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Research on the trading settlement mechanism of electricity market 电力市场交易结算机制研究
Lutao Zhang, Songsong Chen, Ying Zhou, Haijing Zhang, Y. Li
Along with the continuous development and deepening reform of the Chinese power market, the main body of the power market trading is increasing day by day, the marketization of the transaction electricity has increased substantially, and the types and cycles of the transactions also become more diversified, which puts forward higher requirements for the settlement of transactions in the Chinese power market. This paper is based on the research of the current development status of Chinese power market transactions settlement, explores the effective operation mode of the power market transactions settlement mechanism, which can promote the establishment of the power market transactions settlement mechanism better and faster.
随着中国电力市场改革的不断发展和深化,电力市场交易的主体日益增多,交易用电的市场化程度大幅提高,交易的类型和周期也更加多样化,这对中国电力市场的交易结算提出了更高的要求。本文在研究我国电力市场交易结算发展现状的基础上,探索电力市场交易结算机制的有效运行模式,能够更好更快地推动电力市场交易结算机制的建立。
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引用次数: 0
Prediction of traffic accident duration based on N-BEATS 基于N-BEATS的交通事故持续时间预测
Y. He, Senchang Zhang, Peiyao Zhong, Zhenliang Li
The prediction of traffic accident duration is the basis of highway emergency management. Timely and accurate prediction of traffic accident duration can provide a reliable basis for road guidance and rescue organization. This paper discusses the traffic accident duration prediction method of N-BEATS model in detail. Through the change of sliding window size and the continuous adjustment of the number of iterations, the appropriate parameters are found to produce a good prediction effect. The dataset used in this paper is US Accidents, a nation-wide dataset of traffic accidents covering 49 states in the US. The experimental results show that compared with the classical time series prediction models such as Bi-LSTM, SVM, RNN-GRU and AttnAR, prediction of traffic accident duration model based on N-BEATS proposed in this paper is optimal in the three evaluation indicators of RMSE, MAE and SD, which shows that the model has the highest prediction accuracy and good performance.
交通事故持续时间预测是公路应急管理的基础。及时准确地预测交通事故持续时间,可以为道路引导和救援组织提供可靠的依据。本文详细讨论了N-BEATS模型的交通事故持续时间预测方法。通过滑动窗口大小的变化和迭代次数的不断调整,找到合适的参数来产生良好的预测效果。本文使用的数据集是US Accidents,这是一个覆盖美国49个州的全国性交通事故数据集。实验结果表明,与Bi-LSTM、SVM、RNN-GRU和AttnAR等经典时间序列预测模型相比,本文提出的基于N-BEATS的交通事故持续时间模型在RMSE、MAE和SD三个评价指标上都是最优的,表明该模型具有最高的预测精度和良好的预测性能。
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引用次数: 0
Monitoring method for verification data of electric energy meters 电能表检定数据的监测方法
Yu Xing, Xianguang Dong, Yanling Sun, Min Li, Ling Zhang
As a metering device, the electric energy meter is used to detect the electric quantity at each detection point. This paper studies a monitoring method and system, storage medium, and terminal for the verification data of electric energy meters, involving the field of electric power. The main purpose is to improve the existing problem that the operating data in the verification process cannot be grasped in real time, and there is a risk of damaging the pipeline hardware, thus reducing the monitoring efficiency. The process includes analyzing the target verification items of the electric energy meter in the verification work order and determine the monitoring components matching the target verification items. After starting the verification operation of the electric energy meter, send the data acquisition command to the hardware monitoring subunit, and send the data recording command to the software monitoring subunit. If the problems found in the detection cannot be grasped at the first time, the pipeline hardware may be burnt, and other risks may be caused. Obtain the data collected by the hardware monitoring subunit and the operation status data recorded by the software monitoring subunit. Reduced monitoring is a problem of work efficiency. In reality, work efficiency is very important, especially in terms of risks and hidden dangers. Extract the hardware monitoring features of image data and/or infrared signals, and the software monitoring features of operation status data, and monitor the hardware monitoring features and software monitoring features based on the data status monitoring model to determine the monitoring results of verification data.
电能表作为一种计量装置,用于检测各检测点的电量。本文研究了一种涉及电力领域的电能表检定数据的监测方法与系统、存储介质和终端。主要目的是改善目前存在的验证过程中运行数据无法实时掌握,存在损坏管道硬件的风险,从而降低监控效率的问题。该过程包括对检定工单中电能表的目标检定项目进行分析,确定与目标检定项目相匹配的监控部件。启动电能表校验操作后,向硬件监控子单元发送数据采集命令,向软件监控子单元发送数据记录命令。如果在检测中发现的问题不能第一时间抓住,可能会烧坏管道硬件,造成其他风险。获取硬件监控子单元采集的数据和软件监控子单元记录的运行状态数据。监控减少是一个影响工作效率的问题。在现实中,工作效率是非常重要的,特别是在风险和隐患方面。提取图像数据和/或红外信号的硬件监控特征,以及运行状态数据的软件监控特征,并根据数据状态监控模型对硬件监控特征和软件监控特征进行监控,确定验证数据的监控结果。
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引用次数: 0
Prediction of traffic accident impact range based on CatBoost ensemble algorithm 基于CatBoost集成算法的交通事故影响范围预测
Songwei Zhang, Haibo Liu, Yundi Yang, Senchang Zhang, Zhongshan Zhang, Chunyu Wang, Mengnan Wang
Aiming at the problem that the traditional algorithm is easy to overfitting, which leads to low prediction accuracy of the model. This paper designs a traffic accident impact range prediction model based on CatBoost ensemble algorithm. The model uses linear fitting for range prediction and uses the ordered boosting method to introduce the prior term and weight coefficient. It can automatically adjust dynamically in each calculation, so as to effectively avoid the condition offset and gradient deviation and reduce the overfitting. Under small-scale training, the algorithm can achieve high accuracy prediction and has strong generalization ability.
针对传统算法容易过拟合,导致模型预测精度低的问题。本文设计了一种基于CatBoost集成算法的交通事故影响范围预测模型。该模型采用线性拟合进行距离预测,并采用有序增强方法引入先验项和权重系数。每次计算自动动态调整,有效避免条件偏移和梯度偏差,减少过拟合。在小规模训练下,该算法能够达到较高的预测精度,具有较强的泛化能力。
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引用次数: 0
Unified polarimetric method for cross-domain face attacks detection 跨域人脸攻击检测的统一极化方法
Yalin Huang, Yu Tian, Kunbo Zhang, Kaiwen Zhang, Zhenan Sun
Face spoofing detection techniques have performed well in the digital and physical domains separately. However, existing methods do not work well when both types of spoofing attacks need to be resisted at the same time. We propose a new polarization-based unified spoofing detection method for cross-domain face spoofing attacks. With our cross-domain unified spoofing detection framework, our methods can automatically detect and identify face spoofing attacks in both digital and physical domains. In addition, we build a new face anti-spoofing dataset containing polarized modality. We first provide a method for generating polarimetric face images from visible images, which are used to provide a digital domain spoofing attack. Then, we fake faces through physical methods such as photo and mask. In our new dataset, extensive experiments show that our method has better performance and robustness in face cross-domain attack detection and can still defend against cross-domain face attacks with a very small training data size.
人脸欺骗检测技术分别在数字和物理领域表现良好。然而,当需要同时抵抗两种类型的欺骗攻击时,现有的方法并不能很好地工作。针对跨域人脸欺骗攻击,提出了一种基于极化的统一欺骗检测方法。通过跨域统一欺骗检测框架,我们的方法可以自动检测和识别数字域和物理域的人脸欺骗攻击。此外,我们建立了一个包含极化模态的新的人脸抗欺骗数据集。我们首先提供了一种从可见图像生成偏振人脸图像的方法,该方法用于提供数字域欺骗攻击。然后,我们通过照片和面具等物理方法来假脸。在我们的新数据集中,大量的实验表明,我们的方法在人脸跨域攻击检测方面具有更好的性能和鲁棒性,并且在很小的训练数据规模下仍然可以防御跨域人脸攻击。
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引用次数: 0
An improved feature point selection algorithm for point cloud data 一种改进的点云数据特征点选择算法
Xuedong Jing, Xueqi Shan, Yuwei Zhang
At present, curve and surface fitting is widely used in three-dimensional measurement, industrial design, archaeology, medicine and other fields, and curve and surface fitting has also become a hot spot and a difficulty at present. The surface point cloud data scanned by high-precision 3D laser scanning instruments on site are often complex, and the data are relatively dense for curves. If the approximation fitting is used, complex information may not be reflected enough, and the interpolation fitting may produce over-fitting phenomenon. This paper proposes a feature point selection algorithm, which is more targeted for dense point cloud data than the general cubic B-spline interpolation algorithm. The feature point selection algorithm can retain feature points and remove non-feature points and minimize the number of fitting segments on the premise of meeting the accuracy requirements of the final fitting curve.
目前,曲线曲面拟合广泛应用于三维测量、工业设计、考古、医学等领域,曲线曲面拟合也成为当前的热点和难点。现场高精度三维激光扫描仪器扫描的地表点云数据往往比较复杂,曲线数据相对密集。如果采用近似拟合,复杂信息可能反映不够,插值拟合可能产生过拟合现象。本文提出了一种特征点选择算法,该算法比一般的三次b样条插值算法对密集点云数据更有针对性。特征点选择算法在满足最终拟合曲线精度要求的前提下,保留特征点,去除非特征点,尽量减少拟合段的个数。
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引用次数: 0
Interactive control system of variable force feedback robot based on spring model 基于弹簧模型的变力反馈机器人交互控制系统
Liang Wang, Long Xue, Jiqiang Huang
Due to the high cost, complex construction, and immature algorithm of existing force feedback equipment, the majority of it is utilized in precise industries such as telemedicine and aerospace. Nevertheless, specific industrial production tasks require force feedback devices immediately. In order to make force feedback equipment extensively employed in the field of industrial robots, a spring-based variable force machine manpower feedback control system is developed. The force state of the robot in the working environment is communicated back to the manipulator via spring deformation, allowing the manipulator to intuitively sense the force environment in the working environment, hence facilitating robot control. The experiment demonstrates that the force feedback control system based on this method has a stable feedback effect and a simple structure, as well as the ability to realize the feedback of varied forces based on diverse application circumstances, which has a high promotional and practical value.
由于现有的力反馈设备成本高、结构复杂、算法不成熟,大部分用于远程医疗、航空航天等精密行业。然而,特定的工业生产任务需要力反馈装置立即。为了使力反馈设备广泛应用于工业机器人领域,研制了一种基于弹簧的变力机械人力反馈控制系统。机器人在工作环境中的受力状态通过弹簧变形传递回机械手,使机械手能够直观地感知工作环境中的受力环境,从而便于机器人控制。实验表明,基于该方法的力反馈控制系统反馈效果稳定,结构简单,能够根据不同的应用环境实现不同力的反馈,具有较高的推广和实用价值。
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引用次数: 0
Neural network-based comfort evaluation method for handheld sports products 基于神经网络的手持运动产品舒适性评价方法
Xiaoyu Tang, Ruiqiu Zhang
In order to provide a set of quantitative evaluation of the comfort of hand-held sports products, this study preliminarily constructed the comfort evaluation index system of hand-held sports products from the perspectives of performance, tactile characteristics, quality and appearance, physical stimulation, discomfort, morphological characteristics, user demographic characteristics and hand characteristics. Secondly, 165 groups of data were collected through the experiment, and factor analysis was used to reduce the dimension of the original index. Then neural network was used to establish the mapping relationship between the evaluation index and the comfort evaluation, and the evaluation model of the comfort of hand-held sports products was obtained. The results show that the relative error between the predicted value and the actual value of the network model is basically less than 5% in the practical application of the evaluation method taking the badminton racket as an example, which reflects that the comfort evaluation method can effectively reduce the correlation between the original indexes, achieve the accurate evaluation of the comfort of products, and verify the effectiveness and feasibility of the evaluation method. The combination of neural network and factor analysis can quantitatively analyze and evaluate the comfort of hand-held sports products and provide reliable suggestions for manufacturers to design and produce more comfortable products in the form of data.
为了提供一套对手持运动产品舒适性的定量评价,本研究从性能、触觉特征、质量与外观、物理刺激、不适程度、形态特征、用户人口学特征、手部特征等方面初步构建了手持运动产品舒适性评价指标体系。其次,通过实验收集了165组数据,采用因子分析对原始指标进行降维。然后利用神经网络建立评价指标与舒适度评价之间的映射关系,得到手持运动产品的舒适度评价模型。结果表明,在评价方法的实际应用中,以羽毛球拍为例,网络模型预测值与实际值的相对误差基本小于5%,这反映出舒适度评价方法能够有效降低原有指标之间的相关性,实现对产品舒适度的准确评价,验证了评价方法的有效性和可行性。神经网络与因子分析相结合,可以定量分析和评估手持运动产品的舒适度,并以数据的形式为制造商设计和生产更舒适的产品提供可靠的建议。
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引用次数: 0
Multimodal sentiment analysis with BERT-ResNet50 基于BERT-ResNet50的多模态情感分析
Senchang Zhang, Yue He, Lei Li, Yaowen Dou
Aiming at the problem that the information difference between modalities in the current multimodal sentiment analysis model and the insufficient fusion between modalities lead to the low accuracy of network prediction, this paper designs a multimodal sentiment analysis model based on BERT-ResNet50. The model uses BERT and ResNet50 to extract text and image features respectively, fuses multi-modal information through the encoder layer of Transformer, and finally uses the Softmax layer to classify multi-modal information. The dataset used in this paper is the Twitter sarcasm public dataset. Through experiments, the BERT-ResNet50 model proposed in this paper is higher than the comparison models in accuracy, recall rate and F1 value, and the accuracy reaches 74.05%. Ablation experiments show that the accuracy of the model in multi-modal sentiment analysis is higher than that in single-modal sentiment analysis.
针对当前多模态情感分析模型中模态间信息差异大,模态间融合不充分导致网络预测准确率低的问题,设计了基于BERT-ResNet50的多模态情感分析模型。该模型分别使用BERT和ResNet50提取文本和图像特征,通过Transformer的编码器层融合多模态信息,最后使用Softmax层对多模态信息进行分类。本文使用的数据集为Twitter讽刺公开数据集。通过实验,本文提出的BERT-ResNet50模型在准确率、召回率和F1值上均高于比较模型,准确率达到74.05%。烧蚀实验表明,该模型在多模态情感分析中的准确率高于单模态情感分析。
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引用次数: 0
Job running time prediction algorithm based on classification and ensemble learning 基于分类和集成学习的作业运行时间预测算法
Xubo Kong, Dandan Zhang, Yu Zheng, Qing Ji
Backfill scheduling is a common scheduling strategy in high-performance computing systems that allows priority execution of low-priority jobs to make better use of available resources. Job running time is an important parameter that affects the performance of backfill scheduling algorithm. However, in order to avoid job killing due to lack of time, the running time requested by users is often several times higher than the actual running time, resulting in a certain degree of resource waste. In order to improve resource utilization, a new job running time prediction algorithm is proposed by combining classification and ensemble learning methods. The algorithm first classifies the historical job set according to the application type, then uses Jaccard coefficient to calculate the similarity between the jobs, and further classifies the jobs. At the same time, different integration models are constructed for the jobs of different application types. New jobs are categorized, and the class's integration model is used to predict the running time of the new job. The algorithm was tested on the historical job data of the National Supercomputing Center Kunshan, Hefei Advanced Computing Center and "Wuzhen Light" supercomputing Center and compared with GA-sim algorithm and IRPA algorithm. The experimental results show that compared with the IRPA algorithm, the average absolute error of the algorithm is improved by 60% on the three data sets on average. Compared with the GA-sim algorithm, the average prediction accuracy of the algorithm is improved by 20% on the three data sets on average. Through the in-depth analysis of the experimental results, the amplification method for the low estimation of long and short jobs is given.
回填调度是高性能计算系统中的一种常见调度策略,它允许优先执行低优先级作业,以便更好地利用可用资源。作业运行时间是影响回填调度算法性能的一个重要参数。但是,为了避免由于时间不足而导致作业终止,用户要求的运行时间往往比实际运行时间高出数倍,造成一定程度的资源浪费。为了提高资源利用率,提出了一种结合分类和集成学习方法的作业运行时间预测算法。该算法首先根据应用类型对历史作业集进行分类,然后利用Jaccard系数计算作业之间的相似度,进一步对作业进行分类。同时,为不同应用程序类型的作业构建了不同的集成模型。对新作业进行分类,并使用类的集成模型预测新作业的运行时间。该算法在国家超级计算中心昆山、合肥先进计算中心和乌镇光超级计算中心的历史作业数据上进行了测试,并与GA-sim算法和IRPA算法进行了比较。实验结果表明,与IRPA算法相比,该算法在三个数据集上的平均绝对误差平均提高了60%。与GA-sim算法相比,该算法在三个数据集上的平均预测精度平均提高了20%。通过对实验结果的深入分析,给出了长、短作业低估计的放大方法。
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引用次数: 0
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International Conference on Algorithms, Microchips and Network Applications
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