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DiscoStyle:Multi-level Logistic Ranking for Personalized Image Style Preference Inference

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International Journal of Automation and computing 2020年第5期17卷 637-651页

作者： zhen-wei He Lei Zhang Fang-Yi Liu School of Microelectronics and Communication Engineering Chongqing UniversityChongqing 400044China

Learning based on facial features for detection and recognition of people′s identities,emotions and image aesthetics has been widely explored in computer vision and ***,automatic discovery of users′preferences to certain of faces(i.e.,style),to the best of our knowledge,has never been studied,due to the subjective,implicative,and uncertain characteristic of psychological ***,in this paper,we contribute to an answer to whether users′psychological preference can be modeled and computed after observing several *** this end,we first propose an efficient approach for discovering the personality preference related facial features from only a very few anchors selected by each user,and make accurate predictions and recommendations for ***,we propose to discover the style of faces(DiscoStyle)for human′s psychological preference inference towards personalized face recommendation system/*** are four merits of our DiscoStyle:1)Transfer learning is exploited from identity related facial feature representation to personality preference related facial feature.2)Appearance and geometric landmark feature are exploited for preference related feature augmentation.3)A multi-level logistic ranking model with on-line negative sample selection is proposed for on-line modeling and score prediction,which reflects the users′preference degree to gallery faces.4)A large dataset with different facial styles for human′s psychological preference inference is developed for the first *** show that our proposed DiscoStyle can well achieve users′preference reasoning and recommendation of preferred facial styles in different genders and races.

关键词： Facial preference feature representation logistic regression face recommendation transfer learning

Uncertain Multidisciplinary Design Optimization on Next Generation Subsea Production System by Using Surrogate Model and Interval Method

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China Ocean Engineering 2021年第4期35卷 609-621页

作者： WU Jia-hao zhen Xing-wei LIU Gang HUANG Yi School of Naval Architecture and Ocean Engineering Dalian University of TechnologyDalian 116024China

The innovative Next Generation Subsea Production System(NextGen SPS)concept is a newly proposed petroleum development solution in ultra-deep water *** definition of NextGen SPS involves several disciplines,which makes the design process *** this paper,the definition of NextGen SPS is modeled as an uncertain multidisciplinary design optimization(MDO)*** deterministic optimization model is formulated,and three concerning disciplines—cost calculation,hydrodynamic analysis and global performance analysis are *** model technique is applied in the latter two *** optimization(CO)architecture is utilized to organize the concerning disciplines.A deterministic CO framework with two disciplinelevel optimizations is proposed *** the uncertainties of design parameters and surrogate models are incorporated by using interval method,and uncertain CO frameworks with triple loop and double loop optimization structure are established *** optimization results illustrate that,although the deterministic MDO result achieves higher reduction in objective function than the uncertain MDO result,the latter is more reliable than the former.

关键词： next generation subsea production system multidisciplinary design optimization uncertain optimization collaborative optimization surrogate model interval method

Doubly heavy tetraquarks in an extended chromomagnetic model

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Chinese Physics C 2022年第1期46卷 43-66页

作者： Xin-zhen Weng wei-zhen Deng Shi-Lin Zhu Center of High Energy Physics Peking UniversityBeijing 100871China School of Physics and Astronomy Tel Aviv UniversityTel Aviv 69978Israel School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China

Using an extended chromomagnetic model,we perform a systematic study of the masses of doubly heavy *** find that the ground states of the doubly heavy tetraquarks are dominated by the color-triplet ■configuration,which is opposite to that of fully heavy *** combined results suggest that the color-triplet configuration becomes more important when the mass difference between the quarks and antiquarks *** find three stable states that lie below the thresholds of two pseudoscalar *** are the I^(P)=01^(+)nnbb tetraquark,I^(P)=1^(+)nncb tetraquark,and J^(P)=1^(+)nsbb tetraquark.

关键词： extended chromomagnetic model doubly heavy tetraquarks mass spectrum

Green synthesis of metal/C and metal oxide/C films by using natural membrane as support

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Frontiers of Materials Science 2014年第2期8卷 150-156页

作者： Cheng-zhen wei Hai-Feng MA Feng GAO Department of Materials Science and Engineering Nanjing University Nanjing 210093 China State Key Laboratory of Coordination Chemistry Coordination Chemistry Institute Nanjing National Laboratory of Microstructures Nanjing University Nanjing 210093 China

A protocol aiming at making use of the huge amount of naturally existing wastes such as defoliation, pericarp and egg shell for nanostructured composite materials was proposed. In this study, a green synthetic route using naturally existing membrane as support was developed for the synthesis of nanostructured and porous metalor metal oxide-carbon composite films. Different metallic ions （Co2＋, Ni2＋, Fe3＋, Mn2＋ or Cu2＋） can be easily adsorbed onto egg membranes and the followed calcination process results in the formation of Co/C, Ni/C, Fe304/C, MnO/C or CulCu2OICuOIC composite films. The electrochemical studies demonstrate that such composite films would have potential applications in energy fields. This method would provide a general green concept for chemical synthesis and be beneficial to the global sustainable future.

关键词： green synthesis metal metal oxide composite electrochemistry

Learning adaptive receptive fields for deep image parsing networks

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Computational Visual Media 2018年第3期4卷 231-244页

作者： zhen wei Yao Sun Junyu Lin Si Liu State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China. University of Chinese Academy of Sciences Beijing101408 China. Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China Key Laboratory of Intelligent Perception and Systems for High-Dimensional Information of Ministry of Education Nanjing University of Science and Technology Nanjing 210094 China.

In this paper,we introduce a novel approach to automatically regulate receptive fields in deep image parsing *** previous work which placed much importance on obtaining better receptive fields using manually selected dilated convolutional kernels,our approach uses two affine transformation layers in the network’s backbone and operates on feature *** maps are inflated or shrunk by the new layer,thereby changing the receptive fields in the following *** use of end-to-end training,the whole framework is data-driven,without laborious manual *** proposed method is generic across datasets and different *** have conducted extensive experiments on both general image parsing tasks,and face parsing tasks as concrete examples,to demonstrate the method’s superior ability to regulate over manual designs.

关键词： semantic segmentation receptive field data-driven face parsing

BHONEM:Binary High-Order Network Embedding Methods for Net worked-Guarantee Loans

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Journal of Computer Science & Technology 2019年第3期34卷 657-669页

作者： Da-wei Cheng Yi Tu zhen-wei Ma Zhi-Bin Niu Li-Qing Zhang Department of Computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Mathematical Science Shanghai Jiao Tong University.Shanghai 200240China School of Computer Software Tianjin UniversityTianjin 300354China

Networked-guarantee loans may cause systemic risk related concern for the government and banks in *** prediction of the default of enterprise loans is a typical machine learning based classification problem, and the networked guarantee makes this problem very difficult to solve. As we know, a complex network is usually stored and represented by an adjacency matrix. It is a high-dimensional and sparse matrix, whereas machine-learning methods usually need lowdimensional dense feature representations. Therefore, in this paper, we propose a binary higher-order network embedding method to learn the low-dimensional representations of a guarantee network. We first set vertices of this heterogeneous economic network by binary roles (guarantor and guarantee), and then define high-order adjacent measures based on their roles and economic domain knowledge. Afterwards, we design a penalty parameter in the objective function to balance the importance of network structure and adjacency. We optimize it by negative sampling based gradient descent algorithms,which solve the limitation of stochastic gradient descent on weighted edges without compromising efficiency. Finally, we test our proposed method on three real-world network datasets. The result shows that this method outperforms other start-of-the-art algorithms for both classification accuracy and robustness, especially in a guarantee network.

关键词： networked-guarantee loan high-order network embedding representative learning gradient descent

Sigma Decay at Finite Temperature and Density

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Chinese Physics Letters 2001年第3期18卷 344-346页

作者： ZHUANG Peng-Fei YANG zhen-wei Department of Physics Tsinghua UniversityBeijing 100084

Sigma decay and its relation with chiral phase transition are discussed at finite temperature and density in the framework of the Nambu-Jona-Lasinio *** decay rate for the processσ→2πto first order in 1/Nc(inverse number of colors)expansion is calculated as a function of temperature T and baryon density *** particular,only when the chiral phase transition happens around the tricritical point,theσdecay results in a non-thermal enhancement of pions in the final state distributions in relativistic heavy ion collisions.

关键词： decay chiral transition

Impact of Herbal Preparations on Outcomes of Highly Active Antiretroviral Therapy: A One-Year Prospective Cohort Study

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Chinese Journal of Integrative Medicine 2020年第7期26卷 497-501页

作者： SU Qi-jian SONG Ce LU zhen-zhen LIU zhen-wei XIAO Jian WU Fa-sheng Center for AIDS Research Ruikang Hospital Affiliated to Guangxi University of Chinese MedicineNanning(530011)China Departme nt of Chronic Non comm un icable Disease Prevention and Control Guangxi Center for Disease Prevention and ControlNanning(530028)China School of Basic Medical Science Guangxi University of Chinese MedicineNanning(530200)China Department of Oncology Ruikang Hospital Affiliated to Guangxi University of Chinese MedicineNanning(530011)China

Objective:To investigate the impacts of two herbal preparations for human immunodeficiency virus/aquired immune deficiency syndrome(HIV/AIDS)patients,Shenling Fuzheng Capsule(参灵扶正胶囊,SLFZC)and Qingdu Capsule(清毒胶囊,QDC),on the efficacy of highly active antiretroviral therapy(HAART).Methods:HIV/AIDS patients met the criteria were all enrolled in a 1-year cohort study,in which patients receiving HAART alone were designated as Group A,those receiving HAART in combination with SLFZC were designated as Group B,and those receiving HAART in combination with QDC were designated as Group C,100 cases in each *** dose of SLFZC was 1.48 g(4 capsules),3 times daily,and QDC 1.56 g(4 capsules),3 times daily.T cell subsets,HIV RNA and HIV-1 drug resistance were detected at enrollment and 1 year after *** were followed up every 3 months,during which side-effects and other clinical data were ***:After 1-year treatment,the median increment in CD4 counts was 165.0,178.0 and 145.0 cells/μL for Group A,B and C,*** RNA was undetectable in 94%of patients in Group A,96%in Group B and 92%in Group *** were no differences regarding the increment in CD4 counts,HIV RNA and frequency of HIV-1 drug resistance *** of the 14 suspected side-effect symptoms,*** and dizziness,were lower in Groups B and C than in Group A(P<0.05,respectively).Conclusion:SLFZC and QDC do not have a negative impact on immunological and virological response to HAART;however,these preparations are not as potent in reducing HAART-associated side-effects as anticipated.

关键词： human immunodeficiency syndrome aquired immune deficiency syndrome Chinese medicine Shenling Fuzheng Capsule Qingdu Capsule

The impacts of evaluation indices and normalization methods on E-TOPSIS optimization of return vent height for an impinging jet ventilation system

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Building Simulation 2022年第12期15卷 2081-2095页

作者： Chao Qin Shi-Hai Wu Hong-Qiang Fang wei-zhen Lu Department of Architecture and Civil Engineering City University of Hong KongHong KongChina School of Architecture and Art Central South UniversityChangshaChina

Stratified air distribution(STRAD)systems have been intensively investigated in recent decades for their energy-saving potential and good indoor air quality ***,the evaluation indices used to optimize STRAD systems and the normalization methods for weight calculation vary from one research to *** study aims to investigate the impacts of evaluation indices on the optimal return vent height of a room cooled by an impinging jet ventilation system(one type of STRAD system).The effects of several widely used normalization methods(i.e.,vector normalization,sum normalization,min-max normalization,and no normalization)on indices weights are *** evaluation indices are cooling coil load(Q_(coil)),energy-saving potential(ΔQ_(coil)),mean age of air(MAA),CO_(2) mass fraction,temperature difference between the head and ankles(ΔT_(0.1-1.1)),predicted mean vote(PMV),predicted percentage of dissatisfied(PPD),and draft rate(DR).The multi-criteria optimization method is the entropy-based technique for order preference by similarity to ideal solution(E-TOPSIS).As a result,the min-max normalization method evens the weight of each index and results in unreasonable relative ***,the raw matrix(i.e.,the normalization is omitted)is suggested for weight *** these indices,ΔT_(0.1-1.1) and PPD play critical ***ΔT_(0.1-1.1),the optimal return vent height changes from mid-level to near-floor,while without PPD,it changes to *** important result is that the Q_(coil) plays the most trivial role,followed by MAA and ***,the optimal return vent height is not determined by energy-saving performance but by performances of thermal comfort.

关键词： evaluation indices normalization method impinging jet ventilation return vent height E-TOPSIS