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Added DataSet Functions #333

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Merged
merged 2 commits into from
Mar 18, 2017
Merged

Added DataSet Functions #333

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ba7ee78
Update learning.py
antmarakis Mar 7, 2017
2404824
Added remove_examples function
antmarakis Mar 9, 2017
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12 changes: 12 additions & 0 deletions learning.py
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Original file line number Diff line number Diff line change
Expand Up @@ -152,6 +152,18 @@ def sanitize(self, example):
return [attr_i if i in self.inputs else None
for i, attr_i in enumerate(example)]

def classes_to_numbers(self,classes=None):
"""Converts class names to numbers."""
if not classes:
# If classes were not given, extract them from values
classes = sorted(self.values[self.target])
for item in self.examples:
item[self.target] = classes.index(item[self.target])

def remove_examples(self,value=""):
"""Remove examples that contain given value."""
self.examples = [x for x in self.examples if value not in x]

def __repr__(self):
return '<DataSet({}): {:d} examples, {:d} attributes>'.format(
self.name, len(self.examples), len(self.attrs))
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