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요약정보
基于沙漏网络的多层次协同搜索方法 / Multi-level co-exploration method based on hourglass network
Resource Type
Academic Journal
Authors
陈桂荣
;
邱仲禹
;
粟涛
;
陈弟虎
;
Chen Guirong
;
Qiu Zhongyu
;
Su Tao
;
Chen Dihu
Source
计算机应用研究 / Application Research of Computers
. 39(8):2284-2289
Subject
神经网络
FPGA
协同搜索
沙漏网络
延时模型
Language
Chinese
ISSN
1001-3695
Online Access
Find it @ DONGA
초록
目前,人工智能快速发展,人们可以通过探索硬件设计空间使优秀的神经网络算法高效部署在FPGA加速器.然而,由于参数量大、操作过于复杂而导致算法与硬件难以匹配,加速效率不高.为了算法和硬件两者匹配性更强,提出了一种多层次协同搜索的方法,采用SPOS搜索策略并以检测准确率和延时为评估目标,搜索出最优神经网络架构、量化方式和硬件设计参数组合.该方法应用在姿态识别中具有优异性能的沙漏网络中,在获取候选子网络量化前、后的检测准确率的同时对硬件设计参数使用遍历搜索得到预估延时,根据目标函数获取最高得分的最优组合.为了保证获取的数据有效性,子网络需要进行重新训练、量化后重新推理得到检测准确率,获取硬件设计参数则利用基于Spinal HDL设计的加速器模板进行仿真测试得到测试延时.就平均而言,该方法比文献[1]减少了 83.3%的参数,准确率只下降了 0.69;比传统加速方法平均减少了 33.2%参数量,准确率只下降了 0.46,网络推理的测试总延时减少22.1%,在沙漏块的测试延时减少67.8%.总体而言,该协同搜索方法对于沙漏网络的优化有一定效果,比传统加速设计方法更有优势.
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