the national center for biomedical ontology online knowledge resources for the industrial age mark...
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The National Center for Biomedical Ontology
Online Knowledge Resources for the Industrial Age
Mark A. Musen
Stanford University
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National Centers for Biomedical Computing—20051. National Center for Integrative
Biomedical Informatics (Michigan)2. National Center for Multi-Scale Study
of Cellular Networks (Columbia)3. National Center for Biomedical
Ontology (Stanford, plus a cast of thousands)
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• Stanford: Tools for ontology alignment, indexing, and management (Musen)
• Lawrence–Berkeley Labs: Tools to use ontologies for data annotation (Lewis)
• Mayo Clinic: Tools for access to large controlled terminologies (Chute)
• Victoria: Tools for ontology visualization (Story)
• University at Buffalo: Dissemination of best practices for ontology engineering (Smith)
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cBio Driving Biological Projects
• Flybase (Cambridge, Ashburner)
• ZFIN (Oregon, Westerfield)
• Trial Bank (UCSF, Sim)
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The National Center for Biomedical Ontology
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Knowledge workers seem trapped in a pre-industrial age
• Most ontologies are of relatively small scale• Most ontologies are built and refined by small
groups working arduously in isolation• Success rests heavily on the particular talents
of individual artisans, rather than on standard operating procedures
• There is an urgent need for new technologies to make the process “faster, better, cheaper”
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A Portion of the OBO Library
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Throughout this cottage industry
• Lots of ontology development, principally by content experts with little training in formal modeling
• Use of development tools and ontology-definition languages that may be– Limited in their expressiveness– Useless for detecting potential errors and guiding
correction– Nonadherent to recognized standards– Proprietary and expensive
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cBio plans to offer technologies
• To help build and extend ontologies• To locate ontologies and to relate them
to one another• To visualize relationships and to aid
understanding• To facilitate evaluation and annotation
of ontologies
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Ontologies are not like journal articles
• It is difficult to judge methodological soundness simply by inspection
• We may wish to use an ontology even though some portions – Are not well designed– Make distinctions that are different from those that
we might want
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Ontologies are not like journal articles II
• The utility of ontologies– Depends on the task– May be highly subjective
• The expertise and biases of reviewers may vary widely with respect to different portions of an ontology
• Users should want the opinions of more than 2–3 hand-selected reviewers
• Peer review needs to scale to the entire user community
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Solution Snapshot
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In an “open” rating system:
• Anyone can annotate an ontology to say anything that one would like
• Users can “rate the raters” to express preferences for those reviewers whom they trust
• A “web of trust” may allow users to create transitive trust relationships to filter unwanted reviews
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Possible Review Criteria
• What is the level of user support? • What documentation is available?• What is the granularity of the ontology
content in specific areas?• How well does the ontology cover a particular
domain?• In what applications has the ontology been
used successfully? Where has it failed?
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Bringing ontologies to the industrial age will require:
• Environments that support community-based peer review
• Standard meta-data for storing reviews, indexes, alignments, and other annotations
• Environments for both ontology engineering and ontology access that can take advantage of these meta-data
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A Portion of the OBO Library
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Toward industrial-strength ontology repositories
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BioPortal
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cBio will move the biomedical community from individual, one-off ontologies and one-off tools to:
• Integrated ontology libraries in cyberspace• Meta-data standards for ontology annotation• Comprehensive methods for ontology indexing and
retrieval• Easy-to-use portals for ontology access, annotation,
and peer review• End-user platforms for putting ontologies to use for
– Data annotation– Decision support– Natural-language processing– Information retrieval– And applications that we have not yet thought of!
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Synergies with NCOR
• Opportunities for shared education and training in ontology engineering
• Opportunities to evaluate basic NCOR technologies in biomedical domains
• Opportunities to evaluate basic cBIO technologies in new venues and in new problem areas
• Opportunities to share knowledge and experience
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The National Center for Biomedical Ontology
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Cooperating R01 proposals are now being solicited by the NIHNew driving bio. Projects will be add e3very 203 tyearsAd hoc collaborations are always welcomeCOLLABORATION WITH THE NCBO
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• comedy is tragedy with time• Reactome authors and inference.• Bias towards action• Ask Mark whether the existing archives of GO
requests, etc. could be used to begin building ontology reviews?
• One social criteria for collaboration with ncbo is that the contact represents >1 group.