def testtemplate(self):
X = nr.randn(10,2)
A = np.vstack(( np.ones((7,2)), np.zeros((3,2)) ))
X = X + 3*A
C,L,J = fc.cmeans(X,2)
L = np.array([0,0,0,0,0,1,1,1,1,1])
C,L,J = fc.cmeans(X,2,L)
self.assert_(np.mean(L[:7])<0.5)
def testcmeans1(self):
X = nr.randn(10,2)
A = np.concatenate([np.ones((7,2)),np.zeros((3,2))])
X = X+3*A;
C,L,J = fc.cmeans(X,2)
L = np.array([0,0,0,0,0,1,1,1,1,1])
C,L,J = fc.cmeans(X,2,L)
self.assert_(np.mean(L[:7])<0.5)
def testcmeans2(self):
X = nr.randn(10000,2)
A = np.concatenate([np.ones((7000,2)),np.zeros((3000,2))])
X = X+3*A
L = np.concatenate([np.ones(5000), np.zeros(5000)]).astype(np.int)
C,L,J = fc.cmeans(X,2,L)
l = L[:7000].astype(np.float)
self.assert_(np.mean(l)>0.9)
def testvarious(self):
import sys
import weakref
Y = nr.randn(20,2)
X = Y[::2, :]
del Y
self.assert_(X.flags['CONTIGUOUS'] == False)
A = np.vstack(( np.ones((7,2)), np.zeros((3,2)) ))
X = X + 3*A
wX = weakref.ref(X)
print sys.getrefcount(X)
self.assert_(sys.getrefcount(X) <4)
# fixme : Previsously, the good answer was supposed to be "2";
# It is unclear to me (b. thirion) what it should be exactly
L1 = np.array([0,0,0,0,0,1,1,1,1,1])
C,L,J = fc.cmeans(X,2,L1)
self.assert_(id(L1) != id(L))
C,L,J = fc.cmeans(X,2,L)
del X
self.assert_(wX() == None)
