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Response to Requirements
From Spatial Data on the Web Working Group
| Compatibility with existing practices | Addressed - Several mappings provided to existing standards cf. Vertical Segmentation |
| CRS definition | Out of scope - Reference to external vocabularies and an example how to use them cf. Location & Units of Measurement |
| Dynamic sensor data | Partially addressed - Lightweight SOSA core allows the modelling of observations using minimal metadata, new sosa:hasSimpleResult allows to attach values directly to Observations |
| Ex-situ sampling | Addressed - New sampling terms |
| Georeferenced spatial data | Out of scope |
| Humans as sensors | Addressed - sosa:Platforms can also be Humans |
| Independence on reference systems | Out of scope |
| Lightweight API | Partially addressed - Lightweight SOSA core allows modelling of sampling, observations and actuations using minimal metadata. Web of Things WG is taking SOSA core as input to their ThingID description model. |
| Linkability | Out of Scope - Data is by the virtue of using RDF linkable |
| Machine to machine | Addressed - Ontologies are provided in several machine-readable formats (i.e. RDF/XML and Turtle) |
| Mobile sensors | Out of scope - SSN does not provide explicit relations for georeferencing but relies on other vocabularies that provide such modelling (cf. Location section). Observations can be observed by a sensor that changes its location, i.e. the multiple instances of the sensor, each with different Geo-coordinates would need to be modeled. |
| Model actuation | Addressed - Actuation |
| Moving features | Out of scope - SSN does not provide explicit relations for georeferencing but relies on other vocabularies that provide such modelling (cf. Location section). FeaturesOfInterest can have multiple locations for each different Observation, i.e. the multiple instances of a FeatureOfInterest, each with different Geo-coordinates would need to be modeled. |
| Multilingual support | Addressed - All labels and other annotations in the ontology have correct language tags. Multiple translations of the ontology (German, French, Swedish etc.) will be provided. |
| Nominal observations | Addressed - Observations can have a sosa:hasSimpleResult that can take nominal values |
| Observation aggregations | Out of scope - Other vocabularies such as the RDF DataCube can be used for that, cf. http://www.semantic-web-journal.net/content/acorn-sat-linked-climate-dataset-0 |
| Provenance | Addressed - Vertical Module Mapping to PROV-O |
| Sampling topology | Addressed - Sample Relationships |
| Sensor metadata | Out of scope - Addressed by the ThingID descriptions of the WoT WG |
| Sensing procedure | Addressed - Procedures |
| Space-time multi-scale | Out of scope |
| Spatial vagueness | Out of scope |
| SSN profiles | Addressed - Horizontal Modules and Vertical Modules |
| SSN usage examples | Addressed - Vertical Modules |
| Support for 3D | Out of scope |
| Time series | Out of scope |
| Uncertainty in observations | Addressed |
| Virtual observations | Addressed - Addressed - sosa:Sensors can be virtual, e.g. software simulations |
