Differences

This shows you the differences between two versions of the page.

--- public:t-malv-15-3:6 [2015/09/23 22:43] – created orvark
+++ public:t-malv-15-3:6 [2024/04/29 13:33] (current) – external edit 127.0.0.1
@@ Line 39: / Line 39: @@
 ==== 1.2 Add Personal Pronouns ====
-Add the [[https://en.wikipedia.org/wiki/Pronoun#Personal|personal pronouns]] to the grammar.
+Add some [[https://en.wikipedia.org/wiki/Pronoun#Personal|personal pronouns]] to the grammar.
 Examples: 'I saw a bear', 'he frightened me'
@@ Line 47: / Line 47: @@
 Add some verbs and alter the grammar to make it differentiate between [[https://en.wikipedia.org/wiki/Transitive_verb|transitive]] and [[https://en.wikipedia.org/wiki/Intransitive_verb|intransitive verbs]].
-Examples: 'the bear died', 'Joe saw the bear die', 'Buster gave Joe a fish'
+Examples: 'the bear died', 'Joe saw the bear was dead', 'Buster gave Joe a fish'
 ==== 1.4 Add Number Agreement ====
-Alter the grammar to add [[https://en.wikipedia.org/wiki/Agreement_(linguistics)#Number|number agreement]], start with something like ''S -> NPsg VPsg | NPpl VPpl'' and continue down the productions. Add plural forms of nouns.
+Alter the grammar to add [[https://en.wikipedia.org/wiki/Agreement_(linguistics)#Number|number agreement]], start with something like ''S -> NPsg VPsg | NPpl VPpl'' and continue down the productions. The terminals could for example be something like: ''Nsg -> 'bear' | ...'', ''Vtsg -> 'eat' | 'eats' | ...''. Add plural forms of nouns.
 Examples: 'a fish dies', 'the bears frightened a little squirrel'
-**What to hand in: A CFG grammar with all the modifications. Code to print out a couple of sentence parses for each subsection here above.**
+**What to hand in: Your CFG grammar with all the modifications. Code to print out a couple of sentence parses for each subsection here above.**
 ===== 2. Parse PCFG =====
@@ Line 66: / Line 66: @@
   ...
   """)
+viterbi_parser = nltk.ViterbiParser(pgrammar)
+for tree in viterbi_parser.parse(['Buster', 'saw', 'a', 'bear']):
+    print(tree)
 </code>
@@ Line 71: / Line 75: @@
 **What to hand in: A PCFG grammar. Code to print out a couple of sentence parses.**