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stats.py
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stats.py
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"""
Helper file that helps with computing some of the statistics.
Given a sample and the actual solution. Determine metrics
like number of cuts made, total number of cuts and total
number of true boundaries.
"""
def metrics(guess, actual):
"""
Get the actual and guess and use them to compute some
metrics including, number of cuts, correct cuts and
true boundaries.
Guess and actual have to be space-seperated strings
"""
guess = guess.split()
actual = actual.split()
correct = 0
curr = 0
for segment in guess:
if segment == guess[0]:
continue
for word in actual:
if word == actual[0]:
continue
if (segment[0] == word[0]) and (actual.index(word) > curr):
correct += 1
curr = actual.index(word)
return correct, len(guess), len(actual)
def compute_stats(cuts, correct_cuts, true_boundaries):
"""
Compute precision and recall and return those metrics
"""
if cuts == 0:
precision = 0
else:
precision = float(correct_cuts)/cuts
recall = float(correct_cuts)/true_boundaries
f = precision*recall
return precision, recall, f