不改变原意使其更有逻辑改写以下这段文字：We propose a backbone for the classification of diabetes retinopathy The model enhances the multi-scale representation ability of the backbone by constructing hierarchical residual

Our proposal is to establish a backbone for the classification of diabetes retinopathy that enhances the multi-scale representation ability of the model. This is achieved by constructing hierarchical residual-like connections within each single radix block. Our model also includes an attention force mechanism that suppresses non-lesion feature information and enhances the learning of typical lesion features, thereby improving the learning of low-level feature information. As a result, the classification performance of the model is further improved. The experimental results demonstrate that our proposed method significantly enhances the accuracy of DR model classification