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Polar Codes with Differential Phase Shift Keying for Selective Detect-and-Forward Multi-Way Relaying Systems 用于选择性检测和前向多路中继系统的带差分相移键控的极性编码
Pub Date : 2024-08-08 DOI: 10.3390/network4030015
Ruilin Ji, Harry Leib
Relaying with network coding forms a basis for a variety of collaborative communication systems. A linear block coding framework for multi-way relaying using network codes introduced in the literature shows great promise for understanding, analyzing, and designing such systems. So far, this technique has been used with low-density parity check (LDPC) codes and belief propagation (BP) decoding. Polar codes have drawn significant interest in recent years because of their low decoding complexity and good performance. Our paper considers the use of polar codes also as network codes with differential binary phase shift keying (DBPSK), bypassing the need for channel state estimation in multi-way selective detect-and-forward (DetF) cooperative relaying. We demonstrate that polar codes are suitable for such applications. The encoding and decoding complexity of such systems for linear block codes is analyzed using maximum likelihood (ML) decoding for LDPC codes with log-BP decoding and polar codes with successive cancellation (SC) as well as successive cancellation list (SCL) decoding. We present Monte-Carlo simulation results for the performance of such a multi-way relaying system, employing polar codes with different lengths and code rates. The results demonstrate a significant performance gain compared to an uncoded scheme. The simulation results show that the error performance of such a system employing polar codes is comparable to LDPC codes with log-BP decoding, while the decoding complexity is much lower. Furthermore, we consider a hard threshold technique at user terminals for determining whether a relay transmits or not. This technique makes the system practical without increasing the complexity and can significantly reduce the degradation from intermittent relay transmissions that is associated with such a multi-way relaying protocol.
使用网络编码的中继是各种协作通信系统的基础。文献中介绍的使用网络编码进行多向中继的线性块编码框架,为理解、分析和设计此类系统带来了巨大希望。迄今为止,这种技术已被用于低密度奇偶校验(LDPC)码和信念传播(BP)解码。近年来,极性码因其较低的解码复杂度和良好的性能而备受关注。我们的论文考虑将极性码也用作具有差分二进制相移键控(DBPSK)的网络码,从而在多路选择性检测和前向(DetF)合作中继中绕过信道状态估计的需要。我们证明了极地编码适用于此类应用。我们使用最大似然 (ML) 解码技术分析了线性块编码系统的编码和解码复杂性,包括 LDPC 码的对数-BP 解码,极性码的连续消隐 (SC) 解码和连续消隐列表 (SCL)解码。我们介绍了采用不同长度和码率的极性码的多路中继系统性能的蒙特卡洛仿真结果。结果表明,与未编码方案相比,该系统的性能大幅提升。仿真结果表明,这种采用极性编码的系统的误差性能可与采用对数-BP 解码的 LDPC 编码相媲美,而解码复杂度却低得多。此外,我们还考虑在用户终端采用硬阈值技术来确定中继是否发射。这种技术在不增加复杂性的情况下使系统实用化,并能显著降低与这种多向中继协议相关的间歇性中继传输带来的性能下降。
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引用次数: 0
A User Location Reset Method through Object Recognition in Indoor Navigation System Using Unity and a Smartphone (INSUS) 在使用 Unity 和智能手机的室内导航系统(INSUS)中通过物体识别重设用户位置的方法
Pub Date : 2024-07-22 DOI: 10.3390/network4030014
Evianita Dewi Fajrianti, Y. Panduman, Nobuo Funabiki, Amma Liesvarastranta Haz, Komang Candra Brata, S. Sukaridhoto
To enhance user experiences of reaching destinations in large, complex buildings, we have developed a indoor navigation system using Unity and a smartphone called INSUS. It can reset the user location using a quick response (QR) code to reduce the loss of direction of the user during navigation. However, this approach needs a number of QR code sheets to be prepared in the field, causing extra loads at implementation. In this paper, we propose another reset method to reduce loads by recognizing information of naturally installed signs in the field using object detection and Optical Character Recognition (OCR) technologies. A lot of signs exist in a building, containing texts such as room numbers, room names, and floor numbers. In the proposal, the Sign Image is taken with a smartphone, the sign is detected by YOLOv8, the text inside the sign is recognized by PaddleOCR, and it is compared with each record in the Room Database using Levenshtein distance. For evaluations, we applied the proposal in two buildings in Okayama University, Japan. The results show that YOLOv8 achieved mAP@0.5 0.995 and mAP@0.5:0.95 0.978, and PaddleOCR could extract text in the sign image accurately with an averaged CER% lower than 10%. The combination of both YOLOv8 and PaddleOCR decreases the execution time by 6.71s compared to the previous method. The results confirmed the effectiveness of the proposal.
为了提升用户在大型复杂建筑中到达目的地的体验,我们利用 Unity 和智能手机开发了一个名为 INSUS 的室内导航系统。它可以使用快速反应(QR)代码重置用户位置,以减少用户在导航过程中迷失方向的情况。然而,这种方法需要在现场准备大量 QR 码纸,在实施时造成额外负担。在本文中,我们提出了另一种重置方法,即利用对象检测和光学字符识别(OCR)技术识别现场自然安装的标识信息,从而减少负载。建筑物中存在大量标识,其中包含房间号、房间名和楼层号等文本。在该提案中,标志图像由智能手机拍摄,标志由 YOLOv8 检测,标志内的文字由 PaddleOCR 识别,并使用列文森距离与房间数据库中的每条记录进行比较。为了进行评估,我们在日本冈山大学的两栋建筑中应用了该建议。结果表明,YOLOv8 的 mAP@0.5 达到 0.995,mAP@0.5:0.95 达到 0.978,而 PaddleOCR 可以准确提取标志图像中的文本,平均 CER% 低于 10%。与之前的方法相比,YOLOv8 和 PaddleOCR 的组合减少了 6.71s 的执行时间。结果证实了该建议的有效性。
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引用次数: 0
Enhancing Resilience in Digital Twins: ASCON-Based Security Solutions for Industry 4.0 增强数字双胞胎的复原力:基于 ASCON 的工业 4.0 安全解决方案
Pub Date : 2024-07-19 DOI: 10.3390/network4030013
Mohammed El-Hajj, T. Gebremariam
Persistent security challenges in Industry 4.0 due to the limited resources of IoT devices necessitate innovative solutions. Addressing this, this study introduces the ASCON algorithm for lightweight authenticated encryption with associated data, enhancing confidentiality, integrity, and authenticity within IoT limitations. By integrating Digital Twins, the framework emphasizes the need for robust security in Industry 4.0, with ASCON ensuring secure data transmission and bolstering system resilience against cyber threats. Practical validation using the MQTT protocol confirms ASCON’s efficacy over AES-GCM, highlighting its potential for enhanced security in Industry 4.0. Future research should focus on optimizing ASCON for microprocessors and developing secure remote access tailored to resource-constrained devices, ensuring adaptability in the digital era.
由于物联网设备资源有限,工业 4.0 面临着持续的安全挑战,因此需要创新的解决方案。针对这一问题,本研究引入了 ASCON 算法,用于对相关数据进行轻量级验证加密,从而在物联网限制范围内提高保密性、完整性和真实性。通过集成数字孪生,该框架强调了工业 4.0 对强大安全性的需求,ASCON 可确保数据传输安全,并增强系统抵御网络威胁的能力。使用 MQTT 协议进行的实际验证证实了 ASCON 优于 AES-GCM 的功效,凸显了其在工业 4.0 中增强安全性的潜力。未来的研究应侧重于优化 ASCON,使其适用于微处理器,并开发适合资源受限设备的安全远程访问,确保其在数字时代的适应性。
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引用次数: 0
Delay and Disruption Tolerant Networking for Terrestrial and TCP/IP Applications: A Systematic Literature Review 地面和 TCP/IP 应用的延迟和中断容忍网络:系统文献综述
Pub Date : 2024-07-01 DOI: 10.3390/network4030012
Aris Castillo, C. Juiz, Belén Bermejo
Delay and Disruption Tolerant Networking (DTN) is a network architecture created basically to overcome non-continuing connectivity. There has been a great deal of research on this topic, from space communication to terrestrial applications. Since there are still many places on earth where there is no means of communication, the focus of this work is on the latest. A systematic literature review (SLR) was performed to know the main issues and advances related to the implementation of DTN for terrestrial and TCP/IP applications, especially in places where telecommunication infrastructure is lacking. The result is a classification of papers based on key aspects, such as architecture, performance, routing, and applications. A matrix of all the papers about these aspects is included to help researchers find the missing piece and concrete terrestrial solutions. The matrix uses three colors, green, yellow, and red according to the focus, either high, medium, or low, so that it is easy to identify specific papers.
延迟和中断容忍网络(DTN)是一种网络架构,主要用于克服非连续连接问题。从太空通信到地面应用,有关这一主题的研究非常多。由于地球上仍有许多地方没有通信手段,这项工作的重点是最新的研究。为了了解与在地面和 TCP/IP 应用中实施 DTN 相关的主要问题和进展,特别是在缺乏电信基础设施的地方,我们进行了系统的文献综述(SLR)。结果是根据架构、性能、路由和应用等关键方面对论文进行了分类。其中还包括一个关于这些方面的所有论文的矩阵,以帮助研究人员找到缺失的部分和具体的地面解决方案。该矩阵根据重点(高、中、低)使用了绿、黄、红三种颜色,以便于识别特定的论文。
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引用次数: 0
A Hybrid Anti-Collision Protocol Based on Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) for Radio Frequency Identification (RFID) Readers 基于频分多址 (FDMA) 和时分多址 (TDMA) 的射频识别 (RFID) 阅读器混合防冲突协议
Pub Date : 2024-06-13 DOI: 10.3390/network4020011
Mourad Ouadou, Rachid Mafamane, K. Minaoui
Radio Frequency Identification (RFID) technology plays a crucial role in various Internet of Things (IoT) applications, necessitating the integration of RFID systems into dense networks. However, the presence of numerous readers leads to collisions, degrading communication between readers and tags and compromising system performance. To tackle this challenge, researchers have proposed Medium Access Control (MAC) layer protocols employing different channel access methods. In this paper, we present a novel solution, the Distributed Time Slot Anti-Collision protocol (DTS-AC), which employs a new TDMA notification system to address Reader-to-Reader Interference (RRI), while incorporating FDMA-based frequency resource management to resolve Reader-to-Tag Interference (RTI) collision issues. Simulation results demonstrate that DTS-AC significantly improves performance in dense RFID networks by enhancing read rates, with scalability benefits based on the number of readers, channels, and Time Slots (TSs). Moreover, the cost-effectiveness of DTS-AC facilitates efficient deployment in RFID networks, emphasizing considerations of time delay and data sensitivity.
射频识别(RFID)技术在各种物联网(IoT)应用中发挥着至关重要的作用,因此有必要将 RFID 系统集成到密集的网络中。然而,大量读取器的存在会导致碰撞,降低读取器和标签之间的通信性能,影响系统性能。为应对这一挑战,研究人员提出了采用不同信道接入方法的介质访问控制(MAC)层协议。在本文中,我们提出了一种新颖的解决方案--分布式时隙防碰撞协议(DTS-AC),它采用新的 TDMA 通知系统来解决读者对读者干扰(RRI)问题,同时结合基于 FDMA 的频率资源管理来解决读者对标签干扰(RTI)碰撞问题。仿真结果表明,DTS-AC 通过提高读取率,显著改善了密集 RFID 网络的性能,并根据阅读器、信道和时隙(TS)的数量实现了可扩展性。此外,DTS-AC 的成本效益有助于在 RFID 网络中高效部署,同时强调了对时间延迟和数据敏感性的考虑。
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引用次数: 0
Localization of a BLE Device Based on Single-Device RSSI and DOA Measurements 基于单设备 RSSI 和 DOA 测量的 BLE 设备定位
Pub Date : 2024-05-21 DOI: 10.3390/network4020010
Harsha Kandula, Veena Chidurala, Yuan Cao, Xinrong Li
Indoor location services often use Bluetooth low energy (BLE) devices for their low energy consumption and easy implementation. Applications like device monitoring, ranging, and asset tracking utilize the received signal strength (RSS) of the BLE signal to estimate the proximity of a device from the receiver. However, in multipath environments, RSS-based solutions may not provide an accurate estimation. In such environments, receivers with antenna arrays are used to calculate the difference in time of flight (ToF) and therefore calculate the direction of arrival (DoA) of the Bluetooth signal. Other techniques like triangulation have also been used, such as having multiple transmitters or receivers as a network of sensors. To find a lost item, devices like Tile© use an onboard beeper to notify users of their presence. In this paper, we present a system that uses a single-measurement device and describe the method of measurement to estimate the location of a BLE device using RSS. A BLE device is configured as an Eddystone beacon for periodic transmission of advertising packets with RSS information. We developed a smartphone application to read RSS information from the beacon, designed an algorithm to estimate the DoA, and used the phone’s internal sensors to evaluate the DoA with respect to true north. The proposed measurement method allows for asset tracking by iterative measurements that provide the direction of the beacon and take the user closer at every step. The receiver application is easily deployable on a smartphone, and the algorithm provides direction of the beacon within a 30° range, as suggested by the provided results.
室内定位服务通常使用蓝牙低能耗(BLE)设备,因为其能耗低且易于实施。设备监控、测距和资产跟踪等应用利用 BLE 信号的接收信号强度(RSS)来估计设备与接收器的距离。然而,在多径环境中,基于 RSS 的解决方案可能无法提供准确的估计。在这种环境下,带有天线阵列的接收器可用于计算飞行时间(ToF)差,从而计算蓝牙信号的到达方向(DoA)。此外,还使用了三角测量等其他技术,例如将多个发射器或接收器组成传感器网络。为了寻找丢失的物品,Tile© 等设备使用板载蜂鸣器通知用户它们的存在。在本文中,我们介绍了一个使用单个测量设备的系统,并描述了使用 RSS 估算 BLE 设备位置的测量方法。BLE 设备被配置为 Eddystone 信标,用于定期发送包含 RSS 信息的广告数据包。我们开发了一个智能手机应用程序来读取信标的 RSS 信息,设计了一种估算 DoA 的算法,并使用手机的内部传感器来评估 DoA 与真实方位的关系。所提出的测量方法可通过迭代测量进行资产跟踪,提供信标的方向,让用户每一步都更接近信标。接收器应用程序可轻松部署在智能手机上,而且正如所提供的结果所示,该算法可在 30° 范围内提供信标的方向。
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引用次数: 0
Multi-Connectivity for Multicast Video Streaming in Cellular Networks 蜂窝网络多播视频流的多连接性
Pub Date : 2024-05-06 DOI: 10.3390/network4020009
Sadaf ul Zuhra, P. Chaporkar, A. Karandikar, H. V. Poor
The escalating demand for high-quality video streaming poses a major challenge for communication networks today. Catering to these bandwidth-hungry video streaming services places a huge burden on the limited spectral resources of communication networks, limiting the resources available for other services as well. Large volumes of video traffic can lead to severe network congestion, particularly during live streaming events, which require sending the same content to a large number of users simultaneously. For such applications, multicast transmission can effectively combat network congestion while meeting the demands of all the users by serving groups of users requesting the same content over shared spectral resources. Streaming services can further benefit from multi-connectivity, which allows users to receive content from multiple base stations simultaneously. Integrating multi-connectivity within multicast streaming can improve the system resource utilization while also providing seamless connectivity to multicast users. Toward this end, this work studied the impact of using multi-connectivity (MC) alongside wireless multicast for meeting the resource requirements of video streaming. Our findings show that MC substantially enhances the performance of multicast streaming, particularly benefiting cell-edge users who often experience poor channel conditions. We especially considered the number of users that can be simultaneously served by multi-connected multicast systems. It was observed that about 60% of the users that are left unserved under single-connectivity multicast are successfully served using the same resources by employing multi-connectivity in multicast transmissions. We prove that the optimal resource allocation problem for MC multicast is NP-hard. As a solution, we present a greedy approximation algorithm with an approximation factor of (1−1/e). Furthermore, we establish that no other polynomial-time algorithm can offer a superior approximation. To generate realistic video traffic patterns in our simulations, we made use of traces from actual videos. Our results clearly demonstrate that multi-connectivity leads to significant enhancements in the performance of multicast streaming.
对高质量视频流不断升级的需求给当今的通信网络带来了重大挑战。满足这些对带宽要求极高的视频流服务对通信网络有限的频谱资源造成了巨大负担,同时也限制了其他服务的可用资源。大量的视频流量会导致严重的网络拥塞,尤其是在需要同时向大量用户发送相同内容的直播流媒体活动期间。对于此类应用,组播传输可通过共享频谱资源为请求相同内容的用户组提供服务,从而有效解决网络拥塞问题,同时满足所有用户的需求。流媒体服务还可进一步受益于多连接功能,它允许用户同时接收来自多个基站的内容。在组播流媒体中集成多连接功能可以提高系统资源利用率,同时还能为组播用户提供无缝连接。为此,这项工作研究了在使用无线组播的同时使用多连接(MC)对满足视频流资源要求的影响。我们的研究结果表明,MC 大大提高了组播流媒体的性能,特别是使经常遇到恶劣信道条件的小区边缘用户受益匪浅。我们特别考虑了多连接组播系统可同时服务的用户数量。我们观察到,在单连接组播条件下,约有 60% 的用户得不到服务,而在组播传输中采用多连接条件后,这些用户可以使用相同的资源得到服务。我们证明了 MC 组播的最优资源分配问题是 NP 难题。作为解决方案,我们提出了一种近似系数为 (1-1/e) 的贪婪近似算法。此外,我们还证明没有其他多项式时间算法能提供更好的近似值。为了在仿真中生成真实的视频流量模式,我们使用了实际视频的轨迹。我们的结果清楚地表明,多连接性显著提高了组播流媒体的性能。
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引用次数: 0
Multi-level brain tumor classification using hybrid coot flamingo search optimization Algorithm Enabled deep learning with MRI images. 使用混合火烈鸟搜索优化算法对磁共振成像图像进行深度学习的多层次脑肿瘤分类。
Pub Date : 2024-04-26 DOI: 10.1080/0954898X.2024.2343342
Jayasri Kotti, Manikandan Moovendran, Mekala Kandasamy
An innovative multi-level BT classification approach based on deep learning has been proposed in this article. Here, classification is accomplished using the SpinalNet, whose structure is optimized by the Hybrid Coot Flamingo Search Optimization Algorithm (CootFSOA). Further, a novel segmentation approach using CootFSOA-LinkNet is devised for isolating the tumour area from the brain image. Here, the input MRI images are fed into the Adaptive Kalman Filter (AKF) to denoise the image. In the segmentation process, LinkNet is used to separate the tumour region from the MRI image. CootFSOA is used to achieve structural optimization of LinkNet. The segmented image is then used to create several features, and the resulting feature vector is fed into SpinalNet to detect BT. CootFSOA is used in this instance as well to adjust the SpinalNet's hyperparameters and achieve high detection accuracy. If a tumour is detected, second-level classification is carried out by employing the CootFSOA-SpinalNet to classify the input image into several types, such as gliomas, pituitary tumours, and meningiomas. Moreover, the efficacy of the CootFSOA-SpinalNet has been examined considering accuracy, True Positive Rate (TPR), and True Negative Rate (TNR) and has recorded superior values of 0.926, 0.931, and 0.925, respectively.
本文提出了一种基于深度学习的创新型多层次 BT 分类方法。在这里,分类是通过脊髓网络完成的,而脊髓网络的结构是通过混合库特火烈鸟搜索优化算法(CootFSOA)优化的。此外,还设计了一种使用 CootFSOA-LinkNet 的新型分割方法,用于从大脑图像中分离肿瘤区域。在这里,输入的核磁共振图像被送入自适应卡尔曼滤波器(AKF)对图像进行去噪处理。在分割过程中,LinkNet 用于从 MRI 图像中分离肿瘤区域。CootFSOA 用于实现 LinkNet 的结构优化。然后使用分割后的图像创建多个特征,并将生成的特征向量输入 SpinalNet 以检测 BT。在这种情况下,CootFSOA 也用于调整 SpinalNet 的超参数,以达到较高的检测精度。如果检测到肿瘤,则采用 CootFSOA-SpinalNet 对输入图像进行二级分类,将其分为胶质瘤、垂体瘤和脑膜瘤等几种类型。此外,还对 CootFSOA-SpinalNet 的准确率、真阳性率(TPR)和真阴性率(TNR)进行了检验,结果分别为 0.926、0.931 和 0.925。
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引用次数: 0
Optimized deep learning network for plant leaf disease segmentation and multi-classification using leaf images. 利用叶片图像进行植物叶片病害分割和多分类的优化深度学习网络。
Pub Date : 2024-04-25 DOI: 10.1080/0954898X.2024.2337801
Malathi Chilakalapudi, Sheela Jayachandran
Automatic detection of plant diseases is very imperative for monitoring the plants because they are one of the major concerns in the agricultural sector. Continuous monitoring can combat diseases of plants, which contribute to production loss. In the global production of agricultural goods, the disease of plants plays a significant role and harms yield, resulting in losses for the economy, society, and environment. It seems like a difficult and time-consuming task to manually identify diseased symptoms on leaves. The majority of disease symptoms are reflected in plant leaves, but experts in laboratories spend a lot of money and time diagnosing them. The majority of the features, which affect crop superiority and amount are plant or crop diseases. Therefore, classification, segmentation, and recognition of contaminated symptoms at the starting phase of infection is indispensable. Precision agriculture employs a deep learning model to jointly address these issues. In this research, an efficient disease of plant leaf segmentation and plant leaf disease recognition model is introduced using an optimized deep learning technique. As a result, maximum testing accuracy of 94.69%, sensitivity of 95.58%, and specificity of 92.90% were attained by the optimized deep learning method.
植物病害是农业领域的主要问题之一,因此自动检测植物病害对于监测植物非常必要。持续监测可以防治导致产量损失的植物病害。在全球农产品生产中,植物病害起着重要作用,它危害产量,给经济、社会和环境造成损失。人工识别叶片上的病害症状似乎是一项艰巨而耗时的任务。大多数病害症状都反映在植物叶片上,但实验室的专家们却要花费大量的金钱和时间来诊断。影响作物优劣和产量的大部分特征是植物或作物病害。因此,在感染的起始阶段对污染症状进行分类、分割和识别是必不可少的。精准农业采用深度学习模型来共同解决这些问题。本研究利用优化的深度学习技术,引入了一种高效的植物叶片分割和植物叶片病害识别模型。结果,优化后的深度学习方法达到了最高的检测准确率 94.69%、灵敏度 95.58%、特异性 92.90%。
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引用次数: 0
The neural network algorithm-based quality assessment method for university English translation. 基于神经网络算法的大学英语翻译质量评估方法。
Pub Date : 2024-04-24 DOI: 10.1080/0954898X.2024.2338446
Min Gong
These results highlight the transformative potential of neural network algorithms in providing consistency and transparency while reducing the inherent subjectivity in human evaluations, revolutionizing translation quality assessment in academia. The findings have significant implications for academia, as reliable translation quality evaluations are crucial for fostering cross-cultural knowledge exchange. However, challenges such as domain-specific adaptation require further investigation to improve and maximize the effectiveness of this novel approach, ultimately enhancing the accessibility of academic content and promoting global academic discourse. The proposed method involves using neural network algorithms for assessing college-level English translation quality, starting with data collection and preparation, developing a neural network model, and evaluating its performance using human assessment as a benchmark. The study employed both human evaluators and a neural network model to assess the quality of translated academic papers, revealing a strong correlation (0.84) between human and model assessments. These findings suggest the model's potential to enhance translation quality in academic settings, though additional research is needed to address certain limitations. The results show that the Neural Network-Based Model achieved higher scores in accuracy, precision, F-measure, and recall compared to Traditional Manual Evaluation and Partial Automated Model, indicating its superior performance in evaluating translation quality.
这些结果凸显了神经网络算法在提供一致性和透明度方面的变革潜力,同时减少了人工评估中固有的主观性,彻底改变了学术界的翻译质量评估。这些发现对学术界具有重要意义,因为可靠的翻译质量评估对促进跨文化知识交流至关重要。然而,需要进一步研究特定领域的适应性等挑战,以改进并最大限度地提高这种新方法的有效性,最终提高学术内容的可访问性并促进全球学术交流。所提出的方法包括使用神经网络算法评估大学英语翻译质量,从数据收集和准备开始,开发神经网络模型,并以人工评估为基准评估其性能。研究同时使用人类评估者和神经网络模型来评估学术论文的翻译质量,结果显示人类评估和模型评估之间存在很强的相关性(0.84)。这些发现表明,该模型具有在学术环境中提高翻译质量的潜力,但还需要进行更多的研究来解决某些局限性。结果表明,与传统人工评估和部分自动化模型相比,基于神经网络的模型在准确度、精确度、F-measure 和召回率方面都获得了更高的分数,这表明它在评估翻译质量方面表现出色。
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引用次数: 0
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