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fix bugs of dot in python #463

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fix bugs of dot in python #463

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2 changes: 1 addition & 1 deletion python/pyspark/mllib/classification.py
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Original file line number Diff line number Diff line change
Expand Up @@ -154,7 +154,7 @@ def __init__(self, labels, pi, theta):

def predict(self, x):
"""Return the most likely class for a data vector x"""
return self.labels[numpy.argmax(self.pi + _dot(x, self.theta))]
return self.labels[numpy.argmax(self.pi + _dot(x, self.theta.transpose()))]

class NaiveBayes(object):
@classmethod
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8 changes: 4 additions & 4 deletions python/pyspark/mllib/tests.py
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Expand Up @@ -104,10 +104,10 @@ def test_clustering(self):
def test_classification(self):
from pyspark.mllib.classification import LogisticRegressionWithSGD, SVMWithSGD, NaiveBayes
data = [
LabeledPoint(0.0, [1, 0]),
LabeledPoint(1.0, [0, 1]),
LabeledPoint(0.0, [2, 0]),
LabeledPoint(1.0, [0, 2])
LabeledPoint(0.0, [1, 0, 0]),
LabeledPoint(1.0, [0, 1, 1]),
LabeledPoint(0.0, [2, 0, 0]),
LabeledPoint(1.0, [0, 2, 1])
]
rdd = self.sc.parallelize(data)
features = [p.features.tolist() for p in data]
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