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移动设备的计算资源和能耗预算都很有限，因此模型压缩对于在移动设备上部署神经网络模型至关重要。传统的模型压缩技术依赖手工设计的启发式和基于规则的策略，需要领域专家探索较大的设计空间，在模型大小、速度和准确率之间作出权衡。本...

旋转之后，坐标轴也跟着旋转了，想要显示在可视区域呢，需要将(0,0)点往 y 轴的反方向移 y 个单位，此时的起始点则为(0,-y)。同理，可以获得旋转-90 度后的起始点为(-x,0)，旋转 180 度后的起始点为(-x,-y)。压缩手机拍出来的照片太大，...

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