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2018 7th International Conference on Digital Home (ICDH)最新文献

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Simulating a Basketball Game with HDP-Based Models and Forecasting the Outcome 基于hdp模型的篮球比赛模拟与结果预测
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00042
Xin Du, Weihong Cai
We used HDP-based models to model the progression of a basketball game. As known to all, the hidden Markov model can be used for analyzing sequences of the game's content. By introducing Hierarchical Dirichlet Processes on feature extraction and HMMs, we can tackle down the challenges of unknown numbers of mixtures in both models by resorting to nonparametric approach. We employ variational inference for model calculation and cluster the extracted rounds of a basketball match in the form of HMM parameters to forecast the overcome. The proposed scheme is then verified by comparing with other commonly used forecasting approaches: logit regression of the outcome, Naive Bayes method, and Neural Networks. We found that HDP-based models are appropriate for modeling a basketball match and produces more accurate predictions.
我们使用基于hdp的模型来模拟篮球比赛的进程。众所周知,隐马尔可夫模型可以用于分析游戏内容的序列。通过在特征提取和hmm上引入层次狄利克雷过程,我们可以利用非参数方法解决两种模型中未知数量混合的挑战。我们采用变分推理进行模型计算,并将抽取到的篮球赛回合数以HMM参数的形式聚类来预测克服。然后通过与其他常用的预测方法(结果的logit回归、朴素贝叶斯方法和神经网络)进行比较来验证所提出的方案。我们发现基于hdp的模型适用于篮球比赛的建模,并产生更准确的预测。
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引用次数: 6
A Black-Box Based Script Repair Method for GUI Regression Test 基于黑盒的GUI回归测试脚本修复方法
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00035
Weina Jiang, Xiaozhe Li, Xinming Wang
Testing applications with GUI is one of the most tedious tasks in software development. Test automation alleviates this burden by executing scripts that simulate how users interact with GUI. However, in practice efforts spent on developing GUI test automation scripts can be wasteful when the application evolves and modifies GUI components that are referenced by the scripts. In this paper, we propose a new test script repair framework to address this problem. The framework of our method consists of three main modules. Firstly, the script processing module calculates a similarity matrix of each script pair. Secondly, the code analysis module maintains an object repair map which is used to store repair operations. Finally, the script update module applies the map to the scripts under repair. The repair rate of our method keeps increasing with more test script pairs provided and it could be more than 95%. Experiments also show that our method is better than the tool for scrip maintaining within QTP not only in repair rate but also in time consuming.
使用GUI测试应用程序是软件开发中最乏味的任务之一。通过执行模拟用户如何与GUI交互的脚本,测试自动化减轻了这种负担。然而,在实践中,当应用程序发展并修改由脚本引用的GUI组件时,花费在开发GUI测试自动化脚本上的努力可能是浪费的。在本文中,我们提出了一个新的测试脚本修复框架来解决这个问题。我们的方法框架由三个主要模块组成。首先,脚本处理模块计算每个脚本对的相似度矩阵。其次,代码分析模块维护一个对象修复图,用于存储修复操作。最后,脚本更新模块将映射应用于正在修复的脚本。随着提供的测试脚本对的增加,我们的方法的修复率不断提高,可以达到95%以上。实验结果表明,该方法不仅在修复率上优于QTP内的脚本维护工具,而且在耗时上也优于QTP内的脚本维护工具。
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引用次数: 2
Adaptive Weighted Deformable Part Model for Object Detection 目标检测的自适应加权可变形部件模型
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00021
Yan Wang, Zhixun Su, Jiaxin Gao
We describe an adaptive weighted deformable part model for object detection based on traditional deformable part model(DPM). In the original DPM model, we find that the high response score region calculated by the template filter as high-energy regions, which indicates that the influence on the detection results is greater. The parts can affect the results of object detection, some important parts may directly determine the accuracy of the results, and some unimportant parts even produce bad impacts. To reduce the adverse effects caused by unimportant part filter, we add an adaptive coefficient strategy to the traditional method, which could improve the accuracy of object detection without efficiency loss. The proposed algorithm is better in accuracy compared with the traditional deformable part model, especially in the case of occlusion, with the same efficiency.
在传统可变形零件模型的基础上,提出了一种自适应加权可变形零件模型。在原始DPM模型中,我们发现模板滤波器计算出的高响应分数区域为高能区域,这表明对检测结果的影响更大。零件会影响目标检测的结果,一些重要的零件可能直接决定结果的准确性,而一些不重要的零件甚至会产生不良影响。为了减少不重要部分滤波带来的不利影响,我们在传统方法的基础上增加了自适应系数策略,在不损失效率的前提下提高了目标检测的精度。与传统的可变形零件模型相比,该算法具有更高的精度,特别是在遮挡情况下,具有相同的效率。
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引用次数: 0
RGB-D Hand Pose Estimation Using Fourier Descriptor 基于傅立叶描述子的RGB-D手部姿态估计
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00018
Zihao Rong, Dehui Kong, Shaofan Wang, Baocai Yin
The emergence of civil-use depth sensors made vision-based man-machine interaction possible through hand gesture, which relies fundamentally on hand pose estimation techniques. In this work, a novel hand pose estimation method is proposed, based essentially on Fourier-descriptor-based indexing in a pre-built hand template library. The proposed method takes color-depth as input, extracts necessary hand information in preprocessing, and estimate hand pose through two stages, from rough to accurate. This proposed hand pose estimation method is simple and efficient; quantitative and qualitative evaluations exhibit its effectiveness.
民用深度传感器的出现使得基于视觉的人机交互通过手势成为可能,这主要依赖于手部姿势估计技术。在这项工作中,提出了一种新的手部姿态估计方法,该方法主要基于预先构建的手部模板库中的基于傅里叶描述符的索引。该方法以颜色深度为输入,在预处理中提取必要的手部信息,通过从粗略到精确两个阶段估计手部姿态。提出的手姿估计方法简单有效;定量和定性评价显示了其有效性。
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引用次数: 3
A New Triangle Mesh Simplification Method with Sharp Feature 一种新的带有尖锐特征的三角网格简化方法
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00063
Zhuo Shi, Kong Qian, Ke Yu, Xiaonan Luo
In this paper, a mesh simplification method with Sharp Feature based on a reverse interpolation loop subdivision (RILSP) is proposed. Combined with the treatment of extraordinary vertex in the improved butterfly subdivision, the loop subdivision mask is expanded, thereby improving the traditional loop subdivision algorithm into interpolation subdivision. The reverse operation of the interpolation loop subdivision is used to simplify the complex 3D mesh; a progressive mesh is generated by an initial mesh and a series of vertex offsets. The algorithm reduces the regular point relative reverse butterfly subdivision of compensation operation and greatly reduces simplification and reconstruction. Likewise, the reverse butterfly subdivision algorithm reduces the regular point compensation operation and greatly reduces simplification and reconstruction compared with the existing reverse loop subdivision by considering more control vertices. Furthermore, the edge point with respect to the center point is compensated by sacrificing a small amount of time to calculate the smaller vertex offset, this method gives high transmission speed and low offset. RILSP performs the loss-less and reversible simplification and reconstruction for the vertex compensation in reconstruction process. Compared to Luo's Reverse Butterfly Subdivision Process (RBSP), RILSP cancels the offsets compensation of even vertex in the update process of vertexes, and significantly increased speed of mesh simplification. Compared to Luo's Reverse Loop Subdivision Process (RLSP), RILSP's vertex offset error is obviously less. It faithfully resembles the shape of the original mesh well due to it considers more control vertexes (its mask of regular vertex concludes 14 vertexes). The experiments show that RILSP with sharp feature detection and implementation gets the better mesh quality and low offset compensation compared to above others simplification methods. In addition, in future, it can be applied to the large-scale point cloud model simplification and other fields.
提出了一种基于逆插值环细分(RILSP)的锐特征网格化简方法。结合改进的蝴蝶细分中异常顶点的处理,扩展了环路细分掩模,从而将传统的环路细分算法改进为插值细分。利用插值环细分的逆操作,简化了复杂的三维网格;渐进网格是由初始网格和一系列顶点偏移生成的。该算法减少了正则点相对逆蝶细分的补偿运算,大大减少了简化和重构。同样,反向蝴蝶细分算法通过考虑更多的控制顶点,减少了常规的点补偿操作,与现有的反向环路细分相比,大大减少了简化和重构。此外,通过牺牲少量的时间来计算较小的顶点偏移量来补偿边缘点相对于中心点的偏移量,该方法具有高传输速度和低偏移量的优点。对重构过程中的顶点补偿进行无损可逆的简化和重构。与Luo的反向蝴蝶细分过程(Reverse Butterfly Subdivision Process, RBSP)相比,RILSP在顶点更新过程中取消了偶顶点的偏移补偿,显著提高了网格化简速度。与Luo的逆环细分过程(RLSP)相比,RILSP的顶点偏移误差明显减小。由于它考虑了更多的控制顶点(它的规则顶点掩码共有14个顶点),它忠实地类似于原始网格的形状。实验表明,与上述几种简化方法相比,采用锐利特征检测和实现的RILSP方法获得了更好的网格质量和较低的偏移补偿。此外,在未来,它还可以应用于大规模点云模型简化等领域。
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引用次数: 7
Prediction of Landslide Displacement Using EMD-PSO-ELM with Multiple Factors 多因素EMD-PSO-ELM预测滑坡位移
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00048
Ying Zhu, Li Zhou, Honggao Deng, Xiao Nan
This study demonstrates a model for the prediction of active landslide displacement based on the extreme learning machine (ELM) with multiple factors. The particle swarm optimization (PSO) model is selected to optimize the parameters of ELM. Firstly, the landslide displacement sequence which has been monitored is divided into several components developed by the empirical mode decomposition (EMD). Secondly, from the analysis of the basic characteristics of a landslide, this research acquires a series of main influencing factors. Thirdly, each landslide displacement component respectively is predicting by the multi-factor PSO-ELM model. Then, all landslide displacement components are added up as the forecasting result. The model is first trained and then evaluated by using data from a case study of shuping landslide triggered by seasonal rainfall in China. Performance comparisons of EMD-PSO-ELM model with PSO-ELM model are presented. The experimental results illustrate that the multi-factor EMD-PSO-ELM model can efficiently measure the landslide displacement behavior.
提出了一种基于多因素极值学习机(ELM)的活动滑坡位移预测模型。采用粒子群优化(PSO)模型对ELM参数进行优化。首先,利用经验模态分解(EMD)将监测到的滑坡位移序列划分为若干分量;其次,通过对滑坡基本特征的分析,得出了一系列主要影响因素。再次,利用多因素PSO-ELM模型分别预测各滑坡位移分量。然后将所有滑坡位移分量相加作为预测结果。首先对模型进行了训练,然后以中国季节性降雨引发的树坪滑坡为例对模型进行了评估。比较了EMD-PSO-ELM模型与PSO-ELM模型的性能。实验结果表明,多因素EMD-PSO-ELM模型能够有效地测量滑坡位移特性。
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引用次数: 3
Doppler Cycle Slip Detection and Repair of Low Sampling Rate 低采样率的多普勒周跳检测与修复
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00028
Yuanfa Ji, Xizi Jia, Xiyan Sun, Suqing Yan, Sunyong Wu, Shouhua Wang, X. Gan
In the cycle slip detection and repair of satellite navigation and positioning, the Doppler observation is protected from the cycle slip, which can assist the carrier phase data for cycle slip detection. However, as the sampling rate decreases, the correlation between the errors of the epochs also decreases, and the cycle slip detection capability is significantly reduced. To solve this problem, the author proposes a method of detecting and repairing Doppler cycle slip for low sampling rate. The method first uses the Lagrange interpolation algorithm to interpolate the low sampling rate Doppler observations to the 1s sampling interval, and performs polynomial fitting on the interpolated values to obtain Doppler values with less noise. Finally, the Doppler value extrapolated by the polynomial fit is subtracted from the interpolated Doppler value to obtain the cycle slip value. The simulation example that using GPS data for solution analysis shows that the detection accuracy of the new method is about 3 times and 4 times higher than the 5s and 10s sampling interval of the traditional Doppler integration method, and the detection accuracy is increased by 20% and 30% respectively.
在卫星导航定位的周跳检测与修复中,多普勒观测数据不受周跳的影响,可以辅助载波相位数据进行周跳检测。但随着采样率的降低,各次误差之间的相关性也随之降低,周跳检测能力明显降低。针对这一问题,提出了一种低采样率下多普勒频跳检测与修复方法。该方法首先利用拉格朗日插值算法将低采样率的多普勒观测值插值到1s采样间隔,并对插值值进行多项式拟合,得到噪声较小的多普勒值。最后,将多项式拟合外推的多普勒值与内插的多普勒值相减,得到周跳值。利用GPS数据进行解分析的仿真实例表明,新方法的检测精度比传统多普勒积分法的采样间隔为5s和10s的检测精度分别提高了3倍和4倍,检测精度分别提高了20%和30%。
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引用次数: 2
Design and Implementation of Concurrent Optimization Schemes for Sports Health Prediction Platform 运动健康预测平台并行优化方案的设计与实现
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00044
Yu Liu, Ruomei Wang, Y. Guan, Fan Zhou, Fuwei Zhang, Hang Su
Exercise simulation application is important to improve on the health and avoid the irreversible damage of human health. The application of sports health prediction software will be the characteristics of multi-users, and the calculation of human sports simulation will spend lots of time. Therefore, the concurrent optimization scheme of the platform is very important to guarantee the efficiency, usability and stability of multi-user platform. In this paper, a sports health prediction platform based on Client/Server architecture is reported, and a concurrent optimization scheme for this platform is designed and implemented. To solve this problem, a cluster on the server side is developed, a front-end server based on Nginx as a user access entry is built. Using the Spring Boot framework, human sports simulation model on back-end application servers is constructed, and Redis method is used to save information as simulation prediction results and users' preference clothing. The comparison results show that our method has better performances for the multi-user system. It is a suitable framework for the sports health simulation prediction application.
运动模拟的应用对于提高人体健康水平,避免对人体健康造成不可逆转的损害具有重要意义。运动健康预测软件的应用将具有多用户的特点,人体运动模拟的计算将花费大量时间。因此,平台的并发优化方案对于保证多用户平台的效率、可用性和稳定性至关重要。本文提出了一个基于Client/Server架构的运动健康预测平台,并设计并实现了该平台的并发优化方案。为了解决这个问题,我们在服务器端开发了一个集群,构建了一个基于Nginx的前端服务器作为用户访问入口。利用Spring Boot框架,在后端应用服务器上构建人体运动仿真模型,利用Redis方法将信息保存为仿真预测结果和用户偏好服装。对比结果表明,该方法在多用户系统中具有较好的性能。它是一种适合运动健康模拟预测应用的框架。
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引用次数: 2
Stability Analysis and Anti-windup Design for Multiple Time-Varying Delay Systems Subject to Actuator Saturation 执行器饱和下多时变延迟系统的稳定性分析与抗上发条设计
Pub Date : 2018-11-01 DOI: 10.1109/ICDH.2018.00050
Qian Zhang, Yilin Wu, Qiang Chen, Naizhou Wang
This paper investigates the characterization of stability regions for linear systems with multiple time-varying delays subject to actuator saturations through anti-windup strategies. In particular, the anti-windup synthesis considering both magnitude and rate limits of time-varying delays is addressed. Using the general sector condition and by quadratic Lyapunov functional, the stability conditions in linear matrix inequality (LMI) forms are presented. Hence, the estimation of the stability region is maximized by solving a convex optimization problem. At the end of the paper, numerical examples are shown to illustrate the effectiveness of the proposed methods and the trade-off between the size of the magnitude and rate limits of time-varying delays and the stability regions.
本文研究了多时变时滞线性系统在执行器饱和作用下的稳定性区域特征。特别地,讨论了同时考虑时变延迟的幅度和速率限制的抗缠绕综合。利用一般扇形条件和二次Lyapunov泛函,给出了线性矩阵不等式(LMI)形式下的稳定性条件。因此,通过求解一个凸优化问题来最大化稳定区域的估计。最后通过数值算例说明了所提方法的有效性,以及时变延迟的幅度和速率极限的大小与稳定区域之间的权衡。
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引用次数: 0
Welcome Message from the General Chairs 主席的欢迎辞
Pub Date : 2018-03-09 DOI: 10.1109/IWW-BCI.2018.8311483
Seong-Whan Lee, K. Müller
Implantable technologies have had major impacts in many medical fields such as cardiology (pacemakers, defibrillators, stents), sensory prosthesis (cochlear implant, retinal prosthesis) and treatment of diseases or impairments (Parkinson’s, diabetes). During the past decade revolutionary advances have entered the field of neuroscience/neurological disorders and their treatment (e.g. deep brain stimulators for Parkinson’s and seizure) and therapeutic treatments of limbs (upper and lower limb prosthesis). The cutting edge is the development of neuroprosthesis: namely building various interfaces to nerves, spinal cord and brain to control impaired limbs or prosthesis. This talk will review medical problems and exciting research opportunities for engineers to develop cutting edge technological solutions: MEMS electrodes, ultra low power VLSI circuits, wireless power and data transfer and power harvesting. While these technologies are essential, critical success will only come through complete integration of technology with the nervous system, and testing in vivo from animal models to humans. Two examples from our own will be discussed: neural prosthesis for control of prosthetic limb and bidirectional neural interface for nerves. Talk will conclude with the current status and challenges in the field of Brain Machine Interface.
植入式技术在许多医疗领域产生了重大影响,如心脏病学(起搏器、除颤器、支架)、感觉假体(人工耳蜗、视网膜假体)和疾病或损伤的治疗(帕金森病、糖尿病)。在过去十年中,在神经科学/神经系统疾病及其治疗(如帕金森病和癫痫的深部脑刺激器)和肢体治疗(上肢和下肢假体)领域取得了革命性进展。最前沿的是神经假肢的发展:即建立各种连接神经、脊髓和大脑的接口来控制受损的肢体或假肢。本次演讲将回顾医学问题和令人兴奋的研究机会,为工程师开发尖端技术解决方案:MEMS电极,超低功耗VLSI电路,无线电源和数据传输以及能量收集。虽然这些技术是必不可少的,但只有将技术与神经系统完全整合,并从动物模型到人类的体内测试,才能取得关键的成功。我们将讨论我们自己的两个例子:控制假肢的神经假体和神经的双向神经接口。最后讨论脑机接口领域的现状和面临的挑战。
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引用次数: 0
期刊
2018 7th International Conference on Digital Home (ICDH)
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