In a Wireless Powered Sensor Network (WPSN) aided by Unmanned Aerial Vehicles (UAVs), UAVs wirelessly recharge nodes to support the network's operation. In WPSN, efficient broadcasting of IPv6 packets is crucial f...
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The main topic of this lecture will be related to the Information security and the role of the Cognitive science in Enhancing this security. The main topics will be: *** of Future Parameters in Advance Technologies **...
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The main topic of this lecture will be related to the Information security and the role of the Cognitive science in Enhancing this security. The main topics will be: *** of Future Parameters in Advance Technologies *** Features towards New Technologies *** and its main role in progress of the new science and technologies applications *** Cognitive Security *** Cryptography *** Important Parameters *** Scientific support
We address the challenges of the semi-supervised LiDAR segmentation (SSLS) problem, particularly in low-budget scenarios. The two main issues in low-budget SSLS are the poor-quality pseudo-labels for unlabeled data, a...
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ISBN:
(纸本)9798350377712;9798350377705
We address the challenges of the semi-supervised LiDAR segmentation (SSLS) problem, particularly in low-budget scenarios. The two main issues in low-budget SSLS are the poor-quality pseudo-labels for unlabeled data, and the performance drops due to the significant imbalance between ground-truth and pseudo-labels. This imbalance leads to a vicious training cycle. To overcome these challenges, we leverage the spatio-temporal prior by recognizing the substantial overlap between temporally adjacent LiDAR scans. We propose a proximity-based label estimation, which generates highly accurate pseudo-labels for unlabeled data by utilizing semantic consistency with adjacent labeled data. Additionally, we enhance this method by progressively expanding the pseudo-labels from the nearest unlabeled scans, which helps significantly reduce errors linked to dynamic classes. Additionally, we employ a dual-branch structure to mitigate performance degradation caused by data imbalance. Experimental results demonstrate remarkable performance in low-budget settings (i.e., <= 5%) and meaningful improvements in normal budget settings (i.e., 5 - 50%). Finally, our method has achieved new state-of-the-art results on SemanticKITTI and nuScenes in semi-supervised LiDAR segmentation. With only 5% labeled data, it offers competitive results against fully-supervised counterparts. Moreover, it surpasses the performance of the previous state-of-the-art at 100% labeled data (75.2%) using only 20% of labeled data (76.0%) on nuScenes. The code is available on https://***/halbielee/PLE.
Integrating wireless-powered Mobile Edge computing (MEC) with Unmanned Aerial Vehicles (UAVs) leverages computation offloading services for mobile devices, significantly enhancing the mobility and control of MEC netwo...
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Integrating wireless-powered Mobile Edge computing (MEC) with Unmanned Aerial Vehicles (UAVs) leverages computation offloading services for mobile devices, significantly enhancing the mobility and control of MEC networks. However, current research has not focused on customizing system designs for Terahertz (THz) communication networks. When dealing with THz communication, one must account for blockage vulnerability due to severe THz wave propagation attenuation and insufficient diffraction. The intelligent Reflecting Surface (IRS) can effectively address these limitations in the model, enhancing spectrum efficiency and coverage capabilities while reducing blockage vulnerability in THz networks. In this paper, we introduce an upgraded MEC system that integrates IRS and UAVs into THz communication networks, focusing on a binary offloading policy for studying the computation offloading problem. Our primary objective is to optimize the energy consumption of both UAVs and User Electronic Devices, alongside refining the phase shift of the IRS reflector. The problem is a Mixed Integer Non-Linear Programming problem known as NP-hard. To tackle this challenge, we propose a two-stage deep learning-based optimization framework named Iterative Order-Preserving Policy Optimization (IOPO). Unlike exhaustive search methods, IOPO continually updates offloading decisions through an order-preserving quantization method, thereby accelerating convergence and reducing computational complexity, especially when handling complex problems with extensive solution spaces. The numerical results demonstrate that the proposed algorithm significantly improves energy efficiency and achieves near-optimal performance compared to benchmark methods.
Soft sensors are used in various application domains to replace physical sensors. However, the soft sensor's predictions cannot be trusted as much as the physical sensor's measurements. Therefore, the evaluati...
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ISBN:
(纸本)9798331516000;9798331515997
Soft sensors are used in various application domains to replace physical sensors. However, the soft sensor's predictions cannot be trusted as much as the physical sensor's measurements. Therefore, the evaluation of the credibility of soft sensor predictions is crucial to prepare for the issues caused by inaccurate soft sensor measurements. In this paper, we propose a novel soft sensor architecture that can provide not only predictions but also their predictive credibility via uncertainty quantification. The proposed architecture offers the confidence interval of each prediction that can be used to evaluate the credibility of the soft sensor's predictions. In our experiments, we build scenarios with different predictive uncertainties and demonstrate the proposed architecture provides credible uncertainty quantification. By using the proposed architecture, we can assess how trustworthy the soft sensor's predictions are, and thus, effectively manage and respond to varying levels of prediction accuracy.
The necessity of precise wind speed forecasts is crucial for integrating wind turbines into microgrids. This study introduces a hybrid forecast approach that initially optimizes the key factors of variational modal de...
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With the rapid information and communications technology growth and continuous invention, the concept of parallel computing has become the core of computer science, and its capabilities are continually documented in p...
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In the field of finance, the analysis and prediction of stock data have always been a hot topic of research. Back Propagation (BP) neural networks have shown great potential in handling complex financial time series d...
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Tourism is one of the main sources of income in Australia. The number of tourists will affect airlines, hotels and other stakeholders. Predicting the arrival of tourists can make full preparations for welcoming touris...
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Several parallel and distributed data mining algorithms have been proposed in literature to perform large scale data analysis, overcoming the bottleneck of traditional methods on a single machine. However, although th...
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ISBN:
(纸本)9798350363074;9798350363081
Several parallel and distributed data mining algorithms have been proposed in literature to perform large scale data analysis, overcoming the bottleneck of traditional methods on a single machine. However, although the master-worker approach greatly simplifies the synchronization of all nodes since only the master is in charge to do that, it also presents several problematic issues for large-scale data analysis tasks (involving thousands or millions of nodes). This paper presents a hierarchical (or multi-level) master-worker framework for iterative parallel data analysis algorithms, to overcome the scalability issues affecting classic master-worker solutions. Specifically, the framework is composed of (more than one) merger and worker nodes organized in a k-tree structure, in which the workers are on the leaves and the mergers are on the root and the internal nodes in the tree.
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