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2022 14th International Conference on Advanced Computational Intelligence (ICACI)最新文献

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Sentiment Analysis of Developers’ Comments on GitHub Repository: A Study 开发者对GitHub Repository评论的情感分析研究
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837754
Aman Kumar, Manish Khare, Saurabh Tiwari
The sentiments of developers play a major role in productivity, code quality, and satisfaction. The workload of the developers and their interest in a specific programming language affect the overall quality of the development process. Open source projects, where developers (or contributors) work based on their interest in contributing to the project apart of their routine work. In this paper, we are analysing the sentiments of the developers on GitHub while working on different open source projects. Our study mainly focuses on three aspects: (1) analysing the day of the week in which the comment was made by the developer, (2) emotions of the developer throughout the course of a project, and (3) emotions with different programming languages. The analysis was done by looking into the developer comments on issues, pull requests, and comments for the repository. Our results show that projects developed on Monday’s tend to more negative emotion. Additionally, comments written in issues have higher negative polarity in their sentimental content, and projects developed in Java and Python have more positive comments as compared to C and C++.
开发人员的情绪在生产力、代码质量和满意度方面起着重要作用。开发人员的工作量和他们对特定编程语言的兴趣会影响开发过程的整体质量。开源项目,开发人员(或贡献者)根据他们对项目贡献的兴趣来工作,而不是他们的日常工作。在本文中,我们将分析GitHub上开发人员在不同开源项目上工作时的情绪。我们的研究主要集中在三个方面:(1)分析开发人员发表评论的一周中的哪一天,(2)开发人员在整个项目过程中的情绪,(3)不同编程语言的情绪。分析是通过查看开发人员对问题、拉取请求和对存储库的评论来完成的。我们的研究结果表明,周一开发的项目倾向于更多的负面情绪。此外,在issue中写的评论在情感内容上具有更高的消极极性,而用Java和Python开发的项目与C和c++相比,有更多的积极评论。
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引用次数: 0
Stock Price Forecast Based on LSTM and DDQN 基于LSTM和DDQN的股票价格预测
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837594
Na Wu, Zongwu Ke, Lei Feng
The prediction of time series data is very difficult. For example, the price of stocks belongs to time series. Small fluctuations in society, politics, economy and culture may affect the stocks in the stock market. In the stock market, it is very important for people to have a general judgment on stocks. Therefore, the study of stocks has practical significance. This experiment confirms that the results are affected by the data set and statesize. Statesize is predicted by the closing price of several days.On the premise that the appropriate size of statesize makes the final profit the highest, and on the premise that improved algorithm of Q value based on DQN adds regularization (DDQN), it is proved that under different data sets, adding Long Short-Term Memory (LSTM) and full connection layer are better than only full connection layer. DQN is composed of neural network and Q-learning. Q-learning is a basic algorithm in reinforcement learning. And it is proved that DDQN algorithm is better than DQN on the premise that the appropriate statesize makes the final profit the highest, and on the premise of adding regularization and LSTM. Finally, it is also proved that under certain preconditions, the combination of LSTM and DDQN is better than only DQN and full connection layer. The only indicator of this experiment is the total profit. At the same time, this paper uses the closing price to predict.
时间序列数据的预测是非常困难的。例如,股票价格属于时间序列。社会、政治、经济和文化的微小波动都可能影响股票市场中的股票。在股票市场中,人们对股票有一个大致的判断是非常重要的。因此,对股票的研究具有现实意义。实验证实了结果受数据集和状态的影响。国产化是由几天的收盘价预测的。在适当的状态大小使最终收益最高的前提下,在基于DQN的Q值改进算法添加正则化(DDQN)的前提下,证明了在不同的数据集下,添加长短期记忆(LSTM)和全连接层比只添加全连接层效果更好。DQN由神经网络和q学习组成。Q-learning是强化学习中的一种基本算法。在适当的状态化使最终收益最高的前提下,在加入正则化和LSTM的前提下,证明了DDQN算法优于DQN算法。最后,还证明了在一定的前提条件下,LSTM与DDQN的结合优于仅使用DQN和全连接层。这个实验的唯一指标是总利润。同时,本文采用收盘价进行预测。
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引用次数: 1
New Results on Finite-Time Synchronization of Delayed Fuzzy Neural Networks 延迟模糊神经网络有限时间同步的新结果
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837603
Changqing Long, Houping Dai, Guodong Zhang, Junhao Hu
This paper explores the finite-time synchronization issue of a class of delayed fuzzy neural networks (DFNNs) by constructing new Lyapunov functional. Under the novel adaptive controller, sufficient conditions are derived to assure the finite-time synchronization of the considered DFNNs. In addition, the fuzzy logics are taken into accounted in the proposed network model, which complements and extends some of the existing results where the fuzzy logics or time delays are not considered. In the end, the validity of the derived synchronization results are verified by simulation examples.
本文通过构造新的Lyapunov泛函,探讨了一类延迟模糊神经网络的有限时间同步问题。在该自适应控制器下,导出了保证所考虑的dfnn有限时间同步的充分条件。此外,本文提出的网络模型考虑了模糊逻辑,补充和扩展了现有的一些不考虑模糊逻辑或时滞的结果。最后,通过仿真算例验证了推导的同步结果的有效性。
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引用次数: 0
Recurrent Neural Networks with Fractional Order Gradient Method 分数阶梯度法递归神经网络
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837518
Honggang Yang, Rui Fan, Jiejie Chen, Mengfei Xu
In view of the possibility that Recurrent Neural Network(RNN)’s stochastic gradient descent method will converge to the local optimum problem, two fractional stochastic gradient descent methods are proposed in this paper. The methods respectively use the fractional order substitution derivative part defined by Caputo and the fractional order substitution difference form defined by Riemann Liouville to improve the updating method of network parameters. Combining with the gradient descent characteristics, the influence of fractional order on the training results is discussed, and two adaptive order adjustment methods are proposed. Experiments on MNIST and FashionMNIST datasets show that the fractional stochastic gradient optimization algorithm can improve the classification accuracy and training speed of recurrent neural network.
针对递归神经网络(RNN)的随机梯度下降方法收敛于局部最优问题的可能性,提出了两种分数阶随机梯度下降方法。分别利用Caputo定义的分数阶替换导数部分和Riemann Liouville定义的分数阶替换差分形式对网络参数的更新方法进行改进。结合梯度下降特征,讨论了分数阶对训练结果的影响,提出了两种自适应阶数调整方法。在MNIST和FashionMNIST数据集上的实验表明,分数阶随机梯度优化算法可以提高递归神经网络的分类精度和训练速度。
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引用次数: 3
Asymptotic Bipartite Synchronization of Coupled Neural Networks Via Quantized Control 基于量化控制的耦合神经网络渐近二部同步
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837729
Ting Liu, Junhong Zhao, Peng Liu, Jian Yong, Shulong Fan, Junwei Sun
This paper addresses the bipartite synchronization of coupled neural networks with time-varying delay. By introducing an effective quantized controller, the bipartite synchronization of coupled neural networks with time-varying delay is realized and sufficient conditions for assuring the bipartite synchronization are derived in virtue of a Halanay inequality. Moreover, the bipartite synchronization of coupled neural networks without delay via quantized controller is also taken into account in corollary as a special case. In the end, a numerical example is provided to demonstrate the correctness of theoretical results.
研究了时变时滞耦合神经网络的二部同步问题。通过引入有效的量化控制器,实现了时变时滞耦合神经网络的二部同步,并利用Halanay不等式导出了保证二部同步的充分条件。此外,作为一种特例,在推论中还考虑了通过量化控制器实现无延迟耦合神经网络的二部同步。最后,通过数值算例验证了理论结果的正确性。
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引用次数: 0
An Improved Graph Neural Network Method Using Relative Position Information for Session-based Recommendation 基于相对位置信息的改进图神经网络会话推荐方法
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837599
Shuai Zhang, Yujie Xiao, Mingze Li, Xiaowei Li, Benhui Chen
Session-based recommendation mainly solves the recommendation problem in the anonymous scene, which is a challenging task. In recent years, most methods based on graph neural network (GNN) have ignore the location information of neighboring items. So we propose a graph aggregation method that introduces relative location information to capture this information. Specifically, we use two methods to learn item embedding, the location graph aggregation method is mainly used to capture the location relationship information between neighbors, and common graph aggregation method is mainly used to capture higher-order relationship information between items. Finally, we construct a session recommendation model and demonstrate the effectiveness of the proposed method on three datasets.
基于会话的推荐主要解决匿名场景下的推荐问题,这是一项具有挑战性的任务。近年来,大多数基于图神经网络(GNN)的方法都忽略了相邻物品的位置信息。因此,我们提出了一种引入相对位置信息的图聚合方法来捕获这些信息。具体来说,我们使用了两种方法来学习项目嵌入,位置图聚合法主要用于捕获邻居之间的位置关系信息,普通图聚合法主要用于捕获项目之间的高阶关系信息。最后,我们构建了会话推荐模型,并在三个数据集上验证了该方法的有效性。
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引用次数: 0
Finite-time Anti-synchronization of Memristor Oscillation System 忆阻振荡系统的有限时间反同步
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837669
Fei Wei, Guici Chen, Lei Yu
This paper investigates the finite-time anti-synchronization problem for a class of memristor oscillation circuit systems. Firstly, a 4th order memristor chaotic circuit system is derived using a quadratic nonlinear activated magneto-controlled memristor instead of the Chua diode in the Chua circuit. Then, a suitable controller is designed utilizing Lyapunov stability theory to drive the drive-response systems to finite-time anti-synchronization. Furthermore, the derived synchronization criterion is related to the system parameters. Therefore, the results obtained are more general and extend previous work. Finally, a numerical example is given and simulated to verify the validity of the results obtained.
研究了一类忆阻振荡电路系统的有限时间反同步问题。首先,用二次非线性激活磁控忆阻器代替蔡二极管,推导了一个四阶忆阻混沌电路系统。然后,利用李雅普诺夫稳定性理论设计合适的控制器,实现驱动-响应系统的有限时间反同步。此外,导出的同步准则与系统参数有关。因此,所得结果更具有一般性,是前人研究的延伸。最后给出了数值算例并进行了仿真,验证了所得结果的有效性。
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引用次数: 0
Boosting Adversarial Attack Transferability via Random Block Shuffle 通过随机分组洗牌提高对抗性攻击的可转移性
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837674
Hanwen Liu, Bingrong Xu, Yin Sheng, Zhigang Zeng
An interesting property of deep convolutional neural networks is their weakness to adversarial examples, which can deceive the models with subtle perturbations. Though adversarial attack algorithms have accomplished excellent performance in the white-box scenario, they frequently display a low attack success rate in the black-box scenario. Various transformation-based attack methods are shown to be powerful to enhance the transferability of adversarial examples. In this work, several novel transformation-based attack methods that integrate with the Random Block Shuffle (RBS) and Ensemble Random Block Shuffle (ERBS) mechanisms are come up with to boost adversarial transferability. First of all, the RBS calculates the gradient of the shuffled input instead of the original input. It increases the diversity of adversarial perturbation’s gradient and makes the original input’s information more invisible for the model. Based on the RBS, the ERBS is proposed to decrease gradient variance and stabilize the update direction further, which integrates the gradient of transformed inputs. Moreover, by incorporating various gradient-based attack methods with transformation-based methods, the adversarial transferability could be additionally improved fundamentally and relieve the overfitting problem. Our best attack method arrives an average success rate of 85.5% on two normally trained models and two adversarially trained models, which outperforms existing baselines.
深度卷积神经网络的一个有趣的特性是它们对对抗性示例的弱点,对抗性示例可以用细微的扰动欺骗模型。尽管对抗性攻击算法在白盒场景中取得了优异的表现,但在黑盒场景中往往表现出较低的攻击成功率。各种基于转换的攻击方法被证明是强大的,以提高对抗性示例的可转移性。在这项工作中,提出了几种新的基于转换的攻击方法,这些方法集成了随机块洗牌(RBS)和集成随机块洗牌(ERBS)机制,以提高对抗可转移性。首先,RBS计算洗牌后的输入而不是原始输入的梯度。它增加了对抗扰动梯度的多样性,使原始输入信息对模型更加不可见。在此基础上,提出了ERBS算法,通过对变换后输入的梯度进行集成,进一步减小梯度方差,稳定更新方向。此外,通过将各种基于梯度的攻击方法与基于变换的方法相结合,可以从根本上提高对抗可转移性,缓解过拟合问题。我们的最佳攻击方法在两个正常训练模型和两个对抗训练模型上的平均成功率为85.5%,优于现有的基线。
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引用次数: 0
A Unified Weighted MMD For Unsupervised Domain Adaptation 无监督域自适应的统一加权MMD
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837581
Zhansong Ma, Bingrong Xu, Lei Wang, Hanwen Liu, Zhigang Zeng
Unsupervised domain adaptation (UDA) recognizes unlabeled domain data by using the classifier learned from another domain. Previous works mainly focus on domain-level alignment that usually ignores the class-level information, resulting in the samples of different classes being too close to be classified correctly. To tackle this challenge, we design a unified weighted maximum mean discrepancy (MMD) metric method, that measures the differences in empirical distributions of two domains by calculating the weights of different sample pairs adaptively. The unified weighted MMD method is proposed which combines the class-level alignment with domain-level alignment, making full use of intra-domain, inter-domain, intra-class, and inter-class information with adaptive weights, and it is easy to implement. Experiment results demonstrate that our method can obtain superior results from two standard UDA datasets Office-31 and ImageCLEF-DA, compared with other UDA approaches.
无监督域自适应(UDA)利用从其他域学习到的分类器来识别未标记的域数据。以往的工作主要集中在领域级对齐上,往往忽略了类级信息,导致不同类的样本过于接近而无法正确分类。为了解决这一问题,我们设计了一种统一的加权最大平均差异(MMD)度量方法,该方法通过自适应计算不同样本对的权重来度量两个域经验分布的差异。提出了统一的加权MMD方法,将类级对齐与领域级对齐结合起来,充分利用域内、域间、类内、类间的信息和自适应权值,易于实现。实验结果表明,在Office-31和ImageCLEF-DA两个标准UDA数据集上,与其他UDA方法相比,我们的方法可以获得更好的结果。
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引用次数: 1
Automatic Pantograph Health Status Report Generation Based on Dense Captioning 基于密集标题的受电弓运行状况自动生成报告
Pub Date : 2022-07-15 DOI: 10.1109/icaci55529.2022.9837656
Xinqiang Yin, Xiukun Wei, Zhaoxin Li, Dehua Wei, Qingfeng Tang
The safety and reliability of the pantograph are critical and essential maintenance tasks in the railway transportation system. The majority of previous efforts proposed intelligent detection methods for achieving rapid and accurate inspection of the pantograph's health status. However, no research has been conducted on the automatic generation of pantograph health status reports, which is the primary reference basis for maintenance decisions. In this paper, in the light of the successful work of DenseCap, a pantograph image captioning model (PanCap for short) is proposed, which replaces VGG-16 with ResNet-50-FPN as the backbone to extract richer image features. In addition, Focal Loss and Transformer are used in PanCap to improve the description performance by addressing the problems of classification imbalance and dependent description. Evaluate the Visual Genome (VG) and pantograph image dataset, and the effectiveness of the proposed method is demonstrated by the experimental results.
受电弓的安全性和可靠性是铁路运输系统中至关重要的维护任务。以前的大部分工作都提出了智能检测方法,以实现对受电弓健康状态的快速准确检测。然而,受电弓健康状态报告的自动生成是维护决策的主要参考依据,目前还没有相关研究。本文在借鉴DenseCap成功工作的基础上,提出了一种受电图图像字幕模型(PanCap),以ResNet-50-FPN代替VGG-16作为主干,提取更丰富的图像特征。此外,通过解决分类不平衡和依赖描述的问题,在PanCap中使用焦损和变压器来提高描述性能。对视觉基因组(VG)和受电弓图像数据集进行了评估,实验结果证明了该方法的有效性。
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引用次数: 0
期刊
2022 14th International Conference on Advanced Computational Intelligence (ICACI)
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