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2020 11th International Conference on Awareness Science and Technology (iCAST)最新文献

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Utility pole extraction processing from point cloud data from 3D measurement and its applications 基于三维测量点云数据的电线杆提取处理及其应用
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319491
Zhiyi Gao, A. Doi, Toru Kato, H. Takahashi, Kenji Sakakibara, Tomonori Hosokawa, Masahiro Harada
In this study, we propose a method to automatically remove utility poles and electric parts from 3D measurement data of shopping streets and roads, and be used for the landscape simulation of underground utility poles construction at Suehiro-cho of Miyako City. In this method, utility poles were stably extracted automatically by using plural rectangular volumes, Hough transform, and two-dimensional Gaussian function. The efficiency of processing is improved by five times compared with the interactive method of removing the utility poles and the electric parts by the dialogue processing.
在本研究中,我们提出了一种从购物街和道路的三维测量数据中自动去除电线杆和电气部件的方法,并将其用于宫古市suehirocho地下电线杆建设的景观模拟。该方法利用复数矩形体积、霍夫变换和二维高斯函数对电线杆进行稳定的自动提取。与对话处理的电线杆和电气部件的交互去除方法相比,处理效率提高了5倍。
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引用次数: 0
An Enhanced Invasive Weed Optimization in Resource-Constrained Project Scheduling Problem 资源约束项目调度问题中的一种增强入侵杂草优化方法
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319493
Wei Cai, Haojie Chen, Jian Zhang
In this research, an enhanced invasive weed optimization (EIWO) has been proposed to solve resource-constrained project scheduling problem (RCPSP) which subjects to the makespan minimization. Firstly, a hybrid population initialization method is illustrated to improve the quality of initial solutions. Secondly, to enhance the local exploitation ability, a local search approach is embedded in the spatial dispersal process. Thirdly, an improved competitive exclusion based on acceptance probability is proposed. At the end of this article, EIWO is tested and verified by standard benchmark problems from PSPLIB. Compared with the existing algorithms through computer numerical experiments, the new EIWO algorithm is more effective and efficient in solving RCPSP.
本文提出了一种增强型入侵杂草优化算法(EIWO)来解决以最大完工时间最小化为目标的资源约束型项目调度问题。首先,提出了一种混合种群初始化方法,以提高初始解的质量。其次,在空间扩散过程中嵌入局部搜索方法,增强局部开发能力;第三,提出了一种改进的基于接受概率的竞争排除方法。在本文的最后,EIWO通过PSPLIB的标准基准问题进行了测试和验证。通过计算机数值实验,与现有算法相比,新的EIWO算法在求解RCPSP时更加有效和高效。
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引用次数: 0
A Visual-SLAM based Line Laser Scanning System using Semantically Segmented Images 基于视觉slam的语义分割图像行激光扫描系统
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319479
Zhengwu Shi, Qingxuan Lyu, Shu Zhang, Lin Qi, H. Fan, Junyu Dong
Integration of the line laser scanning system with visual SLAM for 3D mapping is conceptually attractive yet facing the difficulty with processing projected line laser, which is not only hard to be extracted from images captured under natural light, but also disrupts the feature tracking procedure in visual SLAM. This paper proposes a method of segmenting the target object and extracting the laser line to build an accurate and realistic 3D model by using a semantic segmentation method. First, we introduce adaptive thresholds for the recognized objects to solve the laser extraction problem. Second, we discard the extracted image features in the laser area for better pose estimation of visual SLAM. Finally, we complement the surface of lasers with the color information in the related objects of 3D mapping. In our experiments, we show that the proposed method can produce a dense colored 3D mapping and has higher performance than the traditional visual SLAM based laser scanning system.
将直线激光扫描系统与视觉SLAM相结合用于三维制图在概念上很有吸引力,但面临着投影直线激光处理的困难,不仅难以从自然光下捕获的图像中提取,而且会干扰视觉SLAM中的特征跟踪过程。本文提出了一种利用语义分割方法对目标物体进行分割并提取激光线以建立准确逼真的三维模型的方法。首先,对识别目标引入自适应阈值,解决激光提取问题;其次,我们将提取的图像特征丢弃在激光区域,以便更好地估计视觉SLAM的姿态。最后,我们用三维映射中相关物体的颜色信息对激光表面进行补充。实验结果表明,该方法可以生成密集的彩色三维映射,比传统的基于视觉SLAM的激光扫描系统具有更高的性能。
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引用次数: 0
Performance of Machine Learning Algorithms for IT Incident Management IT事件管理中机器学习算法的性能
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319487
Mohammad Agus Prihandono, R. Harwahyu, R. F. Sari
Incident Management is a part of managing IT services, improving services, and achieving organizational goals. IT incidents can be learned and predicted future incidents. This research compares the factors that cause incidents using initial machine learning techniques such as Random Forest, SVM, Multilayer perceptron, and the latest machine learning techniques such as RNN, LSTM, GRU, to predict IT incidents. Grid search is used to find the optimal parameter combination. 5-fold and 10-fold Cross-validation evaluates the model's optimal performance by dividing the dataset into training data and test data. The results show that the highest accuracy of 98.866% is produced by LSTM machine learning techniques at 5-fold and 10-fold cross-validation. SVM has the lowest accuracy of 97.837% made at 5-fold and 10-fold cross-validation.
事件管理是管理IT服务、改进服务和实现组织目标的一部分。IT事件可以学习和预测未来的事件。本研究使用随机森林、支持向量机、多层感知器等初始机器学习技术和RNN、LSTM、GRU等最新机器学习技术来预测IT事件,比较了导致事件的因素。采用网格搜索来寻找最优的参数组合。5-fold和10-fold交叉验证通过将数据集分为训练数据和测试数据来评估模型的最佳性能。结果表明,LSTM机器学习技术在5倍和10倍交叉验证下产生的准确率最高,达到98.866%。SVM在5次和10次交叉验证时准确率最低,为97.837%。
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引用次数: 1
Stock Market Trend Prediction and Investment Strategy by Deep Neural Networks 基于深度神经网络的股票市场趋势预测与投资策略
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319488
Mingze Shi, Qiangfu Zhao
This research is mainly about the prediction of the price change in the stock market. Instead of daily change, this paper analyzes the trend of price change for weeks by judging turning points. Deep neural networks will be used as the classifier of true and fake golden crosses to judge the growth trend of price change. Most stocks on the sample list have positive profits after simulated trading of 10 years. Based on the results we may conclude that deep neural networks are helpful to assist users positively for stock investment.
本研究主要是关于股票市场价格变化的预测。本文通过判断拐点来分析数周内价格变化的趋势,而不是每日变化。利用深度神经网络作为真假金叉的分类器,判断价格变化的增长趋势。样本名单上的大多数股票在模拟交易10年后都有正利润。研究结果表明,深度神经网络对用户进行股票投资具有积极的帮助作用。
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引用次数: 2
A Sequence-to-Sequence Model Based on Attention Mechanism for Wave Spectrum Prediction 基于注意机制的序列对序列波谱预测模型
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319473
Xiao Zeng, Lin Qi, Tong Yi, Tong Liu
Ocean wave spectrum are mainly estimated from wave surface records, and traditional methods involve physically-based modeling of wave dynamics and frequency analysis. In this paper, we employ machine learning strategy and propose a Seq2Seq (sequence to sequence) model which connects the encoder and decoder with an attention mechanism. This model can both effectively predict wave spectrum and be easily implemented. Experiments on numerical simulations show the feasibility of the proposed model in wave spectrum estimation and the accuracy comparing with traditional methods.
海浪谱的估计主要来自于波面记录,传统的方法包括基于物理的波浪动力学建模和频率分析。在本文中,我们采用机器学习策略并提出了一个Seq2Seq (sequence to sequence)模型,该模型通过注意机制将编码器和解码器连接起来。该模型既能有效地预测波浪谱,又易于实现。数值模拟实验证明了该模型在波浪谱估计方面的可行性和与传统方法相比的准确性。
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引用次数: 0
MwoA auxiliary diagnosis via RSN-based 3D deep multiple instance learning with spatial attention mechanism 基于空间注意机制的rsn三维深度多实例学习辅助诊断MwoA
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319486
Xiang Li, B. Wei, Tianyang Li, N. Zhang
Migraine without aura (MwoA) is the most typical migraine disease in the clinic, which is endangered to human health and challenging to diagnose. Developing the auxiliary diagnosis algorithms of MwoA based on functional connectivity (FC) changes from resting-state functional magnetic resonance imaging (rs-fMRI) is an important research domain. However, existing auxiliary diagnostic methods mainly adopt a seed-based correlation method to extract FC, which are easily affected by subjective factors. Moreover, those methods neglect the relationship between changes in FC and disease duration. In this paper, we report a weakly supervised learning method aiming to tackle those issues. We propose a resting-state brain network-based 3D deep multiple instance learning with spatial attention mechanism (R3D-DMILSAM) framework, where the patient-level label is allocated to the rs-fMRI data that view as multiple instances of a bag. R3D-DMILSAM uses the group information guided independent component analysis (GIG-ICA) to generate the subject-specific resting-state brain networks (RSNs). After that, the designed spatial attention-based 3D deep multiple instance learning (SA3D-DMIL) is trained to perform the diagnosis of MwoA. SA3D-DMIL can automatically generate several semantic deep instances and discovers abnormal RSNs using spatial attention mechanism. Extensive experimental results on the MwoA dataset show that R3D-DMILSAM achieves an overall accuracy of 88.80% and AUC of 94.70%. The visual network obtains high weight, which could be used as a potential biomarker for individualized diagnosis of MwoA.
无先兆偏头痛(MwoA)是临床上最典型的偏头痛疾病,危害人体健康,诊断难度大。基于静息状态功能磁共振成像(rs-fMRI)的功能连通性变化开发MwoA的辅助诊断算法是一个重要的研究领域。然而,现有的辅助诊断方法主要采用基于种子的相关方法提取FC,容易受到主观因素的影响。此外,这些方法忽略了FC变化与病程之间的关系。在本文中,我们报告了一种弱监督学习方法,旨在解决这些问题。我们提出了一个基于静息状态大脑网络的三维深度多实例学习空间注意机制(R3D-DMILSAM)框架,其中患者级别的标签被分配给rs-fMRI数据,这些数据被视为一个袋子的多个实例。R3D-DMILSAM使用群体信息引导的独立成分分析(giga - ica)来生成受试者特定的静息状态脑网络(rsn)。然后,训练设计的基于空间注意的三维深度多实例学习(SA3D-DMIL)进行MwoA诊断。sa3d - dil可以自动生成多个语义深度实例,并利用空间注意机制发现异常的rsn。在MwoA数据集上的大量实验结果表明,R3D-DMILSAM的总体准确率为88.80%,AUC为94.70%。视觉网络获得了较高的权重,可作为MwoA个体化诊断的潜在生物标志物。
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引用次数: 0
Skeleton Guided Conflict-Free Hand Gesture Recognition for Robot Control 面向机器人控制的无冲突手势识别
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319483
Jiahao Xu, Jian Li, Shu Zhang, Cui Xie, Junyu Dong
The skeleton analysis introduced by Kinect has been an efficient way for interaction. Skeleton analysis interaction is more intuitive and aligns better with human natural behaviors compared with traditional approaches. However, skeleton analysis often has the problem of producing conflict gesture identifications if two interaction movements are similar. Additionally, it always mistakenly recognizes some unconscious or intentional body movements as positive gestures. To this end, we proposed a new interaction method enhanced by both vision algorithms and deep learning. An improved residual neural network is employed to recognize gestures which are then used for distinguishing similar body movements. A combined human-computer interaction scheme is proposed which includes three main components: (a) a hand shape segmentation approach enhanced by skin color detection and skeleton joint tracking, (b) the deep learning augmented detection for changes of gestures and (c) a deep learning-based gesture command recognition for robot control. Experiments are conducted using the proposed method for robot interaction. The results demonstrate that unconscious body movements can be accurately identified. Similar body movements can also be distinguished robustly. The proposed method can run in real-time with competitive performance.
Kinect引入的骨骼分析是一种有效的交互方式。与传统方法相比,骨架分析交互更直观,更符合人类的自然行为。然而,如果两个交互动作相似,骨架分析通常会产生冲突手势识别的问题。此外,它总是错误地将一些无意识或有意的身体动作识别为积极的手势。为此,我们提出了一种结合视觉算法和深度学习的交互方法。改进的残差神经网络用于识别手势,然后用于区分相似的身体动作。提出了一种组合人机交互方案,该方案包括三个主要部分:(A)基于肤色检测和骨骼关节跟踪的手部形状分割方法;(b)基于深度学习的手势变化增强检测;(c)基于深度学习的机器人控制手势命令识别。利用该方法进行了机器人交互实验。结果表明,无意识的身体运动是可以准确识别的。相似的身体动作也能被清晰地分辨出来。该方法可以实时运行,具有较好的性能。
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引用次数: 1
Rotation Axis Calibration of Laser Line Rotating-Scan System for 3D Reconstruction 三维重建激光线旋转扫描系统旋转轴标定
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319495
Zhihao Zhu, Jian Yang, Xianglong Wang, Guanqi Qi, Chuang Wu, H. Fan, Lin Qi, Junyu Dong
The laser line rotating-scan system has been a popular method for 3D reconstruction. But the rotating axis of the scanner usually does not coincide with the camera origin point, which makes this technique a bit more complex. This paper proposes a rotation axis calibration method to solve the problem for more accurate 3D imaging. The calibration parameters are defined as the external parameters (rotation and translation) between the camera coordinate system and the world coordinate system of the rotation axis. With the rotation axis calibration, 3D results of a single frame are transformed into the world coordinate system of the rotation axis. Finally, we realize multi-frame splicing only with the rotation angle provided by the scanner. Experiments on real data show our method is basically correct and practical.
激光线旋转扫描系统已成为一种流行的三维重建方法。但扫描仪的旋转轴通常与相机原点不重合,这使得该技术有点复杂。本文提出了一种旋转轴标定方法,以解决更精确的三维成像问题。标定参数定义为摄像机坐标系与旋转轴世界坐标系之间的外部参数(旋转和平移)。通过旋转轴标定,将单帧的三维结果转换为旋转轴的世界坐标系。最后,仅利用扫描器提供的旋转角度就实现了多帧拼接。实际数据实验表明,该方法基本正确、实用。
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引用次数: 2
Modeling Low-risk Actions from Multivariate Time Series Data Using Distributional Reinforcement Learning 使用分布式强化学习从多变量时间序列数据建模低风险行为
Pub Date : 2020-12-07 DOI: 10.1109/iCAST51195.2020.9319476
Yosuke Sato, Jianwei Zhang
In recent years, investment strategies on financial markets using deep learning have attracted a significant amount of research attention. The objective of these studies is to obtain investment action that has a low risk and increases profit. On the other hand, Distributional Reinforcement Learning (DRL) expands the action-value function to a discrete distribution in reinforcement learning, which can control risk. However, DRL has not yet been used to learn investment action. In this study, we construct a low-risk investment trading model using DRL. This model is backtested on Nikkei 225 dataset and compared with Deep Q Network (DQN). We evaluate performance in terms of final asset amounts, their standard deviation, and the Sharpe ratio. The experimental results show that the proposed DRL-based method can learn low-risk actions with increasing profit, outperforming the compared method DQN.
近年来,使用深度学习的金融市场投资策略吸引了大量的研究关注。这些研究的目的是获得低风险和增加利润的投资行为。另一方面,分布式强化学习(distributed Reinforcement Learning, DRL)将强化学习中的动作值函数扩展为离散分布,实现了对风险的控制。然而,DRL还没有被用来学习投资行为。在本研究中,我们利用DRL构建了一个低风险的投资交易模型。该模型在日经225数据集上进行了回测,并与Deep Q Network (DQN)进行了比较。我们根据最终资产金额、其标准差和夏普比率来评估业绩。实验结果表明,基于drl的方法可以学习低风险且收益增加的动作,优于DQN方法。
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引用次数: 0
期刊
2020 11th International Conference on Awareness Science and Technology (iCAST)
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