nltk.app.chunkparser_app.RegexpChunkApp

class documentation

class RegexpChunkApp(object): (source)

Constructor: RegexpChunkApp(devset_name, devset, grammar, chunk_label, tagset)

A graphical tool for exploring the regular expression based chunk parser nltk.chunk.RegexpChunkParser.

See HELP for instructional text.

Method	`__init__`	No summary
Method	`about`	Undocumented
Method	`destroy`	Undocumented
Method	`load_grammar`	Undocumented
Method	`mainloop`	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.
Method	`normalize_grammar`	Undocumented
Method	`reset`	Undocumented
Method	`resize`	Undocumented
Method	`save_grammar`	Undocumented
Method	`save_history`	Undocumented
Method	`set_devset_size`	Undocumented
Method	`show_devset`	Undocumented
Method	`show_help`	Undocumented
Method	`show_trace`	Undocumented
Method	`toggle_show_trace`	Undocumented
Method	`update`	Undocumented
Constant	`HELP`	Undocumented
Constant	`HELP_AUTOTAG`	Undocumented
Constant	`SAVE_GRAMMAR_TEMPLATE`	Undocumented
Constant	`TAGSET`	Undocumented
Instance Variable	`charnum`	Undocumented
Instance Variable	`chunker`	The chunker built from the grammar string
Instance Variable	`devset`	The development set -- a list of chunked sentences.
Instance Variable	`devset_button`	Undocumented
Instance Variable	`devset_index`	The index into the development set of the first instance that's currently being viewed.
Instance Variable	`devset_name`	The name of the development set (for save files).
Instance Variable	`devset_scroll`	Undocumented
Instance Variable	`devset_xscroll`	Undocumented
Instance Variable	`devsetbox`	Undocumented
Instance Variable	`devsetlabel`	Undocumented
Instance Variable	`evalbox`	Undocumented
Instance Variable	`grammar`	The unparsed grammar string
Instance Variable	`grammar_changed`	The last time() that the grammar was changed.
Instance Variable	`grammarbox`	Undocumented
Instance Variable	`grammarlabel`	Undocumented
Instance Variable	`helpbox`	Undocumented
Instance Variable	`helptabs`	Undocumented
Instance Variable	`linenum`	Undocumented
Instance Variable	`normalized_grammar`	A normalized version of `self.grammar`.
Instance Variable	`status`	Undocumented
Instance Variable	`tagset`	Undocumented
Instance Variable	`top`	Undocumented
Instance Variable	`trace_button`	Undocumented
Method	`_adaptively_modify_eval_chunk`	Modify _EVAL_CHUNK to try to keep the amount of time that the eval demon takes between _EVAL_DEMON_MIN and _EVAL_DEMON_MAX.
Method	`_chunkparse`	Undocumented
Method	`_chunks`	Undocumented
Method	`_color_chunk`	Undocumented
Method	`_devset_next`	Undocumented
Method	`_devset_prev`	Undocumented
Method	`_devset_scroll`	Undocumented
Method	`_eval_demon`	Undocumented
Method	`_eval_plot`	Undocumented
Method	`_grammarcheck`	Undocumented
Method	`_highlight_devset`	Undocumented
Method	`_history_next`	Undocumented
Method	`_history_prev`	Undocumented
Method	`_init_bindings`	Undocumented
Method	`_init_fonts`	Undocumented
Method	`_init_menubar`	Undocumented
Method	`_init_widgets`	Undocumented
Method	`_syntax_highlight_grammar`	Undocumented
Method	`_view_history`	Undocumented
Constant	`_BUTTON_PARAMS`	Undocumented
Constant	`_DEVSETBOX_PARAMS`	Undocumented
Constant	`_DRAW_LINES`	Undocumented
Constant	`_EVAL_DELAY`	If the user has not pressed any key for this amount of time (in seconds), and the current grammar has not been evaluated, then the eval demon will evaluate it.
Constant	`_EVAL_DEMON_MAX`	The maximum amount of time that the eval demon should take each time it runs -- if it takes more than this time, _EVAL_CHUNK will be modified downwards.
Constant	`_EVAL_DEMON_MIN`	The minimum amount of time that the eval demon should take each time it runs -- if it takes less than this time, _EVAL_CHUNK will be modified upwards.
Constant	`_EVAL_FREQ`	The frequency (in seconds) at which the eval demon is run
Constant	`_EVALBOX_PARAMS`	Undocumented
Constant	`_FONT_PARAMS`	Undocumented
Constant	`_FRAME_PARAMS`	Undocumented
Constant	`_GRAMMARBOX_PARAMS`	Undocumented
Constant	`_HELPBOX_PARAMS`	Undocumented
Constant	`_HELPTAB_BG_COLOR`	Undocumented
Constant	`_HELPTAB_BG_PARAMS`	Undocumented
Constant	`_HELPTAB_FG_COLOR`	Undocumented
Constant	`_HELPTAB_FG_PARAMS`	Undocumented
Constant	`_HELPTAB_SPACER`	Undocumented
Constant	`_SCALE_N`	Undocumented
Constant	`_STATUS_PARAMS`	Undocumented
Instance Variable	`_autoscale`	Undocumented
Instance Variable	`_chunk_label`	Undocumented
Instance Variable	`_devset_size`	Undocumented
Instance Variable	`_EVAL_CHUNK`	The number of sentences that should be evaluated by the eval demon each time it runs.
Instance Variable	`_eval_demon_running`	Undocumented
Instance Variable	`_eval_grammar`	The grammar that is being currently evaluated by the eval demon.
Instance Variable	`_eval_index`	The index of the next sentence in the development set that should be looked at by the eval demon.
Instance Variable	`_eval_lines`	Undocumented
Instance Variable	`_eval_normalized_grammar`	A normalized copy of `_eval_grammar`.
Instance Variable	`_eval_score`	The `ChunkScore` object that's used to keep track of the score of the current grammar on the development set.
Instance Variable	`_font`	Undocumented
Instance Variable	`_grammarcheck_errs`	Undocumented
Instance Variable	`_history`	A list of (grammar, precision, recall, fscore) tuples for grammars that the user has already tried.
Instance Variable	`_history_index`	When the user is scrolling through previous grammars, this is used to keep track of which grammar they're looking at.
Instance Variable	`_last_keypress`	The time() when a key was most recently pressed
Instance Variable	`_showing_trace`	Undocumented
Instance Variable	`_size`	Undocumented
Instance Variable	`_smallfont`	Undocumented

def __init__(self, devset_name='conll2000', devset=None, grammar='', chunk_label='NP', tagset=None): (source) ¶

Parameters
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.
devset	A list of chunked sentences
grammar	The initial grammar to display.
chunk_label	Undocumented
tagset	Dictionary from tags to string descriptions, used for the help page. Defaults to `self.TAGSET`.

def about(self, *e): (source) ¶

Undocumented

def destroy(self, *e): (source) ¶

Undocumented

def load_grammar(self, filename=None): (source) ¶

Undocumented

def mainloop(self, *args, **kwargs): (source) ¶

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.

def normalize_grammar(self, grammar): (source) ¶

Undocumented

def reset(self): (source) ¶

Undocumented

def resize(self, size=None): (source) ¶

Undocumented

def save_grammar(self, filename=None): (source) ¶

Undocumented

def save_history(self, filename=None): (source) ¶

Undocumented

def set_devset_size(self, size=None): (source) ¶

Undocumented

def show_devset(self, index=None): (source) ¶

Undocumented

def show_help(self, tab): (source) ¶

Undocumented

def show_trace(self, *e): (source) ¶

Undocumented

def toggle_show_trace(self, *e): (source) ¶

Undocumented

def update(self, *event): (source) ¶

Undocumented

HELP = (source) ¶

Undocumented

Value

[('Help',
  '20',
  '''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 RegexpCh↵
unkParser class.

Use this box (\'Help\') to learn more about the editor; click on the tabs for he↵
...

HELP_AUTOTAG = (source) ¶

Undocumented

Value

[('red', dict(foreground='#a00')),
 ('green', dict(foreground='#080')),
 ('highlight', dict(background='#ddd')),
 ('underline', dict(underline=True)),
 ('h1', dict(underline=True)),
 ('indent', dict(lmargin1=20, lmargin2=20)),
 ('hangindent', dict(lmargin1=0, lmargin2=60)),
...

SAVE_GRAMMAR_TEMPLATE: str = (source) ¶

Undocumented

Value

'''# Regexp Chunk Parsing Grammar
# Saved %(date)s
#
# Development set: %(devset)s
#   Precision: %(precision)s
#   Recall:    %(recall)s
#   F-score:   %(fscore)s
...

TAGSET: dict[str, str] = (source) ¶

Undocumented

Value

{'CC': 'Coordinating conjunction',
 'PRP$': 'Possessive pronoun',
 'CD': 'Cardinal number',
 'RB': 'Adverb',
 'DT': 'Determiner',
 'RBR': 'Adverb, comparative',
 'EX': 'Existential there',
...

charnum: dict = (source) ¶

Undocumented

chunker = (source) ¶

The chunker built from the grammar string

devset = (source) ¶

The development set -- a list of chunked sentences.

devset_button = (source) ¶

Undocumented

devset_index = (source) ¶

The index into the development set of the first instance that's currently being viewed.

devset_name = (source) ¶

The name of the development set (for save files).

devset_scroll = (source) ¶

Undocumented

devset_xscroll = (source) ¶

Undocumented

devsetbox = (source) ¶

Undocumented

devsetlabel = (source) ¶

Undocumented

evalbox = (source) ¶

Undocumented

grammar = (source) ¶

The unparsed grammar string

grammar_changed: int = (source) ¶

The last time() that the grammar was changed.

grammarbox = (source) ¶

Undocumented

grammarlabel = (source) ¶

Undocumented

helpbox = (source) ¶

Undocumented

helptabs: dict = (source) ¶

Undocumented

linenum: dict[int, int] = (source) ¶

Undocumented

normalized_grammar = (source) ¶

A normalized version of self.grammar.

status = (source) ¶

Undocumented

tagset = (source) ¶

Undocumented

top = (source) ¶

Undocumented

trace_button = (source) ¶

Undocumented

def _adaptively_modify_eval_chunk(self, t): (source) ¶

Modify _EVAL_CHUNK to try to keep the amount of time that the eval demon takes between _EVAL_DEMON_MIN and _EVAL_DEMON_MAX.

Parameters
t	The amount of time that the eval demon took.

def _chunkparse(self, words): (source) ¶

Undocumented

def _chunks(self, tree): (source) ¶

Undocumented

def _color_chunk(self, sentnum, chunk, tag): (source) ¶

Undocumented

def _devset_next(self, *e): (source) ¶

Undocumented

def _devset_prev(self, *e): (source) ¶

Undocumented

def _devset_scroll(self, command, *args): (source) ¶

Undocumented

def _eval_demon(self): (source) ¶

Undocumented

def _eval_plot(self, *e, **config): (source) ¶

Undocumented

def _grammarcheck(self, grammar): (source) ¶

Undocumented

def _highlight_devset(self, sample=None): (source) ¶

Undocumented

def _history_next(self, *e): (source) ¶

Undocumented

def _history_prev(self, *e): (source) ¶

Undocumented

def _init_bindings(self, top): (source) ¶

Undocumented

def _init_fonts(self, top): (source) ¶

Undocumented

def _init_menubar(self, parent): (source) ¶

Undocumented

def _init_widgets(self, top): (source) ¶

Undocumented

def _syntax_highlight_grammar(self, grammar): (source) ¶

Undocumented

def _view_history(self, index): (source) ¶

Undocumented

_BUTTON_PARAMS = (source) ¶

Undocumented

Value

dict(background='#777', activebackground='#777', highlightbackground='#777')

_DEVSETBOX_PARAMS = (source) ¶

Undocumented

Value

dict(width=70,
     height=10,
     background='#eef',
     highlightbackground='#eef',
     highlightthickness=1,
     relief='groove',
     border=2,
...

_DRAW_LINES: bool = (source) ¶

Undocumented

Value

False

_EVAL_DELAY: int = (source) ¶

If the user has not pressed any key for this amount of time (in seconds), and the current grammar has not been evaluated, then the eval demon will evaluate it.

Value

_EVAL_DEMON_MAX: float = (source) ¶

The maximum amount of time that the eval demon should take each time it runs -- if it takes more than this time, _EVAL_CHUNK will be modified downwards.

Value

0.04

_EVAL_DEMON_MIN: float = (source) ¶

The minimum amount of time that the eval demon should take each time it runs -- if it takes less than this time, _EVAL_CHUNK will be modified upwards.

Value

0.02

_EVAL_FREQ: float = (source) ¶

The frequency (in seconds) at which the eval demon is run

Value

0.2

_EVALBOX_PARAMS = (source) ¶

Undocumented

Value

dict(background='#eef',
     highlightbackground='#eef',
     highlightthickness=1,
     relief='groove',
     border=2,
     width=300,
     height=280)

_FONT_PARAMS = (source) ¶

Undocumented

Value

dict(family='helvetica', size=(-20))

_FRAME_PARAMS = (source) ¶

Undocumented

Value

dict(background='#777', padx=2, pady=2, border=3)

_GRAMMARBOX_PARAMS = (source) ¶

Undocumented

Value

dict(width=40,
     height=12,
     background='#efe',
     highlightbackground='#efe',
     highlightthickness=1,
     relief='groove',
     border=2,
...

_HELPBOX_PARAMS = (source) ¶

Undocumented

Value

dict(width=15,
     height=15,
     background='#efe',
     highlightbackground='#efe',
     foreground='#555',
     highlightthickness=1,
     relief='groove',
...

_HELPTAB_BG_COLOR: str = (source) ¶

Undocumented

Value

'#aba'

_HELPTAB_BG_PARAMS = (source) ¶

Undocumented

Value

dict(background='#aba')

_HELPTAB_FG_COLOR: str = (source) ¶

Undocumented

Value

'#efe'

_HELPTAB_FG_PARAMS = (source) ¶

Undocumented

Value

dict(background='#efe')

_HELPTAB_SPACER: int = (source) ¶

Undocumented

Value

_SCALE_N: int = (source) ¶

Undocumented

Value

_STATUS_PARAMS = (source) ¶

Undocumented

Value

dict(background='#9bb', relief='groove', border=2)

_autoscale = (source) ¶

Undocumented

_chunk_label = (source) ¶

Undocumented

_devset_size = (source) ¶

Undocumented

_EVAL_CHUNK = (source) ¶

The number of sentences that should be evaluated by the eval demon each time it runs.

_eval_demon_running: bool = (source) ¶

Undocumented

_eval_grammar = (source) ¶

The grammar that is being currently evaluated by the eval demon.

_eval_index: int = (source) ¶

The index of the next sentence in the development set that should be looked at by the eval demon.

_eval_lines = (source) ¶

Undocumented

_eval_normalized_grammar = (source) ¶

A normalized copy of _eval_grammar.

_eval_score = (source) ¶

The ChunkScore object that's used to keep track of the score of the current grammar on the development set.

_font = (source) ¶

Undocumented

_grammarcheck_errs: list = (source) ¶

Undocumented

_history: list = (source) ¶

A list of (grammar, precision, recall, fscore) tuples for grammars that the user has already tried.

_history_index: int = (source) ¶

When the user is scrolling through previous grammars, this is used to keep track of which grammar they're looking at.

_last_keypress = (source) ¶

The time() when a key was most recently pressed

_showing_trace: bool = (source) ¶

Undocumented

_size = (source) ¶

Undocumented

_smallfont = (source) ¶

Undocumented