CEDAR is a metadata management tool that lets user define metadata templates using a well described yet flexible metdata format. CEDAR then presents the forms represented by those templates to other users to fill out. CEDAR offers semantic precision (with support from the BioPortal ontology repository), metadata completion assistance, intelligent recommendations, support for JSON-LD and RDF metadata export, and an easy-to-use user interface.
7. The CEDAR Vision
• End-to-end improvement in
biomedical metadata
• Compatibility with best known
practices and standards
• Use of existing semantic and
data structure resources
• A simple ‘life of metadata’ for
users
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10. CEDAR technology
• Interfaces for users
– Create metadata template fields based on controlled terms
– Assemble them into composite templates (a la forms)
– Fill out templates with experimental metadata
• A repository of metadata
– Enables metadata discovery
– Guides predictive entry of new metadata
– Informs creation of templates
• Links to unique, rigorous encodings and open data
– Metadata fields are well described (a la CDEs)
– Metadata are encoded using appropriate terms
– References can be found and clearly cited
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24. JSON Schema + JSON-LD JSON-LD
Using JSON Schema and JSON-LD for
CEDAR Template Model
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25. What is JSON Schema?
• Technology for describing and validating the
structure of JSON documents
• Provides a structural description of any
JSON document
• JSON documents that are specified with
JSON Schema can be structurally validated
against their associated schemas
• Analogous to XML Schema
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26. What is JSON-LD?
• A lightweight syntax to serialize Linked Data in JSON
• Allows existing JSON to be interpreted as Linked Data
with minimal changes
• JSON-LD is primarily intended to allow:
– using Linked Data in Web-based programming
environments
– building interoperable Web services
– storing Linked Data in JSON-based storage engines
• Core contribution: add semantics to JSON documents
• W3C Recommendation: https://www.w3.org/TR/json-ld/
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