def wrapped(init_key: Key, *args, **kwargs) -> FunctionModule:
has_init_key = kwargs_util.check_in_kwargs(f, init_keyword)
if not has_init_key:
def init_f(init_key, *args, **kwargs):
del init_key, args, kwargs
return {}
def cau_f(variables, *args, **kwargs):
return f(*args, **kwargs), variables
else:
with unzip.new_custom_rules(custom_unzip_rules):
def fun(init_key, *args, **kwargs):
kwargs = {**kwargs, init_keyword: init_key}
return f(*args, **kwargs)
init_f, apply_f = unzip.unzip(fun,
tag=module.VARIABLE)(init_key,
*args,
**kwargs)
cau_f = functools.partial(
harvest.harvest(apply_f, tag=module.ASSIGN), {})
if name is not None:
init_f = harvest.nest(init_f, scope=name)
cau_f = harvest.nest(cau_f, scope=name)
variables = init_f(init_key)
cau_jaxpr, (in_tree,
out_tree) = trace_util.stage(cau_f,
dynamic=True)(variables,
*args, **kwargs)
if name is None:
variables = {
k: module.variable(val, name=k, key=init_key)
for k, val in variables.items()
}
return FunctionModule(variables,
cau_jaxpr,
in_tree,
out_tree,
name=name)
else:
return module.variable(FunctionModule(variables,
cau_jaxpr,
in_tree,
out_tree,
name=name),
name=name,
key=init_key)
def wrapped(key):
def sample(key):
result = primitive.initial_style_bind(
random_variable_p, distribution_name=dist.__class__.__name__)(
_sample_distribution)(key, dist)
return result
if name is not None:
return ppl.random_variable(harvest.nest(sample, scope=name)(key),
name=name)
return sample(key)
def test_unzip_of_nest_should_nest_variables(self):
def f(x):
x = variable(x, name='x')
return x
init, apply = unzip_variable(harvest.nest(f, scope='f'))(1.)
self.assertDictEqual(init(1.), {'f': {'x': 1}})
self.assertEqual(apply({'f': {'x': 2.}}), 2.)
def g(x):
y = harvest.nest(f, scope='f1')(x + 1.)
z = harvest.nest(f, scope='f2')(y + 1.)
return z
init, apply = unzip_variable(g)(1.)
self.assertDictEqual(init(1.), {'f1': {'x': 2}, 'f2': {'x': 3.}})
self.assertEqual(apply({'f1': {'x': 4.}, 'f2': {'x': 100.}}), 100.)
def f(x):
x = harvest.nest(lambda x: x, scope='foo')(x)
return x / 2.
def g(x):
y = harvest.nest(f, scope='f1')(x + 1.)
z = harvest.nest(f, scope='f2')(y + 1.)
return z