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Multivariate statistical modelling of future marine stormsMar 13 2019Extreme events, such as wave-storms, need to be characterized for coastal infrastructure design purposes. Such description should contain information on both the univariate behaviour and the joint-dependence of storm-variables. These two aspects have ... More

The Double-Time Green's Function Approach to the Two-Dimensional Heisenberg Antiferromagnet with Broken BondsMay 13 1998We improved the decoupling approximation of the double-time Green's function theory, and applied it to study the spin-${1\over 2}$ two-dimensional antiferromagnetic Heisenberg model with broken bonds at finite temperature. Our decoupling approximation ... More

Achieving accurate ionization potential of semiconductors by the efficient Kohn-Sham scheme of density functional theoryMar 04 2016Apr 06 2016Despite of its huge successes in vast amount of applications, the Kohn-Sham scheme of density functional theory (DFT-Kohn-Sham) has not been able to get reliable ionization potentials (IP) for semiconductors, due to self-interaction error in the local ... More

A simple finite element method for the Stokes equationsOct 17 2016The goal of this paper is to introduce a simple finite element method to solve the Stokes and the Navier-Stokes equations. This method is in primal velocity-pressure formulation and is so simple such that both velocity and pressure are approximated by ... More

The jumping phenomenon of the dimensions of Bott-Chern cohomology groups and Aeppli cohomology groupsMar 03 2014Mar 06 2014Let $X$ be a compact complex manifold, and let $\pi: \mathcal{X} \rightarrow B$ be a small deformation of $X$, the dimensions of the Bott-Chern cohomology groups $H_{\rm BC}^{p,q}(X(t))$ and Aeppli cohomology groups $H_{\rm A}^{p,q}(X(t))$ may vary under ... More

f-Biharmonic maps and f-biharmonic submanifolds IIApr 30 2016We continue our study [Ou4] of f-biharmonic maps and f-biharmonic submanifolds by exploring the applications of f-biharmonic maps and the relationships among biharmonicity, f-biharmonicity and conformality of maps between Riemannian manifolds. We are ... More

On f-biharmonic maps and f-biharmonic submanifoldsJun 15 2013f-Biharmonic maps are the extrema of the f-bienergy functional. f-biharmonic submanifolds are submanifolds whose defining isometric immersions are f-biharmonic maps. In this paper, we prove that an f-biharmonic map from a compact Riemannian manifold into ... More

On f-harmonic morphisms between Riemannian manifoldsMar 29 2011f-Harmonic maps were first introduced and studied by Lichnerowicz in \cite{Li} (see also Section 10.20 in Eells-Lemaire's report \cite{EL}). In this paper, we study a subclass of f-harmonic maps called f-harmonic morphisms which pull back local harmonic ... More

Quadratic harmonic morphisms and O-systemsNov 03 1995We introduce O-systems (Definition \ref{DO}) of orthogonal transformations of ${\Bbb R}^{m}$, and establish $1-1$ correspondences both between equivalence classes of Clifford systems and that of O-systems, and between O-systems and orthogonal multiplications ... More

Biharmonic conformal immersions into 3-dimensional manifoldsSep 10 2012Motivated by the beautiful theory and the rich applications of harmonic conformal immersions and conformal immersions of constant mean curvature (CMC) surfaces, we study biharmonic conformal immersions of surfaces into a generic 3-manifold. We first derive ... More

Biharmonic hypersurfaces in Riemannian manifoldsJan 12 2009Dec 09 2009We study biharmonic hypersurfaces in a generic Riemannian manifold. We first derive an invariant equation for such hypersurfaces generalizing the biharmonic hypersurface equation in space forms studied in \cite{Ji2}, \cite{CH}, \cite{CMO1}, \cite{CMO2}. ... More

On conformal biharmonic immersionsAug 17 2008This paper studies conformal biharmonic immersions. We first study the transformations of Jacobi operator and the bitension field under conformal change of metrics. We then obtain an invariant equation for a conformal biharmonic immersion of a surface ... More

Some recent progress of biharmonic submanifoldsNov 29 2015In this note, we give a brief survey on some recent developments of biharmonic submanifolds. After reviewing some recent progress on Chen's biharmonic conjecture, the Generalized Chen's conjecture on biharmonic submanifolds of non-positively curved manifolds, ... More

Some constructions of biharmonic maps and Chen's conjecture on biharmonic hypersurfacesDec 06 2009Aug 13 2018We give several construction methods and use them to produce many examples of proper biharmonic maps including biharmonic tori of any dimension in Euclidean spheres (Theorem 2.2, Corollaries 2.3, 2.4, and 2.6), biharmonic maps between spheres (Theorem ... More

Complete lifts of harmonic maps and morphisms between Euclidean spacesNov 07 1995We introduce the complete lifts of maps between (real and complex) Euclidean spaces and study their properties concerning holomorphicity, harmonicity and horizontal weakly conformality. As applications, we are able to use this concept to characterize ... More

Some classifications of biharmonic hypersurfaces with constant scalar curvatureAug 28 2017We give some classifications of biharmonic hypersurfaces with constant scalar curvature. These include biharmonic Einstein hypersurfaces in space forms, compact biharmonic hypersurfaces with constant scalar curvature in a sphere, and some complete biharmonic ... More

Biharmonic maps in two dimensionsAug 04 2010Biharmonic maps between surfaces are studied in this paper. We compute the bitension field of a map between surfaces with conformal metrics in complex coordinates. As applications, we show that a linear map from Euclidean plane into $(\mathbb{R}^2, \sigma^2dwd\bar ... More

On the generalized Chen's conjecture on biharmonic submanifoldsJun 09 2010May 02 2014The generalized Chen's conjecture on biharmonic submanifolds asserts that any biharmonic submanifold of a non-positively curved manifold is minimal (see e.g., [CMO1], [MO], [BMO1], [BMO2], [BMO3], [Ba1], [Ba2], [Ou1], [Ou2], [IIU]). In this paper, we ... More

Horizontally homothetic submersions and nonnegative curvatureFeb 01 2006Feb 07 2006We show that any horizontally homothetic submersion from a compact manifold of nonnegative sectional curvature is a Riemannian submersion.

Some remarks on bi-f-harmonic maps and f-biharmonic mapsAug 07 2018In this paper, we prove that the class of bi-f-harmonic maps and that of f-biharmonic maps from a conformal manifold of dimension not equal to 2 are the same (Theorem 1.1). We also give several results on nonexistence of proper bi-f-harmonic maps and ... More

Generalized harmonic morphisms and horizontally weakly conformal biharmonic mapsDec 10 2017Harmonic morphisms are maps between Riemannian manifolds that pull back harmonic functions to harmonic functions. These maps are characterized as horizontally weakly conformal harmonic maps and they have many interesting links and applications to several ... More

Biharmonic conformal maps in dimension four and equations of Yamabe-typeJul 11 2017We prove that the problem of constructing biharmonic conformal maps on a $4$-dimensional Einstein manifold reduces to a Yamabe-type equation. This allows us to construct an infinite family of examples on the Euclidean 4-sphere. In addition, we characterize ... More

Biharmonic hypersurfaces in a conformally flat spaceApr 25 2012Biharmonic hypersurfaces in a generic conformally flat space are studied in this paper. The equation of such hypersurfaces is derived and is used to determine the conformally flat metric $f^{-2}\delta_{ij}$ on the Euclidean space $\mathbb{R}^{m+1}$ so ... More

Gravitational Lensing Analyzed by Graded Refractive Index of VacuumNov 05 2007Feb 13 2008We found strong similarities between the gravitational lensing and the conventional optical lensing. The similarities imply a graded refractive index description of the light deflection in gravitational field. We got a general approach to this refractive ... More

The Deviation of the Vacuum Refractive Index Induced by a Static Gravitational FieldApr 10 2007We analyzed the influence of static gravitational field on the vacuum and proposed the concept of inhomogeneous vacuum. According to the observational result of the light deflection in solar gravitational field as well as the corresponding Fermat's principle ... More

Biharmonic submanifolds of pseudo-Riemannian manifoldsDec 08 2015In this paper, we derived biharmonic equations for pseudo-Riemannian submanifolds of pseudo-Riemannian manifolds which includes the biharmonic equations for submanifolds of Riemannian manifolds as a special case. As applications, we proved that a pseudo-umbilical ... More

Classification of Indecomposable Flows of Signed GraphsDec 03 2011Jun 09 2013An indecomposable flow $f$ on a signed graph $\Sigma$ is a nontrivial integral flow that cannot be decomposed into $f=f_1+f_2$, where $f_1,f_2$ are nontrivial integral flows having the same sign (both $\geq 0$ or both $\leq 0$) at each edge of $\Sigma$. ... More

The Auslander-Reiten formula for complexes of modulesDec 04 2004Dec 29 2004An Auslander-Reiten formula for complexes of modules is presented. This formula contains as a special case the classical Auslander Reiten formula. The Auslander-Reiten translate of a complex is described explicitly, and various applications are discussed. ... More

The Auslander-Reiten duality via morphisms determined by objectsDec 08 2016Mar 08 2018Given an exact category $\mathcal{C}$, we denote by $\mathcal{C}_l$ the smallest additive subcategory containing injectives and indecomposable objects which appear as the first term of an almost split conflation. We prove that a deflation is right determined ... More

A Hybridized Formulation for the Weak Galerkin Mixed Finite Element MethodAug 24 2015This paper presents a hybridized formulation for the weak Galerkin mixed finite element method (WG-MFEM) which was introduced and analyzed for second order elliptic equations. The WG-MFEM method was designed by using discontinuous piecewise polynomials ... More

Graded elementary quasi-Hopf algebras of tame representation typeJan 27 2014The class of graded elementary quasi-Hopf algebras of tame type is classified. Combining with our previous work [19], this completes the trichotomy for such class of algebras according to their representation types. In addition, new examples of genuine ... More

Commutative Hopf structures over a loopFeb 02 2010Let $k$ be an algebraically closed field of characteristic $p>0$. For a loop $\circlearrowleft$, denote its path coalgebra by $k\circlearrowleft$. In this paper, all the finite-dimensional commutative Hopf algebras over the sub coalgebras of $k\circlearrowleft$ ... More

On the Benefits of Sampling in Privacy Preserving Statistical Analysis on Distributed DatabasesApr 16 2013We consider a problem where mutually untrusting curators possess portions of a vertically partitioned database containing information about a set of individuals. The goal is to enable an authorized party to obtain aggregate (statistical) information from ... More

Effects of blockage, arrangement and channel dynamics on performance of turbines in a tidal arrayNov 01 2017Jan 06 2018The performance and economics of turbines in a tidal array are largely dependent on the power per turbine, and so approaches that can increase this power are crucial for the development of tidal energy. In this paper, we combine a two-scale partial array ... More

Biharmonic Riemannian submersionsMay 12 2018In this paper, we study biharmonic Riemannian submersions. We first derive bitension field of a general Riemannian submersion, we then use it to obtain biharmonic equations for Riemannian submersions with $1$-dimensional fibers and Riemannian submersions ... More

Explicit cocycle formulas on finite abelian groups with applications to braided linear Gr-categories and Dijkgraaf-Witten invariantsMar 09 2017Mar 22 2018We provide explicit and unified formulas for the cocycles of all degrees on the normalized bar resolutions of finite abelian groups. This is achieved by constructing a chain map from the normalized bar resolution to a Koszul-like resolution for any given ... More

The braided monoidal structures on a class of linear Gr-categoriesJun 23 2012May 16 2014A linear Gr-category is a category of finite-dimensional vector spaces graded by a finite group together with natural tensor product. We classify the braided monoidal structures of a class of linear Gr-categories via explicit computations of the 3-cocycles ... More

Biharmonic Riemannian submersions from 3-manifoldsFeb 24 2010An important theorem about biharmonic submanifolds proved independently by Chen-Ishikawa [CI] and Jiang [Ji] states that an isometric immersion of a surface into 3-dimensional Euclidean space is biharmonic if and only if it is harmonic (i.e, minimal). ... More

Constant mean curvature and totally umbilical biharmonic surfaces in 3-dimensional geometriesJan 17 2011We prove that a totally umbilical biharmonic surface in any $3$-dimensional Riemannian manifold has constant mean curvature. We use this to show that a totally umbilical surface in Thurston's 3-dimensional geometries is proper biharmonic if and only if ... More

Infinity-harmonic maps and morphismsOct 06 2008Jan 15 2011We propose a new notion called \emph{infinity-harmonic maps}between Riemannain manifolds. These are natural generalizations of the well known notion of infinity harmonic functions and are also the limiting case of $p$% -harmonic maps as $p\to \infty $. ... More

Hopf Structures on Minimal Hopf QuiversSep 09 2009In this paper we investigate pointed Hopf algebras via quiver methods. We classify all possible Hopf structures arising from minimal Hopf quivers, namely basic cycles and the linear chain. This provides full local structure information for general pointed ... More

Quivers, Quasi-Quantum Groups and Finite Tensor CategoriesJun 18 2009We study finite quasi-quantum groups in their quiver setting developed recently by the first author in arXiv:0902.1620 and arXiv:0903.1472. We obtain a classification of finite-dimensional pointed Majid algebras of finite corepresentation type, or equivalently ... More

On the classification of quadratic harmonic morphisms between Euclidean spacesNov 03 1995We give a classification of quadratic harmonic morphisms between Euclidean spaces (Theorem 2.4) after proving a Rank Lemma. We also find a correspondence between umbilical (Definition 2.7) quadratic harmonic morphisms and Clifford systems. In the case ... More

A Stable Numerical Algorithm for the Brinkman Equations by Weak Galerkin Finite Element MethodsDec 08 2013This paper presents a stable numerical algorithm for the Brinkman equations by using weak Galerkin (WG) finite element methods. The Brinkman equations can be viewed mathematically as a combination of the Stokes and Darcy equations which model fluid flow ... More

Some classifications of \infty-Harmonic maps between Riemannian manifoldsOct 30 2007$\infty$-Harmonic maps are a generalization of $\infty$-harmonic functions. They can be viewed as the limiting cases of p-harmonic maps as p goes to infinity. In this paper, we give complete classifications of linear and quadratic $\infty$-harmonic maps ... More

On Braided Linear Gr-categoriesOct 06 2013May 16 2014We provide explicit and unified formulae for the normalized 3-cocycles on arbitrary finite abelian groups. As an application, we compute all the braided monoidal structures on linear Gr-categories.

Active Object Perceiver: Recognition-guided Policy Learning for Object Searching on Mobile RobotsJul 30 2018We study the problem of learning a navigation policy for a robot to actively search for an object of interest in an indoor environment solely from its visual inputs. While scene-driven visual navigation has been widely studied, prior efforts on learning ... More

Monomial Hopf AlgebrasAug 04 2003Dec 28 2004Let $K$ be a field of characteristic 0 containing all roots of unity. We classify all the Hopf structures on monomial $K$-coalgebras, or, in dual version, on monomial $K$-algebras.

A C^0-Weak Galerkin Finite Element Method for the Biharmonic EquationDec 02 2012A C^0-weak Galerkin (WG) method is introduced and analyzed for solving the biharmonic equation in 2D and 3D. A weak Laplacian is defined for C^0 functions in the new weak formulation. This WG finite element formulation is symmetric, positive definite ... More

Nonconvex One-bit Single-label Multi-label LearningMar 17 2017We study an extreme scenario in multi-label learning where each training instance is endowed with a single one-bit label out of multiple labels. We formulate this problem as a non-trivial special case of one-bit rank-one matrix sensing and develop an ... More

Interior penalty discontinuous Galerkin method on very general polygonal and polyhedral meshesOct 15 2012This paper focuses on interior penalty discontinuous Galerkin methods for second order elliptic equations on very general polygonal or polyhedral meshes. The mesh can be composed of any polygons or polyhedra which satisfies certain shape regularity conditions ... More

Finite quasi-quantum groups of diagonal typeNov 13 2016Dec 20 2016The goal of the present paper is to classify an interesting class of elementary quasi-Hopf algebras, or equivalently, finite-dimensional pointed Majid algebras. By a Tannaka-Krein type duality, this determines a big class of pointed finite tensor categories. ... More

An ADMM-Based Interior-Point Method for Large-Scale Linear ProgrammingMay 31 2018We propose a new framework to implement interior point method (IPM) to solve very large linear programs (LP). Traditional IPMs typically use Newton's method to approximately solve a subproblem that aims to minimize a log-barrier penalty function at each ... More

Band structure reconstruction across nematic order in high quality FeSe single crystal as revealed by optical spectroscopy studyJun 07 2016We perform an in-plane optical spectroscopy measurement on high quality FeSe single crystals grown by a vapor transport technique. Below the structural transition at $T_{\rm s}\sim$90 K, the reflectivity spectrum clearly shows a gradual suppression around ... More

Biharmonic and f-biharmonic maps from a 2-sphereJan 14 2015We study biharmonic maps and f-biharmonic maps from a round sphere $(S^2, g_0)$, the latter maps are equivalent to biharmonic maps from Riemann spheres $(S^2, f^{-1}g_0)$. We proved that for rotationally symmetric maps between rotationally symmetric spaces, ... More

The Second Order Linear ModelMar 02 2017Jun 23 2017We study a fundamental class of regression models called the second order linear model (SLM). The SLM extends the linear model to high order functional space and has attracted considerable research interest recently. Yet how to efficiently learn the SLM ... More

Performance of two-dimensional tidal turbine arrays in free surface flowNov 02 2017Encouraged by recent studies on the performance of tidal turbine arrays, we extend the classical momentum actuator disc theory to include the free surface effects and allow the vertical arrangement of turbines. Most existing literatures concern one dimensional ... More

A Numerical Study on the Weak Galerkin Method for the Helmholtz Equation with Large Wave NumbersNov 02 2011Weak Galerkin (WG) refers to general finite element methods for partial differential equations in which differential operators are approximated by weak forms through the usual integration by parts. In particular, WG methods allow the use of discontinuous ... More

Strong decays of the 1P and 2D doubly charmed statesDec 20 2017We perform a systematical investigation of the strong decay properties of the low-lying $1P$- and $2D$-wave doubly charmed baryons with the $^3P_0$ quark pair creation model. The main predictions include: (i) in the $\Xi_{cc}$ and $\Omega_{cc}$ family, ... More

Examining effect of architectural adjustment on pedestrian crowd flow at bottleneckAug 22 2018Recent advances in bottleneck studies have highlighted that different architectural adjustments at the exit may reduce the probability of clogging at the exit thereby enhancing the outflow of the individuals. However, those studies are mostly limited ... More

A linear time algorithm for the next-to-shortest path problem on undirected graphs with nonnegative edge lengthsMar 23 2012For two vertices $s$ and $t$ in a graph $G=(V,E)$, the next-to-shortest path is an $st$-path which length is minimum amongst all $st$-paths strictly longer than the shortest path length. In this paper we show that, when the graph is undirected and all ... More

A Numerical Study on the Weak Galerkin Method for the Helmholtz EquationOct 22 2013A weak Galerkin (WG) method is introduced and numerically tested for the Helmholtz equation. This method is flexible by using discontinuous piecewise polynomials and retains the mass conservation property. At the same time, the WG finite element formulation ... More

Weak Galerkin Methods for Second Order Elliptic Interface ProblemsJan 31 2012Feb 01 2012Weak Galerkin methods refer to general finite element methods for PDEs in which differential operators are approximated by their weak forms as distributions. Such weak forms give rise to desirable flexibilities in enforcing boundary and interface conditions. ... More

A Weak Galerkin Finite Element Method for the Maxwell EquationsDec 09 2013This paper introduces a numerical scheme for time harmonic Maxwell's equations by using weak Galerkin (WG) finite element methods. The WG finite element method is based on two operators: discrete weak curl and discrete weak gradient, with appropriately ... More

Biharmonic maps from a 2-sphereOct 02 2013Dec 10 2013Motivated by the rich theory of harmonic maps from a 2-sphere, we study biharmonic maps from a 2-sphere in this paper. We first derive biharmonic equation for rotationally symmetric maps between rotationally symmetric 2-manifolds. We then apply the equation ... More

Biharmonic maps from tori into a 2-sphereJun 18 2014Biharmonic maps are generalizations of harmonic maps. A well-known result of Eells and Wood on harmonic maps between surfaces shows that there exists no harmonic map from a torus into a sphere (whatever the metrics chosen) in the homotopy class of maps ... More

Rethinking the Smaller-Norm-Less-Informative Assumption in Channel Pruning of Convolution LayersFeb 01 2018Feb 02 2018Model pruning has become a useful technique that improves the computational efficiency of deep learning, making it possible to deploy solutions in resource-limited scenarios. A widely-used practice in relevant work assumes that a smaller-norm parameter ... More

Finite quasi-quantum groups of rank twoAug 18 2015This is a contribution to the structure theory of finite pointed quasi-quantum groups. We classify all finite-dimensional connected graded pointed Majid algebras of rank two which are not twist equivalent to ordinary pointed Hopf algebras.

Lower branch coherent states in shear flows: transition and controlMar 07 2007Lower branch coherent states in plane Couette flow have an asymptotic structure that consists of O(1) streaks, $O(R^{-1})$ streamwise rolls and a weak sinusoidal wave that develops a critical layer, for large Reynolds number $R$. Higher harmonics become ... More

Three body open flavor decays of higher charmonium and bottomoniumNov 22 2018Feb 26 2019In the present work, we study the OZI-allowed three body open flavor decay properties of higher vector charmonium and bottomonium states with an extended quark pair creation model. For the bottomonium system, we get that (i) the $BB\pi$ and $B^*B^*\pi$ ... More

The Impact of Confounder Selection in Propensity Scores for Rare Events Data - with Applications to Birth DefectsFeb 22 2017Our work was motivated by a recent study on birth defects of infants born to pregnant women exposed to a certain medication for treating chronic diseases. Outcomes such as birth defects are rare events in the general population, which often translate ... More

Physical Folding Codes for ProteinsJan 04 2019Exploring and understanding the protein-folding problem has been a long-standing challenge in molecular biology. Here, using molecular dynamics simulation, we reveal how parallel distributed adjacent planar peptide groups of unfolded proteins fold reproducibly ... More

Improving the Survivability of Clustered Interdependent Networks by Restructuring DependenciesMar 04 2019The interdependency between different network layers is commonly observed in Cyber Physical Systems and communication networks adopting the dissociation of logic and hardware implementation, such as Software Defined Networking and Network Function Virtualization. ... More

Third order Maximum-Principle-Satisfying Direct discontinuous Galerkin methods for time dependent convection diffusion equations on unstructured triangle meshAug 18 2015We develop 3rd order maximum-principle-satisfying direct discontinuous Galerkin methods [8, 9, 19, 21] for convection diffusion equations on unstructured triangular mesh. We carefully calculate the normal derivative numerical flux across element edges ... More

Fine-Gray competing risks model with high-dimensional covariates: estimation and InferenceJul 29 2017The purpose of this paper is to construct confidence intervals for the regression coefficients in the Fine-Gray model for competing risks data with random censoring, where the number of covariates can be larger than the sample size. Despite strong motivation ... More

Learning from Large-scale Noisy Web Data with Ubiquitous Reweighting for Image ClassificationNov 02 2018Many advances of deep learning techniques originate from the efforts of addressing the image classification task on large-scale datasets. However, the construction of such clean datasets is costly and time-consuming since the Internet is overwhelmed by ... More

The environment of barred galaxies in the low-redshift UniverseMay 27 2014Nov 06 2014We present a study of the environment of barred galaxies using a volume-limited sample of over 30,000 galaxies drawn from the Sloan Digital Sky Survey. We use four different statistics to quantify the environment: the projected two-point cross-correlation ... More

Defect-engineered graphene for bulk supercapacitors with high energy and power densitiesJan 20 2016The development of high-energy and high-power density supercapacitors (SCs) is critical for enabling next-generation energy storage applications. Nanocarbons are excellent SC electrode materials due to their economic viability, high-surface area, and ... More

ADMM-NN: An Algorithm-Hardware Co-Design Framework of DNNs Using Alternating Direction Method of MultipliersDec 31 2018To facilitate efficient embedded and hardware implementations of deep neural networks (DNNs), two important categories of DNN model compression techniques: weight pruning and weight quantization are investigated. The former leverages the redundancy in ... More

Stochastic Coordinate Coding and Its Application for Drosophila Gene Expression Pattern AnnotationJul 30 2014Dec 09 2014\textit{Drosophila melanogaster} has been established as a model organism for investigating the fundamental principles of developmental gene interactions. The gene expression patterns of \textit{Drosophila melanogaster} can be documented as digital images, ... More

A structural modeling approach to the solid-solution materialsOct 15 2018Alloying is one of the most important ways to improve the structural and functional properties of materials. It may result in a single solid-solution phase or a mixture of multiple phases. In this work we propose a solid-solution modeling approach via ... More

BPDS: A Blockchain based Privacy-Preserving Data Sharing for Electronic Medical RecordsNov 08 2018Electronic medical record (EMR) is a crucial form of healthcare data, currently drawing a lot of attention. Sharing health data is considered to be a critical approach to improve the quality of healthcare service and reduce medical costs. However, EMRs ... More

Exploration of nonlocalities in ensembles consisting of bipartite quantum statesJan 12 2009Aug 31 2010It is revealed that ensembles consisting of multipartite quantum states can exhibit different kinds of nonlocalities. An operational measure is introduced to quantify nonlocalities in ensembles consisting of bipartite quantum states. Various upper and ... More

Phase Transformations in Binary Colloidal MonolayersFeb 10 2015Phase transformations can be difficult to characterize at the microscopic level due to the inability to directly observe individual atomic motions. Model colloidal systems, by contrast, permit the direct observation of individual particle dynamics and ... More

Resolved atomic interaction sidebands in an optical clock transitionFeb 04 2011Apr 05 2011We report the observation of resolved atomic interaction sidebands (ISB) in the ${}^{87}$Sr optical clock transition when atoms at microkelvin temperatures are confined in a two-dimensional (2D) optical lattice. The ISB are a manifestation of the strong ... More

Strong and radiative decays of the doubly charmed baryonsAug 15 2017Aug 26 2017We have systematically studied the strong and radiative decays of the low-lying $1P$-wave doubly charmed baryons. Some interesting observations are: (i) The states $\Xi_{cc}^*$ and $\Omega_{cc}^*$ with $J^P=3/2^+$ have a fairly large decay rate into the ... More

A new decay mode of higher charmoniumMay 18 2018We calculate the $\Lambda_c\bar{\Lambda}_c$ partial decay width of the excited vector charmonium states around 4.6 GeV with the quark pair creation model. We find that the partial decay width of the $\Lambda_c\bar{\Lambda}_c$ mode can reach up to several ... More

Vulnerability Prediction Based on Weighted Software Network for Secure Software BuildingFeb 13 2019To build a secure communications software, Vulnerability Prediction Models (VPMs) are used to predict vulnerable software modules in the software system before software security testing. At present many software security metrics have been proposed to ... More

Learning Warped Guidance for Blind Face RestorationApr 13 2018Apr 16 2018This paper studies the problem of blind face restoration from an unconstrained blurry, noisy, low-resolution, or compressed image (i.e., degraded observation). For better recovery of fine facial details, we modify the problem setting by taking both the ... More

FairMod - Making Predictive Models Discrimination AwareNov 05 2018Predictive models such as decision trees and neural networks may produce discrimination in their predictions. This paper proposes a method to post-process the predictions of a predictive model to make the processed predictions non-discriminatory. The ... More

An exploration of algorithmic discrimination in data and classificationNov 06 2018Algorithmic discrimination is an important aspect when data is used for predictive purposes. This paper analyzes the relationships between discrimination and classification, data set partitioning, and decision models, as well as correlation. The paper ... More

GAPLE: Generalizable Approaching Policy LEarning for Robotic Object Searching in Indoor EnvironmentSep 21 2018Mar 07 2019We study the problem of learning a generalizable action policy for an intelligent agent to actively approach an object of interest in an indoor environment solely from its visual inputs. While scene-driven or recognition-driven visual navigation has been ... More

Combining Predictions of Auto Insurance ClaimsAug 27 2018This paper aims at achieving better performance of prediction by combining candidate predictions, with the focus on the highly-skewed auto insurance claim cost data. We analyze a version of the Kangaroo Auto Insurance company data, and incorporate different ... More

Near-Optimal Time and Sample Complexities for Solving Discounted Markov Decision Process with a Generative ModelJun 05 2018Nov 13 2018In this paper we consider the problem of computing an $\epsilon$-optimal policy of a discounted Markov Decision Process (DMDP) provided we can only access its transition function through a generative sampling model that given any state-action pair samples ... More

Which Factorization Machine Modeling is Better: A Theoretical Answer with Optimal GuaranteeJan 30 2019Factorization machine (FM) is a popular machine learning model to capture the second order feature interactions. The optimal learning guarantee of FM and its generalized version is not yet developed. For a rank $k$ generalized FM of $d$ dimensional input, ... More

Automatic Modulation Recognition of PSK Signals with Sub-Nyquist Sampling Based on High Order StatisticsDec 31 2014Sampling rate required in the Nth Power Nonlinear Transformation (NPT) method is typically much greater than Nyquist rate, which causes heavy burden for the Analog to Digital Converter (ADC). Taking advantage of the sparse property of PSK signals' spectrum ... More

Automatic Modulation Recognition of PSK Signals Using Nonuniform Compressive Samples Based on High Order StatisticsDec 31 2014Phase modulation is a commonly used modulation mode in digital communication, which usually brings phase sparsity to digital signals. It is naturally to connect the sparsity with the newly emerged theory of compressed sensing (CS), which enables sub-Nyquist ... More

A Novel Compressed Sensing Based Model for Reconstructing Sparse Signals Using Phase Sparse CharacterDec 31 2014Phase modulation is a commonly used modulation mode in digital communication, which usually brings phase sparsity to digital signals. It is naturally to connect the sparsity with the newly emerged theory of compressed sensing (CS), which enables sub-Nyquist ... More

Hierarchical Neural Network Architecture In Keyword SpottingNov 06 2018Keyword Spotting (KWS) provides the start signal of ASR problem, and thus it is essential to ensure a high recall rate. However, its real-time property requires low computation complexity. This contradiction inspires people to find a suitable model which ... More

An Optimal Fully Distributed Algorithm to Minimize the Resource Consumption of Cloud ApplicationsJun 27 2012According to the pay-per-use model adopted in clouds, the more the resources consumed by an application running in a cloud computing environment, the greater the amount of money the owner of the corresponding application will be charged. Therefore, applying ... More