Lottery ticket hypothesis for deep neural networks emphasizes the importance of initialization used to re-train the sparser networks obtained using the iterative magnitude pruning process. An explanation for why the specific initialization proposed by the lottery ticket hypothesis tends to work better in terms of generalization (and training) performance has been lacking. Moreover, the underlying principles in iterative magnitude pruning, like the pruning of smaller magnitude weights and the role of the iterative process, lack full understanding and explanation. In this work, we attempt to provide insights into these phenomena by empirically studying the volume/geometry and loss landscape characteristics of the solutions obtained at various stages of the iterative magnitude pruning process.

深度神经网络的票证彩票假设强调了重新训练使用迭代幅度修剪过程获得的更稀疏网络所使用的初始化的重要性。这项研究试图通过对幅度修剪过程的各个阶段获得的解决方案的体积/几何和损失景观特征进行经验性研究，以揭示票证彩票假设的特定初始化为何在泛化（和训练）性能方面表现更好，并着重研究了幅度修剪和迭代过程的底层原理，如较小幅度权重的修剪和迭代过程的作用。

彩票票假设与迭代剪枝的深入洞察