Discussion
Consider the following statements about frames.
1. Slots may carry default values.
2. Frames support inheritance along is-a links.
3. Procedures may be attached to slots.
Which of the statements given above is or are correct?
Answer: B
All three are genuine features: defaults express typical values, inheritance shares structure down a hierarchy, and attached demons compute values on access. Together they make frames a richer representation than rules for describing objects, which is why the two are usually combined rather than chosen between. The overridable default is also what makes frame reasoning non-monotonic.
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