Technology Exploration – Semantics

Karen MoeNASA Earth Science Technology Office

WGISS-37 MeetingApril 14-18, 2014

Agenda

Overview of Semantic Technology Development• SWEET: Semantic Web for Earth and Environmental

Terminology

• SESDI: Semantically Enabled Scientific Data Integration

• Community efforts on semantic webGoal• Terminology => Taxonomy => Ontology => Tools for

Discovery & Use of satellite-derived knowledge

Semantic Web for Earth and Environmental Terminology

SWEET is a concept space • Enable scalable classification of Earth

system science concepts (and expanded to space science)

• Anyone can import, expand and specialize the work of others- No need to regenerate a physics,

chemistry, or math ontology • Concept space is translatable into other

languages/cultures using ‘sameAs’ notions

• SWEET initially created to capture relationships between GCMD keywords - Controlled keywords represented as a

taxonomy - Uncontrolled keywords - data provider

may submit additional uncontrolled keywords within their metadata records

Initial development: Rob Raskin/JPLCurrent: Thomas Huang/JPL

SWEET – Upper Level Earth Science Ontology

• v1.0 - 01/2004 DAML+OIL - to capture relationships between GCMD keywords

• v2.0 - 03/2009 OWL

• v2.1 - 05/2011 OWL-DL

• v2.2 - 06/2011 OWL Full

• v2.3 - 09/2011 OWL Full - highly modular with over 6000 concepts in 200 separate ontologies

• v2.4 – in Progress (T. Huang/JPL for DARPA)

SWEET is an Upper-Level Ontology• Common definitions for terms use in multiple disciplines• Common language in support of community and multidisciplinary activities• Common ‘properties’ (relations) for tool developers• Reduce burden on creators of specialized domain ontologies

SWEET Information

• Current SWEET Users (2014)• ESML - Earth Science Markup Language• ESIP - Earth Science Information Partner Federation• GEON - Geosciences Network• GENESIS - Global Environmental & Earth Science Information System• IRI - International Research Institute (Columbia)• LEAD - Linked Environments for Atmospheric Discovery• MMI - Marine Metadata Initiative• NOESIS – Semantic Search Engine and Resource Aggregator for Atmospheric Science• PEaCE - Pacific Ecoinformatics and Computational Ecology• SESDI - Semantically Enabled Science Data Integration• VSTO - Virtual Solar-Terrestrial Observatory• AVM – DARPA Adaptive Vehicle Make

The SWEET distribution site http://sweet.jpl.nasa.gov averages over 200K hit each month across the globe by SWEET-enabled applications and tools

Thomas Huang

Jet Propulsion Laboratory

4800 Oak Grove Drive, Mail Stop 158-242, Pasadena, CA 91109

Phone: 818.354.2747, Cell: 626.318.4637, Email: thomas.huang@jpl.nasa.gov

Semantically Enabled Scientific Data Integration: SESDI Methodology

Benedict, J., D. McGinness, and P. Fox, AGU 2007

ESIP Federationhttp://wiki.esipfed.org/index.php/Semantic_Web

https://earthdata.nasa.gov/esdswg/technology-infusion-tiwg/semantic-web/earth-science-data-system-projects-using-semantic-web

Next Steps

• Need for information content to support CEOS disasters pilots• Proposal for collaboration between WGISS and ESIP Federation to

develop methodology to identify key terms in Disaster domains- Terminology- Classification- Relationships

• WGISS-37 discussion tomorrow- Support to CEOS WG Disasters