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Results for "Yun Chen"

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Moduli Interpretations for Noncongruence Modular CurvesOct 19 2015Sep 07 2017We define the notion of a $G$-structure for elliptic curves, where $G$ is a finite 2-generated group. When $G$ is abelian, a $G$-structure is the same as a classical congruence level structure. There is a natural action of $\text{SL}_2(\mathbb{Z})$ on ... More
Diffusion $K$-means clustering on manifolds: provable exact recovery via semidefinite relaxationsMar 11 2019We introduce the {\it diffusion $K$-means} clustering method on Riemannian submanifolds, which maximizes the within-cluster connectedness based on the diffusion distance. The diffusion $K$-means constructs a random walk on the similarity graph with vertices ... More
The production of neutral $N^*(11052)$ resonance with hidden beauty from $π^-p$ scatteringDec 28 2016We investigate the discovery potential of the predicted neutral hidden beauty $N^*(11052)$ resonance through $\pi^- p$ scattering within an effective Lagrangian approach. Two reactions $\pi^-p\rightarrow K^-\Sigma^+$ and $\pi^-p\rightarrow \eta_bn$ are ... More
Arithmetic monodromy actions on pro-metabelian fundamental groups of once-punctured elliptic curvesOct 16 2017We prove structure theorems for the moduli stack of elliptic curves equipped with $G$-structures, where $G$ is a finite 2-generated metabelian group. In particular, we show that if $G$ has exponent $e$, then there is a subgroup $H\le GL_2(\mathbb{Z}/e)$ ... 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
B(0,N)-graded Lie superalgebras coordinatized by quantum toriFeb 18 2006We use a fermionic extension of the bosonic module to obtain a class of B(0,N)-graded Lie superalgebras with nontrivial central extensions.
The asset price bubbles in emerging financial markets: a new statistical approachOct 24 2016The bubble is a controversial and important issue. Many methods which based on the rational expectation have been proposed to detect the bubble. However, for some developing countries, epically China, the asset markets are so young that for many companies, ... More
Optical and Radio Transients after the Collapse of Super-Chandrasekhar White Dwarf Merger RemnantsDec 17 2018Jan 15 2019Super-Chandrasekhar remnants of double white dwarf mergers could sometimes collapse into a rapidly rotating neutron star (NS), accompanying with a mass ejection of a few times $0.01 M_{\odot}$. Bright optical transient emission can be produced by the ... More
Evacuation simulation considering action of the guard in an artificial attackOct 13 2018To investigate the evacuation behaviors of pedestrians considering action of the guard and develop an effective evacuation strategy in the artificial attack, an extended floor field model was proposed. In this model, the assault on pedestrians, the death ... More
Embeddings of Riemannian Manifolds with Finite Eigenvector Fields of Connection LaplacianApr 19 2016Nov 13 2017We study the problem asking if one can embed manifolds into finite dimensional Euclidean spaces by taking finite number of eigenvector fields of the connection Laplacian. This problem is essential for the dimension reduction problem in massive data analysis. ... More
Combinatorial Constructions of Optimal $(m, n,4,2)$ Optical Orthogonal Signature Pattern CodesNov 30 2015Sep 23 2016Optical orthogonal signature pattern codes (OOSPCs) play an important role in a novel type of optical code-division multiple-access (CDMA) network for 2-dimensional image transmission. There is a one-to-one correspondence between an $(m, n, w, \lambda)$-OOSPC ... More
A family of representations of the affine Lie superalgebra $\widehat{\mathfrak{gl}_{m|n}}(\mathbb{C})$Sep 04 2014In this paper, we used the free fields of Wakimoto to construct a class of irreducible representations for the general linear Lie superalgebra $\mathfrak{gl}_{m|n}(\mathbb{C})$. The structures of the representations over the general linear Lie superalgebra ... More
Central extensions of Steinberg Lie superalgebras of small rankJun 06 2006Jul 09 2006It was shown by A.V.Mikhalev and I.A.Pinchuk in [MP] that the second homology group $H_2(\st)$ of the Steinberg Lie superalgebra $\st$ is trivial for $m+n\geq 5$. In this paper, we will work out $H_2(\st)$ explicitly for $m+n=3, 4$.
Determining the Hubble constant from Hubble parameter measurementsJun 23 2016Dec 15 2016We use 28 Hubble parameter, $H(z)$, measurements at intermediate redshifts $0.07 \leq z \leq 2.3$ to determine the present-day Hubble constant $H_0$ in four cosmological models. We measure $H_0 = 68.3^{ +2.7}_{ -2.6 }, 68.4^{ +2.9 }_{ -3.3 }, 65.0^{ +6.5 ... More
Assessing the effect of lens mass model in cosmological application with updated galaxy-scale strong gravitational lensing sampleSep 26 2018Nov 06 2018By comparing the dynamical mass and lensing mass of early type lens galaxies, one can constrain both the cosmological parameters and the density profiles of galaxies. In this paper, we explore the constraining power of this method on cosmological parameters, ... More
Optimal environmental tax swaps and double dividend hypothesisDec 05 2015Taking environmental tax rate as given, is there an optimal allocation of tax revenues to benefit economic variables? This paper analyzes this issue in an overlapping-generations model with the pollution-related health damage. It finds the optimal allocations ... More
Modular quotient varieties and singularities by the cyclic group of order $2p$Dec 28 2018We classify all $n$-dimensional reduced Cohen-Macaulay modular quotient variety $\mathbb{A}_\mathbb{F}^n/C_{2p}$ and study their singularities, where $p$ is a prime number and $C_{2p}$ denotes the cyclic group of order $2p$. In particular, we present ... More
QRunes: High-Level Language for Quantum-Classical Hybrid ProgrammingJan 24 2019Hybrid quantum-classical algorithms have drawn much attention because of their potential to realize the "quantum advantage" in noisy, intermediate-scale quantum (NISQ) devices. Here we introduce QRunes, a cross-platform quantum language for hybrid programming. ... More
Spatial Lobes Division Based Low Complexity Hybrid Precoding and Diversity Combining for mmWave IoT SystemsMar 01 2018Nov 15 2018This paper focuses on the design of low complexity hybrid analog/digital precoding and diversity combining in millimeter wave (mmWave) Internet of things (IoT) systems. Firstly, by exploiting the sparseness property of the mmWave in the angular domain, ... More
Series-Expansion Thermal Tensor Network Approach for Quantum Lattice ModelsSep 05 2016Mar 26 2017In this work we propose a series-expansion thermal tensor network (SETTN) approach for efficient simulations of quantum lattice models. This continuous-time SETTN method is based on the numerically exact Taylor series expansion of equilibrium density ... More
Supplementary Material to: Realization of Three-port Spring Networks with Inerter for Effective Mechanical ControlOct 07 2015This is a supplementary material to "Realization of three-port spring networks with inerter for effective mechanical control" [1], which provides the detailed proofs of some results. For more background information, refer to [2]-[32] and references therein. ... More
$\bar{B}_{d,s} \to D^{*}_{d,s} V$ and $\bar{B}_{d,s}^* \to D_{d,s} V$ decays within QCD Factorization and Possible PuzzlesMay 05 2016Oct 10 2016Motivated by the rapid development of heavy-flavor experiments, phenomenological studies of nonleptonic $\bar{B}_{d,s} \to D^{*}_{d,s} V$ and $\bar{B}_{d,s}^* \to D_{d,s} V$~($V=\rho\,,K^*$) decays are performed within the framework of QCD Factorization. ... More
On the nature of the $Y(4260)$: a light-quark perspectiveFeb 28 2019The $Y(4260)$ has been one of the most puzzling pieces among the so-called $XYZ$ states. In this paper, we try to gain insights into the structure of the $Y(4260)$ from the light-quark perspective. We study the dipion invariant mass spectrum of the $e^+ ... More
Encoding Candlesticks as Images for Patterns Classification Using Convolutional Neural NetworksJan 16 2019Candlestick charts display the high, low, open and closing prices for a specific time series. Candlestick patterns emerge because human actions and reactions are patterned and continuously replicate and captured in the formation of the candles. According ... More
Deep Learning for Malicious Flow DetectionFeb 09 2018Cyber security has grown up to be a hot issue in recent years. How to identify potential malware becomes a challenging task. To tackle this challenge, we adopt deep learning approaches and perform flow detection on real data. However, real data often ... More
Ice model and eight-vertex model on the two-dimensional Sierpinski gasketMar 06 2012We present the numbers of ice model and eight-vertex model configurations (with Boltzmann factors equal to one), I(n) and E(n) respectively, on the two-dimensional Sierpinski gasket SG(n) at stage $n$. For the eight-vertex model, the number of configurations ... More
A new method for analyzing collimation angle of neutron Soller collimatorMar 18 2015Jul 01 2015A new method for analyzing collimation angle of neutron Soller collimator is described. Gaussian distribution formula is used to define the angle distribution function of neutron source and neutron transmission function of Soller collimator. A relationship ... More
Bilayer Linearized Tensor Renormalization Group Approach for Thermal Tensor NetworksDec 06 2016In this paper, we perform a comprehensive study of the renormalization group (RG) method on thermal tensor networks (TTN). By Trotter-Suzuki decomposition, one obtains the 1+1D TTN representing the partition function of 1D quantum lattice models, and ... More
Zero-Resource Neural Machine Translation with Multi-Agent Communication GameFeb 09 2018While end-to-end neural machine translation (NMT) has achieved notable success in the past years in translating a handful of resource-rich language pairs, it still suffers from the data scarcity problem for low-resource language pairs and domains. To ... More
Mitigating the Impact of Speech Recognition Errors on Spoken Question Answering by Adversarial Domain AdaptationApr 16 2019Spoken question answering (SQA) is challenging due to complex reasoning on top of the spoken documents. The recent studies have also shown the catastrophic impact of automatic speech recognition (ASR) errors on SQA. Therefore, this work proposes to mitigate ... More
ALMA Submillimeter Continuum Imaging of the Host Galaxies of GRB021004 and GRB080607Nov 12 2012We report 345 GHz continuum observations of the host galaxies of gamma-ray bursts (GRBs) 021004 and 080607 at z>2 using the Atacama Large Millimeter/Submillimeter Array (ALMA) in Cycle 0. Of the two bursts, GRB021004 is one of the few GRBs that originates ... More
Measurement of Rb 5P3/2 scalar and tensor polarizabilities in a 1064 nm light fieldJul 20 2015We employ doubly-resonant two-photon excitation into the 74S Rydberg state to spectroscopically measure the dynamic scalar polarizability, alpha 0, and tensor polarizability, alpha 2, of rubidium 5P3/2. To reach the necessary high intensities, we employ ... More
A complementary media invisibility cloak that can cloak objects at a distance outside the cloaking shellNov 04 2008Based on the concept of complementary media, we propose an invisibility cloak operating at a finite frequency that can cloak an object with a pre-specified shape and size within a certain distance outside the shell. The cloak comprises of a dielectric ... More
Non-equilibrium quantum phase transition via entanglement decoherence dynamicsOct 13 2016We investigate the decoherence dynamics of continuous variable entanglement as the system-environment coupling strength varies from the weak-coupling to the strong-coupling regimes. Due to the existence of localized modes in the strong-coupling regime, ... More
A Teacher-Student Framework for Zero-Resource Neural Machine TranslationMay 02 2017While end-to-end neural machine translation (NMT) has made remarkable progress recently, it still suffers from the data scarcity problem for low-resource language pairs and domains. In this paper, we propose a method for zero-resource NMT by assuming ... More
A study of $ρ-ω$ mixing in resonance chiral theoryOct 31 2017Dec 26 2017The strong and electromagnetic corrections to $\rho-\omega$ mixing are calculated using a SU(2) version of resonance chiral theory up to next-to-leading orders in $1/N_C$ expansion, respectively. Up to our accuracy, the effect of the momentum dependence ... More
Pion-nucleon elastic scattering amplitude within covariant baryon chiral perturbation theory up to $O(p^4)$ levelJul 31 2012The $O(p^4)$ calculation on pion-nucleon elastic scattering amplitude in EOMS scheme within covariant baryon chiral perturbation theory is reviewed. Numerical fits to partial wave amplitudes up to $\sqrt{s}=1.13$ GeV and 1.20 GeV are performed and the ... More
Unified study of $J/ψ\to PV$, $Pγ^{(*)}$ and light hadron radiative processesNov 05 2014Dec 26 2014Within the framework of the effective Lagrangian approach, we perform a thorough analysis of the $J/\psi \to P\gamma(\gamma^*)$, $J/\psi \to VP$, $V\to P\gamma(\gamma^*)$, $P\to V\gamma(\gamma^*)$ and $P\to\gamma\gamma(\gamma^*)$ processes, where $V$ ... More
Dynamically Context-Sensitive Time-Decay Attention for Dialogue ModelingSep 05 2018Nov 01 2018Spoken language understanding (SLU) is an essential component in conversational systems. Considering that contexts provide informative cues for better understanding, history can be leveraged for contextual SLU. However, most prior work only paid attention ... More
Efficient and Robust Parallel DNN Training through Model Parallelism on Multi-GPU PlatformSep 08 2018Oct 16 2018The training process of Deep Neural Network (DNN) is compute-intensive, often taking days to weeks to train a DNN model. Therefore, parallel execution of DNN training on GPUs is a widely adopted approach to speed up process nowadays. Due to the implementation ... More
Accurate Light Field Depth Estimation with Superpixel Regularization over Partially Occluded RegionsAug 07 2017Depth estimation is a fundamental problem for light field photography applications. Numerous methods have been proposed in recent years, which either focus on crafting cost terms for more robust matching, or on analyzing the geometry of scene structures ... More
Optical and transport properties in doped two-leg ladder antiferromagnetMar 13 2002Within the t-J model, the optical and transport properties of the doped two-leg ladder antiferromagnet are studied based on the fermion-spin theory. It is shown that the optical and transport properties of the doped two-leg ladder antiferromagnet are ... More
Black hole mass, jet power and accretion in AGNApr 21 2015We study the relation between accretion, black hole mass and jet power in AGN, by using a large group of blazars detected by the Fermi Large Area Telescope and radio galaxies. Our main results are as follows. (i) The jet power of FSRQs and FRII-HEG depends ... More
Predict Forex Trend via Convolutional Neural NetworksJan 09 2018Deep learning is an effective approach to solving image recognition problems. People draw intuitive conclusions from trading charts; this study uses the characteristics of deep learning to train computers in imitating this kind of intuition in the context ... More
Mechanisms of Electromechanical Coupling in Strain Based Scanning Probe MicroscopyApr 09 2014Electromechanical coupling is ubiquitous in nature and underpins the functionality of materials and systems as diverse as ferroelectric and multiferroic materials, electrochemical devices, and biological systems, and strain-based scanning probe microscopy ... More
$Λ(t)$CDM Model as a Unified Origin of Holographic and Agegraphic Dark Energy ModelsMar 13 2011Motivated by the fact that any nonzero $\Lambda$ can introduce a length scale or a time scale into Einstein's theory, $r_{\Lambda}=ct_{\Lambda}=\sqrt{3/|\Lambda|}$. Conversely, any cosmological length scale or time scale can introduce a $\Lambda (t)$, ... More
$Λ_{c}^{+}(2940)$ photoproduction off the neutronSep 09 2015Oct 11 2015By assuming that the $\Lambda _{c}^{\ast }(2940)$ is a $pD^{\ast 0}$ molecular state with spin-parity $J^{P}=\frac{1}{2}^{+}$ and $J^{P}=\frac{1}{2}^{-}$, the photoproduction of charmed $\Lambda _{c}^{\ast }(2940)$ baryon in the $\gamma n\rightarrow D^{-}\Lambda ... More
Photoproduction of the charged charmoniumlike $Z_{c}^{+}(4200)$Mar 07 2015Sep 05 2015In this work, inspired by the observation of charmoniumlike $Z_{c}^{+}(4200)$% , we study the photoproduction of charged charmoniumlike $Z_{c}^{+}(4200)$ with an effective Lagrangian approach and the Regge trajectories model. The numerical results indicate ... More
Plasmonic mode converter for controlling optical impedance and nanoscale light-matter interactionJun 07 2012Aug 22 2012To enable multiple functions of plasmonic nanocircuits, it is of key importance to control the propagation properties and the modal distribution of the guided optical modes such that their impedance matches to that of nearby quantum systems and desired ... More
Pseudo-Implicit Feedback for Alleviating Data Sparsity in Top-K RecommendationJan 03 2019We propose PsiRec, a novel user preference propagation recommender that incorporates pseudo-implicit feedback for enriching the original sparse implicit feedback dataset. Three of the unique characteristics of PsiRec are: (i) it views user-item interactions ... More
Wave-shape function analysis -- when cepstrum meets time-frequency analysisMay 06 2016Nov 22 2016We propose to combine cepstrum and nonlinear time-frequency (TF) analysis to study mutiple component oscillatory signals with time-varying frequency and amplitude and with time-varying non-sinusoidal oscillatory pattern. The concept of cepstrum is applied ... More
Analyses of pion-nucleon elastic scattering amplitudes up to $O(p^4)$ in extended-on-mass-shell subtraction schemeDec 09 2012Apr 20 2013We extend the analysis of elastic pion-nucleon scattering up to $O(p^4)$ level using extended-on-mass-shell subtraction scheme within the framework of covariant baryon chiral perturbation theory. Numerical fits to partial wave phase shift data up to $\sqrt{s}=1.13$ ... More
Realizing bending waveguides with anisotropic epsilon-near-zero metamaterialsJan 13 2012Mar 05 2012We study metamaterials with an anisotropic effective permittivity tensor in which one component is near zero. We find that such an anisotropic metamaterial can be used to control wave propagation and construct almost perfect bending waveguides with a ... More
Deeply-bound (24$D_J$+5$S_{1/2}$) $^{87}$Rb and $^{85}$Rb molecules for eight spin couplingsAug 14 2018We observe long-range $^{85}$Rb and $^{87}$Rb (24$D$+5$S_{1/2}$) Rydberg molecules for eight different spin couplings, with binding energies up to 440~MHz and sub-percent relative uncertainty. Isotopic effects of the molecular binding energies arise from ... More
Real-time On-Demand Crowd-powered Entity ExtractionApr 12 2017Dec 06 2017Output-agreement mechanisms such as ESP Game have been widely used in human computation to obtain reliable human-generated labels. In this paper, we argue that a "time-limited" output-agreement mechanism can be used to create a fast and robust crowd-powered ... More
Physical properties variation across the green valley for local galaxiesAug 06 2018We have selected a sample of nearby galaxies from Sloan Digital Sky Survey Data Release 7 (SDSS DR7) to investigate the physical properties variation from blue cloud to green valley to red sequence. The sample is limited in a narrow range in color-stellar ... More
Looking for Cosmological Alfven Waves in WMAP DataMar 30 2004Apr 27 2004A primordial cosmological magnetic field induces and supports vorticity or Alfven waves, which in turn generate cosmic microwave background (CMB) anisotropies. A homogeneous primordial magnetic field with fixed direction induces correlations between the ... More
Using a phenomenological model to test the coincidence problem of dark energyJan 11 2010Mar 10 2010By assuming a phenomenological form for the ratio of the DE and DM densities $\rho_X\propto \rho_{m} a^{\xi}$ (Dalal et al.2001), we discuss the cosmic coincidence problem in light of current observational data. $\xi$ is a key parameter to denote the ... More
Enabling the self-contained refrigerator to work beyond its limits by filtering the reservoirNov 30 2017In this paper, we study the quantum self-contained refrigerator [N. Linden, S. Popescu and P. Skrzypczyk, Phys. Rev. Lett. \textbf{105}, 130401 (2010)] in the strong internal coupling regime with engineered reservoirs. We find that if some modes of the ... More
Twisted vertex operators and unitary Lie algebrasMar 18 2014A representation of the central extension of the unitary Lie algebra coordinated with a skew Laurent polynomial ring is constructed using vertex operators over an integral Z_2-lattice. The irreducible decomposition of the representation is explicitly ... More
Spot the Difference by Object DetectionJan 03 2018In this paper, we propose a simple yet effective solution to a change detection task that detects the difference between two images, which we call "spot the difference". Our approach uses CNN-based object detection by stacking two aligned images as input ... More
Accurate Sampling Timing Acquisition for Baseband OFDM Power-line Communication in Non-Gaussian NoiseNov 08 2012Jan 11 2013In this paper, a novel technique is proposed to address the joint sampling timing acquisition for baseband and broadband power-line communication (BB-PLC) systems using Orthogonal-Frequency-Division-Multiplexing (OFDM), including the sampling phase offset ... More
An effective long-range attraction between protein molecules in solutions studied by small angle neutron scatteringAug 05 2005Small angle neutron scattering intensity distributions taken from cytochrome C and lysozyme protein solutions show a rising intensity at very small wave vector, Q, which can be interpreted in terms of the presence of a weak long-range attraction between ... More
Measurement-device-independent quantum key distribution based on Bell's inequalityJul 28 2014We propose two quantum key distribution (QKD) protocols based on Bell's inequality, which can be considered as modified time-reversed E91 protocol. Similar to the measurement-device-independent quantum key distribution (MDI-QKD) protocol, the first scheme ... More
FEAST: An Automated Feature Selection Framework for Compilation TasksOct 29 2016The success of the application of machine-learning techniques to compilation tasks can be largely attributed to the recent development and advancement of program characterization, a process that numerically or structurally quantifies a target program. ... More
Shock responses of nanoporous aluminum by molecular dynamics simulationsOct 13 2016We present systematic investigations on the shock responses of nanoporous aluminum (np-Al) by nonequilibrium molecular dynamics simulations. The dislocation nucleation sites are found to concentrate in low latitude region near the equator of the spherical ... More
Detection of Gene-Gene Interactions by Multistage Sparse and Low-Rank RegressionApr 13 2013A daunting challenge faced by modern biological sciences is finding an efficient and computationally feasible approach to deal with the curse of high dimensionality. The problem becomes even more severe when the research focus is on interactions. To improve ... More
Integrating multiple random sketches for singular value decompositionAug 29 2016The singular value decomposition (SVD) of large-scale matrices is a key tool in data analytics and scientific computing. The rapid growth in the size of matrices further increases the need for developing efficient large-scale SVD algorithms. Randomized ... More
Long-Distance Measurement-Device-Independent Multiparty Quantum CommunicationDec 02 2014Mar 04 2015The Greenberger-Horne-Zeilinger (GHZ) entanglement, originally introduced to uncover the extreme violation of local realism against quantum mechanics, is an important resource for multiparty quantum communication tasks. But the low intensity and fragility ... More
VQNet: Library for a Quantum-Classical Hybrid Neural NetworkJan 26 2019Deep learning is a modern approach to realize artificial intelligence. Many frameworks exist to implement the machine learning task; however, performance is limited by computing resources. Using a quantum computer to accelerate training is a promising ... More
A data-driven method for syndrome type identification and classification in traditional Chinese medicineOct 27 2014Feb 24 2016Objective: The efficacy of traditional Chinese medicine (TCM) treatments for Western medicine (WM) diseases relies heavily on the proper classification of patients into TCM syndrome types. We develop a data-driven method for solving the classification ... More
Blue photoluminescence from chemically derived graphene oxideSep 13 2009Fluorescent organic compounds are of significant importance to the development of low-cost opto-electronic devices. Blue fluorescence from aromatic or olefinic molecules and their derivatives is particularly important for display and lighting applications. ... More
Moduli Interpretations for Noncongruence Modular CurvesOct 19 2015Aug 20 2016We define the notion of a $G$-structure for elliptic curves, where $G$ is a finite 2-generated group. When $G$ is abelian, a $G$-structure is the same as a classical congruence level structure. There is a natural action of $\text{SL}_2(\mathbb{Z})$ on ... More
Galaxy clustering, CMB and supernova data constraints on $φ$CDM model with massive neutrinosJul 08 2015Dec 11 2015We investigate a scalar field dark energy model (i.e., $\phi$CDM model) with massive neutrinos, where the scalar field possesses an inverse power-law potential, i.e., $V(\phi)\propto {\phi}^{-\alpha}$ ($\alpha>0$). We find that the sum of neutrino masses ... More
End-to-End Joint Learning of Natural Language Understanding and Dialogue ManagerDec 03 2016Jan 04 2017Natural language understanding and dialogue policy learning are both essential in conversational systems that predict the next system actions in response to a current user utterance. Conventional approaches aggregate separate models of natural language ... More
Revisit of the neutron/proton ratio puzzle in intermediate-energy heavy-ion collisionsFeb 03 2015Apr 02 2015Incorporating a newly improved isospin- and momentum-dependent interaction in the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model IBUU11, we have investigated relative effects of the density dependence of nuclear symmetry energy $E_{sym}(\rho)$ ... More
Highly Linear, Broadband Optical Modulator Based on Electro-optic PolymerMar 01 2014In this paper, we present the design, fabrication and characterization of a traveling wave directional coupler modulator based on electro-optic polymer, which is able to provide both high linearity and broad bandwidth. The high linearity is realized by ... More
Learning Multi-Level Information for Dialogue Response Selection by Highway Recurrent TransformerMar 21 2019With the increasing research interest in dialogue response generation, there is an emerging branch formulating this task as selecting next sentences, where given the partial dialogue contexts, the goal is to determine the most probable next sentence. ... More
Ensemble-driven support vector clustering: From ensemble learning to automatic parameter estimationAug 03 2016Aug 09 2016Support vector clustering (SVC) is a versatile clustering technique that is able to identify clusters of arbitrary shapes by exploiting the kernel trick. However, one hurdle that restricts the application of SVC lies in its sensitivity to the kernel parameter ... More
Development of an Autonomous Sanding Robot with Structured-Light TechnologyMar 08 2019Large demand for robotics and automation has been reflected in the sanding works, as current manual operations are labor-intensive, without consistent quality, and also subject to safety and health issues. While several machines have been developed to ... More
Neutral hidden charm pentaquark states $P_c^0(4380)$ and $P_c^0(4450)$ in $π^-p \to J/ψn$ reactionOct 21 2015Dec 26 2015We investigate the neutral hidden charm pentaquark states $P_c^0(4380)$ and $P_c^0(4450)$ in $\pi^-p \to J/\psi n$ reaction within an effective Lagrangian approach. The background contributions for the process mainly come from $t$-channel $\pi$ and $\rho$ ... More
Reexamination of the role of the $Δ^{\ast}$ resonances in the $pp\rightarrow nK^{+}Σ^{+}$ reactionDec 16 2014Nov 12 2015In this work, the role of the $\Delta ^{\ast }$ resonances in the process of $pp\rightarrow nK^{+}\Sigma ^{+}$ are systematically investigated with the effective Lagrangian approach and the isobar model. We find that a $P_{31}$ state, either $\Delta ^{\ast ... More
Knowledge-Grounded Response Generation with Deep Attentional Latent-Variable ModelMar 23 2019End-to-end dialogue generation has achieved promising results without using handcrafted features and attributes specific for each task and corpus. However, one of the fatal drawbacks in such approaches is that they are unable to generate informative utterances, ... More
Ward Identity Implies Recursion Relation at Tree and Loop LevelJul 15 2012Feb 09 2013In this article, we use Ward identity to calculate tree and one loop level off shell amplitudes in pure Yang-Mills theory with a pair of external lines complexified. We explicitly prove Ward identity at tree and one loop level using Feynman rules, and ... More
Galaxy cluster angular size data constraints on dark energyMay 27 2011Jul 20 2011We use angular size versus redshift data for galaxy clusters from Bonamente et al. (2006) to place constraints on model parameters of constant and time-evolving dark energy cosmological models. These constraints are compatible with those from other recent ... More
Parabolic Constructions of Asymptotically Flat 3-metrics of Prescribed Scalar CurvatureDec 04 2012In 1993, Bartnik introduced a quasi-spherical construction of metrics of prescribed scalar curvature on 3-manifolds. Under quasi-spherical ansatz, the problem is converted into the initial value problem for a semi-linear parabolic equation of the lapse ... More
Ultra-compact structure in intermediate-luminosity radio quasars: building a sample of standard cosmological rulers and improving the dark energy constraints up to $z\sim 3$Aug 29 2017In this paper, we present a new compiled milliarcsecond compact radio data set of 120 intermediate-luminosity quasars in the redshift range $0.46< z <2.76$. These quasars show negligible dependence on redshifts and intrinsic luminosity, and thus represents, ... More
Modeling Dust Polarization Observations of Molecular Clouds through MHD SimulationsSep 25 2017Dec 01 2017The BLASTPol observations of Vela C have provided the most detailed characterization of the polarization fraction $p$ and dispersion in polarization angles $S$ for a molecular cloud. We compare the observed distributions of $p$ and $S$ with those obtained ... More
Constraints on non-flat cosmologies with massive neutrinos after Planck 2015Mar 23 2016Jul 19 2016We investigate two dark energy cosmological models (i.e., the $\Lambda$CDM and $\phi$CDM models) with massive neutrinos assuming two different neutrino mass hierarchies in both the spatially flat and non-flat scenarios, where in the $\phi$CDM model the ... More
Superconductivity at 43 K in a single C-C bond linked terphenylMar 16 2017Organic compounds are promising candidates to exhibit high temperature or room temperature superconductivity. However, the critical temperatures of organic superconductors are bounded to 38 K. By doping potassium into $p$-terphenyl consisting of C and ... More
Incremental Classifier Learning with Generative Adversarial NetworksFeb 02 2018In this paper, we address the incremental classifier learning problem, which suffers from catastrophic forgetting. The main reason for catastrophic forgetting is that the past data are not available during learning. Typical approaches keep some exemplars ... More
RAP-Net: Recurrent Attention Pooling Networks for Dialogue Response SelectionMar 21 2019The response selection has been an emerging research topic due to the growing interest in dialogue modeling, where the goal of the task is to select an appropriate response for continuing dialogues. To further push the end-to-end dialogue model toward ... More
Evolutionary Prisoner's Dilemma Game in FlocksMay 10 2009May 18 2010We investigate an evolutionary prisoner's dilemma game among self-driven agents, where collective motion of biological flocks is imitated through averaging directions of neighbors. Depending on the temptation to defect and the velocity at which agents ... More
A User Simulator for Task-Completion DialoguesDec 17 2016Nov 13 2017Despite widespread interests in reinforcement-learning for task-oriented dialogue systems, several obstacles can frustrate research and development progress. First, reinforcement learners typically require interaction with the environment, so conventional ... More
Discriminative Deep Dyna-Q: Robust Planning for Dialogue Policy LearningAug 28 2018Sep 06 2018This paper presents a Discriminative Deep Dyna-Q (D3Q) approach to improving the effectiveness and robustness of Deep Dyna-Q (DDQ), a recently proposed framework that extends the Dyna-Q algorithm to integrate planning for task-completion dialogue policy ... More
Refined Schur Method for Robust Pole Assignment with Repeated PolesFeb 27 2016Schur-type methods in \cite{Chu2} and \cite{GCQX} solve the robust pole assignment problem by employing the departure from normality of the closed-loop system matrix as the measure of robustness. They work well generally when all poles to be assigned ... More
Paying More Attention to Motion: Attention Distillation for Learning Video RepresentationsApr 05 2019We address the challenging problem of learning motion representations using deep models for video recognition. To this end, we make use of attention modules that learn to highlight regions in the video and aggregate features for recognition. Specifically, ... More
Majorana Fermions in Periodically Driven Semiconductor-Superconductor HeterostructureJun 17 2013We propose a new approach to create Majorana fermions at the edge of a periodically driven semiconductor-superconductor Heterostructure. We calculate the quasi-energy spectrum of the periodically driven Heterostructure by using the Floquet's theory. When ... More
On the Weak Convergence and Central Limit Theorem of Blurring and Nonblurring Processes with Application to Robust Location EstimationDec 03 2014Jan 27 2015This article studies the weak convergence and associated Central Limit Theorem for blurring and nonblurring processes. Then, they are applied to the estimation of location parameter. Simulation studies show that the location estimation based on the convergence ... More
A real-time design based on FPGA for Expeditious Error Reconciliation in QKD systemJan 10 2013For high-speed quantum key distribution systems, error reconciliation is often the bottleneck affecting system performance. By exchanging common information through a public channel, the identical key can be generated on both communicating sides. However, ... More