--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