(PECL fann >= 1.0.0)
fann_set_cascade_activation_steepnesses — ���ü�����ѡ����ȵ����顣
$ann
, array $cascade_activation_steepnesses_count
) : bool���ü�����ѡ����ȵ����顣
��֪���ĸ���ѡ��Ԫ���ᱻ���������ɣ��μ� fann_get_cascade_num_candidates() .
ann
Neural network resource.
cascade_activation_steepnesses_count
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Returns TRUE
on success, or FALSE
otherwise.