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Advances of Pipeline Model Parallelism for Deep Learning Training:An Overview

Journal of computer science & technology 2024年第3期39卷 567-584页

作者：关磊李东升梁吉业王文剑葛可适卢锡城 College of Science National University of Defense TechnologyChangsha 410073China College of Computer National University of Defense TechnologyChangsha 410073China School of Computer and Information Technology Shanxi UniversityTaiyuan 030006China CCF IEEE

Deep learning has become the cornerstone of artificial intelligence,playing an increasingly important role in human production and ***,as the complexity of problem-solving increases,deep learning models become increasingly intricate,resulting in a proliferation of large language models with an astonishing number of *** model parallelism(PMP)has emerged as one of the mainstream approaches to addressing the significant challenge of training“big models”.This paper presents a comprehensive review of *** covers the basic concepts and main challenges of *** also comprehensively compares synchronous and asynchronous pipeline schedules for PMP approaches,and discusses the main techniques to achieve load balance for both intra-node and inter-node ***,the main techniques to optimize computation,storage,and communication are presented,with potential research directions being discussed.

关键词： deep learning pipeline schedule load balance multi-GPU system pipeline model parallelism(PMP)

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Continuous and generalized visual odometry based on FLANN_PSC-RANSAC_LSTM

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Journal of Intelligent and Fuzzy Systems 2024年第1-2期47卷 15-28页

作者： Li, Dengao Feng, Ran Wu, Fanming Zhao, Jinhua Zhao, Jumin College of Computer Science and Technology College of Data Science Taiyuan University of Technology Shanxi Taiyuan China College of Electronic Information and Optical Engineering Taiyuan University of Technology Shanxi Taiyuan China Key Laboratory of Big Data Fusion Analysis and Application of Shanxi Province Taiyuan University of Technology Shanxi Taiyuan China Intelligent Perception Engineering Technology Center of Shanxi Taiyuan China

In the field of simultaneous localization and mapping (SLAM), visual odometry (VO) always has great application prospects. In recent years, with the progress in the field of machine learning, methods based on neural networks are constantly being updated and applied. In this paper, we propose a continuous and generalized monocular visual odometry method based on features and neural networks. First, the feature information of adjacent image sequences is extracted by matching and troubleshooting algorithm (FLANN_PSC-RANSAC), then it and the corresponding six-degree-of-freedom information are simultaneously input into the long short-term memory artificial neural network (LSTM) for model construction, which not only ensures the reliability of the mode but also eliminates the influence of illumination on the data. In the real environment test, it has been effectively proved in terms of trajectory recovery accuracy and generalization ability to different environments and different illuminations. © 2024 - IOS Press. All rights reserved.

关键词： Long short-term memory

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V-MOF-derived V_(2)O_(5) nanoparticles-modified carbon fiber cloth-based dendrite-free anode for high-performance lithium metal batteries

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Chinese Journal of Chemical Engineering 2024年第7期71卷 13-23页

作者： Tao Wei Mengting Wang Yanyan Zhou Xingtong Guo Sijia Wang Ye Liu Cheng Sun Qian Wang School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

At present,commercial Li-ion batteries are hardly to satisfy the growing demand for high energy density,for this purpose,lithium metal batteries have attracted worldwide attention in recent ***,its practical applications are hindered by the formation of Li dendrites and volume effect during Li plating/stripping process,which leads to a lot of safety ***,we first employed MOF-derived V_(2)O_(5) nanoparticles to decorate the carbon fiber cloth(CFC)backbone to acquire a lithiophilic 3D porous conductive framework(CFC@V_(2)O_(5)).Subsequently,the CFC@V_(2)O_(5) skeleton was permeated with molten Li to prepare CFC@V_(2)O_(5)@Li composite *** CFC@V_(2)O_(5)@Li composite anode can be stably cycled for more than 1650 h at high current density(5 mA·cm^(-2))and areal capacity(5 mA·h·cm^(–2)).The prepared full cell can initially maintain a high capacity of about 143 mA·h·g^(-1) even at a high current density of 5 C,and can still maintain 114 mA·h·g^(-1) after 1000 cycles.

关键词： Three-dimensional(3D)conductive frameworks Lithium metal anode Lithiophilic material MOF-derived materials Prestoring lithium

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Intra-Patient and Inter-Patient Multi-Classification of Severe Cardiovascular Diseases Based on CResFormer

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Tsinghua science and technology 2023年第2期28卷 386-404页

作者： Dengao Li Changcheng Shi Jumin Zhao Yi Liu Chunxia Li College of Data Science Taiyuan University of TechnologyJinzhong 030600China College of Information and Computer Taiyuan University of TechnologyJinzhong 030600China Shanxi Bethune Hospital Taiyuan 030032China

Severe cardiovascular diseases can rapidly lead to *** present,most studies in the deep learning field using electrocardiogram(ECG)are performed on intra-patient experiments for the classification of coronary artery disease(CAD),myocardial infarction,and congestive heart failure(CHF).By contrast,actual conditions are inter-patient *** this study,we proposed a deep learning network,namely,CResFormer,with dual feature extraction to improve accuracy in classifying such ***,fixed segmentation of dual-lead ECG signals without preprocessing was used as input ***,one-dimensional convolutional layers performed moderate dimensionality reduction to accommodate subsequent feature ***,ResNet residual network block layers and transformer encoder layers sequentially performed feature extraction to obtain key associated abstract ***,the Softmax function was used for ***,the focal loss function is used when dealing with unbalanced *** average accuracy,sensitivity,positive predictive value,and specificity of four classifications of severe cardiovascular diseases are 99.84%,99.68%,99.71%,and 99.90%in intra-patient experiments,respectively,and 97.48%,93.54%,96.30%,and 97.89%in inter-patient experiments,*** addition,the model performs well in unbalanced datasets and shows good noise ***,the model has great application potential in diagnosing CAD,MI,and CHF in the actual clinical environment.

关键词： dual-lead ECG signals coronary artery disease myocardial infarction congestive heart failure interpatient experiments intra-patient experiments CResFormer

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Study of HCP→FCC phase transformation mechanism under different hot compression rates of AZ31 magnesium alloy

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Journal of Magnesium and Alloys 2024年第9期12卷 3685-3697页

作者： Chun Xue Tingzhuang Han Bo Gao Qianhua Yang Zhibing Chu Leifeng Tuo College of Material Science and Engineering Taiyuan University of Science and TechnologyTaiyuan030024China College of Material Science and Engineering Northwestern Polytechnical UniversityXi’an710060China Analytical Test Center Taiyuan University of Science and TechnologyTaiyuan030024China College of Material Science and Engineering Central south universityChangsha410083China

At present,there are few studies on the phase transition during the thermocompression plastic deformation of magnesium *** this study,the evolution model of thermal compression plastic of AZ31 magnesium alloy was constructed by molecular dynamics,and the phase transition relationship between HCP and FCC at different thermal compression rates was *** combining GLEEBLE thermal compression experiment with transmission electron microscopy experiment,high-resolution transmission electron microscopy images were taken to analyze the transition rules between HCP and FCC during plastic deformation at different thermal compression rates,and the accuracy of molecular dynamics analysis was *** is found that the slip of Shockley’s incomplete dislocation produces obvious HCP→FCC phase transition at low strain rate and base plane dislocation at high strain rate,which makes the amorphous phase transition of HCP→OTHER more obvious,which provides theoretical guidance for the formulation of forming mechanism and preparation process of magnesium alloy.

关键词： AZ31 magnesium alloy Compression ratio Phase transition MD simulation TEM analysis

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Effect of temperature compensation on properties and interfacial structure evolution of Al/CFRTP ultrasonic welded joints

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Journal of Iron and Steel Research International 2024年第10期31卷 2505-2519页

作者： Kai-hang Zhu Yong-zhen Liang Liu-kai Li Ting-ting Zhang Wen-xian Wang College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan030024ShanxiChina Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment of Ministry of Education Taiyuan University of TechnologyTaiyuan030024ShanxiChina College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024ShanxiChina

5052 Al and carbon fiber-reinforced polyamide 6 composite(CF-PA6)were jointed via ultrasonic welding with the assistance of temperature compensation *** effects of the ultrasonic welding time and temperature compensation on the microstructure and mechanical properties of the joints were *** analysis of the wettability and fluidity of the molten carbon fiber-reinforced thermoplastic composites(CFRTP),the bonding mechanism and failure path of Al/CFRTP were *** results show that under the conditions of temperature compensation of 220°C and welding time of 1500 ms,the joint strength of the two components reaches 2480.4 N,which is 813.6%higher than that of Al/CFRTP components obtained at room ***,temperature compensation prolonged the wetting time of molten CFRTP on the aluminum alloy *** the fluidity and wettability were coordinated with each other,a high-quality joint was *** addition,the ultrasonic welding process of Al/CFRTP mainly relies on“physical adsorption,”“diffusion effect,”and“mechanical locking effect”to achieve sufficient bonding,and the effect of hydrogen bonding is weak.

关键词： Carbon fiber-reinforced polyamide 6 composite Ultrasonic welding Temperature compensation Mechanical property Bonding mechanism

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Anchoring thiol-rich traps in 1D channel wall of metal-organic framework for efficient removal of mercury ions

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Chinese Chemical Letters 2025年第2期36卷 404-407页

作者： Xudong Zhao Yuxuan Wang Xinxin Gao Xinli Gao Meihua Wang Hongliang Huang Baosheng Liu College of Chemical Engineering and Technology Taiyuan University of Science and TechnologyTaiyuan 030024China Instrumental Analysis Center Taiyuan University of Science and TechnologyTaiyuan 030024China College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China State Key Laboratory of Separation Membranes and Membrane Processes School of Chemical Engineering and TechnologyTiangong UniversityTianjin 300387China

Metal-organic frameworks(MOFs)attract broad interests in mercury(Hg)ion adsorption field,while unreasonable distribution of active groups commonly restricts their utilization *** this work,we constructed a new MOF(TYUST-6)with dense thiol-rich traps in the 1D pore *** accessible channel and rational distribution of thiols allow the smooth diffusion of Hg ions and thereby result in a high Langmuir adsorption capacity of 1347.6 mg/g,almost reaching the theoretical maximum(1444.3 mg/g).Adsorption equilibrium needs 10 and 30 min at the initial concentrations of 10 and 100 mg/L,*** co-existing ions and solution pH show almost negligible interferences on the adsorption,and adsorbent regeneration can be well *** experimental characterizations and theoretical calculations,the thiol groups in the pore wall are proved to be the dominant interaction ***,this work reports a novel high-capacity adsorbent for Hg^(2+),and proposes a feasible guideline for designing effective adsorbents.

关键词： Metal-organic frameworks Thiol groups Mercury ion Adsorption Waste water treatment

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Attentional multi-feature fusion for spoofing-aware speaker verification

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International Journal of Speech technology 2024年第2期27卷 377-387页

作者： Shen, Qian Guo, Mengxi Huang, YiDa Ma, Jianfen Department of Computer Science and Technology Taiyuan University of Technology Shanxi China

The Spoofing-Aware Speaker Verification (SASV) system is designed to protect automatic speaker verification (ASV) systems from potential speech spoofing attacks by integrating the ASV and countermeasure systems. The optimization of the ASV system can further enhance the resistance of the SASV system to various spoofing methods. Thus, an Attentional Multi-Feature Fusion framework is proposed in this paper to enhance the speech feature content in the ASV system, aiming to mitigate security vulnerabilities. Furthermore, for feature modeling, we introduce the Conformer module, which combines convolutional neural networks and Transformers to effectively capture both local and global features while extracting fixed-dimensional speaker embedding vectors. The experimental results demonstrate that the proposed ASV system achieves a nearly 25% improvement compared to the baseline ASV system. Furthermore, the SASV system, based on the proposed ASV system, demonstrates nearly 33% and 34% improvements in spoofing awareness with score-based fusion and embedding-based fusion strategies, respectively. This implies that the improved SASV system is capable of detecting and recognizing speech-spoofing attacks more effectively. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2024.

关键词： Embeddings

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Preparation of TiO_(2) Nano-Flower Coating on Ti Substrates with Good Physical Sterilization Effect and Biocompatibility

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Acta Metallurgica Sinica(English Letters) 2024年第9期37卷 1581-1589页

作者： Ruoyu Di Yonghua Sun Runhua Yao Sen Pei Xiaohong Yao Ruiqiang Hang Shanxi Key Laboratory of Biomedical Metal Materials College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan030024China College of Safety and Emergency Management Engineering Taiyuan University of TechnologyTaiyuan030024China

We report a facile solution method to form titanium oxide(TiO_(2))nano-flower structure on the titanium(Ti)substrates for realizing good physical sterilization and *** first prepare TiO_(2) nanotubes(NT)with a diameter of about 80-100 nm and a length of about 5μm on Ti substrates by anodization,which is utilized as ***,we employ immersion treatment in different concentrations of phosphoric acid solution at 75℃ for 5 h to realize the transformation from TiO_(2) NT to TiO_(2) nano-flower *** addition,we studied the effects of phosphoric acid concentration(1 wt%,2.5 wt%,5 wt% and 10 wt%)on the TiO_(2) nano-flower structure,and the antibacterial properties and biocompatibility of the TiO_(2) nano-flower *** results show that TiO_(2) nano-flower structure become larger and thicker with the increase in the phosphoric acid concentration,and the thickness of the coating can reach 6.88μ***,the TiO_(2) nano-flower structure shows good physical sterilization effect,especially for the TiO_(2) nano-flower structure formed in 10 wt%H^(3)PO_(4) solution,the antibacterial rate can reach 95%.In addition,the TiO_(2) nano-flower structure have no toxicity to the osteoblasts and support cell growth.

关键词： Anodization Biocompatibility Physical sterilization TiO_(2)nano-flower

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An effective strategy of constructing multi-metallic oxides of ZnO/ CoNiO_(2)/CoO/C microflowers for improved supercapacitive performance

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Chinese Journal of Chemical Engineering 2024年第3期67卷 1-8页

作者： Wei Guo Yan Zhang Xiaxin Lei Shuang Wang College of Physics Taiyuan University of TechnologyJinzhong 030600China College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of TechnologyTaiyuan 030024China

In this work,a new ZnO/CoNiO_(2)/CoO/C metal oxides composite is prepared by cost-effective hydrothermal method coupled with annealing process under N_(2) ***,the oxidation-defect annealing environment is conducive to both morphology and component of the composite,which flower-like ZnO/CoNiO_(2)/CoO/C is *** from good chemical stability of ZnO,high energy capacity of CoNiO_(2) and CoO and good conductivity of C,the as-prepared sample shows promising electrochemical behavior,including the specific capacity of 1435 C·g^(-1) at 1 A·g^(-1),capacity retention of 87.3%at 20 A·g^(-1),and cycling stability of 90.5%for 3000 cycles at 5 A·g^(-1),***,the prepared ZnO/CoNiO_(2)/CoO/C/NF//AC aqueous hybrid supercapacitors device delivers the best specific energy of 55.9 W·h·kg^(-1) at 850 W·kg^(-1).The results reflect that the as-prepared ZnO/CoNiO_(2)/CoO/C microflowers are considered as high performance electrode materials for supercapacitor,and the strategy mentioned in this paper is benefit to prepare mixed metal oxides composite for energy conversion and storage.

关键词： Composites Electrochemistry Hydrothermal Transition metal oxides Structural control Supercapacitors

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