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2021 IEEE International Conference on Computer Science, Artificial Intelligence and Electronic Engineering (CSAIEE)最新文献

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Power Grid Fault Location Method Based on Pretraining of Convolutional Autoencoder 基于卷积自编码器预训练的电网故障定位方法
Ling Zheng, Peixin Xu, Jiayin Bai
In the power grid system, the accurate determination and precise positioning of faulty equipment is an important foundation for realizing the self-healing function of the power grid. With the increasing complexity of the power grid topology, traditional fault location methods are prone to misjudge the faulty equipment and the normal equipment in the station, causing problems such as low positioning accuracy and poor stability. To locate faulty equipment quickly and accurately, this paper proposes a power grid fault location method based on pre-training of convolutional autoencoder. The method is based on the synchronous phasor measurement unit (PMU), which converts its sequence data into images to reduce noise interference. The method pre-trains lots of samples by using convolutional autoencoder, and then uses a classifier to fine-tune small batches of balanced samples. Finally, the faulty equipment in the power grid can be accurately located by dividing the area multiple times and positioning the faulty equipment gradually. Experiments and simulations show that compared with other mainstream methods, this method has higher robustness and stability, can effectively alleviate the impact of data imbalance, and improve the accuracy and accuracy of faulty equipment location.
在电网系统中,对故障设备的准确判断和精确定位是实现电网自愈功能的重要基础。随着电网拓扑结构的日益复杂,传统的故障定位方法容易对故障设备和站内正常设备进行误判,造成定位精度低、稳定性差等问题。为了快速准确地定位故障设备,本文提出了一种基于卷积自编码器预训练的电网故障定位方法。该方法基于同步相量测量单元(PMU),将其序列数据转换成图像以减少噪声干扰。该方法使用卷积自编码器对大量样本进行预训练,然后使用分类器对小批量平衡样本进行微调。最后,通过多次划分区域,逐步定位故障设备,可以准确定位电网中的故障设备。实验和仿真表明,与其他主流方法相比,该方法具有更高的鲁棒性和稳定性,可以有效缓解数据不平衡的影响,提高故障设备定位的准确性和准确性。
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引用次数: 1
Research on C4.5 Algorithm Optimization For User Churn 针对用户流失的C4.5算法优化研究
Chao Deng, Zhaohui Ma
Decision tree is a kind of machine learning method which can decide a corresponding result according to the probability of different eigenvalues, The effective decision number constructed can provide help for our data analysis. The generation of decision tree is a recursive process, It mainly uses the optimal partition attribute as the corresponding tree node, and then uses various values of the attribute to construct branches. In this way, until the data reaches a certain purity, the leaf nodes are obtained, and a decision tree in accordance with the rules is constructed. Among the traditional decision tree algorithms, C4.5 algorithm has a gain rate because of its attribute division. This leads to another obvious disadvantage, that is, it has a preference for the attributes with a small number of values, so that the accuracy of the decision tree is often not particularly ideal. In view of this, this paper proposes an improved E-C4.5 algorithm, which combines information gain and information gain rate to generate a new attribute partition criterion. The attribute partition method greatly eliminates the shortcoming of C4.5 algorithm which has a preference for the attributes with a small number of values, and further improves the decision accuracy of decision tree generation. In this paper, the actual data sets are used to verify the accuracy of the decision tree generated by the improved algorithm compared with the traditional C4.5 algorithm.
决策树是一种根据不同特征值的概率来决定相应结果的机器学习方法,所构造的有效决策数可以为我们的数据分析提供帮助。决策树的生成是一个递归过程,主要是将最优分区属性作为对应的树节点,然后利用该属性的各种值构造分支。这样,直到数据达到一定的纯度,得到叶节点,并根据规则构造决策树。在传统的决策树算法中,C4.5算法由于其属性划分而具有一定的增益率。这导致了另一个明显的缺点,即它偏爱具有少量值的属性,因此决策树的准确性往往不是特别理想。鉴于此,本文提出了一种改进的E-C4.5算法,该算法结合信息增益和信息增益率生成新的属性划分准则。该属性划分方法极大地消除了C4.5算法偏爱值较少的属性的缺点,进一步提高了决策树生成的决策精度。本文利用实际数据集,对比传统C4.5算法,验证改进算法生成的决策树的准确性。
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引用次数: 1
CTR Prediction Model Using xDeepFM and Bayesian optimization 基于xDeepFM和贝叶斯优化的点击率预测模型
Yiying Zhang
With the development of internet, increasing people tends to consume online, which is convenient and timesaving. Taobao is the largest online shopping site in China. In this paper, we use the data from Taobao to predict the click-through-rate (CTR), an important metrics that measures the number of clicks advertisers receive on their ads per number of impressions. We introduce xDeepFM model to predict CTR and use Bayesian optimization to optimize. The xDeepFM model is a combined model, composed by DNN and CIN, like Wide&Deep. Based on it, the xDeepFM model enables to catch features of different dimensions: implicit high-order interactions and explicit high-order interactions. In addition, we use the Bayesian optimization to get the optimal hyperparameters. The metrics we used is Auc Roc, and the higher Auc-Roc is, the better performance the model will gain. The Auc Roc of our modle is 0.651 higher 0.031 and 0.012 respectively than LightGBM and DeepFM.
随着互联网的发展,越来越多的人倾向于网上消费,这是方便和节省时间。淘宝是中国最大的在线购物网站。在本文中,我们使用来自淘宝的数据来预测点击率(CTR),这是一个重要的指标,用来衡量广告商在每一次展示中收到的广告点击次数。我们引入xDeepFM模型来预测点击率,并使用贝叶斯优化进行优化。xDeepFM模型是一个组合模型,由DNN和CIN组成,就像Wide&Deep一样。在此基础上,xDeepFM模型能够捕捉不同维度的特征:隐式高阶交互和显式高阶交互。此外,我们使用贝叶斯优化来获得最优的超参数。我们使用的指标是Auc-Roc, Auc-Roc越高,模型的性能就越好。我们的模型的Auc Roc分别比LightGBM和DeepFM高0.031和0.012,分别为0.651。
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引用次数: 0
Video motions classification based on CNN 基于CNN的视频动作分类
Yue Luo, Boyuan Yang
There are more and more videos appearing on the internet these years, new ways should be developed to recognize and manage them. Since video is composed of images, this work builds a CNN network to do video classification. The work uses the UCF 101 dataset, which contains 101 different categories, to train the model. Then a simple CNN network containing five layers is built with PyTorch and trained with UCF 101 dataset on GPU. The result shows that it's underfitting and its accuracy won't be improved much by changing parameters. However, adding more layers, including the dropout layer and batchnorm layer can greatly improve its accuracy. Then a C3D method is also applied to improve the accuracy. Finally, the highest accuracy reaches 69 percentage. In this work, a simple and effective way to recognize actions in a small video is developed to help people supervise and manage the video resources online.
近年来,互联网上出现了越来越多的视频,应该开发新的方法来识别和管理它们。由于视频是由图像组成的,因此本工作构建了一个CNN网络来对视频进行分类。这项工作使用了包含101个不同类别的UCF 101数据集来训练模型。然后用PyTorch构建了一个包含五层的简单CNN网络,并在GPU上使用UCF 101数据集进行训练。结果表明,该方法存在欠拟合,改变参数对其精度的提高不大。然而,增加更多的层,包括dropout层和batchnorm层,可以大大提高其精度。然后采用C3D方法提高了精度。最后,最高准确率达到69%。本文提出了一种简单有效的小视频动作识别方法,以帮助人们对在线视频资源进行监督和管理。
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引用次数: 2
Res-Attention Net: An Image Dehazing Network 重新注意网络:一种图像去雾网络
Shuai Song, Ren-Yuan Zhang, Zhipeng Qiu, Jiawei Jin, Shangbin Yu
In the image dehazing task, there are three key subtasks need to be performed. The first one is extracting the finer scale features, e.g. the detail textures of objects, covered by haze. The second one is retaining the coarser scale features, e.g. the contours of objects, as complete as possible. And third one is fusing the finer scale features and the coarser scale features together. Aiming at the three points, we propose a single image dehazing network named Res-Attention Net based on the encoding-decoding structure similar to U -Net. The encoder and decoder of Res-Attention Net are designed for the objective that extracting the detail textures and retrieving the contours at the same time. We construct the encoder of the Res-Attention Net by the residual blocks (RBs) with different depths and downsampling for performing the first two subtasks, i.e. extracting the multiscale image features from the original hazy image. The decoder of the Res-Attention is based on the attention gates (AGs) and upsampling. The decoder can retrieve the coarser scale features from the output of the encoder and can also fuse them with the multiscale features from the encoder together. That is to say, the decoder is for performing the last two subtasks. The experimental results show that the Res-Attention Net proposed performs better than several state-of-the-art methods.
在图像去雾任务中,有三个关键的子任务需要完成。第一个是提取更精细的尺度特征,例如被雾霾覆盖的物体的细节纹理。第二种方法是尽可能完整地保留较粗的尺度特征,例如物体的轮廓。第三个是将细尺度特征和粗尺度特征融合在一起。针对这三点,我们提出了一种基于类似于U -Net的编码-解码结构的单幅图像去雾网络——re - attention Net。以提取细节纹理和提取轮廓为目标,设计了re - attention Net的编码器和解码器。我们通过不同深度的残差块(RBs)和下采样构造了re - attention Net的编码器,用于执行前两个子任务,即从原始模糊图像中提取多尺度图像特征。re - attention的解码器基于注意门(AGs)和上采样。解码器可以从编码器的输出中检索粗尺度特征,也可以将它们与编码器的多尺度特征融合在一起。也就是说,解码器是用来执行最后两个子任务的。实验结果表明,所提出的re - attention Net比目前几种方法的性能更好。
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引用次数: 3
Teacher-Student Network for Low-quality Remote Sensing Ship Detection 面向低质量遥感船舶探测的师生网络
Shitian He, H. Zou, Runlin Li, Xu Cao, Fei Cheng, Juan Wei
Most CNN-based detectors rely on high-quality images, and the detection performance may be damaged as the image quality decreases. To enhance ship detection for low-quality images, we propose a distillation network which utilize a “teacher” detector with high-quality input images to guide the training of the original “student” detector. In this way, the student detector can learn the advantage information from the teacher and thus achieves improved detection performance. We feed images with different sampling ratios to our network, and the experimental results on HRSC2016 dataset validate the effectiveness of our method. Moreover, we apply our method to different backbones, and the experimental results demonstrate the generality of our method.
大多数基于cnn的检测器依赖于高质量的图像,随着图像质量的下降,检测性能可能会受到影响。为了增强对低质量图像的船舶检测,我们提出了一种蒸馏网络,该网络利用具有高质量输入图像的“教师”检测器来指导原始“学生”检测器的训练。这样,学生检测器可以从老师那里学习到优势信息,从而提高检测性能。我们将不同采样比例的图像输入到网络中,在HRSC2016数据集上的实验结果验证了我们方法的有效性。并将该方法应用于不同的骨干网,实验结果证明了该方法的通用性。
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引用次数: 0
Application of Active Learning in Decoding 主动学习在解码中的应用
Yunfei Quan
Improved technology has resulted in numerous computing devices. The more people spend time interacting with these computing devices, the more we become interested in coming up with new interaction methods that could help to facilitate application of active learning in decoding with the computing devices. Application of active learning in decoding technology will help achieve the goal of this journal as it helps to overcome eye limitations in speed and efficiency. Application of Active Learning Decoding for Python3 programming language was mainly created because it was flexible, easy to extend, and developed some other small models. The machine learning algorithm in python is often lying beneath the scikit-learn python library. The user can easily modify and build another new model to predict the model learning algorithm. The model can also design a good and quality novel model algorithm that can be used more easily.
技术的改进产生了许多计算设备。人们花越多的时间与这些计算设备进行交互,我们就越有兴趣提出新的交互方法,这些方法可以帮助促进主动学习在计算设备解码中的应用。主动学习在解码技术中的应用将有助于实现本期刊的目标,因为它有助于克服眼睛在速度和效率方面的限制。主要创建了Python3编程语言的主动学习解码应用,因为它灵活,易于扩展,并开发了一些其他的小模型。python中的机器学习算法通常位于scikit-learn python库之下。用户可以很容易地修改和建立另一个新的模型来预测模型的学习算法。该模型还可以设计出质量好、使用方便的新型模型算法。
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引用次数: 0
K-means clustering algorithm and Python implementation K-means聚类算法和Python实现
BoKai Wu
K-means is a commonly used algorithm in machine learning. It is an unsupervised learning algorithm. It is regularly used for data clustering. Only the number of clusters are needed to be specified for it to automatically aggregate the data into multiple categories, the similarity between data in the same cluster is high, thus, the similarity of data in different clusters is low. K-means algorithm is a typical distance-based clustering algorithm. It takes distance as the evaluation index of similarity, that is, the closer the distance between two objects, the greater similarity. Clustering is also extremely extensive in practical applications, such as: market segmentation, social network analysis, organized computing clusters, and astronomical data analysis. This paper is my own attempt to make K-means code and API, using Python and Java to jointly complete a project. The Python is mainly used to write the framework of the core algorithm of K-means, and the Java to create experimental data. In this research report, I will describe the simple data model provided by K-means, as well as the design and implementation of K-means.
K-means是机器学习中常用的算法。这是一种无监督学习算法。它经常用于数据聚类。它只需要指定簇数就可以自动将数据聚合成多个类别,同一簇中的数据相似度高,因此不同簇中的数据相似度低。K-means算法是一种典型的基于距离的聚类算法。它以距离作为相似度的评价指标,即两个物体之间的距离越近,相似度越大。聚类在实际应用中也非常广泛,如:市场细分、社会网络分析、有组织的计算集群、天文数据分析等。本文是我自己尝试制作K-means代码和API,使用Python和Java共同完成的一个项目。主要使用Python编写K-means核心算法的框架,使用Java创建实验数据。在这篇研究报告中,我将描述K-means提供的简单数据模型,以及K-means的设计和实现。
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引用次数: 3
A multi-scale surface target recognition algorithm based on attention fusion mechanism 基于注意融合机制的多尺度表面目标识别算法
Runze Guo, Shaojing Su, Zhen Zuo, Bei Sun
With the growing demand for marine environment supervision in China, surface target recognition has attracted more attention. To address the problems of complex water scenes with scale changes, much background information and inability to focus on key features, this paper proposes a multi-scale surface target recognition algorithm based on attention fusion mechanism. First, the network extracts different features from surface targets by multi-scale convolutional neural network. Then, discriminative features are enhanced by the fusion of channel attention module and spatial attention module. Finally, the feature representation of surface targets is formed by a joint loss function with localization loss and category loss. Tests are conducted on the VOC2007 dataset and the self-built surface target dataset, and the results show that the algorithm outperforms than other typical recognition on surface targets.
随着中国海洋环境监测需求的不断增长,海面目标识别受到越来越多的关注。针对复杂水场景尺度变化大、背景信息多、重点特征无法集中的问题,提出了一种基于注意融合机制的多尺度水面目标识别算法。首先,利用多尺度卷积神经网络提取表面目标的不同特征;然后,通过融合通道注意模块和空间注意模块增强识别特征;最后,用包含局部损失和类别损失的联合损失函数来表示表面目标的特征。在VOC2007数据集和自建表面目标数据集上进行了测试,结果表明该算法在表面目标识别上优于其他典型算法。
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引用次数: 1
Resonating response makes people feel better: An empathetic protocol in dialogue system 共鸣反应让人感觉更好:对话系统中的移情协议
Mingwei Shi
Currently, the emotional research of dialogue systems is a hot topic. However, several works mainly focused on acquiring state-of-the-art performance in a dialogue system and paid less attention to the inner emotions' response and lacked interpretability of emotional response mechanism within a dialogue system. Hence, this work proposed an empathic protocol to address this issue via introducing an innovative element (Mirror neuron) from connectionism and neuroscience to gradually design an AMNN (Artificial mirror neuron network) in the dialogue system for clear interpretability firstly. Subsequently, this paper described an empathic protocol to produce and analyze responses between a user and an agent via the self-defined neural network that served as the Central Nervous System of a dialogue agent. By employing this protocol in a traffic-service application, users felt that their emotions were resonated with and understood and communicated with the dialogue agent proactively.
当前,对话系统的情感研究是一个热点。然而,有几部作品主要关注在对话系统中获得最先进的表演,而对内心情绪的反应关注较少,缺乏对对话系统中情绪反应机制的可解释性。因此,本工作提出了一个共情协议,通过引入连接主义和神经科学的创新元素(镜像神经元)来解决这个问题,首先在对话系统中逐步设计一个AMNN(人工镜像神经元网络),以明确可解释性。随后,本文描述了一种共情协议,通过自定义神经网络作为对话代理的中枢神经系统,产生和分析用户和代理之间的响应。通过在交通服务应用程序中使用该协议,用户感觉到他们的情绪被共鸣和理解,并主动与对话代理进行沟通。
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引用次数: 0
期刊
2021 IEEE International Conference on Computer Science, Artificial Intelligence and Electronic Engineering (CSAIEE)
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