【摘 要】
:
Radio tomographic imaging(RTI)provides a powerful mean for device-free localization(DFL),which utilizes the received signal strength(RSS)to reconstruct the attenuation image caused by the target.The r
【机 构】
:
Sun Yat-sen University,Guangzhou 510006,China;Guangzhou college of South China University of Technol
论文部分内容阅读
Radio tomographic imaging(RTI)provides a powerful mean for device-free localization(DFL),which utilizes the received signal strength(RSS)to reconstruct the attenuation image caused by the target.The reconstruction problem can be modeled as a Bayesian compressed sensing(BCS)problem.However,the fast BCS algorithm degrades in reconstruction performances due to the inaccurate estimation of the noise hyper-parameters.To address this,this paper presents a framework of feedback-based fast BCS both for homogeneous and heterogeneous cases.Theoretical modeling and Bayesian inference procedure are given for this feedback-based framework.Finally,RTI experimental results from three scenarios demonstrate the effectiveness of the proposed scheme.
其他文献
Graph theory has been proved effective for salient object detection.Existing graph-based salient object detection methods propagate saliency either via a one-stage process,where both seed nodes and gr
Technology of maximum power point tracking(MPPT)is the key technological problem for light volt generating.This paper studies a type of adaptive weight inertia variation cat swarm algorithm,which is r
This paper focuses on multiple time delays in congestion control for networks,which is seldom considered in the literature.A new mathematical state-space model for networks with different state and in
In this paper,we present a novel video salient object detection method based on group sparsity.Specially,both temporal and spatial saliency detection are considered.First,the temporal and spatial dict
牦牛(Bos grunniens)起源于中国,是中国的原始物种,主要分布在青藏高原和周围海拔3000m以上的高原地区,牦牛适应高寒、低氧能力较强,但生育能力较为低下,流产率高,从而严重影响了牦牛的繁殖以及当地经济发展。本研究选取牦牛卵巢作为研究对象,探究透明质酸合成酶2(Hyaluronate synthase 2,HAS2)和前列腺素内过氧化物合酶2(Prostaglandin-endopero
Discriminant neighborhood preserving embedding(DNPE)is a linear approach,which encodes discriminant information into the objective of neighborhood preserving embedding and improves its classification
协同过滤算法在推荐系统中应用最广泛,其中相似度计算是该算法重要一环.为了提高相似度计算的准确性,以及更好地利用位置行为数据,本文提供了一种基于改进相似度和位置行为的协同过滤推荐算法.首先,利用日志数据离线计算出位置影响力矩阵;其次,根据用户-项目评分矩阵,得到用户对共同评分项目的评分差异,同时引入兴趣加权,计算出评分差异的加权信息熵;最后,将位置影响力矩阵信息融入到基于加权信息熵的相似度中,得到邻
随着大数据时代的到来,图像的数量规模急剧增加,由于图像包含丰富的语义信息成为大众获取相关信息的重要来源.基于深度模型的图像语义分析就是一种通过深度模型将图像内容转换成可直观理解的语义知识的技术,从而受到国内外研究者广泛关注.该技术根据生成目标语义层次差异可分标签、语句和段落三类,本文详细介绍了以上三类方法对应的深度模型结构特点,并从技术的演化趋势出发对比分析了三类方法的应用场景、技术特点和发展现状
In this paper,we consider a microgrid scenario that consists of electric vehicles(EVs),aggregator,renewable energy generation,combined heat and power(CHP)generation,power grid,and thermal energy stora