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GraphCrop: Subgraph Cropping for Graph Classification [article]

Yiwei Wang, Wei Wang, Yuxuan Liang, Yujun Cai, Bryan Hooi
2020 arXiv   pre-print
On graph data, (Wang et al. 2020 ) proposes NodeAug to augment and utilize the unlabeled nodes in the task of semi-supervised node classification.  ...  To combat the over-fitting of neural networks, data augmentation has been demonstrated to be effective in the classification of image data (Perez and Wang 2017) .  ... 
arXiv:2009.10564v1 fatcat:6vjax2fq2jdorlq235cswdkqbi

On private information retrieval array codes [article]

Yiwei Zhang, Xin Wang, Hengjia Wei, Gennian Ge
2016 arXiv   pre-print
Given a database, the private information retrieval (PIR) protocol allows a user to make queries to several servers and retrieve a certain item of the database via the feedbacks, without revealing the privacy of the specific item to any single server. Classical models of PIR protocols require that each server stores a whole copy of the database. Recently new PIR models are proposed with coding techniques arising from distributed storage system. In these new models each server only stores a
more » ... ion 1/s of the whole database, where s>1 is a given rational number. PIR array codes are recently proposed by Fazeli, Vardy and Yaakobi to characterize the new models. Consider a PIR array code with m servers and the k-PIR property (which indicates that these m servers may emulate any efficient k-PIR protocol). The central problem is to design PIR array codes with optimal rate k/m. Our contribution to this problem is three-fold. First, for the case 12, we derive a new upper bound on the rate of a PIR array code. Finally, for the case s>2, we analyze a new construction by Blackburn and Etzion and show that its rate is better than all the other existing constructions.
arXiv:1609.09167v1 fatcat:zv3h7dbrlnf2dolrduwfhdayvm

CD47 Blockade Inhibits Tumor Progression through Promoting Phagocytosis of Tumor Cells by M2 Polarized Macrophages in Endometrial Cancer

Shenglan Gu, Ting Ni, Jing Wang, Yao Liu, Qiong Fan, Yiwei Wang, Ting Huang, Yiwei Chu, Xiao Sun, Yudong Wang
2018 Journal of Immunology Research  
Yuedi Wang, and Dr. Weibin Wu for technical support. The authors would also like to thank Dr. Xueli Zhang for English revision. Supplementary Materials Supplementary Figure  ... 
doi:10.1155/2018/6156757 pmid:30525058 pmcid:PMC6247569 fatcat:n2v7wsh2k5crnomspwez7jx7zy

Time-Aware Neighbor Sampling for Temporal Graph Networks [article]

Yiwei Wang, Yujun Cai, Yuxuan Liang, Henghui Ding, Changhu Wang, Bryan Hooi
2021 arXiv   pre-print
We present a new neighbor sampling method on temporal graphs. In a temporal graph, predicting different nodes' time-varying properties can require the receptive neighborhood of various temporal scales. In this work, we propose the TNS (Time-aware Neighbor Sampling) method: TNS learns from temporal information to provide an adaptive receptive neighborhood for every node at any time. Learning how to sample neighbors is non-trivial, since the neighbor indices in time order are discrete and not
more » ... erentiable. To address this challenge, we transform neighbor indices from discrete values to continuous ones by interpolating the neighbors' messages. TNS can be flexibly incorporated into popular temporal graph networks to improve their effectiveness without increasing their time complexity. TNS can be trained in an end-to-end manner. It needs no extra supervision and is automatically and implicitly guided to sample the neighbors that are most beneficial for prediction. Empirical results on multiple standard datasets show that TNS yields significant gains on edge prediction and node classification.
arXiv:2112.09845v1 fatcat:2akcrdy6z5c6pilubm2rsng4sq

Investigation of Tannins Transformation in Sanguisorbae Radix Over Carbonizing by Stir-Frying

Wei Gu, Wei Gu, Wei Gu, Hao Wang, Man Su, Yiwei Wang, Yiwei Wang, Fei Xu, Fei Xu, Qinglian Hu, Xuyi Cai, Jinyun Song (+6 others)
2022 Frontiers in Molecular Biosciences  
Such rapid reduction of catechin was also observed over the processing of Rhei Radix Et Rhizoma, Moutan Cortex, and Ploygoni multiflora Radix (Wang et al., 2010; Huang et al., 2016; Huang, 2018) .  ... 
doi:10.3389/fmolb.2022.762224 pmid:35309515 pmcid:PMC8924296 doaj:159e3993277e46c2ae728dee5ba960fd fatcat:vyju5emqdfe55mx5kh72l6edha

Few-shot Scene-adaptive Anomaly Detection [article]

Yiwei Lu, Frank Yu, Mahesh Kumar Krishna Reddy, Yang Wang
2020 arXiv   pre-print
We address the problem of anomaly detection in videos. The goal is to identify unusual behaviours automatically by learning exclusively from normal videos. Most existing approaches are usually data-hungry and have limited generalization abilities. They usually need to be trained on a large number of videos from a target scene to achieve good results in that scene. In this paper, we propose a novel few-shot scene-adaptive anomaly detection problem to address the limitations of previous
more » ... . Our goal is to learn to detect anomalies in a previously unseen scene with only a few frames. A reliable solution for this new problem will have huge potential in real-world applications since it is expensive to collect a massive amount of data for each target scene. We propose a meta-learning based approach for solving this new problem; extensive experimental results demonstrate the effectiveness of our proposed method.
arXiv:2007.07843v1 fatcat:ufngnm5suzarzjnyuwhge3lnc4

Coding schemes for locally balanced constraints [article]

Chen Wang, Ziyang Lu, Zhaojun Lan, Gennian Ge, Yiwei Zhang
2022 arXiv   pre-print
Motivated by applications in DNA-based storage, we study explicit encoding and decoding schemes of binary strings satisfying locally balanced constraints, where the (ℓ,δ)-locally balanced constraint requires that the weight of any consecutive substring of length ℓ is between ℓ/2-δ and ℓ/2+δ. In this paper we present coding schemes for the strongly locally balanced constraints and the locally balanced constraints, respectively. Moreover, we introduce an additional result on the linear recurrence
more » ... formula of the number of binary strings which are (6,1)-locally balanced, as a further attempt to both capacity characterization and new coding strategies for locally balanced constraints.
arXiv:2201.12238v1 fatcat:mhmqaz3kh5c3lmwrke2vjnnr6i

GraphAnoGAN: Detecting Anomalous Snapshots from Attributed Graphs [article]

Siddharth Bhatia, Yiwei Wang, Bryan Hooi, Tanmoy Chakraborty
2021 arXiv   pre-print
Finding anomalous snapshots from a graph has garnered huge attention recently. Existing studies address the problem using shallow learning mechanisms such as subspace selection, ego-network, or community analysis. These models do not take into account the multifaceted interactions between the structure and attributes in the network. In this paper, we propose GraphAnoGAN, an anomalous snapshot ranking framework, which consists of two core components -- generative and discriminative models.
more » ... ically, the generative model learns to approximate the distribution of anomalous samples from the candidate set of graph snapshots, and the discriminative model detects whether the sampled snapshot is from the ground-truth or not. Experiments on 4 real-world networks show that GraphAnoGAN outperforms 6 baselines with a significant margin (28.29% and 22.01% higher precision and recall, respectively compared to the best baseline, averaged across all datasets).
arXiv:2106.15504v1 fatcat:nd2i6qf5rbabzcpgunzdjef6se

Low-Discrepancy Points via Energetic Variational Inference [article]

Yindong Chen, Yiwei Wang, Lulu Kang, Chun Liu
2021 arXiv   pre-print
Based on the general energetic variational inference framework by Wang et. al. (2021), minimizing the kernel discrepancy is transformed to solving a dynamic ODE system via the explicit Euler scheme.  ...  Some other dissipation functionals and numerical schemes for the EVI framework are suggested in Liu and Wang (2020) and Wang et al. (2021) .  ...  Readers can find the rigorous and concrete explanation in Wang et al. (2021) .  ... 
arXiv:2111.10722v1 fatcat:atipxgtnone5zfujdieqkeb2am

Structure-Aware Label Smoothing for Graph Neural Networks [article]

Yiwei Wang, Yujun Cai, Yuxuan Liang, Wei Wang, Henghui Ding, Muhao Chen, Jing Tang, Bryan Hooi
2021 arXiv   pre-print
., 2019; Wang and Leskovec, 2020] .  ...  Existing work finds that 'message passing' reduces the distance in the embedding space between the connected nodes [Rong et al., 2019; Wang and Leskovec, 2020] .  ... 
arXiv:2112.00499v1 fatcat:ivrobrklard25evmidaik4zqla

Evaluation of radiative depolarization in the future circular electron-positron collider [article]

Wenhao Xia, Zhe Duan, Yiwei Wang, Bin Wang, Jie Gao
2022 arXiv   pre-print
Polarized lepton beams are an important design aspect of the future 100 km-scale Circular Electron-Positron Collider (CEPC). Precision beam energy calibration using resonant depolarization, as well as longitudinally polarized colliding beams are being actively investigated. The achievable beam polarization level for different beam energies and application scenarios depend on the radiative depolarization in the collider rings. In this paper the radiative depolarization effects are evaluated for
more » ... the CEPC collider ring lattice with detailed machine imperfections and corrections. Simulations with the SLIM and Monte-Carlo approaches using the BMAD/PTC codes are compared with the theory of spin diffusion effects for ultra-high beam energies.
arXiv:2204.12718v1 fatcat:yhanxicacjahpkozumrntu22ja

Rebalancing of Power. The Case of China's Global Strategy. Book review: Wang Yiwei, Jeden pas, jedna droga. Co rozwój Chin oznacza dla świata. Wydawnictwo Adam Marszałek, Toruń 2016 (pp. 247), ISBN: 978–83–8019–427–4. Price: PLN 33.81

Mikołaj Lisewski
2016 Polish Political Science Yearbook  
Co rozwój Chin oznacza dla świata by Wang Yiwei, associate professor and director of the Institute of International Affairs and the Centre for EU Studies at Renmin University of China, was published in  ...  What is more, in my opinion, on the level of presenting political strategy, Wang Yiwei's book can be compared to Zbigniew Brzezinski's The Grand Chessboard or Alexandr Dugin's works.  ... 
doi:10.15804/ppsy2016036 fatcat:dztwlkg77rejnlqsd4fmi7qvdu

Multifaceted Regulation of PTEN Subcellular Distributions and Biological Functions

Tian Liu, Yiwei Wang, Yubing Wang, Andrew M. Chan
2019 Cancers  
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) is a tumor suppressor gene frequently found to be inactivated in over 30% of human cancers. PTEN encodes a 54-kDa lipid phosphatase that serves as a gatekeeper of the phosphoinositide 3-kinase pathway involved in the promotion of multiple pro-tumorigenic phenotypes. Although the PTEN protein plays a pivotal role in carcinogenesis, cumulative evidence has implicated it as a key signaling molecule in several other diseases as well,
more » ... h as diabetes, Alzheimer's disease, and autism spectrum disorders. This finding suggests that diverse cell types, especially differentiated cells, express PTEN. At the cellular level, PTEN is widely distributed in all subcellular compartments and organelles. Surprisingly, the cytoplasmic compartment, not the plasma membrane, is the predominant subcellular location of PTEN. More recently, the finding of a secreted 'long' isoform of PTEN and the presence of PTEN in the cell nucleus further revealed unexpected biological functions of this multifaceted molecule. At the regulatory level, PTEN activity, stability, and subcellular distribution are modulated by a fascinating array of post-translational modification events, including phosphorylation, ubiquitination, and sumoylation. Dysregulation of these regulatory mechanisms has been observed in various human diseases. In this review, we provide an up-to-date overview of the knowledge gained in the last decade on how different functional domains of PTEN regulate its biological functions, with special emphasis on its subcellular distribution. This review also highlights the findings of published studies that have reported how mutational alterations in specific PTEN domains can lead to pathogenesis in humans.
doi:10.3390/cancers11091247 pmid:31454965 pmcid:PMC6770588 fatcat:xm4ohhowjjeabkqebrm5r3ct7y

Some Recent Advances in Energetic Variational Approaches

Yiwei Wang, Chun Liu
2022 Entropy  
In this paper, we summarize some recent advances related to the energetic variational approach (EnVarA), a general variational framework of building thermodynamically consistent models for complex fluids, by some examples. Particular focus will be placed on how to model systems involving chemo-mechanical couplings and non-isothermal effects.
doi:10.3390/e24050721 fatcat:rbczs73ntvhhflcbmdvlualuea

Studies on Ejection of Cell Culture Medium by Electrohydrodynamic Method

Zhang Haiyi, Wang Can, Wang Fei, Wang Yiwei, Wang Zhihai, Chen Xi, Gui Jingang, Y. Wang
2019 E3S Web of Conferences  
Sample deposition based on micro-droplet ejection has broad application prospects in the field of biomedicine. Ejection of RPMI-1640 medium (without and with cells) is investigated experimentally using a home-build electrohydrodynamic (EHD) ejection system, consisting of a liquid supplier and a nozzle, a high voltage source, a droplet collector, and a high speed photography module. Electric voltage is applied between the nozzle and the droplet collector. The liquid surface is charged and the
more » ... ction takes place when electric force overcomes the surface tension. The ejection process is studied by using high speed photography and image processing. At low voltage, a uniform ejection state is established with ejection frequency typically less than 50Hertz. At sufficiently high voltage, another uniform ejection state is reached with ejection frequency as high as 1300Hz. Human peripheral blood mononuclear cells, after ejection, show survival rates higher than 79%, manifesting EHD ejection as a promising technique for cell printing.
doi:10.1051/e3sconf/20197801007 fatcat:fdjxpyizeja2xgzadorzzs22oy
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