1. Using Knowledge Representation
Models and Metadata to develop e-
science applications for the Agricultural
Research Community
Giannis Stoitsis
stoitsis@agroknow.gr
KREAM 2013

2. “meaningful services
around high-quality
agricultural data pools”
http://www.agroknow.gr

3. • publications, thesis, reports, other grey literature
• educational material and content, courseware
• primary data, such as measurements & observations
– structured, e.g. datasets as tables
– digitized, e.g. images, videos
• secondary data, such as processed elaborations
– e.g. dendrograms, pie charts, models
• provenance information, incl. authors, their organizations
and projects
• experimental protocols & methods
• social data, tags, ratings, etc.
• …
agricultural research(+) content

4. • stats
• gene banks
• gis data
• blogs,
• journals
• open archives
• raw data
• technologies
• learning objects
• ………..
educators’
view

5. • stats
• gene banks
• gis data
• blogs,
• journals
• open archives
• raw data
• technologies
• learning objects
• ………..
researchers’
view

6. • stats
• gene banks
• gis data
• blogs,
• journals
• open archives
• raw data
• technologies
• learning objects
• ………..
practioners’
view

7. • stats
• gene banks
• gis data
• blogs,
• journals
• open archives
• raw data
• technologies
• learning objects
• ………..

8. is great
…but its not the answer

10. • aim is:
promoting data sharing and
consumption related to any research
activity aimed at improving
productivity and quality of crops
ICT for computing, connectivity, storage,
instrumentation
data infrastructure for agriculture

11. Publisher
Date Catalog
Subject
ID
Author
Title
we actually share metadata

12. e.g. an educational resource

13. …metadata reflect the context

14. …sometimes, data also included

15. We need also ontologies and
linked data
•
stats
•
gene banks
•
blogs,
•
journals
•
open archives
•
raw data
•
learning objects

16. typical problem: computing

17. typical problem: hosting

18. to curate & preserve data we need

19. what can be hosted and executed
on agINFRA
• Data storage & management tools
– APIs for content dissemination in large networks
• Processing & visualisation tools
• Metadata aggregation infra
• Search engines and apps for institutions or
communities
• Environments for running experiments e.g.
comparing different content recommendation
algorithms

20. Case 1: aggregating metadata for
agricultural data

21. metadata aggregations
• concerns viewing merged collections of
metadata records from different sources
• useful: when access to specific supersets or
subsets of networked collections
–records actually stored at aggregator
–or queries distributed at virtually aggregated
collections
21

22. typically look like this
22 Ternier et al., 2010

23. metadata aggregation tools
More than a harvester:
 Validation Service
 Repository Software
 Registry Service
 Harvester
23
Powered by

24. a metadata aggregation workflow that can be
ported on agINFRA
Harvesting Validating Transforming
OAI target -
XMLs
IndexingStoring
Automatic
metadata
generation
De - duplication
service
XMLs
Triplification

25. Case 2: Setting up SEARCH
SERVICE/portal over the cloud

31. Case 3: integrated environments to perform
research experiments

32. agINFRA Cloud/Grid
RatingsRatings
Monte Carlo
Simulator
Evaluation of recommendation algorithms
using grid and cloud infra
Recommender
servicesRatingsRatingsRatingsRatings
Infrastructure API
Components
API
Refine and
transform
Import Visualize
Prepare/pr
ocess
Evaluate
Web UI Researchers

33. Integrated environment for evaluating
recommendation algorithms

34. Case 4: Visualization of researchers’
network

36. Case 5: linking germplasm databases and
exposing descriptions As linked data

37. Mapping between different metadata
formats powered by agINFRA

38. Recommendations and publishing
in linked data

39. Case 6: building web based versions of
publications

40. composite/networked research

41. what researchers need in agINFRA
… only a browser and internet connection

42. thank you!
stoitsis@agroknow.gr
wiki.agroknow.gr
www.aginfra.eu