March 2015
Beginner to intermediate
262 pages
5h 28m
English
Content preview from Natural Language Processing with JavaBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Understanding parse trees
Parse trees represent hierarchical relationships between elements of text. For example, a dependency tree shows the relationship between the grammatical elements of a sentence. Let's reconsider the following sentence:
The cow jumped over the moon.
A parse tree for the sentence is shown here. It was generated using the techniques found in Using the LexicalizedParser class later in this chapter:
(ROOT (S (NP (DT The) (NN cow)) (VP (VBD jumped) (PP (IN over) (NP (DT the) (NN moon)))) (. .)))
The sentence can be graphically depicted as shown in the following figure. It was generated using the application found at http://nlpviz.bpodgursky.com/home. Another editor that allows you to examine text in a graphical manner is ...
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