Semantic Web Tools in support of Agricultural Content Representation & Retrieval Gerard Sylvester The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
Nov 04, 2014
Semantic Web Tools in support of Agricultural Content
Representation & Retrieval
Gerard Sylvester
The International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
This research is being carried out at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) under the guidance of Dr. V Balaji by the Knowledge Management and Sharing team at ICRISAT. This is supported by the NAIP of the ICAR.
http://www.icrisat.org/
Acknowledgement
Chaos in Agricultural Research and Extension
• Agricultural content is dispersed and there is no unified view to integrate the resources.
• Difficulty in sharing common content in the agricultural realms
• Content is tightly coupled with the context and the presentation medium
The Solution!
• Unified Knowledge/Resource organization model needed – Integrated View
• Semantic Tools provide for Knowledge Representation & Sharing
• Specialized and enhanced navigation
• Provides for rapid information aggregation from reusable information objects
Why Semantic Web Tools?
• To associate meaning with content
• Establishing a layer of machine understandable data that would facilitate automated agents, sophisticated search engines and interoperable services.
• It will enable a higher degree of automation and more intelligent applications.
• THE ULTIMATE GOAL : to allow machines to share and exploitation of knowledge in the Web way
Components of the experiment
• Content Organization (Semantic Mediawiki & Topic Map)
• Content Packaging (eXe Editor)
• Content Navigation (Topic Maps & Semantic Mediawiki)
Semantic VASAT Wiki Ingredients
+ + =
FAO’s AGROVOC provides the Ontology to link information objects in the Wiki facilitated by OntoWorld’s Semantic Tool
Semantic ToolMediaWiki S/w FAO’s AGROVOCSemantic
VASAT Wiki
http://vasatwiki.icrisat.org
An Ongoing Experiment with SMW + Ontology
• Uploaded agricultural content onto VASAT wiki (1000 articles uploaded from Wikipedia)
• Categorized content according to AGROVOC
• Manually divided available articles into information objects and
• Created ontological relationships (Semantics) among the information objects in the VASAT wiki
Workflow
Curation
SemanticVASAT Wiki
VersionStaging
AGROVOC
Ontologies, categorization
Agriculture article
Extract Agricultural Articles
Wiki +
Semantic tool +
Ontology
CommunityReview
http://vasatwiki.icrisat.org/index.php/Chickpea
Information objects
Information Objects on VASAT Wiki
Wikipedia Articlehttp://en.wikipedia.org/wiki/Pigeonpea
VASAT Wiki Articlehttp://vasatwiki.icrisat.org/index.php/Pigeonpea
Article extracted and Semantic links established manually
1
4
32
An Ongoing Experiment with Topic Maps + Ontology
• Topic Maps to facilitate Repurposing of Agricultural Information Objects
• Provides a meta-structure over dispersed information objects
• Provides the ability to map dynamic content onto the knowledge structure
Aggregate Resources
Content aggregated from VASAT Wiki
Content from externalWebsite
Integrate content from various sources
Content aggregated thus could also be exported to various formats
Wiki Article
External Website
Content Package
Content Packaging from different sources
Content RepurposingContent repackaging and repurposing to be exported to many different formats
The Topic Map ConceptChickpea
Pests
Legume
Rust
PigeonpeaDiseases
Cultural practices
DBWeb pages
Associations
Occurrences
Web page
Knowledge
Layer
Information
Layer
Topic Map for VASAT’s Learning Objects
VASAT LO repository
AGROVOC
ICRISAT’sCrop Topic Map
Available at: http://test2.icrisat.org/
Topic Map - Visualized
A Pigeonpea Topic Map displayed using Ontopoly Software
Looking Forward…
Content Organization
Ontology + Wiki-like interface
ICAR
Intl.agencies
OtherNARS
agenciesCommodity
Markets
Weather / Meteorology
DynamicData
SAUs
K-Base
Imagery/Maps
KVKs NGOs DoA
Q&A; activitieslog