本文整理汇总了Python中pysgpp.DataVector.__len__方法的典型用法代码示例。如果您正苦于以下问题：Python DataVector.__len__方法的具体用法？Python DataVector.__len__怎么用？Python DataVector.__len__使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类pysgpp.DataVector的用法示例。
在下文中一共展示了DataVector.__len__方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: TestWeightedRefinementOperator
# 需要导入模块: from pysgpp import DataVector [as 别名]
# 或者: from pysgpp.DataVector import __len__ [as 别名]
class TestWeightedRefinementOperator(unittest.TestCase):
def setUp(self):
#
# Grid
#
DIM = 2
LEVEL = 2
self.grid = Grid.createLinearGrid(DIM)
self.grid_gen = self.grid.createGridGenerator()
self.grid_gen.regular(LEVEL)
#
# trainData, classes, errors
#
xs = []
DELTA = 0.05
DELTA_RECI = int(1/DELTA)
for i in xrange(DELTA_RECI):
for j in xrange(DELTA_RECI):
xs.append([DELTA*i, DELTA*j])
random.seed(1208813)
ys = [ random.randint(-10, 10) for i in xrange(DELTA_RECI**2)]
# print xs
# print ys
self.trainData = DataMatrix(xs)
self.classes = DataVector(ys)
self.alpha = DataVector([3, 6, 7, 9, -1])
self.errors = DataVector(DELTA_RECI**2)
coord = DataVector(DIM)
for i in xrange(self.trainData.getNrows()):
self.trainData.getRow(i, coord)
self.errors.__setitem__ (i, self.classes[i] - self.grid.eval(self.alpha, coord))
#print "Errors:"
#print self.errors
#
# Functor
#
self.functor = WeightedErrorRefinementFunctor(self.alpha, self.grid)
self.functor.setTrainDataset(self.trainData)
self.functor.setClasses(self.classes)
self.functor.setErrors(self.errors)
def test_1(self):
storage = self.grid.getStorage()
coord = DataVector(storage.dim())
num_coeff = self.alpha.__len__()
values = [self.functor.__call__(storage,i) for i in xrange(storage.size())]
expect = []
for i in xrange(num_coeff):
# print i
val = 0
single = DataVector(num_coeff)
single.__setitem__(i, self.alpha.__getitem__(i))
for j in xrange(self.trainData.getNrows()):
self.trainData.getRow(j, coord)
val += abs( self.grid.eval(single, coord) * (self.errors.__getitem__(j)**2) )
expect.append(val)
# print values
# print expect
# print [ values[i]/expect[i] for i in xrange(values.__len__())]
self.assertEqual(values, expect)