--17--
Identifier Weight
C2
W I
½
C12
+5
--7
+3
-4
Fig. 3 -- Format of a reweighting table
To illustrate the Use of this table, let us suppose
that in a certain stage of generating a sentence there are
five words, each of which can be the subject of the verb
previously selected for the sentence. The selection of
any word from these five will satisfy the restriction
pattern for the sentence. Instead of randomly selecting
one word out of these five candidates, we may want to
increase the probability of selecting a word which will
have semantic connections with the word(s) in the preceding
or current sentence. When there are choices in word selec-
tion, all candidates are preassigned equal weights, and
criteria relevant to the current selection are applied to
form a reweighting table. If a word in the list of can--
didates matches a word or belongs to a semantic class in
the table, the associated weight is added to its preassigned
weight. The final positive weights of all candidates are
