def demo(
print_times=True,
print_grammar=False,
print_trees=True,
trace=2,
sent="I saw John with a dog with my cookie",
numparses=5,
):
"""
A demonstration of the Earley parsers.
"""
import sys
import time
from nltk.parse.chart import demo_grammar
# The grammar for ChartParser and SteppingChartParser:
grammar = demo_grammar()
if print_grammar:
print("* Grammar")
print(grammar)
# Tokenize the sample sentence.
print("* Sentence:")
print(sent)
tokens = sent.split()
print(tokens)
print()
# Do the parsing.
earley = EarleyChartParser(grammar, trace=trace)
t = perf_counter()
chart = earley.chart_parse(tokens)
parses = list(chart.parses(grammar.start()))
t = perf_counter() - t
# Print results.
if numparses:
assert len(parses) == numparses, "Not all parses found"
if print_trees:
for tree in parses:
print(tree)
else:
print("Nr trees:", len(parses))
if print_times:
print("Time:", t)
def demo(
print_times=True,
print_grammar=False,
print_trees=True,
trace=2,
sent='I saw John with a dog with my cookie',
numparses=5,
):
"""
A demonstration of the Earley parsers.
"""
import sys, time
from nltk.parse.chart import demo_grammar
# The grammar for ChartParser and SteppingChartParser:
grammar = demo_grammar()
if print_grammar:
print("* Grammar")
print(grammar)
# Tokenize the sample sentence.
print("* Sentence:")
print(sent)
tokens = sent.split()
print(tokens)
print()
# Do the parsing.
earley = EarleyChartParser(grammar, trace=trace)
t = time.clock()
chart = earley.chart_parse(tokens)
parses = list(chart.parses(grammar.start()))
t = time.clock() - t
# Print results.
if numparses:
assert len(parses) == numparses, 'Not all parses found'
if print_trees:
for tree in parses:
print(tree)
else:
print("Nr trees:", len(parses))
if print_times:
print("Time:", t)
def demo(should_print_times=True, should_print_grammar=False,
should_print_trees=True, trace=2,
sent='I saw John with a dog with my cookie', numparses=5):
"""
A demonstration of the Earley parsers.
"""
import sys, time
from nltk.parse.chart import demo_grammar
# The grammar for ChartParser and SteppingChartParser:
grammar = demo_grammar()
if should_print_grammar:
print "* Grammar"
print grammar
# Tokenize the sample sentence.
print "* Sentence:"
print sent
tokens = sent.split()
print tokens
print
# Do the parsing.
earley = EarleyChartParser(grammar, trace=trace)
t = time.clock()
chart = earley.chart_parse(tokens)
parses = chart.parses(grammar.start())
t = time.clock()-t
# Print results.
if numparses:
assert len(parses)==numparses, 'Not all parses found'
if should_print_trees:
for tree in parses: print tree
else:
print "Nr trees:", len(parses)
if should_print_times:
print "Time:", t
