June 2009
Beginner to intermediate
504 pages
16h 27m
English
Content preview from Natural Language Processing with PythonBecome 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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Exercises
○ What constraints are required to correctly parse word sequences like I am happy and she is happy but not *you is happy or *they am happy? Implement two solutions for the present tense paradigm of the verb be in English, first taking Grammar Example 9-8 as your starting point, and then taking Grammar Example 9-22 as the starting point.
○ Develop a variant of grammar in Example 9-17 that uses a feature
COUNTto make the distinctions shown here:Example 9-60.
The boy sings.
*Boy sings.
Example 9-61.
The boys sing.
Boys sing.
Example 9-62.
The water is precious.
Water is precious.
○ Write a function
subsumes()that holds of two feature structuresfs1andfs2just in casefs1subsumesfs2.○ Modify the grammar illustrated in Example 9-32 to incorporate a
BARfeature for dealing with phrasal projections.○ Modify the German grammar in Example 9-59 to incorporate the treatment of subcategorization presented in Extending a Feature-Based Grammar.
Develop a feature-based grammar that will correctly describe
the following Spanish noun phrases:Example 9-63.
un
cuadro
hermos-o
INDEF.SG.MASC
picture
beautiful-SG.MASC
‘a beautiful picture’
Example 9-64.
un-os
cuadro-s
hermos-os
INDEF-PL.MASC
picture-PL
beautiful-PL.MASC
‘beautiful pictures’
Example 9-65.
un-a
cortina
hermos-a
INDEF-SG.FEM
curtain
beautiful-SG.FEM
‘a beautiful curtain’
Example 9-66.
un-as
cortina-s
hermos-as
INDEF-PL.FEM
curtain
beautiful-PL.FEM
‘beautiful ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.