1. The operations join and restrict define a generalization ordering on conceptual graphs. Show that

1. The operations join and restrict
define
a generalization ordering on conceptual graphs. Show that the generalization
relation is transitive.

2. Specialization of conceptual graphs using join
and
restrict
is
not a truth-preserving operation. Give an example that demonstrates that the
restriction of a true graph is not necessarily true. However, the
generalization of a true graph is always true; prove this.

3Q. Define a specialized representation language to
describe the activities of a public library. This language will be a set of
concepts and relations using conceptual graphs. Do the

1. The operations join and restrict
define
a generalization ordering on conceptual graphs. Show that the generalization
relation is transitive.

2. Specialization of conceptual graphs using join
and
restrict
is
not a truth-preserving operation. Give an example that demonstrates that the
restriction of a true graph is not necessarily true. However, the
generalization of a true graph is always true; prove this.

3Q. Define a specialized representation language to
describe the activities of a public library. This language will be a set of
concepts and relations using conceptual graphs. Do the same thing for a retail
business. What concepts and relations would these two languages have in common?
Which would exist in both languages but have a different meaning?

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