Space-Scale Hybrid Continuous-Discrete Sliding Frank-Wolfe Method

被引:0
|
作者
Lage, Clara [1 ]
Pustelnik, Nelly [1 ]
Arbona, Jean Michel [2 ]
Audit, Benjamin [1 ]
机构
[1] ENS Lyon, CNRS, Lab Phys, F-69342 Lyon, France
[2] Univ Lyon, ENS Lyon, CNRS, LBMC, Lyon, France
关键词
DNA; Atomic measurements; Convolution; DNA replication; NanoForkSpeed; sliding Frank-Wolfe method; space-scale dictionary; sparse coding; SHRINKAGE; ALGORITHM; RECOVERY;
D O I
10.1109/LSP.2024.3372769
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this letter, we focus on the challenging problem of designing an off-the-grid method for dictionaries involving both positional and scale shifts. To tackle this challenge, we introduce a novel algorithm inspired by the Sliding Frank-Wolfe approach. In our proposed algorithm, positions are treated as continuous variables, whereas scales are discretized. Such a strategy eliminates numerical instabilities inherent to the direct application of Sliding Frank-Wolfe. We successfully apply this algorithm to the study of DNA replication data.
引用
收藏
页码:830 / 834
页数:5
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