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Recognition of Hotspot Words for Disease Symptoms Incorporating Contextual Weight and Co-Occurrence Degree 结合上下文权重和共现程度识别疾病症状热点词汇
4区 计算机科学 Q3 Computer Science Pub Date : 2024-04-05 DOI: 10.1155/2024/7863381
Qingxue Liu, Lifang Wang, Yuan Chang, Jixuan Zhang
Identifying hotspot words associated with disease symptoms is paramount for disease prevention and diagnosis. In this study, we propose a novel method for hotspot word recognition in disease symptoms, integrating contextual weights and co-occurrence information. First, we establish the MDERank model, which incorporates contextual weights. This model identifies words that align well with comprehensive weights, forming a collection of disease symptom words. Next, we construct a graph network for disease symptom words within each time period. Utilizing the graph attention network model, we incorporate word co-occurrence degree to identify potential hotspot words associated with disease symptoms. We conducted experiments using user-generated posts from the Dingxiangyuan Forum as our data source. The results demonstrate that our proposed method significantly improves the extraction quality of disease symptom words compared to other existing methods. Furthermore, the performance of our constructed recognition model for disease symptom hotspot words surpasses that of alternative models.
识别与疾病症状相关的热点词汇对于疾病的预防和诊断至关重要。在本研究中,我们提出了一种整合上下文权重和共现信息的疾病症状热点词识别新方法。首先,我们建立了包含上下文权重的 MDERank 模型。该模型可识别出与综合权重吻合度较高的词语,从而形成疾病症状词语集合。接下来,我们为每个时间段内的疾病症状词构建一个图网络。利用图注意力网络模型,我们结合词语共现程度来识别与疾病症状相关的潜在热点词语。我们使用定襄园论坛的用户生成帖子作为数据源进行了实验。结果表明,与其他现有方法相比,我们提出的方法显著提高了疾病症状词的提取质量。此外,我们构建的疾病症状热点词识别模型的性能也超过了其他模型。
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引用次数: 0
An Example of Modelica–LabVIEW Communication Usage to Implement Hardware-in-the-Loop Experiments 使用 Modelica-LabVIEW 通信实现硬件在环实验的示例
4区 计算机科学 Q3 Computer Science Pub Date : 2024-02-05 DOI: 10.1155/2024/9648349
Massimo Ceraolo, Mirko Marracci
Modelica is a very powerful language to simulate a very large set of systems, including electrical, thermal, mechanical, fluidic, control, and has already been used very extensively for several purposes, as the several Modelica conferences testify. Despite of this large literature, no paper seems to be available regarding the use of Modelica for real-time applications or hardware-in-the loop (HIL). This is a field where applications may be very fruitful. In this paper, the possibility of creating mixed software–hardware experiences (i.e., HIL), through combination of a Modelica program, the related simulation tool, a LabVIEW program, and the corresponding hardware is demonstrated. This demonstration is made using as an example a partial simulator of an electric vehicle running in a stand-alone PC, which communicates via User Datagram Protocol (UDP) packets with another PC running the LabVIEW program, which in turn is physically connected with the hardware-under-test. The obtained results are satisfying, given the inherent delay times due to the UDP communication.
Modelica 是一种非常强大的语言,可以模拟包括电气、热、机械、流体、控制在内的大量系统,并已被广泛用于多种用途,多次 Modelica 会议就是最好的证明。尽管有如此多的文献,但似乎还没有关于 Modelica 用于实时应用或硬件在环 (HIL) 的论文。在这一领域的应用可能会硕果累累。本文展示了通过结合 Modelica 程序、相关仿真工具、LabVIEW 程序和相应硬件,创建软硬件混合体验(即 HIL)的可能性。该演示以在独立 PC 中运行的电动汽车部分模拟器为例,该模拟器通过用户数据报协议(UDP)数据包与另一台运行 LabVIEW 程序的 PC 进行通信,而 LabVIEW 程序又与被测硬件进行物理连接。考虑到 UDP 通信固有的延迟时间,所获得的结果令人满意。
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引用次数: 0
Deep Neural Network-Based Cloth Collision Detection Algorithm 基于深度神经网络的布料碰撞检测算法
4区 计算机科学 Q3 Computer Science Pub Date : 2024-01-17 DOI: 10.1155/2024/7889278
Yanxia Jin, Zhiru Shi, Jing Yang, Yabian Liu, Xingyu Qiao, Ling Zhang
The quality of collision detection algorithm directly affects the performance of the whole simulation system. To address the low efficiency and low accuracy in detecting the collisions of flexible cloths in virtual environments, this paper proposes an oriented bounding box (OBB) algorithm with a simplified model, tree structure for a root-node double bounding box, and continuous collision detection algorithm incorporating an OpenNN-based neural network optimization. First, for objects interacting with the cloths with more complex modeling, the model is simplified with a surface simplification algorithm based on the quadric error metrics, and the simplified model is used to construct an OBB. Second, a bounding box technique commonly used for collision detection is improved, and a root-node double bounding box algorithm is proposed to reduce the construction time for the bounding box. Finally, neural networks are used to optimize the continuous collision detection algorithm, as neural networks can efficiently process large amounts of data and remove disjoint collision pairs. An experiment shows that the construction of an OBB using the simplified model is almost identical to that of the original model, but the taken to construct the OBB is reduced by a factor of approximately 2.7. For the same cloth, it takes 5.51%–11.32% less time to run the root-node double bounding box algorithm than the traditional-hybrid bounding box algorithm. With an average removal rate nearly identical to that of the traditional filtering method, the elapsed time is reduced by 7%–11% by using the continuous collision detection algorithm based on an OpenNN neural network optimization. The simulation results are realistic and in line with the requirements for real-time cloth simulations.
碰撞检测算法的质量直接影响整个仿真系统的性能。针对虚拟环境中柔性布碰撞检测效率低、准确率低的问题,本文提出了一种简化模型的定向边界框(OBB)算法、根节点双边界框的树形结构以及基于 OpenNN 神经网络优化的连续碰撞检测算法。首先,对于建模较为复杂的与布相互作用的物体,采用基于二次方误差度量的曲面简化算法对模型进行简化,并利用简化后的模型构建 OBB。其次,改进了碰撞检测中常用的边界框技术,并提出了根节点双边界框算法,以减少边界框的构建时间。最后,利用神经网络来优化连续碰撞检测算法,因为神经网络可以高效处理大量数据并移除不相关的碰撞对。实验表明,使用简化模型构建 OBB 与使用原始模型构建 OBB 几乎相同,但构建 OBB 所需的时间缩短了约 2.7 倍。对于相同的布,根节点双边界框算法比传统混合边界框算法节省 5.51%-11.32% 的时间。在平均去除率与传统过滤方法几乎相同的情况下,使用基于 OpenNN 神经网络优化的连续碰撞检测算法所需的时间减少了 7%-11%。仿真结果真实可靠,符合实时布料仿真的要求。
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引用次数: 0
Study on Contribution of Different Journal Evaluation Indicators to Impact Factor Based on Machine Learning 基于机器学习的不同期刊评价指标对影响因子的贡献研究
4区 计算机科学 Q3 Computer Science Pub Date : 2023-12-30 DOI: 10.1155/2023/3198385
Yan Ma, Yingkun Han, Haonan Zeng, Lei Ma
Sci-Tech journals have long served as platforms for academic communication and the collision of ideas, facilitating advanced inventions and major discoveries in science. The speed of development and future prospects of a field in the current era can often be reflected by the quality and quantity of cutting-edge papers published in Sci-Tech journals within that field. Currently, the impact factor of Sci-Tech journals is a widely recognized journal evaluation index that comprehensively reflects the quality and influence of the journals under evaluation. However, traditional journal evaluation methods based on statistical formulas, while relatively simple and fast, have certain limitations. They are not comprehensive enough and do not support the comparison between journals from different disciplines. In recent times, researchers have delved into using multiple suitable indicators for comprehensive journal evaluation, attempting to understand the role each indicator plays in the evaluation process, such as the rank sum ratio. Our paper presents a new dataset constructed from data from journals across various fields obtained from the China Wanfang Literature Platform. We endeavor to explore a series of novel journal evaluation methods based on machine learning, including deep learning models. With these 9 methods, we aim to determine the contribution of 17 journal evaluation indicators to the impact factor and identify important factors that can further enhance the quality and influence of Sci-Tech journals, which has great guiding significance for the future development of journals.
长期以来,科技期刊一直是学术交流和思想碰撞的平台,促进了科学领域的先进发明和重大发现。一个领域在当今时代的发展速度和未来前景,往往可以通过该领域科技期刊上发表的前沿论文的质量和数量反映出来。目前,科技期刊的影响因子是公认的期刊评价指标,能够全面反映被评价期刊的质量和影响力。然而,基于统计公式的传统期刊评价方法虽然相对简单快捷,但也存在一定的局限性。它们不够全面,也不支持不同学科期刊之间的比较。近来,研究者们开始深入研究使用多种合适的指标进行期刊综合评价,试图了解每个指标在评价过程中所起的作用,如排名总和比。本文介绍了一个新的数据集,该数据集由中国万方数据平台上获取的各领域期刊数据构建而成。我们努力探索一系列基于机器学习(包括深度学习模型)的新型期刊评价方法。通过这9种方法,我们旨在确定17个期刊评价指标对影响因子的贡献,并找出能够进一步提升科技期刊质量和影响力的重要因素,这对期刊的未来发展具有重要的指导意义。
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引用次数: 0
Image Segmentation of Triple-Negative Breast Cancer by Incorporating Multiscale and Parallel Attention Mechanisms 结合多尺度和并行注意力机制进行三阴性乳腺癌图像分割
4区 计算机科学 Q3 Computer Science Pub Date : 2023-12-16 DOI: 10.1155/2023/6629189
Qian Zhang, Junbiao Xiao, Bingjie Zheng
Breast cancer is a highly prevalent cancer. Triple-negative breast cancer (TNBC) is more likely to recur and metastasize than other subtypes of breast cancer. Research on the treatment of TNBC is of great importance, and accurate segmentation of the breast lesion area is an important step in the treatment of TNBC. Currently, the gold standard for tumor segmentation is still sketched manually by doctors, which requires expertise in the field of medical imaging and consumes a great deal of doctors’ time and energy. Automatic segmentation of breast cancer not only reduces the burden of doctors but also improves work efficiency. Therefore, it is of great significance to study the automatic segmentation technique for breast cancer lesion regions. In this paper, a deep-learning-based automatic segmentation algorithm for TNBC images is proposed. The experimental data were dynamic contrast-enhanced magnetic resonance imaging TNBC dataset provided by the Cancer Hospital of Zhengzhou University. The experiments were analyzed by comparing several models with UNet, Attention-UNet, ResUNet, and SegNet and using evaluation indexes such as Dice score and Iou. Compared to UNet, Attention-UNet, ResUNet, and SegNet, the proposed method improved the Dice score by 2.1%, 1.54%, 0.88%, and 9.65%, respectively. The experimental results show that the proposed deep-learning-based TNBC image segmentation model can effectively improve the segmentation performance of TNBC tumors.
乳腺癌是一种高发癌症。与其他亚型乳腺癌相比,三阴性乳腺癌(TNBC)更容易复发和转移。对 TNBC 的治疗研究具有重要意义,而准确分割乳腺病灶区域是治疗 TNBC 的重要一步。目前,肿瘤分割的金标准仍是由医生手工勾画,这需要医学影像领域的专业知识,耗费医生大量的时间和精力。乳腺癌的自动分割不仅能减轻医生的负担,还能提高工作效率。因此,研究乳腺癌病灶区域的自动分割技术具有重要意义。本文提出了一种基于深度学习的 TNBC 图像自动分割算法。实验数据为郑州大学附属肿瘤医院提供的动态对比度增强磁共振成像 TNBC 数据集。实验通过比较 UNet、Attention-UNet、ResUNet 和 SegNet 几种模型,并使用 Dice score 和 Iou 等评价指标进行分析。与 UNet、Attention-UNet、ResUNet 和 SegNet 相比,所提方法的 Dice 分数分别提高了 2.1%、1.54%、0.88% 和 9.65%。实验结果表明,所提出的基于深度学习的 TNBC 图像分割模型能有效提高 TNBC 肿瘤的分割性能。
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引用次数: 0
Grey Interest Chain Identification and Control Model for Government Investment Engineering Projects Based on Node Identification 基于节点识别的政府投资工程项目灰色利益链识别与控制模型
4区 计算机科学 Q3 Computer Science Pub Date : 2023-11-14 DOI: 10.1155/2023/3372820
Lin Deng, Yaping Wu, Xianjun Chen, Tian Li, Yun Chen
In the bidding process of government investment engineering projects, collusion between the government and bidders occurs repeatedly, which seriously affects the quality of engineering projects and the effectiveness of the government investment. Therefore, it is necessary to analyze and discuss the collusion between the government and bidders in government investment engineering projects, so as to provide a healthy and sustainable environment for the government investment engineering bidding market. There are two main types of collusion in engineering bidding: horizontal collusion and vertical collusion, and this paper focuses on the vertical collusion process in the engineering bidding process. A conceptual framework of the grey interest chain based on three stages of benefit creation, benefit distribution, and benefit realization was established, 15 major nodes in the grey interest chain were identified, and a grey interest chain control model was constructed, which further identified and classified the nodes into four levels: key nodes, important nodes, general nodes, and unimportant nodes. Finally, through the application of the model in the case, measures such as establishing a cracking mechanism for grey resource integration, increasing the supervision of grey interest chain, and strengthening post-bid audit are proposed. Measures such as including the preparation of bidding documents into the work assessment system and entrusting consulting units or third parties to prepare bidding documents are proposed to establish a crack mechanism for grey resource integration. In the benefit distribution stage, the penalties for the government and the bidders can be appropriately increased, the responsibilities of enterprises and project leaders can be implemented in the system on a reciprocal basis, and a perfect reputation mechanism information can be established. At the stage of benefit realization, the bidding system should be improved and post-bid audit should be strengthened to increase the difficulty of grey benefit realization. This paper will provide a reference for the prevention and governance of vertical collusion in bidding and tendering.
在政府投资工程项目招投标过程中,政府与投标人之间的串通屡屡发生,严重影响了工程项目的质量和政府投资的效益。因此,有必要对政府投资工程项目中政府与投标人之间的串通行为进行分析和探讨,从而为政府投资工程招标投标市场提供一个健康、可持续的环境。工程投标中的合谋主要有两种类型:水平合谋和垂直合谋,本文主要研究工程投标过程中的垂直合谋过程。建立了基于利益创造、利益分配和利益实现三个阶段的灰色利益链概念框架,识别了灰色利益链中的15个主要节点,构建了灰色利益链控制模型,并将这些节点进一步识别并划分为关键节点、重要节点、一般节点和不重要节点4个层次。最后,通过该模型在案例中的应用,提出了建立灰色资源整合破解机制、加大灰色利益链监管力度、加强标后审计等措施。提出将招标文件编制纳入工作考核体系,委托咨询单位或第三方编制招标文件等措施,建立灰色资源整合破解机制。在利益分配阶段,可以适当加大对政府和投标人的处罚力度,企业和项目负责人的责任在制度中相互落实,建立完善的信誉信息机制。在效益实现阶段,应完善招标制度,加强标后审计,增加灰色效益实现的难度。本文将为投标投标纵向串谋的预防和治理提供参考。
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引用次数: 0
Credit-Risk Prediction Model Using Hybrid Deep—Machine-Learning Based Algorithms 基于混合深度机器学习算法的信用风险预测模型
4区 计算机科学 Q3 Computer Science Pub Date : 2023-11-06 DOI: 10.1155/2023/6675425
Tamiru Melese, Tesfahun Berhane, Abdu Mohammed, Assaye Walelgn
Credit-risk prediction is one of the challenging tasks in the banking industry. In this study, a hybrid convolutional neural network—support vector machine/random forest/decision tree (CNN—SVM/RF/DT) model has been proposed for efficient credit-risk prediction. We proposed four classifiers to develop the model. A fully connected layer with soft-max trained using an end-to-end process makes up the first classifier and by deleting the final fully connected with soft-max layer, the other three classifiers—a SVM, RF, and DT classifier stacked after the flattening layer. Different parameter values were considered and fine-tuned throughout testing to select appropriate parameters. In accordance with the experimental findings, a fully connected CNN and a hybrid CNN with SVM, DT, and RF, respectively, achieved a prediction performance of 86.70%, 98.60%, 96.90%, and 95.50%. According to the results, our suggested hybrid method exceeds the fully connected CNN in its ability to predict credit risk.
信用风险预测是银行业最具挑战性的任务之一。本文提出了一种卷积神经网络支持向量机/随机森林/决策树(CNN-SVM /RF/DT)混合模型,用于有效的信用风险预测。我们提出了四个分类器来发展模型。使用端到端过程训练具有soft-max的完全连接层构成第一个分类器,通过删除最后一个具有soft-max的完全连接层,其他三个分类器- SVM, RF和DT分类器堆叠在平坦层之后。在整个测试过程中,考虑并微调了不同的参数值,以选择合适的参数。根据实验结果,全连接CNN和SVM、DT、RF混合CNN的预测性能分别为86.70%、98.60%、96.90%和95.50%。结果表明,我们提出的混合方法在预测信用风险的能力上超过了全连接CNN。
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引用次数: 0
Network Traffic Anomaly Detection Model Based on Feature Reduction and Bidirectional LSTM Neural Network Optimization 基于特征约简和双向LSTM神经网络优化的网络流量异常检测模型
4区 计算机科学 Q3 Computer Science Pub Date : 2023-11-03 DOI: 10.1155/2023/2989533
Hanqing Jiang, Shaopei Ji, Guanghui He, Xiaohu Li
Aiming at the problems of large data dimension, more redundant data, and low accuracy in network traffic anomaly detection, a network traffic anomaly detection model (FR-APPSO BiLSTM) based on feature reduction and bidirectional long short-term memory (LSTM) neural network optimization is proposed. First, the feature dimensions are divided by hierarchical clustering according to the similarity distance between data features, and the features with high correlation are divided into the same feature subset. Second, an automatic encoder is used to reduce each feature subset, eliminating redundant information, and reducing the computational complexity of the detection data. Then, a particle swarm optimization algorithm based on adaptive updating of variables and dynamic adjustment of parameters (APPSO) is proposed, which is used to optimize the parameters of the bidirectional LSTM neural network (BiLSTM). Finally, the optimized BiLSTM is used as a classifier to model network traffic anomaly detection using the reduced feature data. Experiments based on NSL-KDD, UNSW-NB15, and CICIDS-2017 datasets show that the proposed FR-APPSO-BiLSTM model can effectively reduce data features, improve the accuracy of detection, and the performance of network traffic anomaly detection.
针对网络流量异常检测中存在的数据维数大、数据冗余多、准确率低等问题,提出了一种基于特征约简和双向长短期记忆(LSTM)神经网络优化的网络流量异常检测模型FR-APPSO BiLSTM。首先,根据数据特征之间的相似距离对特征维度进行分层聚类划分,将相关度较高的特征划分到同一特征子集中;其次,使用自动编码器对每个特征子集进行约简,消除冗余信息,降低检测数据的计算复杂度;然后,提出了一种基于变量自适应更新和参数动态调整的粒子群优化算法(APPSO),并将其用于双向LSTM神经网络(BiLSTM)的参数优化。最后,将优化后的BiLSTM作为分类器,利用约简后的特征数据对网络流量异常检测进行建模。基于NSL-KDD、UNSW-NB15和CICIDS-2017数据集的实验表明,本文提出的FR-APPSO-BiLSTM模型可以有效地减少数据特征,提高检测精度,提高网络流量异常检测性能。
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引用次数: 0
Retracted: Ice and Snow Sports Education Based on 5G Cloud Computing to Improve the Social Adaptability of Southern University Students 撤下:基于5G云计算的冰雪运动教育提高南方大学生社会适应能力
4区 计算机科学 Q3 Computer Science Pub Date : 2023-11-01 DOI: 10.1155/2023/9867894
Scientific Programming
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引用次数: 0
Retracted: Research on Network Layer Recursive Reduction Model Compression for Image Recognition 网络层递归约简模型压缩在图像识别中的研究
4区 计算机科学 Q3 Computer Science Pub Date : 2023-11-01 DOI: 10.1155/2023/9896261
Scientific Programming
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引用次数: 0
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Scientific Programming
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