搜索结果: 1-3 共查到“Split Bregman”相关记录3条 . 查询时间(0.109 秒)
Multi-dimensional sparse structured signal approximation using split Bregman iterations
Sparse approximation Regularization Fused-LASSO Split Bregman Multidimensional signals
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2013/5/2
The paper focuses on the sparse approximation of signals using overcomplete representations, such that it preserves the (prior) structure of multi-dimensional signals. The underlying optimization prob...
Sparse Inverse Covariance Estimation via the Split Bregman Method
Machine Learning (stat.ML) Learning (cs.LG)
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2010/12/17
We consider the problem of learning the structure of graphical models by estimating the inverse covariance matrix with sparsity regularization. We develop a new method based on split Bregman to solve ...
多相图像分割的交替凸松弛优化及其Split Bregman算法
多相图像分割 变分方法 凸优化方法 Split Bregman算法
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2013/12/12
变分水平集模型已成为多相图像分割的基本框架,其求解过程通常为计算水平集函数演化方程的稳态解,计算效率不高。为提高计算效率,本研究采用n个水平集函数划分n个区域的分段常值多相图像分割变分模型,将对水平集函数的优化问题转化为对离散的二值水平集函数的优化问题;然后将其转化为凸优化问题,再通过对结果阈值化得到原问题的解,并且本研究设计了相应的Split Bregman算法;最后通过多个平面图像分割实例说明...