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1 Examples
2
Example 1
Project: golismero Source File: texttiling.py
def _identify_boundaries(self, depth_scores):
"""Identifies boundaries at the peaks of similarity score
differences"""
boundaries = [0 for x in depth_scores]
avg = sum(depth_scores)/len(depth_scores)
numpy.stdev = numpy.std(depth_scores)
if self.cutoff_policy == LC:
cutoff = avg-numpy.stdev/2.0
else:
cutoff = avg-numpy.stdev/2.0
depth_tuples = zip(depth_scores, range(len(depth_scores)))
depth_tuples.sort()
depth_tuples.reverse()
hp = filter(lambda x:x[0]>cutoff, depth_tuples)
for dt in hp:
boundaries[dt[1]] = 1
for dt2 in hp: #undo if there is a boundary close already
if dt[1] != dt2[1] and abs(dt2[1]-dt[1]) < 4 \
and boundaries[dt2[1]] == 1:
boundaries[dt[1]] = 0
return boundaries