deep neural networks, also referred to as DNNs, have experienced great progress in processing a wide range of data types, including pictures, time series, speech, audio, and video, thanks to their amazing ability to i...
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The technological advancements in artificial intelligence have made it a lot easier to create forged videos that are difficult to distinguish from reality. Fake videos also called deep fakes are created with greater a...
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As increasing sensor-based structural health monitoring (SHM) systems are implemented on civil infrastructures, sensor data reliability plays a crucial role in the assessment of operational performance of bridges. Sen...
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As increasing sensor-based structural health monitoring (SHM) systems are implemented on civil infrastructures, sensor data reliability plays a crucial role in the assessment of operational performance of bridges. Sensors are heavily exposed to harsh environmental conditions during their operations and inevitably lead to possible unstable performance or failure. Thus, to accurately identify faulty sensors is a prerequisite to processing and analyzing the collected data for assessment purpose. Recently, researchers adopted the convolutional neural network (CNN) approach to identify faulty sensors, focusing on image features. Such approach may overlook some important detailed signal features and the time series approach may still be needed. However, algorithms based on time series tend to be time consuming because of the lengthy and high dimensional dataset. This may be effectively resolved using an automatic feature selection technique, namely Tsfresh, as proposed in this paper to select highly relevant signal features based on statistical tests of significance. A deeplearning technique based on fully convolutional network (FCN) can then be efficiently employed for anomaly classification. The algorithm is validated using a dataset collected from a real cable-stayed bridge and results show that the proposed method significantly reduces the training time for the neural network, albeit with high classification accuracy.
Low Earth Orbit (LEO) satellite communications for Internet-of-Things (IoT) services provide a cost-effective means to improve existing networks. However, challenges related to data, such as storage capacity, bandwidt...
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Background: Nanosecond pulsed electric fields (nsPEF)-based electroporation is a new therapy modality potentially synergized with radiation therapy to improve treatment outcomes. To verify its treatment accuracy intra...
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Background: Nanosecond pulsed electric fields (nsPEF)-based electroporation is a new therapy modality potentially synergized with radiation therapy to improve treatment outcomes. To verify its treatment accuracy intraoperatively, electroacoustic tomography (EAT) has been developed to monitor in-vivo electric energy deposition by detecting ultrasound signals generated by nsPEFs in real-time. However, utility of EAT is limited by image distortions due to the limited-angle view of ultrasound transducers. Methods: This study proposed a supervised learning-based workflow to address the ill-conditioning in EAT reconstruction. Electroacoustic signals were detected by a linear array and initially reconstructed into EAT images, which were then fed into a deeplearning model for distortion correction. In this study, 56 distinct electroacoustic data sets from nsPEFs of different intensities and geometries were collected experimentally, avoiding simulation-to-real-world variations. Forty-six data were used for model training and 10 for testing. The model was trained using supervised learning, enabled by a custom rotating platform to acquire paired full-view and single-view signals for the same electric field. Results: The proposed method considerably improved the image quality of linear array-based EAT, generating pressure maps with accurate and clear structures. Quantitatively, the enhanced single-view images achieved a low-intensity error (RMSE: 0.018), high signal-to-noise ratio (PSNR: 35.15), and high structural similarity (SSIM: 0.942) compared to the reference full-view images. Conclusions: This study represented a pioneering stride in achieving high-quality EAT using a single linear array in an experimental environment, which improves EAT's utility in real-time monitoring for nsPEF-based electroporation therapy.
This research is driven by the growing need for efficient, scalable object detection in smart home applications with real-time performance and resource constraints. In this study, we utilize the YOLOv8 deeplearning m...
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With the enhancement of computing capabilities at edge computing nodes, edge computing based on cloud computing has seen widespread development and application. In the field of epilepsy prevention and treatment, appli...
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ISBN:
(纸本)9783031770029
With the enhancement of computing capabilities at edge computing nodes, edge computing based on cloud computing has seen widespread development and application. In the field of epilepsy prevention and treatment, applications related to edge computing have become very popular. Edge computing is a distributed computing model that places data processing, storage, and application functions at the edge location close to the data source, enabling real-time data processing, reducing data transmission latency, and improving system response speed. The temporal complexity of epilepsy electroencephalogram (EEG) signals has been described and characterized at different time periods. Addressing the multi-channel, high-dimensional, and heterogeneous nature of EEG signals and considering their uncertainty and dynamic characteristics, by analyzing and mining foundational data and combining deeplearning theories and methods, epilepsy patients’ EEG signals are analyzed and differentiated across multiple time periods, delving into the characteristics of epilepsy EEG signals at different times. In traditional EEG data collection and management systems, cloud storage faces challenges when dealing with large amounts of terminal data, which can reduce real-time data processing performance. To address these issues, this paper proposes an EEG wireless data collection and analysis system based on edge computing. By pushing data processing and storage capabilities to the network edge, data can be processed and analyzed in real-time at the source, thereby reducing data transmission delays and network congestion. Building upon this, the focus is on automatic identification, prediction, and decision-making related to epilepsy, exploring the dynamic patterns of epilepsy automatic identification processes, breaking through traditional epilepsy automatic identification, prediction, and decision-making models, proposing a new method for epilepsy automatic identification, prediction, and decision-ma
With the proliferation of cloud services and high-capacity hard drives, the volume of stored document data is rapidly increasing. Consequently, large-scale document retrieval tasks have been attracting significant att...
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With the proliferation of cloud services and high-capacity hard drives, the volume of stored document data is rapidly increasing. Consequently, large-scale document retrieval tasks have been attracting significant attention. Recently, embedding-based methods including language models and graph neural networks (GNNs) have been developed to effectively handle synonyms in documents. However, a major limitation of these approaches is scalability. When taking N-grams into account, it is important to remember that many query keywords are unsupported by language models and that existing GNN-based methods can cause GPU memory shortages. To address this issue, we propose Graph neural networks for Document Retrievals with Mean Aggregation (GDRMA). First, we carefully select a subset of words as important words and derive document embeddings using our novel GNNs on the important words-documents graph to save GPU memory usage. Then, we quickly learn an embedding of the target query keyword using "mean aggregation" and generate a ranking of related documents on CPUs. The main advantage is that our provided GNN connects the two steps mentioned above smoothly, and the generated ranking incorporates synonyms based on a co-occurrence relationship. We conducted exhaustive experiments on real datasets and confirmed that GDRMA is superior to comparable methods.
Due to the lack of fitness exercise foundation, leisure time, the limitations of the sports ground, and other factors. A fitness exercise guidance system is designed to help people exercise effectively. In this paper,...
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The proliferation of Internet of Things (IoT) applications and real-time services brings severe performance pressure on IoT systems with cloud computing, so edge computing is increasingly being adopted in IoT systems ...
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The proliferation of Internet of Things (IoT) applications and real-time services brings severe performance pressure on IoT systems with cloud computing, so edge computing is increasingly being adopted in IoT systems to assist cloud computing in providing services. Systems with cloud-edge computing deploy parts of services on edge servers located closer to IoT devices, thus enabling real-time data processing and analysis and improving the Quality of Experience (QoE) of users. However, inevitable extreme events (e.g., meteorological disasters) and the aging of the physical infrastructure cause varying degrees of performance impairment to edge servers, which adversely affects the service provisioning capability of IoT systems. Therefore, there is a serious challenge to cope with the lack of service provisioning capability owing to the impaired edge server performance in extreme environments. In this article, an unmanned aerial vehicle (UAV) -assisted service provisioning framework for the IoT systems in cloud-edge computing is introduced, and a UAV-enhanced service caching scheme based on a potential game (G-USC) is proposed for this framework. Besides, to provide a prerequisite for service caching, a UAV position update scheme based on a deep $Q$ -network is designed. The experimental analysis proves that G-USC effectively solves the problem of insufficient service provisioning capability of edge servers in extreme environments.
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