def __init__(self):
        """
        Use __init__ to define parameter network needs
        """
        self.shared_param_list = ['rpn_conv', 'rpn_cls_score', 'rpn_bbox_pred']
        self.shared_param_dict = {}
        for name in self.shared_param_list:
            self.shared_param_dict[name + '_weight'] = mx.sym.Variable(name + '_weight')
            self.shared_param_dict[name + '_bias'] = mx.sym.Variable(name + '_bias')

        Use __init__ to define parameter network needs
        
fpn/symbols/resnet_v1_101_fpn_rcnn.py