BASE就是为了解决关系数据库强一致性引起的问题而引起的可用性降低而提出的解决方案。

VIP内容

摘要:深度学习是近年来应用最广泛的心脏图像分割方法。在这篇文章中,我们回顾了超过100篇使用深度学习的心脏图像分割论文,这些论文涵盖了常见的成像方式,包括磁共振成像(MRI)、计算机断层扫描(CT)和超声(US)以及感兴趣的主要解剖结构(心室、心房和血管)。此外,公开可用的心脏图像数据集和代码库的摘要也包括在内,为鼓励重复性研究提供了基础。最后,我们讨论了当前基于深度学习的方法的挑战和局限性(缺乏标签、不同领域的模型可泛化性、可解释性),并提出了未来研究的潜在方向。

成为VIP会员查看完整内容
0
30

最新论文

Intelligent reflecting surface (IRS) can be densely deployed in wireless networks to significantly enhance the communication channels. In this letter, we consider the downlink transmission from a multi-antenna base station (BS) to a single-antenna user, by exploiting the cooperative passive beamforming (CPB) and line-of-sight (LoS) path diversity gains of multi-IRS signal reflection. Unlike existing works where only one single multi-IRS reflection path from the BS to user is selected, we propose a new and more general {\it \textbf{multi-path beam routing}} scheme. Specifically, the BS sends the user's information signal via multiple orthogonal active beams (termed as {\it \textbf{active beam splitting}}), which point towards different IRSs. Then, these beamed signals are subsequently reflected by selected IRSs via their CPB in different paths, and finally coherently combined at the user's receiver (thus named {\it \textbf{passive beam combining}}). For this scheme, we formulate a new multi-path beam routing design problem to jointly optimize the number of IRS reflection paths, the selected IRSs for each of the reflection paths, the active/passive beamforming at the BS/each selected IRS, as well as the BS's power allocation over different active beams, so as to maximize the received signal power at the user. To solve this challenging problem, we first derive the optimal BS/IRS beamforming and BS power allocation for a given set of reflection paths. The clique-based approach in graph theory is then applied to solve the remaining multi-path selection problem efficiently. Simulation results show that our proposed multi-path beam routing scheme significantly outperforms its conventional single-path beam routing special case.

0
0
下载
预览
Top