Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...

Abstract: Deep learning has demonstrated significant potential in the field of array processing. Sparse array reconfigurability can play a vital role in cognitive sensing within dynamic radio ...

特产推荐系统的本质，是通过技术的力量解决“信息不对称”与“需求不匹配”的矛盾，让游客更轻松地发现心仪的地域宝藏，让生产者更精准地触达目标客群。Python凭借其强大的数据处理与建模能力，不仅为这一目标提供了可行的技术路径，更让“智能推荐”从概念走向了落地。当游客在旅途中接过一份“懂我需求”的特产礼盒，当生产者因精准的订单反馈而扩大生产规模，这便是技术赋能文旅经济的最好注脚——它不仅提升了效率，更传 ...

. ├── challenge.py # Basic KNN segmentation pipeline (k=3) ├── challenge_final_gpu.py # Advanced GPU-optimized training with U-Net comparison ├── unet_model.py # U-Net architecture implementations ├── ...