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40th IEEE International Conference on Data engineering, ICDE 2024

作者： Zhang, Bowen Zheng, Shengan Nie, Liangxu Qi, Zhenlin Huang, Linpeng Mei, Hong Shanghai Jiao Tong University Department of Computer Science and Engineering China AI Institute Shanghai Jiao Tong University MoE Key Lab of Artificial Intelligence China

ISBN: (纸本)9798350317152

Byte-addressable persistent memory (PM) has been widely studied in the past few years. Recently, the emerging eADR technology further incorporates CPU cache into the persistence domain. The persistent CPU cache is promising to optimize the write performance of PM-based storage systems and facilitate the design of concurrent crash-consistent data structures. In this paper, we propose Spash, a highly scalable persistent hash index for PM systems with persistent CPU cache. Spash fully exploits the benefits of persistent CPU cache to implement a durable linearizable index with low PM access overhead and high concurrency. Spash employs a fine-grained extendible hash architecture and a metadata-free segment design to minimize the number of PM accesses. Moreover, Spash adopts adaptive in-place updates and compacted-flush insertions, which dramatically conserve scarce PM write bandwidth by absorbing a large amount of PM write in the persistent CPU cache. Furthermore, Spash proposes a two-phase concurrency protocol and a collaborative staged doubling mechanism, which leverage the persistent CPU cache and hardware transactional memory to achieve lock-free concurrency and durable linearizability. Spash outperforms the other state-of-the-art persistent hash indexes in YCSB workloads by up to 19.6×. © 2024 IEEE.

关键词： Concurrency control

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Impact of Network Factors on QoE-sensitive Virtual Reality Environments: An Experimental Analysis Perspective using VR-based Mindfulness 6

Impact of Network Factors on QoE-sensitive Virtual Reality E...

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6th IEEE International Conference on Artificial Intelligence and eXtended and Virtual Reality, AIxVR 2024

作者： Jaime Burbano, V. Pillco, Jorge Genovez, Sebastian Ortega, Patricia Universidad Del Azuay Neuroscience Lab Ecuador Universidad Del Azuay Electronics Engineering Research Center Ecuador Universidad Del Azuay Department of Computer Science Ecuador

ISBN: (纸本)9798350372021

Virtual reality (VR) environments have gained significant attention in therapeutic use cases as a tool for generating controlled and immersive experiences. However, to ensure the effectiveness of the VR application, maintaining a high quality of experience (QoE) is critical. In QoE-sensitive VR environments, even a minor degradation or impairment can significantly impact user presence, engagement, and attention. This study presents an experimental analysis of the influence of network factors on QoE. We conduct the research using a VR-based mindfulness scenario over an 802.11ax network as an example of a QoE-sensitive VR environment, that has been applied to a sample population of 60 individuals. Our results demonstrate that QoE degradation in 2.4 GHz networks is primarily attributed to traffic, while in 5 GHz networks, it is primarily influenced by the signal strength captured by the VR device. These findings, among others, provide valuable insights for guiding the design of VR systems and optimizing network configurations to deliver an enhanced QoE. © 2024 IEEE.

关键词： Virtual reality

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PExCon: Design and Development of Passive Exoskeleton for Construction 40

PExCon: Design and Development of Passive Exoskeleton for Co...

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40th International Symposium on Automation and Robotics in Construction, ISARC 2023

作者： Kansal, Sachin Zhang, Jiansong Computer Science Engineering Department Thapar Institute of Engineering Technology Patiala India Lab School of Construction Management Technology Purdue University Indiana United States

ISBN: (纸本)9780645832204

The concept of teleoperation is crucial in modern and future construction workplaces, as it can be used in remote or challenging/hazardous environments such as workspace in a desert, close to a nuclear reactor, or underwater, among others. The success of teleoperation hinges on its interface, where passive exoskeleton with ergonomics considerations has shown great promise. In the literature, however, the ergonomic design of the passive exoskeleton and the 3-D environment for precise visual feedback is lacking. To address that, the authors target to design and develop an ergonomic inclined and light-weighted passive exoskeleton to support construction teleoperation activities. © ISARC 2023. All rights reserved.

关键词： Remote control

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Adaptive Attribute-Based Honey Encryption: A Novel Solution for Cloud Data Security

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computers, Materials & Continua 2025年第2期82卷 2637-2664页

作者： Reshma Siyal Muhammad Asim Long Jun Mohammed Elaffendi Sundas Iftikhar Rana Alnashwan Samia Allaoua Chelloug School of Computer Science and Engineering Central South UniversityChangsha410083China EIAS LAB College of Computer and Information Sciencesand Center of Excellence in Quantum and Intelligent ComputingPrince Sultan UniversityRiyadh11586Saudi Arabia Gianforte School of Computing Montana State UniversityBozemanMT 59717USA Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11671Saudi Arabia

A basic procedure for transforming readable data into encoded forms is encryption, which ensures security when the right decryption keys are used. Hadoop is susceptible to possible cyber-attacks because it lacks built-in security measures, even though it can effectively handle and store enormous datasets using the Hadoop Distributed File System (HDFS). The increasing number of data breaches emphasizes how urgently creative encryption techniques are needed in cloud-based big data settings. This paper presents Adaptive Attribute-Based Honey Encryption (AABHE), a state-of-the-art technique that combines honey encryption with Ciphertext-Policy Attribute-Based Encryption (CP-ABE) to provide improved data security. Even if intercepted, AABHE makes sure that sensitive data cannot be accessed by unauthorized parties. With a focus on protecting huge files in HDFS, the suggested approach achieves 98% security robustness and 95% encryption efficiency, outperforming other encryption methods including Ciphertext-Policy Attribute-Based Encryption (CP-ABE), Key-Policy Attribute-Based Encryption (KB-ABE), and Advanced Encryption Standard combined with Attribute-Based Encryption (AES+ABE). By fixing Hadoop’s security flaws, AABHE fortifies its protections against data breaches and enhances Hadoop’s dependability as a platform for processing and storing massive amounts of data.

关键词： Cybersecurity data security cloud storage hadoop encryption and decryption privacy protection attribute-based honey encryption

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Emodiff: Intensity Controllable Emotional Text-to-Speech with Soft-label Guidance 48

Emodiff: Intensity Controllable Emotional Text-to-Speech wit...

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48th IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2023

作者： Guo, Yiwei Du, Chenpeng Chen, Xie Yu, Kai Shanghai Jiao Tong University MoE Key Lab of Artificial Intelligence Ai Institute X-LANCE Lab Department of Computer Science and Engineering Shanghai China

ISBN: (纸本)9781728163277

Although current neural text-to-speech (TTS) models are able to generate high-quality speech, intensity controllable emotional TTS is still a challenging task. Most existing methods need external optimizations for intensity calculation, leading to suboptimal results or degraded quality. In this paper, we propose EmoDiff, a diffusion-based TTS model where emotion intensity can be manipulated by a proposed soft-label guidance technique derived from classifier guidance. Specifically, instead of being guided with a one-hot vector for the specified emotion, EmoDiff is guided with a soft label where the value of the specified emotion and Neutral is set to α and 1 - α respectively. The α here represents the emotion intensity and can be chosen from 0 to 1. Our experiments show that EmoDiff can precisely control the emotion intensity while maintaining high voice quality. Moreover, diverse speech with specified emotion intensity can be generated by sampling in the reverse denoising process. © 2023 IEEE.

关键词： classifier guidance de-noising diffusion models emotion intensity control Emotional TTS

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Real-time road occupancy and traffic measurements using unmanned aerial vehicle and fundamental traffic flow diagrams

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Personal and Ubiquitous Computing 2023年第5期27卷 1669-1680页

作者： Ahmed, Afzal Outay, Fatima Farooq, Muhammad Umer Saeed, Sehrish Adnan, Muhammad Ismail, Muhammad Ali Qadir, Adnan Department of Urban & Infrastructure Engineering NED University of Engineering & Technology Karachi Pakistan Zayed University Dubai United Arab Emirates Department of Computer Science and Information Technology NED University of Engineering & Technology Karachi Pakistan Exascale Open Data Analytics Lab NED University of Engineering & Technology Karachi Pakistan Hasselt University Diepenbeek Belgium

The technologies and sensors developed for standard traffic streams often fail to accurately measure the heterogeneous traffic with no lane discipline. This research proposes an efficient framework to measure traffic flow parameters in real-time using an unmanned aerial vehicle (UAV). The proposed framework in this research estimates road area occupancy from the images extracted from the video recorded using a UAV by applying the image segmentation technique. The road area occupancy is converted into traffic density using an occupancy-density model developed for the local heterogeneous traffic. A speed-density fundamental diagram is developed, which estimates the average speed corresponding to the measured traffic density. The fundamental relation between flow rate, average speed, and density is applied to compute traffic flow rate using the estimated average speed and density. The proposed framework is computationally less demanding in comparison with other computer vision and artificial intelligence–based techniques. The proposed framework accurately measured road area occupancy with an average accuracy of 97.6%. Traffic density was measured with an average accuracy of 88.8%. Similarly, the average speed and flow rate were measured with an average accuracy of 85.4% and 84.2%, respectively. © 2023, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.

关键词： Image segmentation

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Robust Audio-Visual ASR with Unified Cross-Modal Attention 48

Robust Audio-Visual ASR with Unified Cross-Modal Attention

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48th IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2023

作者： Li, Jiahong Li, Chenda Wu, Yifei Qian, Yanmin Shanghai Jiao Tong University MoE Key Lab of Artificial Intelligence AI Institute X-LANCE Lab Department of Computer Science and Engineering Shanghai China

ISBN: (纸本)9781728163277

Audio-visual speech recognition (AVSR) takes advantage of noise-invariant visual information to improve the robustness of automatic speech recognition (ASR) systems. While previous works mainly focused on the clean condition, we believe the visual modality is more effective in noisy environments. The challenges arise from the difficulty of adaptive fusion of audio-visual information and the possible interferences inside the training data. In this paper, we present a new audio-visual speech recognition model with a unified cross-modal attention mechanism. In particular, the auxiliary visual evidence is combined with the acoustic feature along the temporal dimension in the unified space before the deep encoding network. This method provides a flexible cross-modal context and requires no forced alignment such that the model can learn to leverage the audio-visual information in relevant frames. In experiments, the proposed model is demonstrated to be robust to the potential absence of the visual modality or misalignment in audio-visual frames. On the large-scale audio-visual dataset LRS3, our new model further reduces the state-of-The-Art WER for clean utterances and significantly improves the performance under noisy conditions. © 2023 IEEE.

关键词： Speech recognition

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Partial Convolution U-Net for Inpainting Distorted Images 15

Partial Convolution U-Net for Inpainting Distorted Images

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15th International Conference on Computing Communication and Networking Technologies, ICCCNT 2024

作者： Rashmi Adyapady, R. Annappa, B. Sagar, Prem Nmam Institute of Technology Department of Artificial Intelligence and Machine Learning Karnataka Nitte India National Institute of Technology Karnataka Discover Lab Department of Computer Science and Engineering Karnataka Mangalore India

ISBN: (纸本)9798350370249

Image inpainting is a domain in which researchers have shown considerable interest, and when it comes to deep learning techniques, realistic problems become interesting and challenging. In image inpainting, a corrupted facial image with missing holes or significant holes can be restored and compared to the original image to see if it is real or fake. In addition to fixing the texture of the image and getting the image's high-level abstract properties, it may also recover semantic images such as human faces. In the field of image-inpainting models, the Attention model with features learned through semantic approaches and progressive networks has become particularly popular. The proposed model introduces (i) Attention blocks in each decoder layer of U-Net architecture and (ii) a hybrid loss function leveraging both Mean Square Error (MSE) and Mean Absolute Error (MAE). The proposed Attention-based U-Net showed remarkable performance with SSIM and PSNR by 0.1067 and 13.63, respectively, compared to the previous approaches. © 2024 IEEE.

关键词： Distorted Images Image Inpainting Partial Convolution U-Net

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Data collection of wireless sensor network based on trajectory optimization of laser-charged UAV

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High-Confidence Computing 2024年第2期4卷 116-128页

作者： Chuanwen Luo Jian Zhang Jin Qian Yi Hong Zhibo Chen Yunan Hou Xiujuan Zhang Yuqing Zhu School of Information Science and Technology Beijing Forestry UniversityBeijing 100083China Engineering Research Center for Forestry-Oriented Intelligent Information Processing of National Forestry and Grassland Administration Beijing 100083China College of Information Engineering Taizhou UniversityTaizhou 225300China School of Computer Science Qufu Normal UniversityRizhao 276826China Research Center of Applied Mathematics and Machine Intelligence Zhejiang LabHangzhou 311121China Department of Computer Science California State UniversityCA 90032USA

Unmanned Aerial Vehicle(UAV)can be used as wireless aerial mobile base station for collecting data from sensors in UAV-based Wireless Sensor Networks(WSNs),which is crucial for providing seamless services and improving the performance in the next generation wireless ***,since the UAV are powered by batteries with limited energy capacity,the UAV cannot complete data collection tasks of all sensors without energy replenishment when a large number of sensors are deployed over large monitoring *** overcome this problem,we study the Real-time Data Collection with Lasercharging UAV(RDCL)problem,where the UAV is utilized to collect data from a specified WSN and is recharged using Laser Beam Directors(LBDs).This problem aims to collect all sensory data from the WSN and transport it to the base station by optimizing the flight trajectory of UAV such that realtime data performance is ensured It has been proven that the RDCL problem is *** address this,we initially focus on studying two sub-problems,the Trajectory Optimization of UAV for Data Collection(TODC)problem and the Charging Trajectory Optimization of UAV(CTO)problem,whose objectives are to find the optimal flight plans of UAV in the data collection areas and charging areas,*** we propose an approximation algorithm to solve each of them with the constant ***,we present an approximation algorithm that utilizes the solutions obtained from TODC and CTO problems to address the RDCL ***,the proposed algorithm is verified by extensive simulations.

关键词： Wireless sensor networks Laser-charged UAV Trajectory optimization Data collection

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ECAPA++: Fine-grained Deep Embedding Learning for TDNN Based Speaker Verification 24

ECAPA++: Fine-grained Deep Embedding Learning for TDNN Based...

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24th International Speech Communication Association, Interspeech 2023

作者： Liu, Bei Qian, Yanmin MoE Key Lab of Artificial Intelligence AI Institute X-LANCE Lab Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai China

In this paper, we aim to bridge the performance gap between TDNN and 2D CNN based speaker verification systems. Specifically, three types of architectural enhancements to ECAPA-TDNN are proposed: 1) follow depth-first design to significantly increase network depth while maintaining its complexity. 2) introduce recursive convolution to better capture fine-grained speaker information. 3) propose pyramid-based multi-path feature enhancement module to yield more discriminative speaker representation. Experiments on Voxceleb show that our final model, named ECAPA++, achieves 25%, 23% and 24% relative improvements on Vox1-O, E and H respectively, while with 2.4x fewer parameters and 2.3x fewer FLOPs over the previous best TDNN-based system. Meanwhile, it is comparable to the state-of-the-art ResNet-based systems with higher computational efficiency. In addition, further performance gains can be achieved by fusing ECAPA++ and ResNet-based systems. © 2023 International Speech Communication Association. All rights reserved.

关键词： Computational efficiency

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