--- pl:prolog:pllib:dcg_tree [2019/06/27 15:50]
+++ pl:prolog:pllib:dcg_tree [2019/06/27 15:50] (aktualna)
@@ Linia 1: / Linia 1: @@
+====== Dcg tree ======
+{{tag>DCG linguistics trees}}
+===== Description =====
+A DCG computing a parse tree
+**Source**:  The Art of Prolog
+===== Download =====
+Program source code: {{dcg_tree.pl}}
+===== Listing =====
+<code prolog>
+        sentence(sentence(NP,VP)) --> noun_phrase(NP), verb_phrase(VP).
+        noun_phrase(np(D,N)) --> determiner(D), noun_phrase2(N).
+        noun_phrase(np(N)) --> noun_phrase2(N).
+        noun_phrase2(np2(A,N)) --> adjective(A), noun_phrase2(N).
+        noun_phrase2(np2(N)) --> noun(N).
+        verb_phrase(vp(V)) --> verb(V).
+        verb_phrase(vp(V,N)) --> verb(V), noun_phrase(N).
+%       Vocabulary
+        determiner(det(the)) --> [the].
+        determiner(det(a)) --> [a].
+        noun(noun(pieplate)) --> [pieplate].
+        noun(noun(surprise)) --> [surprise].
+        adjective(adj(decorated)) --> [decorated].
+        verb(verb(contains)) --> [contains].
+%      Program 19.7:  A DCG computing a parse tree
+</code>
+===== Comments =====

pl/prolog/pllib/dcg_tree.txt · ostatnio zmienione: 2019/06/27 15:50 (edycja zewnętrzna)

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