def testResolution(self):
p = ScalarEncoderParameters()
p.activeBits = 10
p.minimum = 0
p.maximum = 100
p.resolution = .5
enc = ScalarEncoder(p)
sdr1 = SDR(enc.parameters.size)
sdr2 = SDR(enc.parameters.size)
enc.encode(.0, sdr1)
enc.encode(.1, sdr2)
assert (sdr1 == sdr2)
enc.encode(.0, sdr1)
enc.encode(.6, sdr2)
assert (sdr1.getOverlap(sdr2) == 9)
enc.encode(70, sdr1)
enc.encode(72.5, sdr2)
assert (sdr1.getOverlap(sdr2) == 5)
enc.encode(70, sdr1)
enc.encode(75, sdr2)
assert (sdr1.getOverlap(sdr2) == 0)
enc.encode(60, sdr1)
enc.encode(80, sdr2)
assert (sdr1.getOverlap(sdr2) == 0)
def testRadius(self):
p = ScalarEncoderParameters()
p.activeBits = 10
p.minimum = 0
p.maximum = 100
p.radius = 10
enc = ScalarEncoder(p)
sdr1 = SDR(enc.parameters.size)
sdr2 = SDR(enc.parameters.size)
enc.encode(77, sdr1)
enc.encode(77, sdr2)
assert (sdr1.getOverlap(sdr2) == 10)
enc.encode(0, sdr1)
enc.encode(1, sdr2)
assert (sdr1.getOverlap(sdr2) == 9)
enc.encode(60, sdr1)
enc.encode(69, sdr2)
assert (sdr1.getOverlap(sdr2) == 1)
enc.encode(45, sdr1)
enc.encode(55, sdr2)
assert (sdr1.getOverlap(sdr2) == 0)
def testGetOverlap(self):
A = SDR((103, ))
B = SDR((103, ))
assert (A.getOverlap(B) == 0)
A.dense[:10] = 1
B.dense[:20] = 1
A.dense = A.dense
B.dense = B.dense
assert (A.getOverlap(B) == 10)
A.dense[:20] = 1
A.dense = A.dense
assert (A.getOverlap(B) == 20)
A.dense[50:60] = 1
B.dense[0] = 0
A.dense = A.dense
B.dense = B.dense
assert (A.getOverlap(B) == 19)
# Test wrong dimensions
C = SDR((1, 1, 1, 1, 103))
C.randomize(.5)
try:
A.getOverlap(C)
except RuntimeError:
pass
else:
self.fail()
def testAddNoise(self):
A = SDR((103, ))
B = SDR((103, ))
A.randomize(.1)
B.setSDR(A)
A.addNoise(.5)
assert (A.getOverlap(B) == 5)
A.randomize(.3, 42)
B.randomize(.3, 42)
A.addNoise(.5)
B.addNoise(.5)
assert (A != B)
A.randomize(.3, 42)
B.randomize(.3, 42)
A.addNoise(.5, 42)
B.addNoise(.5, 42)
assert (A == B)