def calcNodeDriftVector(self):
""" calculates the drift vector of a node.
"""
self.weightEstimate = 1.0
self.ratioW = self.weightEstimate/self.weight
# compute statistics delta vector.
# delta = (weight*localStatistics - weightEstimate*localEstimate -
# (weight - weightEstimate)*globalEstimate) / weight
self.cm.delta = VectorOps.multAndAdd(self.cm.localStatistics, \
self.weight, self.localEstimate)
VectorOps.multAndAddTo(self.cm.delta, self.ratioW-self.weight,\
self.cm.globalV)
# update drift vector
VectorOps.cpy(self.cm.drift, self.cm.globalV)
VectorOps.addTo(self.cm.drift, self.cm.delta)
VectorOps.multAndAddTo(self.cm.drift, 1.0/self.weight, self.cm.slack)
def testDeepCpy(self):
""" tests if new vector is really different """
self.cpy_vector = []
self.cpy_vector = VectorOps.cpy(self.cpy_vector, self.target)
# change the target vector a little
self.target = [1, 2, 1, 1, 1]
self.assertIsNot(self.cpy_vector, self.target)
def testDeepCpy(self):
""" tests if new vector is really different """
self.cpy_vector = []
self.cpy_vector = VectorOps.cpy(self.cpy_vector, self.target)
# change the target vector a little
self.target = [1, 2, 1, 1, 1]
self.assertIsNot(self.cpy_vector, self.target)
def calcNodeDriftVector(self):
""" calculates the drift vector of a node.
"""
self.weightEstimate = 1.0
self.ratioW = self.weightEstimate / self.weight
# compute statistics delta vector.
# delta = (weight*localStatistics - weightEstimate*localEstimate -
# (weight - weightEstimate)*globalEstimate) / weight
self.cm.delta = VectorOps.multAndAdd(self.cm.localStatistics, \
self.weight, self.localEstimate)
VectorOps.multAndAddTo(self.cm.delta, self.ratioW-self.weight,\
self.cm.globalV)
# update drift vector
VectorOps.cpy(self.cm.drift, self.cm.globalV)
VectorOps.addTo(self.cm.drift, self.cm.delta)
VectorOps.multAndAddTo(self.cm.drift, 1.0 / self.weight, self.cm.slack)
def testCpy(self):
""" tests if new vector has some value inside it. """
self.cpy_vector = []
self.cpy_vector = VectorOps.cpy(self.cpy_vector, self.target)
self.assertTrue(self.cpy_vector)
def testCpy(self):
""" tests if new vector has some value inside it. """
self.cpy_vector = []
self.cpy_vector = VectorOps.cpy(self.cpy_vector, self.target)
self.assertTrue(self.cpy_vector)
