11 Feb 2004*
CS 3243 - Optional Lecture - NLP
38
•Structure of coherent discourse: Sentences are joined by coherence relations
•Examples of coherence relations between S1 and S2:
–Enable or cause:  S1 brings about a change of state that causes or enables S2
ϊ“I went outside. I drove to school.”
–Explanation: the reverse of enablement, S2 causes or enables S1 and is an explanation for S1
ϊ“I was late for school. I overslept.”
–Exemplification: S2 is an example of the general principle in S1
ϊ“This algorithm reverses a list. The input [A,B,C] is mapped to [C,B,A].”
–Etc.
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Discourse Understanding