【简读】The Impact of Reinitialization on Generalization in …
网页本文研究的主题是在训练神经网络过程中的 reinitialization (二次初始化) 的作用，凭借直觉来看，如果我们在训练神经网络到了一定的步数后，将其中的部分参数重新进行一次初始化，那么这样的训练方式可以有效地帮助我们跳出局部最小点，从而提高模型的泛化 ...
The Impact of Reinitialization on Generalization in Convolutional ...
网页2021年9月1日 — We study the impact of different reinitialization methods in several convolutional architectures across 12 benchmark image classification datasets, analyzing their potential gains and highlighting limitations. We also introduce a new layerwise reinitialization algorithm that outperforms previous methods and suggest explanations of …
网页Reinitialization • Large variations in ∇φ for general speed functions F • Poor accuracy and performance, need smaller timesteps for stability • Reinitialize by finding new φ with same zero level set but |∇φ| = 1 • Different approaches: 1. Integrate the reinitialization equation for a few time steps φt +sign(φ)(|∇φ|−1) = 0 2.
网页The process is commonly known as reinitialization, which is used extensively as a numerical strategy for maintain-ing interface evolution stable (cf. [9,10]). However, there are some drawbacks...
Optimization-based level-set re-initialization: A robust interface ...
网页2024年2月15日 — Geometrical level set reinitialization using closest point method and kink detection for thin filaments, topology changes and two-phase flows
A new finite element level set reinitialization method based on …
网页2021年8月1日 — Highlights. •. A novel technique to reinitialize the level set is introduced by shifting the boundary conditions. •. The narrow band is adopted and a Laplace equation is solved to obtain the initial guess for the Picard iteration. •. The technique is efficient and easy-implemented for level set reinitialization holding optimal convergence rate. •.
A stable interface-preserving reinitialization equation for ...
网页2023年3月1日 — In this paper, a novel reinitialization approach has been presented which circumvents these limitations by reformulating the existing reinitialization equation. The new reinitialization equation by design ensures that the interface contour is kept invariant under the action of level set reinitialization.
网页impact of different reinitialization methods in several convolu-tional architectures across 12 benchmark image classification datasets, analyzing their potential gains and highlighting lim-itations. We also introduce a new layerwise reinitialization algorithm that outperforms previous methods and suggest ex-
Sixth-Order Accurate Schemes for Reinitialization and
网页2020年4月18日 — Here we build off WENO schemes for Hamilton–Jacobi equations to develop novel sixth-order accurate methods for reinitialization and extrapolation. We present numerical results in three dimensional spaces demonstrating fourth-order accuracy of the interfacial curvature and sixth-order accuracy for the extrapolated surface fields.
level set method reinitialization (水平集方法的重初始化）
网页2014年3月16日 — 演化方程迭代若干步，若水平集函数梯度 phi_grad 变化剧烈，就需要reinitialization. 一般通过求解 d phi/ dt = sig(phi_0) (1 - norm(phi_grad)) 得到新 phi。 该方程的稳态解自动满足 norm(phi_grad) = 1 ，即意味着在重初始化计算中，界面不用改变。