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Andrew Jackson from British Library presents digital preservation tools from the EU projects Planets and SCAPE and the Open Planets Foundation which is a network providing practical solutions and expertise in digital preservation. Presented at 'Practical Tools for Digital Preservation: A Hack-a-thon' in York, September 28, 2011.
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www.openplanetsfoundation.org
PLANETS, OPF & SCAPE
A summary of the tools from these preservation projects, and where their
development is heading
www.openplanetsfoundation.org
PLANETS
• A big project to build digital preservation tools...
www.openplanetsfoundation.org
OPF’s Challenge
• The Open Planets Foundation was set up to sustain the PLANETS outputs into the future.
– But the tools are • Numerous, often complex, & of mixed quality/maturity
• Require complex technology stacks (JEE)
– So, how do we make the code sustainable? • Selection, modularisation, simplification
• Aim for a flexible suite of modular tools, rather than a monolithic system
www.openplanetsfoundation.org
SCAPE
• http://www.scape-project.eu/
• Many PLANETS partners
– Including OPF
• Many new partners too
• Driven by data
– Web archiving, science data, large-scale
• Cluster computing for scale
– Based on the HADOOP platform
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PLATO
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The PLANETS Testbed
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The PLANETS Testbed: Too Many Good Ideas In One Place
• Designing experiments
– Web GUI for complex workflows
• Running experiments
– All services hosted centrally, plus test corpora
• Analysing the results
– Per-experiment automated & manual analysis
– Multi-experiment aggregation & data mining
• Sharing all of the above
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Re-imagining The PLANETS Testbed: A Modular Approach
• Use separate tools in each role
– Experiment Design
– Execution
– Analysis
• Publish results from each
– Loosely coupled instead of all-in-one • i.e. sharing is built into the design
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Experiment Design: SCAPE Workflows In Taverna
• As part of SCAPE
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Experiment Design Support: SCAPE Service Registry
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Experiment Design Support: OPF Shared Test Corpora
• Simple collections accessed over HTTP
– No special browser software required
• Publicly hosted by HATII
– May also be mirrored by OPF members
• Stabilise corpora from Planets
– Adsorb corpora from SCAPE & elsewhere
• Look for Open Source CMS/Annotation tools
– Layer on top of HTTP collections
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Experiment Design Support: Sharing & Publishing Via myExperiment
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Experiment Execution Support: SCAPE’s Lightweight Tool Wrapping
• PIT: Preservation-action Invocation Tool
– Uses XML ‘tool specification’ documents that describe preservation actions • Command-line templates, Java classes, PLANETS/SCAPE
web services, etc
– Built to be shared • Can be published via, e.g. myExperiment
• Should lead to more reproducible results
– Re-using PLANETS interoperability code
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Experiment Execution: Multi-platform Tool & Workflow Invocation
• Shared tool specifications make multi-platform execution easier
– From the command line
– From within Taverna
– From the SCAPE cluster platform
– From a simplified web interface
• Run local-first, remote/service as needed
• Collect results in a standard form, using Testbed code
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Experiment Execution: Publishing Experimental Results Via REF
• OPF Results Evaluation Framework: REF
– Hard-coded experiments of common interest • Can run the experiment automatically
– Publishes results as linked data • http://data.openplanetsfoundation.org/ref/extension/
• Built by Dave Tarrant, based on P2 format registry
– Will come up again in the Identification session
– SCAPE aims to publish much more data
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Analysing Results: Linked Data & Future Plans
• REF allows data to be inspected
– Concentrating on collecting data at present
• Will expose SPARQL endpoint for data queries
– Analysis, visualisation can be build upon that
• Please add analysis Issues for your Datasets and preservation processes to the wiki!
– e.g. what graphs and statistics would be useful?
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Summary
• PLATO
– SCAPE will add Preservation Watch & more
• The PLANETS Testbed
– Re-imagined as a gateway to a complementary suite of preservation tools and data services
– SCAPE leveraging work from Taverna, IMPACT
• Development driven by user needs
– SCAPE Scenarios, AQuA/Hackathon Issues
