Research Article
An Extensible Data Enrichment Scheme for Providing Intelligent Services in Internet of Things Environments
Table 2
Terms that are used in the extensible data enrichment and context information levels.
| Symbol | Name | Description |
| s | Subject | A vocabulary for representing the thing to be perceived | p | Predicate | A vocabulary for the relationship between s and o | o | Object | A vocabulary for representing the state or description of s | T | Triplet | A combination of s, p, and o in the form of < s, p, o > | G | Group | A set or union of triplet T | V | Vocabulary | String literals that can be chosen from the ThingsMetadata description | U | URIs | A set of uniform resource identifiers | B | Blank nodes | A node in RDF graphs representing an anonymous resource | L | Literals | A string or a numerical sequence of letters or digits | F(X) | Function for domain X | A function that defines how to process data enrichment | X | Domain X | A set of input data for data enrichment functions |
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