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Update decision_tree.py #5

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Update decision_tree.py #5

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4 changes: 2 additions & 2 deletions decision_tree/decision_tree.py
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Original file line number Diff line number Diff line change
Expand Up @@ -72,7 +72,7 @@ def calc_ent(x):
calculate shanno ent of x
"""

x_value_list = set([x[i] for i in range(x.shape[0])])
x_value_list = set(x)
ent = 0.0
for x_value in x_value_list:
p = float(x[x == x_value].shape[0]) / x.shape[0]
Expand All @@ -87,7 +87,7 @@ def calc_condition_ent(x, y):
"""

# calc ent(y|x)
x_value_list = set([x[i] for i in range(x.shape[0])])
x_value_list = set(x)
ent = 0.0
for x_value in x_value_list:
sub_y = y[x == x_value]
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