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Prediction of film ratings based on domain adaptive transfer learning

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High Technology Letters 2023年第1期29卷 98-104页

作者：舒展 duan yong School of Information Science and Engineering Shenyang University of TechnologyShenyang 110870P.R.China

This paper examines the prediction of film ***,in the data feature engineering,feature construction is performed based on the original features of the film ***,the clustering algorithm is utilized to remove singular film samples,and feature selections are carried *** solving the problem that film samples of the target domain are unlabelled,it is impossible to train a model and address the inconsistency in the feature dimension for film samples from the source ***,the domain adaptive transfer learning model combined with dimensionality reduction algorithms is adopted in this *** the same time,in order to reduce the prediction error of models,the stacking ensemble learning model for regression is also ***,through comparative experiments,the effectiveness of the proposed method is verified,which proves to be better predicting film ratings in the target domain.

关键词： prediction of film rating domain adaptive transfer component analysis(TCA) correlation alignment(CORAL) stacking

Personalized movie recommendation method based on ensemble learning

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High Technology Letters 2022年第1期28卷 56-62页

作者： YANG Kun duan yong School of Information Science and Engineering Shenyang University of TechnologyShenyang 110870P.R.China

Aiming at the personalized movie recommendation problem,a recommendation algorithm in-tegrating manifold learning and ensemble learning is *** this work,manifold learning is used to reduce the dimension of data so that both time and space complexities of the model are ***,gradient boosting decision tree(GBDT)is used to train the target user profile prediction *** on the recommendation results,Bayesian optimization algorithm is applied to optimize the recommendation model,which can effectively improve the prediction *** experimental results show that the proposed algorithm can improve the accuracy of movie recommendation.

关键词： gradient boosting decision tree(GBDT) recommendation algorithm manifold learn-ing ensemble learning Bayesian optimization

Few-shot image recognition based on multi-scale features prototypical network

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High Technology Letters 2024年第3期30卷 280-289页

作者： LIU Jiatong duan yong School of Information Science Engineering Shenyang University of TechnologyShenyang 110870P.R.China Shenyang Key Laboratory of Advanced Computing and Application Innovation Shenyang 110870P.R.China

In order to improve the model􀆳s capability in expressing features during few-shot learning,a multi-scale features prototypical network(MS-PN)algorithm is *** metric learning algo-rithm is employed to extract image features and project them into a feature space,thus evaluating the similarity between samples based on their relative distances within the metric *** sufficiently extract feature information from limited sample data and mitigate the impact of constrained data vol-ume,a multi-scale feature extraction network is presented to capture data features at various scales during the process of image feature ***,the position of the prototype is fine-tuned by assigning weights to data points to mitigate the influence of outliers on the *** loss function integrates contrastive loss and label-smoothing to bring similar data points closer and separate dissimilar data points within the metric *** evaluations are conducted on small-sample datasets mini-ImageNet and *** method in this paper can achieve higher classification ***,in the 5-way 1-shot experiment,classification accuracy reaches 50.13%and 66.79%respectively on these two ***,in the 5-way 5-shot ex-periment,accuracy of 66.79%and 85.91%are observed,respectively.

关键词： few-shot learning multi-scale feature prototypical network channel attention label-smoothing

Berry phase and topological effects of phonons

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National Science Review 2018年第3期5卷 314-316页

作者： Yizhou Liu yong Xu Wenhui duan State Key Laboratory of Low Dimensional Quantum Physics Department of Physics Tsinghua University Collaborative Innovation Center of Quantum Matter RIKEN Center for Emergent Matter Science (CEMS) Institute for Advanced Study Tsinghua University

Phonons as collective excitations of lattice vibrations are the main heat carriers in *** effort has been devoted to the investigation of phonons and related properties,giving rise to an intriguing field of phononics,which is of great importance to many practical applications,including heat dissipation,thermal barrier coating,thermoelectrics and thermal control devices[1].Meanwhile,research into topology-related physics,awarded the 2016 Nobel Prize in Physics,has led to discoveries of various exotic quantum states of matter,including the quantum(anomalous/spin)Hall

关键词： Berry phase and topological effects of phonons TRS

Communication Mechanism and Algorithm of Composite Location Analysis of Emergency Communication based on Rail

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Computers, Materials & Continua 2018年第11期57卷 321-340页

作者： yong Jiang Xiaolin Zhong yong Guo Meixia duan College of geophysics Chengdu University of TechnologyChengdu610059China College of Information Engineering North China University of Water Resources and Electric PowerZhengzhou450045China

The emergency communication system based on rail is an unconventional emergency communication mode,it is a complement equipment for that conventional communication system can’t work while tunnel mine accident *** of transmission channel is the widely existing rail in the *** this paper we analyzed the characteristics of the rail transmission channel,verified the feasibility that information is transmitted by vibration signal in rail,we proposed the realization plan of the *** protocol and processing mechanism suitable for rail transmission are designed according to the characteristics of channel bandwidth and low data *** communication with low bit rate and low bit error is realized in the communication simulation *** the simplified model,we realized to transmit recognition speech information,and the error rate of the key text information is low to *** most concerned problem of personnel location in the mine disaster rescue is proposed,the composite algorithm is based on the model of signal amplitude attenuation,key node information and data frame transmission *** information of hitting point can be achieved within the simplified model of the ***,we discuss the characteristics of vibration signals passing through different channels.

关键词： Emergency communication elastic wave attenuation composite locating algorithm rfc2544.

Adaptive finite-time backstepping control for attitude tracking of spacecraft based on rotation matrix

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Chinese Journal of Aeronautics 2014年第2期27卷 375-382页

作者： Guo yong song Shenmin Center for Control Theory and Guidance Technology Harbin Institute of Technology

This paper investigates two finite-time controllers for attitude control of spacecraft based on rotation matrix by an adaptive backstepping method. Rotation matrix can overcome the draw- backs of unwinding which makes a spacecraft perform a large-angle maneuver when a small-angle maneuver in the opposite rotational direction is sufficient to achieve the objective, With the use of adaptive control, the first robust finite-time controller is continuous without a chattering phenom- enon. The second robust finite-time controller can compensate external disturbances with unknown bounds. Theoretical analysis shows that both controllers can make a spacecraft following a time-varying reference attitude signal in finite time and guarantee the stability of the overall closed-loop system. Numerical simulations are presented to demonstrate the effectiveness of the proposed control schemes.

关键词： Adaptive control Attitude control Backstepping Finite-time control Robustness

A greenstone belt in southeast Tibet:An accreted middle–late Permian oceanic plateau

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Geoscience Frontiers 2023年第3期14卷 117-130页

作者： Bin Wang Chao-Ming Xie Chris Yakymchuk yong-sheng Dong Yu-hang song Meng-long duan College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural Resources of ChinaChangchun 130061China Research Center for Tibetan Plateau Jilin UniversityChangchun 130061China Department of Earth and Environmental Sciences University of WaterlooWaterlooOntario N2L 3G1Canada

Studies of accreted oceanic plateau sections provide crucial information on their structures,compositions,and *** investigate the petrogenesis of ultramafic–mafic rocks in the Tangjia–Sumdo greenstone belt of southeast Tibet using petrography,whole-rock geochemistry,and U-Pb zircon *** rocks are divided into four groups based on geochemical characteristics that include depleted and tholeiitic mafic rocks,transitional mafic rocks,enriched and alkaline mafic rocks,and picritic ultramafic *** and tholeiitic mafic rocks have the oldest crystallization ages(-272 Ma),followed by picritic ultramafic rocks(-270 Ma),transitional mafic rocks(267–254 Ma),and enriched and alkaline mafic rocks(252–250 Ma).Hafnium and neodymium isotope ratios of depleted and tholeiitic mafic rocks(ε_(Hf)(t)=+13.1–+16.9;ε_(Nd)(t)=+6.9–+7.1),transitional mafic rocks(ε_(Hf)(t)=+1.8–+16.9;ε_(Nd)(t)=+0.8–+5.5),enriched and alkaline mafic rocks(ε_(Hf)(t)=+0.5–+5.4;ε_(Nd)(t)=1.5 to+1.9)and picritic ultramafic rocks(ε_(Hf)(t)=+14.9–+17.2;ε_(Nd)(t)=+7.8–+9.0)are similar to those of N-MORB,E-MORB,OIB and depleted-type picritic mafic rocks in other oceanic plateaus,*** geochemical characteristics of the depleted and tholeiitic mafic rocks suggest that they formed by partial melting of depleted spinel lherzolite in a mid-ocean ridge setting,whereas the picritic ultramafic rocks suggest a high degree of partial melting of depleted lherzolite in a hot mantle plume *** transitional mafic rocks formed by partial melting of moderately enriched garnet *** youngest rocks(enriched and alkaline mafic rocks)formed by partial melting of a more enriched garnet lherzolite(compared to transitional mafic rocks)at relatively low *** propose that the depleted and tholeiitic mafic rocks represent normal oceanic crust of the Sumdo Paleo-Tethys Ocean and the transitional mafic rocks,enriched and alkaline mafic rocks and picritic ultramafic rocks are the

关键词： Oceanic plateau Mantle plume Paleo-Tethys Tibet Greenstone belts

Data Gathering in Wireless Sensor Networks Via Regular Low Density Parity Check Matrix

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IEEE/CAA Journal of Automatica Sinica 2018年第1期5卷 83-91页

作者： Xiaoxia song yong Li Department of Computer Science ShanxiDatong University

A great challenge faced by wireless sensor networks(WSNs) is to reduce energy consumption of sensor nodes. Fortunately, the data gathering via random sensing can save energy of sensor nodes. Nevertheless, its randomness and density usually result in difficult implementations, high computation complexity and large storage spaces in practical settings. So the deterministic sparse sensing matrices are desired in some situations. However,it is difficult to guarantee the performance of deterministic sensing matrix by the acknowledged metrics. In this paper, we construct a class of deterministic sparse sensing matrices with statistical versions of restricted isometry property(St RIP) via regular low density parity check(RLDPC) matrices. The key idea of our construction is to achieve small mutual coherence of the matrices by confining the column weights of RLDPC matrices such that St RIP is satisfied. Besides, we prove that the constructed sensing matrices have the same scale of measurement numbers as the dense measurements. We also propose a data gathering method based on RLDPC matrix. Experimental results verify that the constructed sensing matrices have better reconstruction performance, compared to the Gaussian, Bernoulli, and CSLDPC matrices. And we also verify that the data gathering via RLDPC matrix can reduce energy consumption of WSNs.

关键词： Data gathering regular low density parity check(RLDPC) matrix sensing matrix signal reconstruction wireless sensor networks(WSNs)

Remote ischemic preconditioning protects liver ischemia-reperfusion injury by regulating eNOS-NO pathway and liver microRNA expressions in fatty liver rats

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Hepatobiliary & Pancreatic Diseases International 2017年第4期16卷 387-394页

作者： Yun-Fei duan yong An Feng Zhu yong Jiang Department of Hepatobiliary Surgery The Third Affiliated Hospital of Soochow UniversityChangzhou 213003China

BACKGROUND: Ischemic preconditioning (IPC) is a strategy to reduce ischemia-reperfusion (I/R) injury. The protective effect of remote ischemic preconditioning (RIPC) on liver I/R injury is not clear. This study aimed to investigate the roles of RIPC in liver I/R in fatty liver rats and the involvement of endothelial nitric oxide synthase-nitric oxide (eNOS-NO) pathway and microRNA expressions in this process. METHODS: A total of 32 fatty rats were randomly divided into the sham group, I/R group, RIPC group and RIPC+I/R group. Serum alanine aminotransferase (ALT), aspartate aminotransferase (AST) and nitric oxide (NO) were measured. Hematoxylin-eosin staining was used to observe histological changes of liver tissues, TUNEL to detect hepatocyte apoptosis, and immunohistochemistry assay to detect heat shock protein 70 (HSP70) expression. Western blotting was used to detect liver inducible NOS (iNOS) and eNOS protein levels and realtime quantitative polymerase chain reaction to detect miR-34a, miR-122 and miR-27b expressions. RESULTS: Compared with the sham and RIPC groups, serum ALT, AST and iNOS in liver tissue were significantly higher in other two groups, while serum NO and eNOS in liver tissue were lower, and varying degrees of edema, degeneration and inflammatory cell infiltration were found. Cell apoptosis number was slightly lower in the RIPC+I/R group than that in I/R group. Compared with the sham group, HSP70 expressions were significantly increased in other three groups (all P<0.05). Compared with the sham and RIPC groups, elevated miR-34a expressions were found in I/R and RIPC+I/R groups (P<0.05). MiR-122 and miR-27b were found significantly decreased in I/R and RIPC+I/R groups compared with the sham and RIPC groups (all P<0.05). CONCLUSION: RIPC can reduce fatty liver I/R injury by affecting the eNOS-NO pathway and liver microRNA expressions.

关键词： fatty liver ischemia-reperfusion remote ischemic preconditioning nitric oxide heat shock protein 70 endothelial nitric oxide synthase inducible nitric oxide synthase liver microRNA