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A graphical tool for exploring the regular expression based chunk
parser ``nltk.chunk.RegexpChunkParser``.
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A graphical tool for exploring the regular expression based chunk
parser ``nltk.chunk.RegexpChunkParser``.
See ``HELP`` for instructional text.
s Coordinating conjunctiont CCs Possessive pronouns PRP$s Cardinal numbert CDt Adverbt RBt
Determinert DTs Adverb, comparativet RBRs Existential theret EXs Adverb, superlativet RBSs Foreign wordt FWt Particlet RPt Adjectivet JJt tot TOs Adjective, comparativet JJRt Interjectiont UHs Adjective, superlativet JJSs Verb, base formt VBs List item markert LSs Verb, past tenset VBDt Modalt MDs Noun, pluralt NNSs Noun, singular or maspst NNs Verb, past participlet VBNs Verb,3rd ps. sing. presentt VBZs Proper noun, singulart NNPs Proper noun pluralt NNPSs
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Use this box ('Help') to learn more about the editor; click on the tabs for help on specific topics:
Rules: grammar rule types
Regexps: regular expression syntax
Tags: part of speech tags
Use the upper-left box ('Grammar') to edit your grammar. Each line of your grammar specifies a single 'rule', which performs an action such as creating a chunk or merging two chunks.
The lower-left box ('Development Set') runs your grammar on the development set, and displays the results. Your grammar's chunks are highlighted, and the correct (gold standard) chunks are underlined. If they match, they are displayed in green; otherwise, they are displayed in red. The box displays a single sentence from the development set at a time; use the scrollbar or the next/previous buttons view additional sentences.
The lower-right box ('Evaluation') tracks the performance of your grammar on the development set. The 'precision' axis indicates how many of your grammar's chunks are correct; and the 'recall' axis indicates how many of the gold standard chunks your system generated. Typically, you should try to design a grammar that scores high on both metrics. The exact precision and recall of the current grammar, as well as their harmonic mean (the 'f-score'), are displayed in the status bar at the bottom of the window.t Rulest 10s {...regexp...}
Chunk rule: creates new chunks from words matching regexp.
}...regexp...{
Chink rule: removes words matching regexp from existing chunks.
...regexp1...}{...regexp2...
Split rule: splits chunks that match regexp1 followed by regexp2 in two.
...regexp...{}...regexp...
Merge rule: joins consecutive chunks that match regexp1 and regexp2
t Regexpss 10 60sX Pattern Matches...
<T> a word with tag T (where T may be a regexp).
x? an optional x
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x* a sequence of 0 or more x's
x|y x or y
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(x) Treats x as a group
# x... Treats x... (to the end of the line) as a comment
\C matches character C (useful when C is a special character like + or #)
Examples:
Matches "cow/NN"
Matches "green/NN"
Matches "eating/VBG"
Matches "ate/VBD"
Matches "on/IN the/DT car/NN"
?
Matches "ran/VBD"
Matches "slowly/RB ate/VBD"
<\#> # This is a comment...
Matches "#/# 100/CD"
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:param devset_name: The name of the development set; used for
display & for save files. If either the name 'treebank'
or the name 'conll2000' is used, and devset is None, then
devset will be set automatically.
:param devset: A list of chunked sentences
:param grammar: The initial grammar to display.
:param tagset: Dictionary from tags to string descriptions, used
for the help page. Defaults to ``self.TAGSET``.
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Enter the Tkinter mainloop. This function must be called if
this demo is created from a non-interactive program (e.g.
from a secript); otherwise, the demo will close as soon as
the script completes.
N( R R t mainloop( Rs R t kwargs( ( s7 lib/python2.7/site-packages/nltk/app/chunkparser_app.pyR s ( RK RL s- Welcome to the regular expression chunk-parser grammar editor. You can use this editor to develop and test chunk parser grammars based on NLTK's RegexpChunkParser class.
Use this box ('Help') to learn more about the editor; click on the tabs for help on specific topics:
Rules: grammar rule types
Regexps: regular expression syntax
Tags: part of speech tags
Use the upper-left box ('Grammar') to edit your grammar. Each line of your grammar specifies a single 'rule', which performs an action such as creating a chunk or merging two chunks.
The lower-left box ('Development Set') runs your grammar on the development set, and displays the results. Your grammar's chunks are highlighted, and the correct (gold standard) chunks are underlined. If they match, they are displayed in green; otherwise, they are displayed in red. The box displays a single sentence from the development set at a time; use the scrollbar or the next/previous buttons view additional sentences.
The lower-right box ('Evaluation') tracks the performance of your grammar on the development set. The 'precision' axis indicates how many of your grammar's chunks are correct; and the 'recall' axis indicates how many of the gold standard chunks your system generated. Typically, you should try to design a grammar that scores high on both metrics. The exact precision and recall of the current grammar, as well as their harmonic mean (the 'f-score'), are displayed in the status bar at the bottom of the window.( RM RN s {...regexp...}
Chunk rule: creates new chunks from words matching regexp.
}...regexp...{
Chink rule: removes words matching regexp from existing chunks.
...regexp1...}{...regexp2...
Split rule: splits chunks that match regexp1 followed by regexp2 in two.
...regexp...{}...regexp...
Merge rule: joins consecutive chunks that match regexp1 and regexp2
( RO s 10 60sX Pattern Matches...
<T> a word with tag T (where T may be a regexp).
x? an optional x
x+ a sequence of 1 or more x's
x* a sequence of 0 or more x's
x|y x or y
. matches any character
(x) Treats x as a group
# x... Treats x... (to the end of the line) as a comment
\C matches character C (useful when C is a special character like + or #)
Examples:
Matches "cow/NN"
Matches "green/NN"
Matches "eating/VBG"
Matches "ate/VBD"
Matches "on/IN the/DT car/NN"
?
Matches "ran/VBD"
Matches "slowly/RB ate/VBD"
<\#> # This is a comment...
Matches "#/# 100/CD"
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