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Guidance of development,validation,and evaluation of algorithms for populating health status in observational studies of routinely collected data(DEVELOP-RCD)
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作者 Wen Wang Ying-Hui Jin +8 位作者 Mei Liu Qiao He Jia-Yue Xu Ming-Qi Wang Guo-Wei Li Bo Fu Si-Yu Yan Kang Zou Xin Sun 《Military Medical Research》 2025年第5期788-798,共11页
Background:In recent years,there has been a growing trend in the utilization of observational studies that make use of routinely collected healthcare data(RCD).These studies rely on algorithms to identify specific hea... Background:In recent years,there has been a growing trend in the utilization of observational studies that make use of routinely collected healthcare data(RCD).These studies rely on algorithms to identify specific health conditions(e.g.,diabetes or sepsis)for statistical analyses.However,there has been substantial variation in the algorithm development and validation,leading to frequently suboptimal performance and posing a significant threat to the validity of study findings.Unfortunately,these issues are often overlooked.Methods:We systematically developed guidance for the development,validation,and evaluation of algorithms designed to identify health status(DEVELOP-RCD).Our initial efforts involved conducting both a narrative review and a systematic review of published studies on the concepts and methodological issues related to algorithm development,validation,and evaluation.Subsequently,we conducted an empirical study on an algorithm for identifying sepsis.Based on these findings,we formulated specific workflow and recommendations for algorithm development,validation,and evaluation within the guidance.Finally,the guidance underwent independent review by a panel of 20 external experts who then convened a consensus meeting to finalize it.Results:A standardized workflow for algorithm development,validation,and evaluation was established.Guided by specific health status considerations,the workflow comprises four integrated steps:assessing an existing algorithm’s suitability for the target health status;developing a new algorithm using recommended methods;validating the algorithm using prescribed performance measures;and evaluating the impact of the algorithm on study results.Additionally,13 good practice recommendations were formulated with detailed explanations.Furthermore,a practical study on sepsis identification was included to demonstrate the application of this guidance.Conclusions:The establishment of guidance is intended to aid researchers and clinicians in the appropriate and accurate development and application of algorithms for identifying health status from RCD.This guidance has the potential to enhance the credibility of findings from observational studies involving RCD. 展开更多
关键词 Routinely collected healthcare data(rcd) ALGORITHMS Health status GUIDANCE
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基于高斯分布的机器人超声波环境建模研究 被引量:6
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作者 张凤 黄陆君 +2 位作者 袁帅 赵岚光 孙阳 《仪器仪表学报》 EI CAS CSCD 北大核心 2014年第9期2020-2026,共7页
针对超声波两测量关联模型存在错误关联的问题,本文提出一种最大化外接圆概率的关联模型以提高关联准确性。首先,在CD聚类中增加探测目标分布信息,并提出判断RCD来自同一特征的方法;然后,最大化外切圆分布概率以提高关联准确性,对特征... 针对超声波两测量关联模型存在错误关联的问题,本文提出一种最大化外接圆概率的关联模型以提高关联准确性。首先,在CD聚类中增加探测目标分布信息,并提出判断RCD来自同一特征的方法;然后,最大化外切圆分布概率以提高关联准确性,对特征参数不确定性进行分析,利用最小二乘法进行特征参数估计;最后,实现了特征匹配和融合。仿真和实验表明,该算法能有效提高特征关联准确性,减少错误关联,参数估计方法提高了估计准确性,满足机器人环境建模要求。 展开更多
关键词 移动机器人 超声波测距 rcd聚类 数据关联 环境建模
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剩余电流保护器动作特性试验装置研究 被引量:3
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作者 闫伟 武一 侯春颖 《低压电器》 北大核心 2011年第4期51-54,共4页
设计了一种基于IPC-610工控机的剩余电流保护器动作特性试验装置,由剩余电流产生、电流采集、逻辑控制及电机保护等电路模块组成,详细阐述了剩余电流保护器动作特性试验装置的硬件结构设计。通过实际应用证明,该装置对电子式和电磁式剩... 设计了一种基于IPC-610工控机的剩余电流保护器动作特性试验装置,由剩余电流产生、电流采集、逻辑控制及电机保护等电路模块组成,详细阐述了剩余电流保护器动作特性试验装置的硬件结构设计。通过实际应用证明,该装置对电子式和电磁式剩余电流保护器采用不同的检测方法,均可有效提高试验的精确度。 展开更多
关键词 剩余电流保护器 动作特性试验 数据采集
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连续存储地震仪的数据存储机制设计与实现 被引量:1
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作者 吴海 《煤炭技术》 CAS 北大核心 2017年第4期248-249,共2页
矿用节点式地震仪采用连续记录、连续存储的工作模式,数据量大,传统地震数据格式不能满足其存储要求。针对研制的矿用节点式地震仪设计了一种RCD数据格式,利用嵌入式C语言在该仪器硬件平台上实现了可靠存储。给出了RCD数据格式的设计要... 矿用节点式地震仪采用连续记录、连续存储的工作模式,数据量大,传统地震数据格式不能满足其存储要求。针对研制的矿用节点式地震仪设计了一种RCD数据格式,利用嵌入式C语言在该仪器硬件平台上实现了可靠存储。给出了RCD数据格式的设计要求、详细规范,并在仪器上进行了实际应用。 展开更多
关键词 连续存储 节点式 数据存储 rcd格式
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