Results for "Yan Zhou"

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Cluster structures and subfans in scattering diagramsJan 14 2019We give more precise statements of Fock-Goncharov duality conjecture for cluster varieties parametrizing $PGL_{2}$-local systems on once punctured torus. Then we prove these statements. Along the way, using disjoint subfans in the scattering diagram, ... More
DeepMove: Learning Place Representations through Large Scale Movement DataJul 11 2018Jul 12 2018Understanding and reasoning about places and their relationships are critical for many applications. Places are traditionally curated by a small group of people as place gazetteers and are represented by an ID with spatial extent, category, and other ... More
Adaptive multi-fidelity polynomial chaos approach to Bayesian inference in inverse problemsJul 02 2018Dec 07 2018The polynomial chaos (PC) expansion has been widely used as a surrogate model in the Bayesian inference to speed up the Markov chain Monte Carlo (MCMC) calculations. However, the use of a PC surrogate introduces the modeling error, that may severely distort ... More
Biased Online Parameter Inference for State-Space ModelsMar 01 2015We consider Bayesian online static parameter estimation for state-space models. This is a very important problem, but is very computationally challenging as the state- of-the art methods that are exact, often have a computational cost that grows with ... More
The Essential Norm of Composition Operator between Generalized Bloch Spaces in Polydiscs and its ApplicationsMar 31 2005Dec 27 2005Let $U^{n}$ be the unit polydisc of ${\Bbb C}^{n}$ and $\phi=(\phi_1, >..., \phi_n)$ a holomorphic self-map of $U^{n}.$ By ${\cal B}^p(U^{n})$, ${\cal B}^p_{0}(U^{n})$ and ${\cal B}^p_{0*}(U^{n})$ denote the $p$-Bloch space, Little $p$-Bloch space and ... More
Doppler Boosting and Deboosting Effects in the Forward Relativistic Jets of AGNs and GRBsOct 15 2006It is widely accepted that the Doppler deboosting effects exist in counter relativistic jets. However, people often neglect another important fact that both Doppler boosting and deboosting effects could happen in forward relativistic jets. Such effects ... More
Compact Composition Operators on the Bloch Space in Bounded Symmetric DomainsApr 01 2005Let $\Omega$ be a bounded symmetric domain except the two exceptional domains of ${\Bbb C}^N$ and $\phi$ a holomorphic self-map of $\Omega.$ This paper gives a sufficient and necessary condition for the composition operator $C_{\phi}$ induced by $\phi$ ... More
Boltzmann Diffusive Limit with Maxwell Boundary ConditionSep 18 2018Based on a recent $L^{6}-L^{\infty}$ approach, validity of diffusive limit is established for both steady and unsteady Boltzmann equation in the presence of the classical Maxwell boundary condition for a full arrange of the accommodation coefficient $0 ... More
Yang monopoles and emergent three-dimensional topological defects in interacting bosonsOct 18 2017Oct 13 2018Yang monopole as a zero-dimensional topological defect has been well established in multiple fields in physics. However, it remains an intriguing question to understand interaction effects on Yang monopoles. Here, we show that collective motions of many ... More
Scaling of the Rashba spin-orbit torque in magnetic domain wallsSep 01 2017Jul 21 2019Spin-orbit torque in magnetic domain walls was investigated by solving the Pauli-Schr\"{o}dinger equation for the itinerant electrons. The Rashba interaction considered is derived from the violation of inversion symmetry at interfaces between ferromagnets ... More
An adaptive multi-fidelity PC-based ensemble Kalman inversion for inverse problemsSep 21 2018The ensemble Kalman inversion (EKI), as a derivative-free methodology, has been widely used in the parameter estimation of inverse problems. Unfortunately, its cost may become moderately large for systems described by high dimensional nonlinear PDEs, ... More
Mabuchi metrics and properness of the modified DING functionalSep 10 2017In this paper, we study Mabuchi metrics on Fano manifolds. We prove that Mabuchi metrics exist if the modified Ding functional is proper modulo a reductive subgroup of its automorphism group. On the other hand, the inverse that Mabuchi metrics implies ... More
State-domain Change Point Detection for Nonlinear Time Series RegressionApr 24 2019May 24 2019Change point detection in time series has attracted substantial interest, but most of the existing results have been focused on detecting change points in the time domain. This paper considers the situation where nonlinear time series have potential change ... More
How intelligent are convolutional neural networks?Sep 18 2017Oct 31 2017Motivated by the Gestalt pattern theory, and the Winograd Challenge for language understanding, we design synthetic experiments to investigate a deep learning algorithm's ability to infer simple (at least for human) visual concepts, such as symmetry, ... More
Stability Analysis of Integral Delay Systems with Multiple DelaysJan 27 2015This note is concerned with stability analysis of integral delay systems with multiple delays. To study this problem, the well-known Jensen inequality is generalized to the case of multiple terms by introducing an individual slack weighting matrix for ... More
Destination Choice Game: A Spatial Interaction Theory on Human MobilityFeb 14 2018Jun 23 2019With remarkable significance in migration prediction, global disease mitigation, urban planning and many others, an arresting challenge is to predict human mobility fluxes between any two locations. A number of methods have been proposed against the above ... More
Fast asynchronous updating algorithms for k-shell indicesNov 20 2016Identifying influential nodes in networks is a significant and challenging task. Among many centrality indices, the $k$-shell index performs very well in finding out influential spreaders. However, the traditional method for calculating the $k$-shell ... More
Casimir Pistons for Massive Scalar FieldsAug 01 2008The Casimir force on two-dimensional pistons for massive scalar fields with both Dirichlet and hybrid boundary conditions is computed. The physical result is obtained by making use of generalized $\zeta$-function regularization technique. The influence ... More
Properties of Two-Dimensional Silicon grown on Graphene SubstrateApr 05 2013The structure and electrical properties of a two-dimensional (2D) sheet of silicon on a graphene substrate are studied using first-principles calculations. A new corrugated rectangular structure of silicon is proposed to be the most energetically favorable ... More
Convergence of $L^2$-norm based adaptive finite element method for elliptic optimal control problemsAug 31 2016This paper aims to study the convergence of adaptive finite element method for control constrained elliptic optimal control problems under $L^2$-norm. We prove the contraction property and quasi-optimal complexity for the $L^2$-norm errors of both the ... More
Interactive Deep Colorization With Simultaneous Global and Local InputsJan 27 2018Colorization methods using deep neural networks have become a recent trend. However, most of them do not allow user inputs, or only allow limited user inputs (only global inputs or only local inputs), to control the output colorful images. The possible ... More
Pinning-depinning mechanism of the contact line during evaporation on chemically patterned surfaces: A lattice Boltzmann studySep 01 2016In this paper, the pinning and depinning mechanism of the contact line during droplet evaporation on chemically stripe-patterned surfaces is numerically investigated using a thermal multiphase lattice Boltzmann (LB) model with liquid-vapor phase change. ... More
High-topological-number magnetic skyrmions and topologically protected dissipative structureMay 04 2015Jan 05 2016The magnetic skyrmion with the topological number of unity ($Q=1$) is a well-known nanometric swirling spin structure in the nonlinear $\sigma$ model with the Dzyaloshinskii-Moriya interaction. Here, we show that magnetic skyrmion with the topological ... More
Seiberg Duality, Quiver Gauge Theories, and Ihara Zeta FunctionFeb 20 2015Mar 21 2015We study Ihara zeta function for graphs in the context of quivers arising from gauge theories, especially under Seiberg duality transformations. The distribution of poles is studied as we proceed along the duality tree, in light of the weak and strong ... More
Numerical Approximation of Stochastic Time-Fractional DiffusionOct 03 2018We develop and analyze a numerical method for stochastic time-fractional diffusion driven by additive fractionally integrated Gaussian noise. The model involves two nonlocal terms in time, i.e., a Caputo fractional derivative of order $\alpha\in(0,1)$, ... More
Cubic edge-transitive bi-$p$-metacirculantOct 24 2016A graph is said to be a bi-Cayley graph over a group H if it admits H as a group of automorphisms acting semiregularly on its vertices with two orbits. For a prime p, we call a bi-Cayley graph over a metacyclic p-group a bi-p-metacirculant. In this paper, ... More
Spin-Cherenkov effect in a magnetic nanostrip with interfacial Dzyaloshinskii-Moriya interactionJan 28 2016Apr 12 2016Spin-Cherenkov effect enables strong excitations of spin waves (SWs) with nonlinear wave dispersions. The Dzyaloshinskii-Moriya interaction (DMI) results in anisotropy and nonreciprocity of SWs propagation. In this work, we study the effect of the interfacial ... More
Pentavalent symmetric graphs of order twice a prime powerMar 31 2016A connected symmetric graph of prime valency is {\em basic} if its automorphism group contains no nontrivial normal subgroup having more than two orbits. Let $p$ be a prime and $n$ a positive integer. In this paper, we investigate properties of connected ... More
Stability of generalized Petersen graphsJul 19 2018The canonical double cover $D(\Gamma)$ of a graph $\Gamma$ is the direct product of $\Gamma$ and $K_2$. If $Aut(D(\Gamma))=Aut(\Gamma)\times\mathbb{Z}_2$ then $\Gamma$ is called stable; otherwise $\Gamma$ is called unstable. An unstable graph is called ... More
Modelling Sentence Pairs with Tree-structured Attentive EncoderOct 10 2016We describe an attentive encoder that combines tree-structured recursive neural networks and sequential recurrent neural networks for modelling sentence pairs. Since existing attentive models exert attention on the sequential structure, we propose a way ... More
Weakly Supervised Audio Source Separation via Spectrum Energy Preserved Wasserstein LearningNov 11 2017May 17 2018Separating audio mixtures into individual instrument tracks has been a long standing challenging task. We introduce a novel weakly supervised audio source separation approach based on deep adversarial learning. Specifically, our loss function adopts the ... More
Comparison among Klein-Gordon equation, Dirac equation and Relativistic Stationary Schrodinger equationJan 08 1999Feb 25 2000A particle is always not pure. It always contains hiding antiparticle ingredient which is the essence of special relativity. Accordingly, the Klein-Gordon (KG) equation and Dirac equation are restudied and compared with the Relativistic Stationary Schr\"odinger ... More
Maximal planar networks with large clustering coefficient and power-law degree distributionDec 16 2004In this article, we propose a simple rule that generates scale-free networks with very large clustering coefficient and very small average distance. These networks are called {\bf Random Apollonian Networks}(RAN) as they can be considered as a variation ... More
Skyrmion Tubes as Magnonic WaveguidesJan 02 2019Various latest experiments have proven the theoretical prediction that domain walls in planar magnetic structures can channel spin waves as outstanding magnonic waveguides, establishing a superb platform for building magnonic devices. Recently, three-dimensional ... More
Throughput and Robustness Guaranteed Beam Tracking for mmWave Wireless NetworksApr 13 2017Sep 12 2017With the increasing demand of ultra-high-speed wireless communications and the existing low frequency band (e.g., sub-6GHz) becomes more and more crowded, millimeter-wave (mmWave) with large spectra available is considered as the most promising frequency ... More
Determination of the intrinsic velocity field in the M87 jetApr 12 2009A new method to estimate the Doppler beaming factor of relativistic large-scale jet regions is presented. It is based on multiwaveband fitting to radio-to-X-ray continua with synchrotron spectrum models. Combining our method with available observational ... More
Cubic edge-transitive bi-Cayley graphs over inner-abelian p-groupsJan 04 2017A graph is said to be a bi-Cayley graph over a group H if it admits H as a group of automorphisms acting semiregularly on its vertices with two orbits. A non-abelian group is called an inner-abelian group if all of its proper subgroups are abelian. In ... More
Indifference Pricing and Hedging in a Multiple-Priors Model with Trading ConstraintsMar 31 2015This paper considers utility indifference valuation of derivatives under model uncertainty and trading constraints, where the utility is formulated as an additive stochastic differential utility of both intertemporal consumption and terminal wealth, and ... More
Boiling, steaming or rinsing? (physics of the Chinese cuisine)Jun 26 2018Some physical aspects of Chinese cuisine are discussed. We start from the cultural and historical particularities of the Chinese cuisine and technologies of food production. What is the difference between raw and boiled meat? What is the difference in ... More
Stability of circulant graphsFeb 14 2018Oct 17 2018The canonical double cover $\mathrm{D}(\Gamma)$ of a graph $\Gamma$ is the direct product of $\Gamma$ and $K_2$. If $\mathrm{Aut}(\mathrm{D}(\Gamma))=\mathrm{Aut}(\Gamma)\times\mathbb{Z}_2$ then $\Gamma$ is called stable; otherwise $\Gamma$ is called ... More
Why can an electron mass vary from zero to infinity?Aug 18 1998When a particle is in high speed or bound in the Coulomb potential of point nucleus, the variation of its mass can be ascribed to the variation of relative ratio of hiding antimatter to matter in the particle. At two limiting cases, the ratio approaches ... More
Some Contributions to Sequential Monte Carlo Methods for Option PricingAug 11 2016Pricing options is an important problem in financial engineering. In many scenarios of practical interest, financial option prices associated to an underlying asset reduces to computing an expectation w.r.t.~a diffusion process. In general, these expectations ... More
Magnetic bilayer-skyrmions without skyrmion Hall effectApr 09 2015Arising from emergent electromagnetic field of magnetic skyrmions due to their nontrivial topology, the skyrmion Hall effect might be a roadblock for practical applications since any longitudinal motions of skyrmions in nanotrack is accompanied by a transverse ... More
KLT-Like Behaviour of Inflationary Graviton CorrelatorsJun 16 2018Dec 15 2018We use the spinor helicity formalism to study KLT-like relations for the inflationary graviton four-point correlation function. New features are observed in this correlation function compared to the graviton scattering amplitude in flat spacetime. After ... More
Breaking Transferability of Adversarial Samples with RandomnessMay 11 2018Jun 17 2018We investigate the role of transferability of adversarial attacks in the observed vulnerabilities of Deep Neural Networks (DNNs). We demonstrate that introducing randomness to the DNN models is sufficient to defeat adversarial attacks, given that the ... More
K-energy on polarized compactifications of Lie groupsJan 02 2017In this paper, we study Mabuchi's K-energy on a compactification M of a reductive Lie group G, which is a complexification of its maximal compact subgroup K. We give a criterion for the properness of K-energy on the space of K \times K-invariant Kahler ... More
Quantifying the influence of scientists and their publications: Distinguish prestige from popularitySep 06 2011Oct 13 2011The number of citations is a widely used metric to evaluate the scientific credit of papers, scientists and journals. However, it does happen that a paper with fewer citations from prestigious scientists is of higher influence than papers with more citations. ... More
Observational Evidence of Accretion Disk-Caused Jet Precession in Galactic NucleiNov 08 2005We show that the observational data of extragalactic radio sources tend to support the theoretical relationship between the jet precession period and the optical luminosity of the sources, as predicted by the model in which an accretion disk causes the ... More
Improved thermal lattice Boltzmann model for simulation of liquid-vapor phase changeSep 13 2017Oct 30 2017In this paper, an improved thermal lattice Boltzmann (LB) model is proposed for simulating liquid-vapor phase change, which is aimed at improving an existing thermal LB model for liquid-vapor phase change [S. Gong and P. Cheng, Int. J. Heat Mass Transfer ... More
Convergence of $L^2$-norm based adaptive finite element method for elliptic optimal control problemsAug 31 2016Nov 15 2016This paper aims to study the convergence of adaptive finite element method for control constrained elliptic optimal control problems under $L^2$-norm. We prove the contraction property and quasi-optimal complexity for the $L^2$-norm errors of both the ... More
Thermally stable magnetic skyrmions in multilayer synthetic antiferromagnetic racetracksJan 15 2016Jul 22 2016A magnetic skyrmion is a topological magnetization structure with a nanometric size and a well-defined swirling spin distribution, which is anticipated to be an essential building block for novel skyrmion-based device applications. We study the motion ... More
Antiferromagnetic Skyrmion: Stability, Creation and ManipulationApr 06 2015Apr 04 2016Magnetic skyrmions are particle-like topological excitations in ferromagnets, which have the topological number $Q=\pm 1$, and hence show the skyrmion Hall effect (SkHE) due to the Magnus force effect originating from the topology. Here, we propose the ... More
Forward and Inverse Uncertainty Quantification using Multilevel Monte Carlo Algorithms for an Elliptic Nonlocal EquationMar 21 2016This paper considers uncertainty quantification for an elliptic nonlocal equation. In particular, it is assumed that the parameters which define the kernel in the nonlocal operator are uncertain and a priori distributed according to a probability measure. ... More
Klein paradox and antiparticleMay 13 1999The Klein paradox of Klein-Gordon (KG) equation is discussed to show that KG equation is self-consistent even at one-particle level and the wave function for antiparticle is uniquely determined by the reasonable explanation of Klein paradox. No concept ... More
The silicate model and carbon rich model of CoRoT-7b, Kepler-9d and Kepler-10bMay 30 2012May 31 2012Possible bulk compositions of the super-Earth exoplanets, CoRoT-7b, Kepler-9d, and Kepler-10b are investigated by applying a commonly used silicate and a non-standard carbon model. Their internal structures are deduced using the suitable equation of state ... More
Efficient routing on multilayered communication networksMay 02 2013We study the optimal routing on multilayered communication networks, which are composed of two layers of subnetworks. One is a wireless network, and the other is a wired network. We develop a simple recurrent algorithm to find an optimal routing on this ... More
Detection of $γ$-rays from the Protostellar Jet in the HH 80-81 SystemAug 29 2019Considering that the existence of relativistic particles in the protostellar jet has been confirmed by the detection of linearly polarized radio emission from the HH 80-81 jet, we search for $\gamma$-rays (which could be produced by the relativistic particles) ... More
Covert Communication in Fading Channels under Channel UncertaintyMar 07 2017A covert communication system under block fading channels is considered where users experience uncertainty about their channel knowledge. The transmitter seeks to hide the covert communication to a private user by exploiting a legitimate public communication ... More
Experimental analyses on 2-hop-based and 3-hop-based link prediction algorithmsAug 31 2019Link prediction is a significant and challenging task in network science. The majority of known methods are similarity-based, which assign similarity indices for node pairs and assume that two nodes of larger similarity have higher probability to be connected ... More
Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglementJan 23 2005Mar 18 2006We present a way for symmetric multiparty-controlled teleportation of an arbitrary two-particle entangled state based on Bell-basis measurements by using two Greenberger-Horne-Zeilinger states, i.e., a sender transmits an arbitrary two-particle entangled ... More
Graphitic C3N4 Sensitized TiO2 Nanotube Layers: A Visible Light Activated Efficient Antimicrobial PlatformOct 20 2016In this work, we introduce a facile procedure to graft a thin graphitic C3N4 (g-C3N4) layer on aligned TiO2 nanotube arrays (TiNT) by one-step chemical vapor deposition (CVD) approach. This provides a platform to enhance the visible-light response of ... More
Paving Spin-Wave Fibers in Magnonic Nanocircuits Using Spin-Orbit TorqueJan 14 2017Recent studies have revealed that domain walls in magnetic nanostructures can serve as compact, energy-efficient spin-wave waveguides for building magnonic devices that are considered promising candidates for overcoming the challenges and bottlenecks ... More
Domain wall-gated skyrmion logicApr 05 2016Skyrmions and domain walls are typical spin textures of significant technological relevance to magnetic memory and logic applications, where they are used as carriers of information. The unique topology of skyrmions makes them to display distinct dynamical ... More
Chiral Lagrangians with $Δ(1232)$ to one loopJul 31 2017Dec 14 2017We construct the Lorentz-invariant chiral Lagrangians up to the order $\mathcal{O}(p^4)$ by including $\Delta(1232)$ as an explicit degree of freedom. A full one-loop investigation on processes involving $\Delta(1232)$ can be performed with them. For ... More
Chiral Lagrangians for mesons with a single heavy quarkJan 28 2019Apr 17 2019We construct the relativistic chiral Lagrangians for heavy-light mesons $(Q\bar{q})$ to the $\mathcal{O}(p^4)$ order. From $\mathcal{O}(p^2)$ to $\mathcal{O}(p^4)$, there are 17, 67, and 404 independent terms in the flavor $SU(2)$ case and 20, 84, and ... More
Covert Wireless Communication with a Poisson Field of InterferersDec 19 2017Jun 19 2018In this paper, we study covert communication in wireless networks consisting of a transmitter, Alice, an intended receiver, Bob, a warden, Willie, and a Poisson field of interferers. Bob and Willie are subject to uncertain shot noise due to the ambient ... More
Non-Abelian Braiding of Chiral Majorana Fermions by Quantum DotsNov 08 2018The non-Abelian braiding of Majorana fermions is one of the most promising operations providing a key building block for the realization of topological quantum computation. Recently, the chiral Majorana fermions were observed in a hybrid junction btween ... More
Quantum transport through three-dimensional topological insulator p-n junction under magnetic fieldAug 23 2018The 3D topological insulator (TI) PN junction under magnetic fields presents a novel transport property which is investigated both theoretically and numerically in this paper. Transport in this device can be tuned by the axial magnetic field. Specifically, ... More
Impurity-limited quantum transport variability in magnetic tunnel junctionsDec 03 2016We report an extensive first-principles investigation of impurity-induced device-to-device variability of spin-polarized quantum tunneling through Fe/MgO/Fe magnetic tunnel junctions (MTJ). In particular, we calculated the tunnel magnetoresistance ratio ... More
A Multi-Index Markov Chain Monte Carlo MethodApr 01 2017Oct 27 2017In this article we consider computing expectations w.r.t.~probability laws associated to a certain class of stochastic systems. In order to achieve such a task, one must not only resort to numerical approximation of the expectation, but also to a biased ... More
Multilevel Sequential Monte Carlo with Dimension-Independent Likelihood-Informed ProposalsMar 15 2017In this article we develop a new sequential Monte Carlo (SMC) method for multilevel (ML) Monte Carlo estimation. In particular, the method can be used to estimate expectations with respect to a target probability distribution over an infinite-dimensional ... More
Multilevel Particle Filters: Normalizing Constant EstimationMay 16 2016In this article we introduce two new estimates of the normalizing constant (or marginal likelihood) for partially observed diffusion (POD) processes, with discrete observations. One estimate is biased but non-negative and the other is unbiased but not ... More
Self-optimal Piecewise Linearization Based Network Power Flow Constraints in Electrical Distribution System OptimizationSep 07 2018As a representative mathematical expression of power flow (PF) constraints in electrical distribution system (EDS), the piecewise linearization (PWL) based PF constraints have been widely used in different EDS optimization scenarios. However, the linearized ... More
Question Answering and Question Generation as Dual TasksJun 07 2017Aug 04 2017We study the problem of joint question answering (QA) and question generation (QG) in this paper. Our intuition is that QA and QG have intrinsic connections and these two tasks could improve each other. On one side, the QA model judges whether the generated ... More
Cosmological Applications of Pade ApproximantDec 04 2013Feb 04 2014As is well known, in mathematics, any function could be approximated by the Pad\'e approximant. The Pad\'e approximant is the best approximation of a function by a rational function of given order. In fact, the Pad\'e approximant often gives better approximation ... More
Multi-Channel Deep Networks for Block-Based Image Compressive SensingAug 28 2019Incorporating deep neural networks in image compressive sensing (CS) receives intensive attentions recently. As deep network approaches learn the inverse mapping directly from the CS measurements, a number of models have to be trained, each of which corresponds ... More
An Automatic Diagnosis Method of Facial Acne Vulgaris Based on Convolutional Neural NetworkNov 13 2017In this paper, we present a new automatic diagnosis method of facial acne vulgaris based on convolutional neural network. This method is proposed to overcome the shortcoming of classification types in previous methods. The core of our method is to extract ... More
Arc-transitive cyclic and dihedral covers of pentavalent symmetric graphs of order twice a primeMar 24 2017A regular cover of a connected graph is called {\em cyclic} or {\em dihedral} if its transformation group is cyclic or dihedral respectively, and {\em arc-transitive} (or {\em symmetric}) if the fibre-preserving automorphism subgroup acts arc-transitively ... More
Robust fermionic-mode entanglement of a nanoelectronic system in non-Markovian environmentsNov 04 2015A maximal steady-state fermionic entanglement of a nanoelectronic system is generated in finite temperature non-Markovian environments. The fermionic entanglement dynamics is presented by connecting the exact solution of the system with an appropriate ... More
Controllable selective coupling of Dyakonov surface wave at liquid crystal based interfaceJul 29 2019Highly directional and lossless surface wave has significant potential applications in the two-dimensional photonic circuits and devices. Here we experimentally demonstrate a selective Dyakonov surface wave coupling at the interface between a transparent ... More
Block-Conditional Missing at Random Models for Missing DataApr 13 2011Two major ideas in the analysis of missing data are (a) the EM algorithm [Dempster, Laird and Rubin, J. Roy. Statist. Soc. Ser. B 39 (1977) 1--38] for maximum likelihood (ML) estimation, and (b) the formulation of models for the joint distribution of ... More
Configuration-Sensitive Transport on Domain Walls of a Magnetic Topological InsulatorJul 31 2018We study the transport on the domain wall (DW) in a magnetic topological insulator. The low-energy behaviors of the magnetic topological insulator are dominated by the chiral edge states (CESs). Here, we find that the spectrum and transport of the CESs ... More
Lazy-CFR: fast and near optimal regret minimization for extensive games with imperfect informationOct 10 2018Dec 25 2018Counterfactual regret minimization (CFR) is the most popular algorithm on solving two-player zero-sum extensive games with imperfect information and achieves state-of-the-art performance in practice. However, the performance of CFR is not fully understood, ... More
Bayesian Static Parameter Estimation for Partially Observed Diffusions via Multilevel Monte CarloJan 20 2017In this article we consider static Bayesian parameter estimation for partially observed diffusions that are discretely observed. We work under the assumption that one must resort to discretizing the underlying diffusion process, for instance using the ... More
Weaving Multi-scale Context for Single Shot DetectorDec 08 2017Aggregating context information from multiple scales has been proved to be effective for improving accuracy of Single Shot Detectors (SSDs) on object detection. However, existing multi-scale context fusion techniques are computationally expensive, which ... More
Low Probability of Detection Communication: Opportunities and ChallengesJun 19 2019Jun 20 2019Low probability of detection (LPD) communication has recently emerged as a new transmission technology to address privacy and security in wireless networks. Recent studies have established the fundamental limits of LPD communication in terms of the amount ... More
Gaussian Signalling for Covert CommunicationsJul 02 2018May 09 2019In this work, we examine the optimality of Gaussian signalling for covert communications with an upper bound on $\mathcal{D}(p_{_1}||p_{_0})$ or $\mathcal{D}(p_{_0}||p_{_1})$ as the covertness constraint, where $\mathcal{D}(p_{_1}||p_{_0})$ and $\mathcal{D}(p_{_0}||p_{_1})$ ... More
Covert Communication in Wireless Relay NetworksApr 17 2017Covert communication aims to shield the very existence of wireless transmissions in order to guarantee a strong security in wireless networks. In this work, for the first time we examine the possibility and achievable performance of covert communication ... More
Scale-free networks without growthDec 20 2005In this letter, we proposed an ungrowing scale-free network model, wherein the total number of nodes is fixed and the evolution of network structure is driven by a rewiring process only. In spite of the idiographic form of $G$, by using a two-order master ... More
Image-to-Image Translation with Conditional Adversarial NetworksNov 21 2016Nov 26 2018We investigate conditional adversarial networks as a general-purpose solution to image-to-image translation problems. These networks not only learn the mapping from input image to output image, but also learn a loss function to train this mapping. This ... More
Current-Controlled Skyrmionic DiodeApr 05 2016In order to address many of the challenges and bottlenecks currently experienced by traditional charge based technologies, various alternatives are being actively explored to provide potential solutions of device miniaturization and scaling in the more-than-MOORE ... More
Lamellar Diblock Copolymers on Rough Substrates: Self-consistent Field Theory StudiesJun 23 2015Aug 18 2015We present numerical calculations of lamellar phases of di-block copolymers (BCP) confined between two surfaces, where the top surface is flat and the bottom one is corrugated. The corrugated substrate is assumed to have a single $q$-mode of lateral undulations ... More
DeepHTTP: Semantics-Structure Model with Attention for Anomalous HTTP Traffic Detection and Pattern MiningOct 30 2018In the Internet age, cyber-attacks occur frequently with complex types. Traffic generated by access activities can record website status and user request information, which brings a great opportunity for network attack detection. Among diverse network ... More
Fidelity mechanics: analogues of the four thermodynamic laws and Landauer's principleSep 28 2017Fidelity mechanics is formalized as a framework to investigate quantum critical phenomena in quantum many-body systems. This is achieved by introducing fidelity temperature to properly quantify quantum fluctuations, which, together with fidelity entropy ... More
Cubic vertex-transitive non-Cayley graphs of order 12pMay 12 2017A graph is said to be {\em vertex-transitive non-Cayley} if its full automorphism group acts transitively on its vertices and contains no subgroups acting regularly on its vertices. In this paper, a complete classification of cubic vertex-transitive non-Cayley ... More
Pentavalent symmetric graphs admitting vertex-transitive non-abelian simple groupsJan 05 2017A graph \Gamma is said to be {\em symmetric} if its automorphism group \Aut(\Gamma) is transitive on the arc set of \Gamma. Let $G$ be a finite non-abelian simple group and let \Gamma be a connected pentavalent symmetric graph such that G\leq \Aut(\Gamma). ... More
Impact of Plasma Instability on Constraint of the Intergalactic Magnetic FieldOct 16 2018Nov 06 2018A relativistic electron-positron pair beam can be produced in the interaction of TeV photons from a blazar with the extragalactic background light (EBL). The relativistic $e^{\pm}$ pairs would loss energy through inverse-Compton scattering (ICS) photons ... More
Glauber Gluon Effects in Soft Collinear FactorizationAug 05 2017Effects of Glauber gluons in soft collinear factorization, which cause the elastic scattering process between collinear particles, are studied in the frame of soft-collinear effective theory(SCET). Glauber modes are added into the Lagrangian before integrated ... More
The Continuity of the Gauge Fixing Condition $n\cdot\partial n\cdot A=0$ for $SU(2)$ Gauge TheoryJan 14 2017Jan 19 2017The continuity of the gauge fixing condition $n\cdot\partial n\cdot A=0$ for $SU(2)$ gauge theory on the manifold $R\bigotimes S^{1}\bigotimes S^{1}\bigotimes S^{1}$ is studied here, where $n^{\mu}$ stands for directional vector along $x_{i}$-axis($i=1,2,3$). ... More
Quantization of Yang-Mills Theories without the Gribov AmbiguityNov 14 2016Jan 19 2017A gauge condition is presented here to quantize non-Abelian gauge theory on the manifold $R\otimes S^{1}\otimes S^{1}\otimes S^{1}$, which is free from the Gribov ambiguity. Perturbative calculations in the new gauge behave like the axial gauge in ultraviolet ... More