def data(self, ctx=None):
d = self._check_and_get(self._data, ctx)<EOL>if self._rate:<EOL><INDENT>d = nd.Dropout(d, self._rate, self._mode, self._axes)<EOL><DEDENT>return d<EOL>
Returns a copy of this parameter on one context. Must have been
        initialized on this context before.

        Parameters
        ----------
        ctx : Context
            Desired context.
        Returns
        -------
        NDArray on ctx