Knowledge Base--KB

The Knowledge Base of DIRECTOR contains the following items.

1. Concept Space that encodes the agent's world knowledge which include:
   • TOS tasks
   • TOS commands
   • TOS readings
   • Domain objects, object names, properties and values of properties
   • Relationships (usually termed ontology) of these objects
   • DIRECTOR commands to create any of the above items
   • Causal relationships between TOS commands, TOS tasks and TOS readings (represented by $\precond$ and $\effect$ axioms (Section 6.1).
2. Interpretation Space that contains explicit representations for the following levels of interpretation of an utterance.
   • actual words in the utterance
   • parse of the utterance
   • request (main verb) in the utterance
   • object references in the utterance, maintaining all ambiguity present in the original utterance (e.g. which light is the ``bedroom light'')
   • disambiguated object references

3. Observations

4. Desires of the agent to perform different UIA actions and to achieve different values for the various properties of each domain object.

5. Intentions of the agent

6. Expectations that the agent has

7. Achievements

8. Rules (axioms) that implement the deliberative components and meta-cognitive process of Figure 8.1