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| - !! SMS Semantic-Annotation XML Interchange Format |
| + !! KR/SMS Semantic Types |
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| - An annotation is composed of three parts: |
| + Datasets, actors (also known as services), and actor input and output ports are examples of resources that can have ''semantic types'', that is, types that classify and constraint the semantic, as opposed to structural interpretation resources. A semantic type may also describe how the semantic interpretation is "encoded" within a resource. For example, given a dataset that contains measurements of biomass at a particular location, the "encoding" may state that a particular column denotes biomass values and that another column denotes location values. |
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| - # __Resources.__ These are the objects being annotated (referred to). Typically there will only be one resource. We currently provide support for resources that are datasets, actors as a whole, or actor input and output ports. |
| - # __Semantic Types.__ These are ontology-based (i.e., concept) descriptions of the classifications of the resources. Typically there will be only one semantic type for a resource(s). |
| - # __Encodings.__ These are ''optional'' sets of expressions that link portions of resources to portions of the semantic types. An encoding links the two items, thus describing how the semantic types are "realized" within the resources. |
| + We define a ''semantic type'' as a set of one or more ''semantic annotations''. Generally speaking, a semantic annotation assigns some object (or set of objects) within a resource a meaning, where the "meaning" is specified via ontology expressions (that use terms from ontologies). A semantic annotation serves to "link" or "glue" a portion of a resource to a portion of an ontology. |
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| - An annotation takes the following form, expressed in XML: |
| + A semantic type expressed in XML takes the following form: |
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| - <sms:Annotation ID="..."> |
| + <sms:SemanticType ID="..."> |
