示例#1
0
    def test_deepcopy_trust_input(self):
        a = tt.dscalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.dscalars("xs")

        f = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x, mutable=True),
            ],
            s + a * x,
        )
        f.trust_input = True
        try:
            g = copy.deepcopy(f)
        except NotImplementedError as e:
            if e[0].startswith("DebugMode is not picklable"):
                return
            else:
                raise
        assert f.trust_input is g.trust_input
        f(np.asarray(2.0))
        with pytest.raises(
            (ValueError, AttributeError, theano.compile.debugmode.InvalidValueError)
        ):
            f(2.0)
        g(np.asarray(2.0))
        with pytest.raises(
            (ValueError, AttributeError, theano.compile.debugmode.InvalidValueError)
        ):
            g(2.0)
示例#2
0
    def test_multiple_functions(self):
        a = T.scalar()  # the a is for 'anonymous' (un-named).
        x, s = T.scalars('xs')
        v = T.vector('v')

        # put in some inputs
        list_of_things = [s, x, v]

        # some derived thing, whose inputs aren't all in the list
        list_of_things.append(a * x + s )

        f1 = function([x, In(a, value=1.0, name='a'), In(s, value=0.0, update=s+a*x, mutable=True)], s+a*x)
        list_of_things.append(f1)

        # now put in a function sharing container with the previous one
        f2 = function([x, In(a, value=1.0, name='a'), In(s, value=f1.container[s], update=s+a*x, mutable=True)], s+a*x)
        list_of_things.append(f2)

        assert isinstance(f2.container[s].storage, list)
        assert f2.container[s].storage is f1.container[s].storage

        # now put in a function with non-scalar
        v_value = numpy.asarray([2, 3, 4.], dtype=config.floatX)
        f3 = function([x, In(v, value=v_value)], x+v)
        list_of_things.append(f3)

        # try to pickle the entire things
        try:
            saved_format = cPickle.dumps(list_of_things, protocol=-1)
            new_list_of_things = cPickle.loads(saved_format)
        except NotImplementedError, e:
            if e[0].startswith('DebugMode is not picklable'):
                return
            else:
                raise
示例#3
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    def test_param_allow_downcast_int(self):
        a = tensor.wvector("a")  # int16
        b = tensor.bvector("b")  # int8
        c = tensor.bscalar("c")  # int8
        f = pfunc(
            [
                In(a, allow_downcast=True),
                In(b, allow_downcast=False),
                In(c, allow_downcast=None),
            ],
            (a + b + c),
        )

        # Both values are in range. Since they're not ndarrays (but lists),
        # they will be converted, and their value checked.
        assert np.all(f([3], [6], 1) == 10)

        # Values are in range, but a dtype too large has explicitly been given
        # For performance reasons, no check of the data is explicitly performed
        # (It might be OK to change this in the future.)
        with pytest.raises(TypeError):
            f([3], np.array([6], dtype="int16"), 1)

        # Value too big for a, silently ignored
        assert np.all(f([2**20], np.ones(1, dtype="int8"), 1) == 2)

        # Value too big for b, raises TypeError
        with pytest.raises(TypeError):
            f([3], [312], 1)

        # Value too big for c, raises TypeError
        with pytest.raises(TypeError):
            f([3], [6], 806)
示例#4
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    def test_shared_state2(self):
        a = tt.scalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.scalars("xs")

        f = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x, mutable=False),
            ],
            s + a * x,
        )
        g = function(
            [x, In(a, value=1.0, name="a"), In(s, value=f.container[s])], s + a * x
        )

        f(1, 2)
        assert f[s] == 2
        assert g[s] == 2
        f(1, 2)
        assert f[s] == 4
        assert g[s] == 4
        g(1, 2)  # has no effect on state
        assert f[s] == 4
        assert g[s] == 4
示例#5
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    def test_param_allow_downcast_floatX(self):
        a = tensor.fscalar("a")
        b = tensor.fscalar("b")
        c = tensor.fscalar("c")

        f = pfunc(
            [
                In(a, allow_downcast=True),
                In(b, allow_downcast=False),
                In(c, allow_downcast=None),
            ],
            (a + b + c),
        )

        # If the values can be accurately represented, everything is OK
        assert np.all(f(0, 0, 0) == 0)

        # If allow_downcast is True, idem
        assert np.allclose(f(0.1, 0, 0), 0.1)

        # If allow_downcast is False, nope
        with pytest.raises(TypeError):
            f(0, 0.1, 0)

        # If allow_downcast is None, it should work iff floatX=float32
        if config.floatX == "float32":
            assert np.allclose(f(0, 0, 0.1), 0.1)
        else:
            with pytest.raises(TypeError):
                f(0, 0, 0.1)
示例#6
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    def test_copy(self):
        a = tt.scalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.scalars("xs")

        f = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x, mutable=True),
            ],
            s + a * x,
        )

        g = copy.copy(f)
        # if they both return, assume  that they return equivalent things.

        assert g.container[x].storage is not f.container[x].storage
        assert g.container[a].storage is not f.container[a].storage
        assert g.container[s].storage is not f.container[s].storage

        assert g.value[a] is f.value[a]  # should not have been copied
        assert (
            g.value[s] is not f.value[s]
        )  # should have been copied because it is mutable.
        assert not (g.value[s] != f.value[s]).any()  # its contents should be identical

        assert f(2, 1) == g(
            2
        )  # they should be in sync, default value should be copied.
        assert f(2, 1) == g(
            2
        )  # they should be in sync, default value should be copied.
        f(1, 2)  # put them out of sync
        assert f(1, 2) != g(1, 2)  # they should not be equal anymore.
示例#7
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    def test_shared_state0(self):
        a = tt.scalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.scalars("xs")

        f = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x, mutable=True),
            ],
            s + a * x,
        )
        g = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=f.container[s], update=s - a * x, mutable=True),
            ],
            s + a * x,
        )

        f(1, 2)
        assert f[s] == 2
        assert g[s] == 2
        g(1, 2)
        assert f[s] == 0
        assert g[s] == 0
示例#8
0
    def __init__(self):
        a = tt.scalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.scalars("xs")
        v = tt.vector("v")

        self.s = s
        self.x = x
        self.v = v

        self.e = a * x + s

        self.f1 = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x, mutable=True),
            ],
            s + a * x,
        )

        self.f2 = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=self.f1.container[s], update=s + a * x, mutable=True),
            ],
            s + a * x,
        )
示例#9
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    def test_param_allow_downcast_vector_floatX(self):
        a = tensor.fvector("a")
        b = tensor.fvector("b")
        c = tensor.fvector("c")

        f = pfunc(
            [
                In(a, allow_downcast=True),
                In(b, allow_downcast=False),
                In(c, allow_downcast=None),
            ],
            (a + b + c),
        )

        # If the values can be accurately represented, everything is OK
        z = [0]
        assert np.all(f(z, z, z) == 0)

        # If allow_downcast is True, idem
        assert np.allclose(f([0.1], z, z), 0.1)

        # If allow_downcast is False, nope
        with pytest.raises(TypeError):
            f(z, [0.1], z)

        # If allow_downcast is None, like False
        with pytest.raises(TypeError):
            f(z, z, [0.1])
示例#10
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    def test_pickle(self):
        a = T.scalar()  # the a is for 'anonymous' (un-named).
        x, s = T.scalars('xs')

        f = function([x, In(a, value=1.0, name='a'),
                      In(s, value=0.0, update=s + a * x, mutable=True)], s + a * x)

        try:
            # Note that here we also test protocol 0 on purpose, since it
            # should work (even though one should not use it).
            g = pickle.loads(pickle.dumps(f, protocol=0))
            g = pickle.loads(pickle.dumps(f, protocol=-1))
        except NotImplementedError as e:
            if e[0].startswith('DebugMode is not picklable'):
                return
            else:
                raise
        # if they both return, assume  that they return equivalent things.
        # print [(k,id(k)) for k in f.finder.keys()]
        # print [(k,id(k)) for k in g.finder.keys()]

        self.assertFalse(g.container[0].storage is f.container[0].storage)
        self.assertFalse(g.container[1].storage is f.container[1].storage)
        self.assertFalse(g.container[2].storage is f.container[2].storage)
        self.assertFalse(x in g.container)
        self.assertFalse(x in g.value)

        self.assertFalse(g.value[1] is f.value[1])  # should not have been copied
        self.assertFalse(g.value[2] is f.value[2])  # should have been copied because it is mutable.
        self.assertFalse((g.value[2] != f.value[2]).any())  # its contents should be identical

        self.assertTrue(f(2, 1) == g(2))  # they should be in sync, default value should be copied.
        self.assertTrue(f(2, 1) == g(2))  # they should be in sync, default value should be copied.
        f(1, 2)  # put them out of sync
        self.assertFalse(f(1, 2) == g(1, 2))  # they should not be equal anymore.
示例#11
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    def test_state_access(self):
        a = tt.scalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.scalars("xs")

        f = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x)
            ],
            s + a * x,
        )

        assert f[a] == 1.0
        assert f[s] == 0.0

        assert f(3.0) == 3.0
        assert f(3.0, a=2.0) == 9.0  # 3.0 + 2*3.0

        assert (
            f[a] == 1.0
        )  # state hasn't changed permanently, we just overrode it last line
        assert f[s] == 9.0

        f[a] = 5.0
        assert f[a] == 5.0
        assert f(3.0) == 24.0  # 9 + 3*5
        assert f[s] == 24.0
    def test_state_access(self):
        a = T.scalar()  # the a is for 'anonymous' (un-named).
        x, s = T.scalars('xs')

        f = function([
            x,
            In(a, value=1.0, name='a'),
            In(s, value=0.0, update=s + a * x)
        ], s + a * x)

        self.assertTrue(f[a] == 1.0)
        self.assertTrue(f[s] == 0.0)

        self.assertTrue(f(3.0) == 3.0)
        self.assertTrue(f(3.0, a=2.0) == 9.0)  # 3.0 + 2*3.0

        self.assertTrue(
            f[a] == 1.0
        )  # state hasn't changed permanently, we just overrode it last line
        self.assertTrue(f[s] == 9.0)

        f[a] = 5.0
        self.assertTrue(f[a] == 5.0)
        self.assertTrue(f(3.0) == 24.0)  # 9 + 3*5
        self.assertTrue(f[s] == 24.0)
 def t():
     f = function([
         In(a, name=set(['adsf', ()]), value=1.0),
         In(x, name=(), value=2.0),
         In(s, name=T.scalar(), value=3.0)
     ], a + x + s)
     return f
    def test_copy(self):
        a = T.scalar()  # the a is for 'anonymous' (un-named).
        x, s = T.scalars('xs')

        f = function([
            x,
            In(a, value=1.0, name='a'),
            In(s, value=0.0, update=s + a * x, mutable=True)
        ], s + a * x)

        g = copy.copy(f)
        # if they both return, assume  that they return equivalent things.

        self.assertFalse(g.container[x].storage is f.container[x].storage)
        self.assertFalse(g.container[a].storage is f.container[a].storage)
        self.assertFalse(g.container[s].storage is f.container[s].storage)

        self.assertFalse(g.value[a]
                         is not f.value[a])  # should not have been copied
        self.assertFalse(
            g.value[s] is
            f.value[s])  # should have been copied because it is mutable.
        self.assertFalse(
            (g.value[s] !=
             f.value[s]).any())  # its contents should be identical

        self.assertTrue(f(2, 1) == g(
            2))  # they should be in sync, default value should be copied.
        self.assertTrue(f(2, 1) == g(
            2))  # they should be in sync, default value should be copied.
        f(1, 2)  # put them out of sync
        self.assertFalse(f(1, 2) == g(1,
                                      2))  # they should not be equal anymore.
示例#15
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    def test_in_allow_downcast_floatX(self):
        a = theano.tensor.fscalar('a')
        b = theano.tensor.fscalar('b')
        c = theano.tensor.fscalar('c')

        f = theano.function([
            In(a, allow_downcast=True),
            In(b, allow_downcast=False),
            In(c, allow_downcast=None)
        ], (a + b + c))

        # If the values can be accurately represented, everything is OK
        assert numpy.all(f(0, 0, 0) == 0)

        # If allow_downcast is True, idem
        assert numpy.allclose(f(0.1, 0, 0), 0.1)

        # If allow_downcast is False, nope
        self.assertRaises(TypeError, f, 0, 0.1, 0)

        # If allow_downcast is None, it should work iff floatX=float32
        if theano.config.floatX == 'float32':
            assert numpy.allclose(f(0, 0, 0.1), 0.1)
        else:
            self.assertRaises(TypeError, f, 0, 0, 0.1)
示例#16
0
    def test_in_allow_downcast_int(self):
        a = theano.tensor.wvector('a')  # int16
        b = theano.tensor.bvector('b')  # int8
        c = theano.tensor.bscalar('c')  # int8
        f = theano.function([
            In(a, allow_downcast=True),
            In(b, allow_downcast=False),
            In(c, allow_downcast=None)
        ], (a + b + c))

        # Both values are in range. Since they're not ndarrays (but lists),
        # they will be converted, and their value checked.
        assert numpy.all(f([3], [6], 1) == 10)

        # Values are in range, but a dtype too large has explicitly been given
        # For performance reasons, no check of the data is explicitly performed
        # (It might be OK to change this in the future.)
        self.assertRaises(TypeError, f, [3], numpy.array([6], dtype='int16'),
                          1)

        # Value too big for a, silently ignored
        assert numpy.all(f([2**20], numpy.ones(1, dtype='int8'), 1) == 2)

        # Value too big for b, raises TypeError
        self.assertRaises(TypeError, f, [3], [312], 1)

        # Value too big for c, raises TypeError
        self.assertRaises(TypeError, f, [3], [6], 806)
    def test_deepcopy(self):
        a = T.scalar()  # the a is for 'anonymous' (un-named).
        x, s = T.scalars('xs')

        f = function([
            x,
            In(a, value=1.0, name='a'),
            In(s, value=0.0, update=s + a * x, mutable=True)
        ], s + a * x)
        try:
            g = copy.deepcopy(f)
        except NotImplementedError as e:
            if e[0].startswith('DebugMode is not picklable'):
                return
            else:
                raise
        # if they both return, assume  that they return equivalent things.
        # print [(k,id(k)) for k in f.finder.keys()]
        # print [(k,id(k)) for k in g.finder.keys()]

        self.assertFalse(g.container[0].storage is f.container[0].storage)
        self.assertFalse(g.container[1].storage is f.container[1].storage)
        self.assertFalse(g.container[2].storage is f.container[2].storage)
        self.assertFalse(x in g.container)
        self.assertFalse(x in g.value)
        self.assertTrue(len(f.defaults) == len(g.defaults))
        self.assertTrue(
            f._check_for_aliased_inputs is g._check_for_aliased_inputs)
        self.assertTrue(f.name == g.name)
        self.assertTrue(f.maker.fgraph.name == g.maker.fgraph.name)
        # print 'f.defaults = %s' % (f.defaults, )
        # print 'g.defaults = %s' % (g.defaults, )
        self.assertTrue(
            all([
                f_req == g_req and f_feed == g_feed and f_val == g_val
                for ((f_req, f_feed, f_val),
                     (g_req, g_feed, g_val)) in zip(f.defaults, g.defaults)
            ]))

        self.assertFalse(
            g.value[1] is f.value[1])  # should not have been copied
        self.assertFalse(
            g.value[2] is
            f.value[2])  # should have been copied because it is mutable.
        self.assertFalse(
            (g.value[2] !=
             f.value[2]).any())  # its contents should be identical

        self.assertTrue(f(2, 1) == g(
            2))  # they should be in sync, default value should be copied.
        self.assertTrue(f(2, 1) == g(
            2))  # they should be in sync, default value should be copied.
        f(1, 2)  # put them out of sync
        self.assertFalse(f(1, 2) == g(1,
                                      2))  # they should not be equal anymore.
        g(1, 2)  # put them back in sync
        self.assertTrue(f(3) == g(3))  # They should be in sync again.
示例#18
0
 def t():
     f = function(
         [
             In(a, name={"adsf", ()}, value=1.0),
             In(x, name=(), value=2.0),
             In(s, name=tt.scalar(), value=3.0),
         ],
         a + x + s,
     )
     return f
示例#19
0
    def test_deepcopy(self):
        a = tt.scalar()  # the a is for 'anonymous' (un-named).
        x, s = tt.scalars("xs")

        f = function(
            [
                x,
                In(a, value=1.0, name="a"),
                In(s, value=0.0, update=s + a * x, mutable=True),
            ],
            s + a * x,
        )
        try:
            g = copy.deepcopy(f)
        except NotImplementedError as e:
            if e[0].startswith("DebugMode is not picklable"):
                return
            else:
                raise
        # if they both return, assume  that they return equivalent things.
        # print [(k,id(k)) for k in f.finder.keys()]
        # print [(k,id(k)) for k in g.finder.keys()]

        assert g.container[0].storage is not f.container[0].storage
        assert g.container[1].storage is not f.container[1].storage
        assert g.container[2].storage is not f.container[2].storage
        assert x not in g.container
        assert x not in g.value
        assert len(f.defaults) == len(g.defaults)
        assert f._check_for_aliased_inputs is g._check_for_aliased_inputs
        assert f.name == g.name
        assert f.maker.fgraph.name == g.maker.fgraph.name
        # print 'f.defaults = %s' % (f.defaults, )
        # print 'g.defaults = %s' % (g.defaults, )
        for ((f_req, f_feed, f_val), (g_req, g_feed, g_val)) in zip(
            f.defaults, g.defaults
        ):
            assert f_req == g_req and f_feed == g_feed and f_val == g_val

        assert g.value[1] is not f.value[1]  # should not have been copied
        assert (
            g.value[2] is not f.value[2]
        )  # should have been copied because it is mutable.
        assert not (g.value[2] != f.value[2]).any()  # its contents should be identical

        assert f(2, 1) == g(
            2
        )  # they should be in sync, default value should be copied.
        assert f(2, 1) == g(
            2
        )  # they should be in sync, default value should be copied.
        f(1, 2)  # put them out of sync
        assert f(1, 2) != g(1, 2)  # they should not be equal anymore.
        g(1, 2)  # put them back in sync
        assert f(3) == g(3)  # They should be in sync again.
示例#20
0
    def test_deepcopy(self):
        a = T.scalar() # the a is for 'anonymous' (un-named).
        x,s = T.scalars('xs')

        f = function([x, In(a, value=1.0,name='a'), In(s, value=0.0, update=s+a*x, mutable=True)], s+a*x)

        try:
            g = copy.deepcopy(f)
        except NotImplementedError, e:
            if e[0].startswith('DebugMode is not picklable'):
                return
            else:
                raise
示例#21
0
    def test_shared_state0(self):
        a = T.scalar() # the a is for 'anonymous' (un-named).
        x,s = T.scalars('xs')

        f = function([x, In(a, value=1.0,name='a'), In(s, value=0.0, update=s+a*x, mutable=True)], s+a*x)
        g = function([x, In(a, value=1.0,name='a'), In(s, value=f.container[s], update=s-a*x, mutable=True)], s+a*x)

        f(1, 2)
        self.assertTrue(f[s] == 2)
        self.assertTrue(g[s] == 2)
        g(1, 2)
        self.assertTrue(f[s] == 0)
        self.assertTrue(g[s] == 0)
示例#22
0
    def __init__(self):
        a = T.scalar() # the a is for 'anonymous' (un-named).
        x,s = T.scalars('xs')
        v = T.vector('v')

        self.s = s
        self.x = x
        self.v = v

        self.e = a * x + s

        self.f1 = function([x, In(a, value=1.0,name='a'), In(s, value=0.0, update=s+a*x, mutable=True)], s+a*x)

        self.f2 = function([x, In(a, value=1.0,name='a'), In(s, value=self.f1.container[s], update=s+a*x, mutable=True)], s+a*x)
示例#23
0
    def test_random_function_ndim(self):
        # Test that random_function helper function accepts argument ndim
        rng_R = random_state_type()

        # ndim is an optional argument indicating the length of the 'shape'
        # ndim not specified, OK
        post_out4, out4 = uniform(rng_R, (4, ))

        # ndim specified, consistent with shape, OK
        post_out1_4, out1_4 = uniform(rng_R, (4, ), ndim=1)
        post_out2_4_4, out2_4_4 = uniform(rng_R, (4, 4), ndim=2)

        # ndim specified, but not compatible with shape
        with pytest.raises(ValueError):
            uniform(rng_R, (4, ), ndim=2)

        f_ok = function(
            [
                In(
                    rng_R,
                    value=np.random.RandomState(utt.fetch_seed()),
                    update=post_out2_4_4,
                    mutable=True,
                )
            ],
            [out4, out1_4, out2_4_4],
            accept_inplace=True,
        )

        # The correct cases should execute properly
        o4, o1_4, o2_4_4 = f_ok()

        # Check the sanity of the answers
        assert np.allclose(o4, o1_4)
        assert np.allclose(o4, o2_4_4[0])
示例#24
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    def test_normal(self):
        # Test that raw_random.normal generates the same results as numpy.
        # Check over two calls to see if the random state is correctly updated.
        rng_R = random_state_type()
        # Use non-default parameters
        post_r, out = normal(rng_R, (2, 3), 4.0, 2.0)

        f = function(
            [
                In(
                    rng_R,
                    value=np.random.RandomState(utt.fetch_seed()),
                    update=post_r,
                    mutable=True,
                )
            ],
            [out],
            accept_inplace=True,
        )

        numpy_rng = np.random.RandomState(utt.fetch_seed())
        val0 = f()
        val1 = f()
        numpy_val0 = numpy_rng.normal(4.0, 2.0, size=(2, 3))
        numpy_val1 = numpy_rng.normal(4.0, 2.0, size=(2, 3))
        assert np.allclose(val0, numpy_val0)
        assert np.allclose(val1, numpy_val1)
示例#25
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    def test_poisson(self):
        # Test that raw_random.poisson generates the same results as numpy.
        # Check over two calls to see if the random state is correctly updated.
        rng_R = random_state_type()
        # Use non-default parameters, and larger dimensions because of
        # the integer nature of the result
        post_r, out = poisson(rng_R, lam=5, size=(11, 8))

        f = function(
            [
                In(
                    rng_R,
                    value=np.random.RandomState(utt.fetch_seed()),
                    update=post_r,
                    mutable=True,
                )
            ],
            [out],
            accept_inplace=True,
        )

        numpy_rng = np.random.RandomState(utt.fetch_seed())
        val0 = f()
        val1 = f()
        numpy_val0 = numpy_rng.poisson(5, size=(11, 8))
        numpy_val1 = numpy_rng.poisson(5, size=(11, 8))
        assert np.allclose(val0, numpy_val0)
        assert np.allclose(val1, numpy_val1)
示例#26
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    def test_multinomial(self):
        # Test that raw_random.multinomial generates the same results as numpy.
        # Check over two calls to see if the random state is correctly updated.
        rng_R = random_state_type()
        post_r, out = multinomial(rng_R, (7, 3), 6, [0.2] * 5)

        f = function(
            [
                In(
                    rng_R,
                    value=np.random.RandomState(utt.fetch_seed()),
                    update=post_r,
                    mutable=True,
                )
            ],
            [out],
            accept_inplace=True,
        )

        numpy_rng = np.random.RandomState(utt.fetch_seed())
        (val0, ) = f()
        (val1, ) = f()
        numpy_val0 = numpy_rng.multinomial(6, [0.2] * 5, (7, 3))
        numpy_val1 = numpy_rng.multinomial(6, [0.2] * 5, (7, 3))
        assert np.all(val0 == numpy_val0)
        assert np.all(val1 == numpy_val1)

        assert val0.shape == (7, 3, 5)
        assert val1.shape == (7, 3, 5)
示例#27
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    def test_doc(self):
        # Ensure the code given in pfunc.txt works as expected

        # Example #1.
        a = lscalar()
        b = shared(1)
        f1 = pfunc([a], (a + b))
        f2 = pfunc([In(a, value=44)], a + b, updates={b: b + 1})
        assert b.get_value() == 1
        assert f1(3) == 4
        assert f2(3) == 4
        assert b.get_value() == 2
        assert f1(3) == 5
        b.set_value(0)
        assert f1(3) == 3

        # Example #2.
        a = tensor.lscalar()
        b = shared(7)
        f1 = pfunc([a], a + b)
        f2 = pfunc([a], a * b)
        assert f1(5) == 12
        b.set_value(8)
        assert f1(5) == 13
        assert f2(4) == 32
示例#28
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    def test_no_inplace(self):
        # Test that when not running inplace, the RandomState is not updated
        rf = RandomFunction("uniform", tensor.dvector)
        rng_R = random_state_type()

        post_r, out = rf(rng_R, (3, ), 0.0, 1.0)
        f = function([rng_R], [post_r, out])
        rng = np.random.RandomState(utt.fetch_seed())

        rng0, val0 = f(rng)
        rng_ = np.random.RandomState(utt.fetch_seed())
        # rng should still be in a fresh state
        assert rng_R.type.values_eq(rng, rng_)
        # rng0 should be in an updated state
        assert not rng_R.type.values_eq(rng, rng0)

        f2 = function([In(rng_R, value=rng, update=post_r, mutable=False)],
                      [post_r, out])
        rng2, val2 = f2()
        # rng should be in a fresh state
        assert rng_R.type.values_eq(rng, rng_)
        # rng2 should be in an updated state
        assert not rng_R.type.values_eq(rng, rng2)
        # The updated state should be the same for both functions
        assert rng_R.type.values_eq(rng2, rng0)

        rng3, val3 = f2()
        # rng2 should not have changed
        assert rng_R.type.values_eq(rng2, rng0)
        # rng3 should be an updated again version of rng2
        assert not rng_R.type.values_eq(rng3, rng2)
        assert not rng_R.type.values_eq(rng3, rng)
示例#29
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    def test_pickle(self):
        a = T.scalar() # the a is for 'anonymous' (un-named).
        x,s = T.scalars('xs')

        f = function([x, In(a, value=1.0,name='a'), In(s, value=0.0, update=s+a*x, mutable=True)], s+a*x)

        try:
            # Note that here we also test protocol 0 on purpose, since it
            # should work (even though one should not use it).
            g = cPickle.loads(cPickle.dumps(f, protocol=0))
            g = cPickle.loads(cPickle.dumps(f, protocol=-1))
        except NotImplementedError, e:
            if e[0].startswith('DebugMode is not picklable'):
                return
            else:
                raise
示例#30
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    def test_binomial(self):
        # Test that raw_random.binomial generates the same results as numpy.
        # Check over two calls to see if the random state is correctly updated.
        rng_R = random_state_type()
        # Use non-default parameters, and larger dimensions because of
        # the integer nature of the result
        post_r, bin = binomial(rng_R, (7, 12), 5, 0.8)

        f = function(
            [
                In(
                    rng_R,
                    value=np.random.RandomState(utt.fetch_seed()),
                    update=post_r,
                    mutable=True,
                )
            ],
            [bin],
            accept_inplace=True,
        )

        numpy_rng = np.random.RandomState(utt.fetch_seed())
        val0 = f()
        val1 = f()
        numpy_val0 = numpy_rng.binomial(5, 0.8, size=(7, 12))
        numpy_val1 = numpy_rng.binomial(5, 0.8, size=(7, 12))
        assert np.all(val0 == numpy_val0)
        assert np.all(val1 == numpy_val1)