Across
- 1. Questions asked with ASK are called
- 2. The symbol x is called a
- 3. We can use the ______symbol to signify that two terms refer to the same object
- 4. has_________ and existential quantifiers to construct assertions about all or some of the
- 8. An atomic sentence is true just when the relation named by the predicate holds between the
- 10. the general process of knowledge-base construction— a process called
- 11. ________ are similar to sets
- 14. a representation language that is far more powerful than propositional logic
- 16. Propositional logic has a property that is desirable in representation languages, namely
- 17. they are entailed by the axioms
- 19. When we look at the syntax of natural language, the most obvious elements are nouns and noun phrases that refer to
Down
- 1. Extended interpretations, which map quantifier variables to objects in the model,truth of
- 5. A _________of a model is the set of objects or domain elements it contains
- 6. The syntax of first-order logic builds on that of
- 7. Natural languages also suffer from
- 9. The knowledge engineer might already be an expert in the domain, or might need to work with real experts to extract what they know—a process called
- 12. Knowledge representation languages should be declarative, compositional, expressive,context independent, and
- 13. values of the quantified variables.
- 15. A term with no variables is called a
- 18. _____is formed from a predicate symbol optionally followed by a parenthesized list of terms