'Initializes all Parameters managed by this dictionary to be used for `NDArray`
API. It has no effect when using `Symbol` API.
Parameters
init : Initializer
Global default Initializer to be used when `Parameter.init` is `None`.
Otherwise, `Parameter.init` takes precedence.
ctx : Context or list of Context
Keeps a copy of Parameters on one or many context(s).
force_reinit : bool, default False
Whether to force re-initialization if parameter is already initialized.'

def initialize(self, init=initializer.Uniform(), ctx=None, verbose=False, force_reinit=False):

    if verbose:
        init.set_verbosity(verbose=verbose)
    for (_, v) in self.items():
        v.initialize(None, ctx, init, force_reinit=force_reinit)
