Keyphrases
- knowledge base
- logic programming
- conceptual graphs
- conceptual model
- intended meaning
- data model
- description logics
- background knowledge
- relational data model
- semantic relations
- temporal relations
- binary relations
- formal semantics
- algebraic structure
- relational schema
- semantic representation
- ontology mapping
- neural network
- semantic information
- preference relations
- databases
- semantic relationships
- spatial relations
- relational structures
- conceptual schema
- attribute values
- null values
- lexical semantics
- database