 2007
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Planets Architecture
PreservationPlanningServices
CharacterisationServices
PreservationAction
ServicesTest Bed:
evaluation andvalidationservices
Interoperability Framework
Digital Content
OrganisationalContext
ExternalContext
Technical Environment
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Preservation Action
Transform content- Pluggable infrastructure for third-party
migration tools
Transform environment- Dioscuri:
Modular emulation of the full hardware/software environment
- Universal Virtual Computer (UVC):provides a layered durable approach to emulation
Preservation Action Tools registry XML language for describing preservation action tools
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Preservation Characterisation
Characterisation framework- Unifies tools for identifying file formats
and extracting object properties Characterisation registry
- Based on the file format registry PRONOM eXtensible Characterisation
Languages (XCL)- Family of XML languages
for characterising digital objects Comparator verifies effects of preservation actions
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Infrastructure and Testbed
Interoperability Framework providescommon basis- JBoss Application Server- Logging, Security Services- Registry services- User management and Single-Sign-On
Planets Testbed- Controlled environment for the execution of experiments- Accumulated experience base collected in registry
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Preservation planning
Collection profiling services
Technology watch services
Risk assessment of digital objects
Preservation planning methodology
Tool support: Plato, the Planning Tool
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Preservation planning
Evaluating preservation strategies Variety of solutions and tools exist Each strategy has unique strengths and weaknesses Requirements vary across settings Decision on which solution to adopt is complex Documentation and accountability is essential
Preservation planning assists in decision making Evaluation of strategies on representative sample content
according to specific requirements
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Overview
Digital Preservation Projects in Europelarge number, small selection provided below- DPE: Digital Preservation Europe, EU, FP6- Caspar: Cultural, Artistic and Scientific Knowledge for
Preservation, Access and Retrieval- Planets: Preservation and Long-term Access Networked Services: - Shaman: Sustaining Heritage Access through Multivalent Archiving- LIWA: Living Web Archives- Keep-it: Kultur, eCrystals, EdShare (and NECTAR) - Preserve It
IT-oriented Challenges in Digital Preservation Some Digital Preservation Research at TUWIEN Conclusions
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SecuringCommunication withthe future
Research & Development Project in Digital
Preservation
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SHAMAN Objectives
SHAMAN will establish an Open Distributed Resource Management Infrastructure Framework enabling Grid-based Resource Integration, that is firmly grounded in a conceptual and technical reference architecture.
SHAMAN will develop and integrate technologies to support Contextual and Multivalent Archival and Preservation Processes to enable proper preservation management and policies.
SHAMAN will support Managing of Future Requirements by safeguarding Interoperability with Future Environments based on evidence gathered through the characterisation of digital objects, their (metadata) context and their preservation environment, resulting in the evolution of preservation policies.
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SHAMAN will deliver a next-generation Digital Preservation framework, with three prototypical applications.
SHAMAN Outputs
scientific publishing in libraries and documents in governmental archives
digital objects used in industrial design and engineering
data resources used in e-Science applications
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SHAMAN Framework
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SHAMAN Consortium
SHAMAN Collaborators:
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Overview
Digital Preservation Projects in Europelarge number, small selection provided below- DPE: Digital Preservation Europe, EU, FP6- Caspar: Cultural, Artistic and Scientific Knowledge for
Preservation, Access and Retrieval- Planets: Preservation and Long-term Access Networked Services: - Shaman: Sustaining Heritage Access through Multivalent Archiving- LIWA: Living Web Archives- Keep-it: Kultur, eCrystals, EdShare (and NECTAR) - Preserve It
IT-oriented Challenges in Digital Preservation Some Digital Preservation Research at TUWIEN Conclusions
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FP7 project funded by the European Commission Started in Feb 2008 EA, L3S, Max Planck, Hungarian accademy of science,
Hanzo Archives, libraries and archives
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Users and challenges identified
User type Main concern Locker
National Libraries Size of archives No control of size and its evolution with time with implication on costs control.
Other Libraries Coherence Selecting and keeping appropriate content for their user community is difficult on the web
Institutional Archives
Fidelity Lack of fidelity to the original
TV and radio Archives
Variety of content type Impossibility to archive streaming
Museums Variety of content type Difficulty to archive non-standard formats
Corporate Archives Fidelity Fidelity to the original and temporal coherence for compliance
Researchers Fidelity Difference between original web and what current WA can deliver
End Users Interpretability Impression of getting lost in WA
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Technology concerned
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Approach
Example: Semantic Evolution Detection Time-Specific Term Contexts
Leningrad@1970 (Soviet Union, Hermitage, Moscow, Neva River, Baltic Sea,…)Saint Petersburg@2009 (Russia, Hermitage, Moscow, Neva River, Baltic Sea,…)
Across-Time Semantic Similarity compares term contexts and shows high similarity between Leningrad@1970 and Saint Petersburg@2009
Term Coherence analyzes term contexts and shows that Saint Petersburg@2009 and Hermitage@2009 are commonly used together
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Approach
Good query reformulations contain query terms similar to the original query terms that are commonly used together
Examples Saint Petersburg Museum Leningrad Museum ✔
Leningrad Cowboys Saint Petersburg Cowboys ✖
iPod Hearing Damage Walkman Hearing Damage ✔
disabled / handicapped / special needs
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Overview
Digital Preservation Projects in Europelarge number, small selection provided below- DPE: Digital Preservation Europe, EU, FP6- Caspar: Cultural, Artistic and Scientific Knowledge for
Preservation, Access and Retrieval- Planets: Preservation and Long-term Access Networked Services: - Shaman: Sustaining Heritage Access through Multivalent Archiving- LIWA: Living Web Archives- Keep-it: Kultur, eCrystals, EdShare (and NECTAR) - Preserve It
IT-oriented Challenges in Digital Preservation Some Digital Preservation Research at TUWIEN Conclusions
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KeepIt
Kultur, eCrystals, EdShare (and NECTAR) – Preserve It!
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Project Overview
Aim: To create a number of exemplar preservation repositories from which others can learn
Small number of very diverse repositories
TrainingDevelopment
Deployment
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Preservation
Long TermReliable Storage Risk Analysis
Mitigation / Action
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Long Term Reliable Storage
Export Plug-ins
EPrints is expanding the number places in which plug-ins can be utilised.
Import Plug-ins
EPrints CoreInterfaces, Submission Manager
Database Controller Storage Controller
CLOUD (Amazon S3)
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Overview
Why do we need Digital Preservation?
Digital Preservation Projects in Europe
IT-oriented Digital Preservation Challenges
Some Digital Preservation Research at TUWIEN
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DP Research Some provocative (?) observations IT R&D frequently suffers from disconnect between
academia and practice- research independent of development- theoretical results that cannot be applied to practice
DP R&D driven strongly by practice- many good and useful results- reactive instead of proactive- results need to be applicable now- lacks creative prospect into problems of the future- lacks acceptability for non-perfect solutions- little real IT research by IT experts
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DP Research DP research requires several IT sub-disciplines IT research in DP needs to
- build its own research agenda- live in an open-minded environment allowing
(initially) non-perfect solutions- be evaluated following stringent standards of
empirical evidence, validation and benchmarking- needs to be pro-active, foreseeing challenges
of the future- address a broader scope of topics that go beyond
migration/emulation, metadata and data management and similar currently dominant issues
DP an integral issue of all IT systems design
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DP Research
Urgently needed within DP community: Identify IT areas that need to contribute to DP research For each area, come up with the top-5 research questions These research questions should be concrete
- formulated as a research hypothesis- formulated as a PhD topic
How can we get these IT-disciplines involved? How can we get IT researchers motivated?
- e.g. DPE research challenge- remember the “test” (repeating old experiments)!
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DP Research
Potential areas: Databases:
- split of data and function and its description- PP-aware design and description- modeling data semantics for DP
IT security- secure documents, save formats- Signatures, long-term key management - DRM- long-term non-disclosure
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DP ResearchPotential areas: Information Retrieval:
- large-scale indexing and retrieval- evolution of semantics and spelling- modeling forgetting
Ethics- privacy, digital personalities and forgetting- information types and usage + IT support to enforce
Software Engineering- DP as systems engineering- secure workflows and trust- certification of system for DP fitness
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DP Research
Potential areas: Algorithms:
- semantics from code- cross-compilation- support for digital archeology- evolution of the concept of file formats
Storage:- advanced storage technologies- management of large storage systems- hybrid analog/digital storage- self-describing/monitoring storage systems
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DP Research
Potential areas: User interfaces
- Interfaces of the future- How to preserve/communicate interfaces long gone by
Application domains- effect of the quantum computer on DP of conventional
systems- mash-ups and distributed applications- pervasive computing and sensor networks- virtual worlds- threat scenarios in DP- home users
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DP Research
Many further areas – basically: all sub-disciplines of IT affected?
What would be the most challenging research questions in each of these?
How can we get experts in these disciplines get involved with DP research?
How can we make DP research more solid research by IT standards?
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Overview
Why do we need Digital Preservation?
Digital Preservation Projects in Europe
IT-oriented Digital Preservation Challenges
Some Digital Preservation Research at TUWIEN
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Why Preservation Planning? Several preservation strategies developed
- For each strategy: several tools available
- For each tool: several parameter settings available
How do you know which one is most suitable? What are the needs of your users? Now? In the future? Which aspects of an object do you want to preserve? What are the requirements?
How to prove in 10, 20, 50, 100 years, that the decision was correct / acceptable at the time it was made?
Preservation Planning
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Preservation Planning
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Preservation Planning
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Hoppla Archiving Solutions for
- SME- SOHO- Private Users
No/little expertise Service-oriented concept Similar to Antivirus Software User sends collection profile Experts perform Pres. Planning Rules for Preservation Actions are
provided Combines back-up and migration
HomeOfficePainlessPersistentLong-termArchiving
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HOPPLA Principles
Need for bit-stream and logical object preservation- combine back-up and migration
No expertise on and effort for digital preservation issues- fully automatic solution outsourcing DP expertise,
inspired by current antivirus solutions Stability and system independence
- rely on plain file system storage with redundant XML metadata Trust and accountability
- aim to fulfill core requirements of audit and certification initiatives
Privacy- data resides with users, control over information sent to server
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HOPPLA Architecture
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Context of Information
Digital information objects are not isolated- Exist in a specific context (to other objects)
Context is important for- Correct interpretation- Establishing authenticity- Ensuring appropriate use
Context is difficult to establish/document Often missing / incomplete / incorrect when manually
entered Automatically extract context of objects
- Establish contextual relations between them, generate new meta-data
Visualisation/interaction tool
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Context Dimensions: Currently establishing context along
- Time (creation, modification, ...)- Type, e.g. MIME types- Contributors / Social: people involved
• Creators, Modifiers, Users
- Content related features• e.g. same images embedded, same keywords
Other types of dimensions possible, e.g. concurrent usage of documents, ...
Applications: Ingest of donations, disaster recovery, IR
Context of Information
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Data Warehouse – Snowflake schema
Context of Information
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Context of Information
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Testing if significant properties stay intact It is well known how to extract and compare significant
properties for migrated objects With emulation original object is unchanged,
comparison of a rendered version is necessary Detection of a change in behaviour of object Interactivity has to be considered (applications, video
games, interactive art)
Evaluation of Emulation
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Goals Perform repeatable experiments Extract significant properties from the rendering process Automatically compare significant properties extracted
from different emulation environments Allow preservation planning for emulation environments Automate parts of the process of testing emulators
Evaluation of Emulation
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Different significant states- target state, series of states, continuous stream
Extracting properties from emulation environment- in characterization language (e.g. XCL)- e.g. cycles, frame rate (average/min/max) number of files/bytes
accessed on I/O devices, event logs, screenshots, video streams- not supported yet by emulators
Deterministic behaviour of object necessary- identify and keep constant causes of non-deterministic behaviour- e.g. user input, hardware timer values, random seed generation
Extracting rendered object from emulation environment- from different levels: system memory, video memory, output device
Evaluation of Emulation
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Original system Philips G7400 from 1983 encodes data in audio streams for recording on audio tapes
Migration Tool to extract the encoded data from the audio stream and migrate to non-obsolete formats
Extracted data: Software, screenshots, text & numeric data Can read data that is unreadable with original system
Recovering Digital Objects from Audio Wave Form
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Alternative strategy: not the objects and world data are extracted but scenes of interaction are recorded
Drone that moves inside Second Life and video records areas with user action
Besides technical difficulties ethical and legal issues
Preserving Virtual Worlds
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Ethics & Web Archiving
Web is very volatile Web archiving is an essential activity to ensure valuable
content is being preserved Web Archives contain a wealth of extremely valuable
information
But:
Currently most archives are closed to public Mostly due to legal reasons Need a legal solution
Is this all?
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What should such a legal solution look like? Is it only a legal problem?
There are things that are legal, but ethically dubious (There are things that are illegal, but ethically acceptable)
Privacy is an essential good Most societies are increasingly privacy-aware Are there ethical concerns, and if so
- Are we aware of them?- Can we do something to address them?
Ethics & Web Archiving
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Assumptions and a number of questions:
The Web is a new publication medium – Is it?
The ephemeral nature of Web pages is a “design fault” -
Is it?
A Web Archive is merely a collection of publicly available information – Is it?
Ethics & Web Archiving
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Assumptions underlying Web Archiving:
The Web is a new publication medium?- Are people “publishing”
(conscious decision, effort invested,…)- If so, are they aware of it?- Are kids allowed to publish?- Which parts of the Web are publishing,
which are communication?(ako chatting-in-the-bus?)
- Do we have a choice of NOT putting some things on the Web?
Ethics & Web Archiving
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Assumptions underlying Web Archiving
The ephemeral nature of Web pages is a “design fault”?- Post-it notes are based on a “faulty” glue
-> should we put real glue onto them?- If the Web is a publication medium: may there be some who use it
as such BECAUSE it is ephemeral?(art, temporary announcements, CV, …)
- Does being ephemeral make it more a communication medium in the perception of some people?
- Does society need en ephemeral way of communicating with larger communities in an ephemeral manner? (speaker’s corner, graffitti, …)
Ethics & Web Archiving
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Assumptions underlying Web Archiving:
A Web Archive is merely a collection of publicly available information- True, but what about Holism?
(The whole is more than the sum of it’s parts)- Does the ease of use, or the new possibilities of use, change the
nature of an information collection?(full-text search, semantic analysis, IR as opposed to conventional archive catalogs)
- Specialized person profile search engines, used by HR departments(special profile generation services to counter-act this)
- Technical possibilities will increase in the future(video analysis, semantic analysis, reasoning, …)
Ethics & Web Archiving
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Research Issues: What are the ethical constraints, and how they can be
more precisely defined or formalized, Which approaches users of Web archives with potentially
dubious intentions might employ to obtain information that should not be provided by privacy-respecting archives,
In how far technological solutions such as query analysis, machine learning and data mining can help in identifying potentially harmful queries, potentially incriminating content on Web pages, information worth of protection, or combinations thereof,
How legal regulations might be formulated in order to allow (partial) access to Web archive content in a save, ethically correct, and useful manner
Ethics & Web Archiving
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Overview
Some Digital Preservation Research at TUWIEN- Preservation Planning: PLATO- Small Home Office Archiving: HOPPLA- Establishing Context of Digital Information- Evaluating Emulators- Recovering Digital Objects from Audio Wave Form- Preserving Virtual Worlds- Ethical Issues in Web Archiving- Digital Preservation Time Capsule
Conclusions
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Digital Preservation Time Capsule
Digital Preservation suffers from a lack of public awareness solid understanding of the levels of complexity being abstract / intangible failing to graps people’s imagination seeming to be rather simple (only storage?)
even among some experts
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The Planets Digital Preservation TimeCapsule is a scientifically solid & visually appealing showcase
demonstrating general DP challenges & Planets solutions is a tangible and exciting demo showing the level of
complexity & the amount of information involved in preserving a few selected objects
aims at capturing the public’s and experts imagination, benefitting from a leveraging effect by involving media
May serve a basis for training, exhibitions and future research
Digital Preservation Time Capsule
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The Planets TimeCapsule is inspired by
Voyager Golden Record Rosetta Stone Long Now Rosetta Project Clock for the Long Now
and other initiatives aimed at making long-term thinking graspable
Digital Preservation Time Capsule
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Pick a set of Source Objects Describe them with PC-tools and PREMIS metadata Add representation information
- file format standards & documentation- programming language definitions, compiler info
(also for secondary objects) Add viewer (binary + source + OS + PREMIS + PC) Migrate them to more stable formats
- PA tools: description + source (+ PREMIS + PC)- PP: plan and evaluation of loss (+ PREMIS + PC)
Store them on different data carriers- Carrier description- Device description- File system description
Digital Preservation Time Capsule
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Overview
Why do we need Digital Preservation?
Digital Preservation Projects in Europe
IT-oriented Digital Preservation Challenges
Some Digital Preservation Research at TUWIEN
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Digital Preservation is an important issue Affects everybody and in all domains
- cultural heritage, industry, science, society at large, you and me! Significant research & development efforts Number of solid solutions Number of challenging open research issues Need to involve core IT experts from different domains Need to change perspective on DP research:
- from ex-post to pro-active- from external system to integrated part of all IT system design
Summary
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Paper, Tutorial, Panel & Workshop Submission 5 May 2010
Notification of Acceptance 18 Jun 2010
Submission of Final Versions 11 Jul 2010
iPRES 02010 September 19-25 2010
http://www.ifs.tuwien.ac.at/dp/ipres2010
iPRES 02010 Dates
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Thank you!
http://www.ifs.tuwien.ac.at/dp