IoT Semantics

Linked data

http://linkeddata.org/

Resource Description Framework (RDF)

https://www.w3.org/RDF/

Json-ld

Json for linked data http://json-ld.org/

Entity and Observations semantic

Semantic for entities and the observations the produce can be defined using the Entity Types and Observation Types This configurable semantic in composed of :

• Type general info (name, description, geometric representation)
• Type specific properties
• In the case of the entity types, the set of observation types that the given entity type can produce

Each specific property contains its own semantic to define :

• Property data type; there are 3 kinds of property types

Select property type

• primitive types

Select primitive type

• collection things type
• collection/single things instances

Select thing instance

• Valid range or regular expression according to the data type
• Translation to the supported languages
• Limit of copies to keep for the property

Entity and Observations instances

Instances are resources of a specific semantic type, that have values for each property defined in the semantic.

Publishing semantic

• Thing type
• Observation
• Rules