Introduction
Following the best practices related to the publication and usage of data on the Web designed to help support a self-sustaining ecosystem, in this section it is covered the "Best Practice 15: Reuse vocabularies, preferably standardized ones". This practice says that "Use terms from shared vocabularies, preferably standardized ones, to encode data and metadata".
For data model
The statistical data model is designed on top of the following existing vocabularies:
- Dublin Core for properties common to most resources
- RDF Data Cube provides a means to publish multi-dimensional data, such as statistics, on the web in such a way that it can be linked to related data sets and concepts using RDF
- Computex (Computing Statistical Indexes) can be seen as an extension of RDF Data Cube vocabulary to handle statistical indexes.
- SDMX (Statistical Data and Metadata eXchange), an ISO standard for exchanging and sharing statistical data and metadata among organizations.
- The OWL-Time ontology is an ontology of temporal concepts, for describing the temporal properties of resources in the world
- The Schema.org vocabulary for properties of all relevant entities (creative works, persons, organizations, events, places)
- The SKOS vocabulary for all related concepts
The bibliographic and content model is designed on top of the controlled vocabularies created by the Land Portal and the following existing vocabularies:
- Dublin Core for properties common to most resources
- The Bibliographic Ontology for more specialized properties for bibliographic resources
- The FOAF vocabulary for properties of entities like persons and organizations
- The Schema.org vocabulary for properties of all relevant entities (creative works, persons, organizations, events, places)
- The SKOS vocabulary for all related concepts
For data storage
The model is designed on top of the following existing vocabularies:
- ISO 8601 for date and datetime ('yyyy-mm-dd')
- ISBN/ISSN/doi/handle for bibliographic unique identifier
- ISO 3166-1 alpha-3 (aka ISO3) and ISO 3166-1 alpha-2 (aka ISO2) code for country codes
- UN M.49 code, for region (multiple countries) codes
- ISO 639-1 and ISO 639-3 for language codes
- RDFLicense URI for licenses
- ISO 4217 code for currencies
and the controlled vocabularies and taxonomies created by the Land Portal, such as:
- Themes and LandVoc concepts (based on Agrovoc), to classify the topical coverage of a resource.
- Regions & Countries, to classify geographical coverage of a resource.
- Languages, to identify the language of a resource.
- Licenses, to inform about the particular copyright terms of a resource.
- Land Library Resource Types, to classify the type of bibliographic resource published.
- Organization Types, to classify the organizations.
- Currencies, to indicate the currency of a project's budget.
For information retrieval
Outside the Land Portal, our partners are using different standards to model and storage their data. For instance, some of this standards are:
- AGRIS AP XML
- Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH)
- Google Search Appliance results
- Journal of Economic Literature (JEL) classification (for tagging content)
- EndNote Library XML
- RIS Format
- Library of Congress Classification (LCC), a library classification system developed by the Library of Congress of USA.