OpenAGRIS: using bibliographical data for linking into the agricultural knowledge web
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OpenAGRIS: using bibliographical data for linking into the agricultural knowledge web

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  • The process takes in input a set of AGRIS XML records (but it can be expanded for any data source, like data crawled from the Web) and loads them into a DBMS, in an object-relational data model. These data are consumed by a filter that transforms (data type conversion, data cleaning, data validation) and enriches them. Data are ready to be converted to RDF, loaded into a triple store and disseminated on the Web.
  • Starting from a resource requested by the user, OpenAgris queries the Agrovoc RDF repository to extract keywords and relationships to other datasets. Thus, Agrovoc is the OpenAgris backbone. If the resource is a journal’s article, the engine also queries the AGRIS journals dataset. This process can be extended to all areas of interest of the linked open data cloud, obtaining all possible information about the specific resource and its main topics

OpenAGRIS: using bibliographical data for linking into the agricultural knowledge web OpenAGRIS: using bibliographical data for linking into the agricultural knowledge web Presentation Transcript

  • OpenAGRIS: using bibliographical data for linking into the agricultural knowledge web FAO-OEKCS Fabrizio Celli, Stefano Anibaldi, Maria Folch, Yves Jaques, Johannes Keizer (presenting: Caterina Caracciolo)
  • Outline
    • Motivations
    • Moving from AGRIS to OpenAGRIS
    • Implementation
    • Conclusions + future work
    02/10/12
  • AGRIS
    • A partnership of agricultural centers to collect bibliographic records
    • Fostered by the Food and Agriculture Organization of the United Nations (FAO)
    • Started in 1974
    • 2.7 millions of bibliographic records (XML) accessible online
    02/10/12
  • Why AGRIS?
    • For data provider: a way to publish/advertise their research
    • For the public: a central place to access information about agriculture
    02/10/12 KISAF, Rome
  • 02/10/12 KISAF, Rome
  • 02/10/12 KISAF, Rome
  • Isn´t AGRIS enough?
    • No… simple b ibliographic records are static:
      • lack full text
      • Miss connections with related work, work done same authors, …
      • Miss connections with related web resources
    • Let’s try to make AGRIS more alive
      • -> OpenAGRIS!
    02/10/12
  • OpenAgris
    • A web application
    • Based on RDF
    • Extends AGRIS by aggregating information from more sources beyond the AGRIS providers
    • = A web application that uses AGRIS data converted to RDF and linked to other resources
    • = A linked-data environment that mashups the interlinked datasets
    02/10/12
  • How did we get to OpenAgris?
    • Convert the whole db in a format suitable for the web
    • translate the XML bibliographical records into RDF
    02/10/12
  • Linked Open Data
    • Publish structured data and link it with other datasets
    • Data is machine-readable,
    • Meaning of data is explicitly defined
    • It is linked to, and can be linked from external datasets”
    02/10/12
  • AGRIS data set
    • Includes
      • AGRIS bibliographic records
      • AGRIS journals – since 82.11% of AGRIS records are journal’s article, we created a dataset of agricultural journals with complete information about each journal
    • Converted into RDF
    • Resulted in ~ 60 million triples
    02/10/12
  • Conversion of AGRIS data set into RDF 02/10/12 Translation of the AGRIS XML repository to RDF (subject, predicate, object) and dissemination on the Web Unique Identifier
  • Steps of conversion
    • Assign unique URI to each record
    • Put XML records in DB
      • Apply consistency checks, transformations, …
    • Output is RDF
    • Load resulting triples into a triple store
    • Publish online
    02/10/12
  • Conversion of AGRIS data set into RDF 02/10/12
  • How is linking possible?
    • Linking is only possible if “common” information is available, e.g.,
      • Same authors
      • Same journal, ..
      • Same indexing vacabularies
    • AGROVOC is central to OpenAGRIS linking
    02/10/12
  • Linking through AGRIVIC 02/10/12 KISAF, Rome
  • Implementation
    • User issues a query
    • Document is retrieved
    • OpenAgris queries the Agrovoc RDF repository to extract keywords and relationships to other datasets
    • If the resource is a journal’s article, the engine also queries the AGRIS journals dataset
    02/10/12
  • Linked data output (HTML) 02/10/12
  • Interface for users
    • http://agris.fao.org/openagris/search.do?recordID=CZ2009000253
    02/10/12 KISAF, Rome
  • Conclusions
    • Collaboration between AGRIS partners continues with OpenAGRIS
    • Data dissemination is leveraged
    • Conversion to Linked Data pubblication is possible, actually even easy…
      • But use of appropriate vocabularies is essential
    • Process is repeatable by others…
      • the more the better!
    • A resource like AGROVOC has proven extremely useful
    02/10/12
  • Conclusions cont’d
    • In its original conception OpenAGRIS was to be a purely RDF-based application
    • But still only a few domains intersecting the agricultural domain offer RDF web services
    • Pragmatic considerations of basic data availability thus necessitated the use of non-RDF APIs
    02/10/12
  • Future work
    • Further authomatize of the data collection process
      • Data harversting
    • Improve accessibility: SPARQL endpoint, RDF and non-RDF web services
    02/10/12
  • Contacts
    • AGRIS and OpenAGRIS beta:
      • http://agris.fao.org
    • AIMS website
      • http://aims.fao.org
    • Author’s email:
      • Name .surname @ fao.org
    02/10/12