SWEET 2.1 OntologiesSWEET 2.1 Ontologies

Rob RaskinRob Raskin

NASA/Jet Propulsion LaboratoryNASA/Jet Propulsion Laboratory

Semantic Web for Earth and Semantic Web for Earth and Environmental Terminology Environmental Terminology

(SWEET)(SWEET)

Concept space written in OWL-DLConcept space written in OWL-DL Serves as middle-to-upper level ontology for Serves as middle-to-upper level ontology for

Earth system scienceEarth system science Enables Enables scalablescalable classificationclassification of Earth system of Earth system

science and associated data and applicationsscience and associated data and applications Version 2.1 contains 6400 modular conceptsVersion 2.1 contains 6400 modular concepts

200 modular ontologies200 modular ontologies

Scope of SWEETScope of SWEET

Integrated ontologiesIntegrated ontologiesEarth system scienceEarth system scienceEarth science applicationsEarth science applicationsScientific unitsScientific unitsSpace/timeSpace/timeData quality Data quality Data provenanceData provenanceData typesData typesData servicesData services

In conjunction withESIP FederationSemantic Web Cluster

SWEET Top-Level ViewSWEET Top-Level View

New in SWEET 2.1New in SWEET 2.1

Version 2.1 provides a large module set Version 2.1 provides a large module set for STATEfor STATEMostlyMostly adjectives adjectives and and adverbsadverbsExamples: Role, color/band, shape, size, Examples: Role, color/band, shape, size,

equilibrium type, activity level, equilibrium type, activity level, connectedness, impact, substance formconnectedness, impact, substance form

Enables greater separation of adjective from Enables greater separation of adjective from object to improve modularity object to improve modularity

Mostly represented by OWL individualsMostly represented by OWL individuals““types” of categorical, ordinal, and cardinal valuestypes” of categorical, ordinal, and cardinal values

SWEET Provides Set of SWEET Provides Set of Building BlocksBuilding Blocks

CF (traditional controlled parameter name):CF (traditional controlled parameter name):tendency_of_mole_concentration_of_dissolved_tendency_of_mole_concentration_of_dissolved_inorganic_phosphorus_in_sea_water_due_to_inorganic_phosphorus_in_sea_water_due_to_biological_processesbiological_processes

SWEET SWEET (multi-attribute parameter name):(multi-attribute parameter name): Property= mole_concentrationProperty= mole_concentration Science_Processing= tendencyScience_Processing= tendency State= dissolved, inorganicState= dissolved, inorganic Substance= phosphorousSubstance= phosphorous Medium= sea_waterMedium= sea_water Process= biological_processesProcess= biological_processes

Mapping to Climate and Mapping to Climate and Forecasting (CF) Standard NamesForecasting (CF) Standard NamesConversion table expresses each of the Conversion table expresses each of the

2200 standard names in terms of SWEET 2200 standard names in terms of SWEET termsterms

Available on SWEET web site as Excel Available on SWEET web site as Excel spreadsheetspreadsheet

SWEET-CF Comparisons:SWEET-CF Comparisons:RelationsRelations

Scientific processes and assumptionsScientific processes and assumptions due_to, assuming, defined_by, by, expressed_as, due_to, assuming, defined_by, by, expressed_as,

from, with, without, excluding, tofrom, with, without, excluding, to subpropertyOf sweet:scientificRelationsubpropertyOf sweet:scientificRelation

DirectionalDirectional In, out_of, reflected_by, at, over, above, below, intoIn, out_of, reflected_by, at, over, above, below, into subpropertyOf sweet:spatialRelationsubpropertyOf sweet:spatialRelation

OtherOther Of, wrt, sinceOf, wrt, since

SWEET-CF Comparisons:SWEET-CF Comparisons:Spectral RangesSpectral Ranges

CFCF Shortwave, photosynthetic, longwave, microwave, Shortwave, photosynthetic, longwave, microwave,

spectralspectral A separate spectral range table would be helpful, A separate spectral range table would be helpful,

particularly for observational dataparticularly for observational data SWEETSWEET

Entire electromagnetic spectrum bands (e.g., EUV, Entire electromagnetic spectrum bands (e.g., EUV, HardXray, VHF)HardXray, VHF)

Spectral linesSpectral lines Machine readable definitions of wavelength or Machine readable definitions of wavelength or

frequency rangesfrequency ranges

States in CF States in CF (subset of SWEET states)(subset of SWEET states)

AmbientAmbient AerosolAerosol AromaticAromatic AtomicAtomic BlackBlack DivalentDivalent DryDry CalcareousCalcareous CondensedCondensed CrystalCrystal

DissolvedDissolved DropletDroplet DryDry ElementalElemental FrozenFrozen FloatingFloating GaseousGaseous IceIce InorganicInorganic LiquidLiquid MiscellaneousMiscellaneous

MoistMoist MolecularMolecular OrganicOrganic OxygenatedOxygenated ParticleParticle ParticulateParticulate SaturatedSaturated SuspendedSuspended UndersaturatedUndersaturated UnfrozenUnfrozen VaporVapor

GovernanceGovernance

ESIP Semantic Web Cluster to provide ESIP Semantic Web Cluster to provide overall governanceoverall governance

Marine Metadata Institute (MMI) will Marine Metadata Institute (MMI) will provide further support through common provide further support through common ontology services ontology services term-specific comments, comparisons, term-specific comments, comparisons,

access, archiving, versioning, etc.access, archiving, versioning, etc.Tools can make it easy for the community to Tools can make it easy for the community to

contribute new concepts to the SWEET corecontribute new concepts to the SWEET core

ResourcesResources

SWEET ontology: SWEET ontology: http://sweet.jpl.nasa.govhttp://sweet.jpl.nasa.gov

Rob Raskin raskin@jpl.nasa.govRob Raskin raskin@jpl.nasa.gov