Diapositive PPT
Interoperability (= main goal of Semantic Web)
- Why semantics? (interoperability ìthe next level upî from TCP/IP, HTML, XML, Ö?)
- Defined w.r.t. set of operations, w.r.t. identity
- common standards or translations and mappings
Multiplicity of languages,
- too high step-in cost
- layering of languages (*, +),
- opportunities for merging? (workshop series) (e.g. XML Schema, RDF Schema, Topic Maps) (ditto for query langís, tranformation langís, path models).
Reconciling modelling styles/paradigms
- Axioms-style/frame-style(*, +) / constraint-style / rule-style
- Formal differences and community aspects
- Combining Knowledge Repr approach and Database approach
Different reasoning services
- Querying, consistency(*), inheritance(*), matching, similarity/difference, classification/type-inference, object-identify, cycle-detection(*), anomaly-detection(*)
Tolerant inferences, levels of tolerance (some *ís)
- pragmatic levels
- Complexity levels
- Anytime, gradual, resource bounded, continous, streaming
Notion of identity
- Globally unique names,
- Semantics of URI identity
- Scoping, modularity, namespaces
- Use-mention distinction
- Rigid designators/temporal identity