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Jun 30, 2018
06/18

by
Emil J. Zak; Jonathan Tennyson; Oleg L. Polyansky; Lorenzo Lodi; Nikolay F. Zobov; Sergei A. Tashkun; Valery I. Perevalov

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Remote sensing experiments require high-accuracy, preferably sub-percent, line intensities and in response to this need we present computed room temperature line lists for six symmetric isotopologues of carbon dioxide: $^{13}$C$^{16}$O$_2$, $^{14}$C$^{16}$O$_2$, $^{12}$C$^{17}$O$_2$, $^{12}$C$^{18}$O$_2$, $^{13}$C$^{17}$O$_2$ and $^{13}$C$^{18}$O$_2$, covering the range 0-8000 \cm. Our calculation scheme is based on variational nuclear motion calculations and on a reliability analysis of the...

Topics: Atmospheric and Oceanic Physics, Physics, Solar and Stellar Astrophysics, Astrophysics, Earth and...

Source: http://arxiv.org/abs/1701.08267

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0.0

Jun 30, 2018
06/18

by
Aliou Sow; Roman E. Semenko; Aslan R. Kasimov

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We use numerical simulations of the reactive Euler equations to analyze the nonlinear stability of steady-state one-dimensional solutions for gaseous detonations in the presence of both momentum and heat losses. Our results point to a possible stabilization mechanism for the low velocity detonations in such systems. The mechanism stems from the existence of a one-parameter family of solutions found in Semenko et al. (Shock Waves 26 (2), 141-160, 2016).

Topics: Fluid Dynamics, Physics

Source: http://arxiv.org/abs/1701.08265

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Jun 30, 2018
06/18

by
Hadi Goudarzi; Maryam Khezerlou; Samin Asgarifar

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Among the potential applications of topological insulators, we investigate theoretically the effect of coexistence of proximity-induced ferromagnetism and superconductivity on the surface states of 3-dimensional topological insulator, where the superconducting electron-hole excitations can be significantly affected by the magnetization of ferromagnetic order. We find that, Majorana mode energy, as a verified feature of TI F/S structure, along the interface sensitively depends on the magnitude...

Topics: Mesoscale and Nanoscale Physics, Condensed Matter

Source: http://arxiv.org/abs/1701.08275

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Jun 30, 2018
06/18

by
Norio Konno; Iwao Sato; Etsuo Segawa

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Recently, the staggered quantum walk (SQW) on a graph is discussed as a generalization of coined quantum walks on graphs and Szegedy walks. We present a formula for the time evolution matrix of a 2-tessellable SQW on a graph, and so directly give its spectra. Furthermore, we present a formula for the Szegedy matrix of a bipartite graph by the same method, and so give its spectra. As an application, we present a formula for the characteristic polynomial of the modified Szegedy matrix in the...

Topics: Mathematical Physics, Mathematics

Source: http://arxiv.org/abs/1701.08274

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Jun 30, 2018
06/18

by
Murat Kocaoglu; Alexandros G. Dimakis; Sriram Vishwanath; Babak Hassibi

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We study the problem of identifying the causal relationship between two discrete random variables from observational data. We recently proposed a novel framework called entropic causality that works in a very general functional model but makes the assumption that the unobserved exogenous variable has small entropy in the true causal direction. This framework requires the solution of a minimum entropy coupling problem: Given marginal distributions of m discrete random variables, each on n...

Topics: Computing Research Repository, Machine Learning, Information Theory, Statistics, Artificial...

Source: http://arxiv.org/abs/1701.08254

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Jun 30, 2018
06/18

by
Nicolas Gisin

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We present the quantum measurement problem as a serious physics problem. Serious because without a resolution, quantum theory is not complete, as it does not tell how one should - in principle - perform measurements. It is physical in the sense that the solution will bring new physics, i.e. new testable predictions, hence it is not merely a matter of interpretation of a frozen formalism. I argue that the two popular ways around the measurement problem, many-worlds and Bohmian-like mechanics,...

Topic: Quantum Physics

Source: http://arxiv.org/abs/1701.08300

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Jun 30, 2018
06/18

by
Cinzia Bisi; Graziano Gentili

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Quaternionic tori are defined as quotients of the skew field $\mathbb{H}$ of quaternions by rank-4 lattices. Using slice regular functions, these tori are endowed with natural structures of quaternionic manifolds (in fact quaternionic curves), and a fundamental region in a $12$-dimensional real subspace is then constructed to classify them up to biregular diffeomorphisms. The points of the moduli space correspond to suitable \emph{special} bases of rank-4 lattices, which are studied with...

Topics: Algebraic Geometry, Complex Variables, Mathematics

Source: http://arxiv.org/abs/1701.08304

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0.0

Jun 30, 2018
06/18

by
Yosuke Nakata; Yudai Taira; Toshihiro Nakanishi; Fumiaki Miyamaru

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We designed a cut-wire-pair metasurface that works as a transparent terahertz half-wave plate, by matching the electric and magnetic resonances of the structure. Due to the impedance matching nature of the resonances, a large transmission phase shift between the orthogonal polarizations was achieved, while permitting a high transmission. The electric and magnetic responses of the proposed structure were confirmed by evaluating the electric admittance and magnetic impedance. The structure was...

Topics: Optics, Physics

Source: http://arxiv.org/abs/1701.08346

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1.0

Jun 30, 2018
06/18

by
Giovanni Carraro; David Turner; Daniel Majaess; Gustavo Baume; Roberto Gamen; Jose Molina Lera

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Photometric CCD {\it UBVI}$_C$ photometry obtained for 4860 stars surrounding the embedded southern cluster SAI~113 (Skiff~8) is used to examine the reddening in the field and derive the distance to the cluster and nearby van~Genderen~1. Spectroscopic color excesses for bright cluster stars, photometric reddenings for A3 dwarfs, and dereddening of cluster stars imply that the reddening and extinction laws match results derived for other young clusters in Carina: E$_{U-B}/$E$_{B-V} \simeq 0.64$...

Topics: Astrophysics of Galaxies, Astrophysics

Source: http://arxiv.org/abs/1701.08319

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0.0

Jun 30, 2018
06/18

by
Baigong Zheng

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We present the first polynomial-time approximation schemes, i.e., (1 + {\epsilon})-approximation algorithm for any constant {\epsilon} > 0, for the minimum three-edge connected spanning subgraph problem and the minimum three-vertex connected spanning subgraph problem in undirected planar graphs. Both the approximation schemes run in linear time.

Topics: Data Structures and Algorithms, Computing Research Repository

Source: http://arxiv.org/abs/1701.08315

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0.0

Jun 30, 2018
06/18

by
J. S. Langer

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The statistical-thermodynamic dislocation theory developed in previous papers is used here in an analysis of yielding transitions and grain-size effects in polycrystalline solids. Calculations are based on the 1995 experimental results of Meyers et al. for polycrystalline copper under strain-hardening conditions. The main assertion is that the well known Hall-Petch effects are caused by enhanced strengths of dislocation sources at the edges of grains instead of the commonly assumed resistance...

Topics: Materials Science, Condensed Matter

Source: http://arxiv.org/abs/1701.08336

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0.0

Jun 30, 2018
06/18

by
Fouad Naderi

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We use a method similar to ultraproducts to study the common fixed point of a left reversible semitopological semigroup acting on a Banach space. As an application, we prove a Bruck-type theorem for nearly uniformly convex Banach spaces to the effect that such spaces have weak fixed point property for left reversible semigroups.

Topics: Functional Analysis, Mathematics

Source: http://arxiv.org/abs/1702.00274

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0.0

Jun 30, 2018
06/18

by
José Cantarero; Natàlia Castellana; Lola Morales

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In this paper we obtain a description of the Grothendieck group of complex vector bundles over the classifying space of a p-local finite group in terms of representation rings of subgroups of its Sylow. We also prove a stable elements formula for generalized cohomological invariants of p-local finite groups, which is used to show the existence of unitary embeddings of p-local finite groups. Finally, we show that the augmentation map for the cochains of the classifying space of a p-local finite...

Topics: Algebraic Topology, Group Theory, Mathematics

Source: http://arxiv.org/abs/1701.08309

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7.0

Jun 30, 2018
06/18

by
Eita Nakamura; Kazuyoshi Yoshii; Shigeki Sagayama

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In a recent conference paper, we have reported a rhythm transcription method based on a merged-output hidden Markov model (HMM) that explicitly describes the multiple-voice structure of polyphonic music. This model solves a major problem of conventional methods that could not properly describe the nature of multiple voices as in polyrhythmic scores or in the phenomenon of loose synchrony between voices. In this paper we present a complete description of the proposed model and develop an...

Topics: Sound, Artificial Intelligence, Computing Research Repository

Source: http://arxiv.org/abs/1701.08343

9
9.0

Jun 30, 2018
06/18

by
A. Mani

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The study of mereology (parts and wholes) in the context of formal approaches to vagueness can be approached in a number of ways. In the context of rough sets, mereological concepts with a set-theoretic or valuation based ontology acquire complex and diverse behavior. In this research a general rough set framework called granular operator spaces is extended and the nature of parthood in it is explored from a minimally intrusive point of view. This is used to develop counting strategies that...

Topics: Mathematics, Computing Research Repository, Information Theory, Logic in Computer Science,...

Source: http://arxiv.org/abs/1701.08301

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0.0

Jun 30, 2018
06/18

by
A. I. Bandura; O. B. Skaskiv

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In this paper, there are obtained growth estimates of entire in $\mathbb{C}^n$ function of bounded $\mathbf{L}$-index in joint variables. They describe the behaviour of maximum modulus of entire function on a skeleton in a polydisc by behaviour of the function $\mathbf{L}(z)=(l_1(z),\ldots,l_n(z)),$ where for every $j\in\{1,\ldots, n\}$ \ $l_j:\mathbb{C}^n\to \mathbb{R}_+$ is a continuous function. We generalised known results of W. K. Hayman, M. M. Sheremeta, A. D. Kuzyk, M. T. Borduyak, T. O....

Topics: Complex Variables, Mathematics

Source: http://arxiv.org/abs/1701.08276

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1.0

Jun 30, 2018
06/18

by
Christian Reinhardt; Joachim Stadel

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In this paper we present solutions to three short comings of Smoothed Particles Hydrodynamics (SPH) encountered in previous work when applying it to Giant Impacts. First we introduce a novel method to obtain accurate SPH representations of a planet's equilibrium initial conditions based on equal area tessellations of the sphere. This allows one to imprint an arbitrary density and internal energy profile with very low noise which substantially reduces computation because these models require no...

Topics: Fluid Dynamics, Physics, Computational Physics, Astrophysics, Earth and Planetary Astrophysics

Source: http://arxiv.org/abs/1701.08296

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1.0

Jun 30, 2018
06/18

by
Mohamad Jaafar Ali; Hassine Moungla; Ahmed Mehaoua

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Recent advances in microelectronics have enabled the realization of Wireless Body Area Networks (WBANs). Increasing the transmission power of WBAN's nodes improves the Signal to Interference plus Noise Ratio (SINR), and hence decreases the bit error probability. However, this increase may impose interference on nodes within the same WBAN or on other nodes of nearby coexisting WBANs, as these WBANs may use similar frequencies. Due to co-channel interference, packet collisions and retransmissions...

Topics: Networking and Internet Architecture, Computing Research Repository

Source: http://arxiv.org/abs/1701.08295

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0.0

Jun 30, 2018
06/18

by
Anton Kapustin; Ryan Thorngren

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We discuss bosonization and Fermionic Short-Range-Entangled (FSRE) phases of matter in one, two, and three spatial dimensions, emphasizing the physical meaning of the cohomological parameters which label such phases and the connection with higher-form symmetries. We propose a classification scheme for fermionic SPT phases in three spatial dimensions with an arbitrary finite point symmetry G. It generalizes the supercohomology of Gu and Wen. We argue that the most general such phase can be...

Topics: Strongly Correlated Electrons, High Energy Physics - Theory, Condensed Matter

Source: http://arxiv.org/abs/1701.08264

0
0.0

Jun 30, 2018
06/18

by
The BABAR Collaboration

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We study the processes $e^+ e^-\to K^0_S K^0_L\pi^0\gamma$, $K^0_S K^0_L\eta\gamma$, and $K^0_S K^0_L\pi^0\pi^0\gamma$, where the photon is radiated from the initial state, providing cross section measurements for the hadronic final states over a continuum of center-of-mass energies. The results are based on 469~$fb^{-1}$ of data collected at or near the $\Upsilon(4S)$~ resonance with the BaBar detector at SLAC. We present the first measurements of the $e^+ e^-\to K^0_S K^0_L\pi^0$, $K^0_S...

Topic: High Energy Physics - Experiment

Source: http://arxiv.org/abs/1701.08297

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3.0

Jun 30, 2018
06/18

by
Yoju Fujino; Tadashi Wadayama

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In this paper, we propose a construction of non-binary WOM (Write-Once-Memory) codes for WOM storages such as flash memories. The WOM codes discussed in this paper are fixed rate WOM codes where messages in a fixed alphabet of size $M$ can be sequentially written in the WOM storage at least $t^*$-times. In this paper, a WOM storage is modeled by a state transition graph. The proposed construction has the following two features. First, it includes a systematic method to determine the encoding...

Topics: Information Theory, Computing Research Repository, Mathematics

Source: http://arxiv.org/abs/1701.08347

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1.0

Jun 30, 2018
06/18

by
Andreas Nink

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In this thesis we investigate various fundamental aspects of asymptotically safe quantum gravity, in particular the compatibility of Asymptotic Safety with the requirements for background independence and unitarity. The first part contains a detailed analysis of the space of metrics. We unveil a novel, specifically designed connection on this space and use the corresponding geodesics to connect all metrics having the same signature. In the second part we study the consequences of different...

Topics: High Energy Physics - Theory, General Relativity and Quantum Cosmology, Mathematical Physics,...

Source: http://arxiv.org/abs/1701.08344

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1.0

Jun 30, 2018
06/18

by
Carlos Bocker-Neto; Ricardo Bortolotti

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Consider a dynamical system $T:\mathbb{T}\times \mathbb{R}^{d} \rightarrow \mathbb{T}\times \mathbb{R}^{d} $ given by $ T(x,y) = (E(x), C(y) + f(x))$, where $E$ is a linear expanding map of $\mathbb{T}$, $C$ is a linear contracting map of $\mathbb{R}^d$ and $f$ is in $C^2(\mathbb{T},\mathbb{R}^d)$. We prove that if $T$ is volume expanding and $u\geq d$, then for every $E$ there exists an open set $\mathcal{U}$ of pairs $(C,f)$ for which the corresponding dynamic $T$ admits an absolutely...

Topics: Dynamical Systems, Mathematics

Source: http://arxiv.org/abs/1701.08342

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0.0

Jun 30, 2018
06/18

by
Christoph Becker; Dawn Walker; Curtis McCord

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When making choices in software projects, engineers and other stakeholders engage in decision making that involves uncertain future outcomes. Research in psychology, behavioral economics and neuroscience has questioned many of the classical assumptions of how such decisions are made. This literature review aims to characterize the assumptions that underpin the study of these decisions in Software Engineering. We identify empirical research on this subject and analyze how the role of time has...

Topics: Software Engineering, Computing Research Repository

Source: http://arxiv.org/abs/1701.08310

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1.0

Jun 30, 2018
06/18

by
Ronald L. Rivest

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We propose a simple risk-limiting audit for elections, ClipAudit. To determine whether candidate A (the reported winner) actually beat candidate B in a plurality election, ClipAudit draws ballots at random, without replacement, until either all cast ballots have been drawn, or until \[ a - b \ge \beta \sqrt{a+b} \] where $a$ is the number of ballots in the sample for the reported winner A, and $b$ is the number of ballots in the sample for opponent B, and where $\beta$ is a constant determined...

Topics: Cryptography and Security, Statistics, Applications, Computing Research Repository

Source: http://arxiv.org/abs/1701.08312

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0.0

Jun 30, 2018
06/18

by
Imre Leader; Luka Milićević; Ta Sheng Tan

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Let $f_r(n)$ be the minimum number of complete $r$-partite $r$-graphs needed to partition the edge set of the complete $r$-uniform hypergraph on $n$ vertices. Graham and Pollak showed that $f_2(n) = n-1$. An easy construction shows that $f_r(n)\le (1-o(1))\binom{n}{\lfloor r/2\rfloor}$ and it has been unknown if this upper bound is asymptotically sharp. In this paper we show that $f_r(n)\le (\frac{14}{15}+o(1))\binom{n}{r/2}$ for each even $r\ge 4$.

Topics: Combinatorics, Mathematics

Source: http://arxiv.org/abs/1701.08335

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1.0

Jun 30, 2018
06/18

by
Viktor Witkovsky; Gejza Wimmer; Tomas Duby

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A non-parametric method for evaluation of the aggregate loss distribution (ALD) by combining and numerically inverting the empirical characteristic functions (CFs) is presented and illustrated. This approach to evaluate ALD is based on purely non-parametric considerations, i.e., based on the empirical CFs of frequency and severity of the claims in the actuarial risk applications. This approach can be, however, naturally generalized to a more complex semi-parametric modeling approach, e.g., by...

Topics: Computation, Statistics, Risk Management, Applications, Quantitative Finance

Source: http://arxiv.org/abs/1701.08299

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0.0

Jun 30, 2018
06/18

by
Peilong Hong

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Random scattering is usually viewed as a serious nuisance in optical imaging, and needs to be prevented in the conventional imaging scheme based on single-photon interference. Here we proposed a two-photon imaging scheme with the widely used lens replaced by a dynamic random medium. In contrast to destroying imaging process, the dynamic random medium in our scheme works as a crucial imaging element to bring constructive interference, and allows us to image an object from light field scattered...

Topics: Optics, Physics

Source: http://arxiv.org/abs/1701.08348

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1.0

Jun 30, 2018
06/18

by
Joseph Doolittle

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We present a partial description of which polytopes are reconstructible from their graphs. This is an extension of work by Blind and Mani (1987) and Kalai (1988), which showed that simple polytopes can be reconstructed from their graphs. In particular, we introduce a notion of $h$-nearly simple and prove that 1-nearly simple and 2-nearly simple polytopes are reconstructible from their graphs. We also give an example of a 3-nearly simple polytope which is not reconstructible from its graph....

Topics: Combinatorics, Mathematics

Source: http://arxiv.org/abs/1701.08334

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6.0

Jun 30, 2018
06/18

by
Ebrahim Ansari; M. H. Sadreddini; Mostafa Sheikhalishahi; Richard Wallace; Fatemeh Alimardani

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The effectiveness of a statistical machine translation system (SMT) is very dependent upon the amount of parallel corpus used in the training phase. For low-resource language pairs there are not enough parallel corpora to build an accurate SMT. In this paper, a novel approach is presented to extract bilingual Persian-Italian parallel sentences from a non-parallel (comparable) corpus. In this study, English is used as the pivot language to compute the matching scores between source and target...

Topics: Computing Research Repository, Computation and Language

Source: http://arxiv.org/abs/1701.08339

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0.0

Jun 30, 2018
06/18

by
I. K. Yanson; L. F. Rybal'chenko; V. V. Fisun; N. L. Bobrov; V. M. Kirzhner; Yu. D. Tret'yakov; A. R. Kaul'; I. E. Graboi

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Point-contacts formed by the high-temperature superconductor $\rm YBa_2Cu_3O_{7-\delta}$ prepared by cryochemical technique, and a noble metal Ag or Cu) are investigated. The maximum value of the energy gap $\Delta\simeq 40~meV$ and the ratio $2\Delta/kT_c\simeq 12$ are obtained. It is found that along certain crystallographic axes of the superconductor under investigation, the electrical resistivity $\lesssim 10^{-5} \Omega\cdot cm$.

Topics: Condensed Matter, Superconductivity

Source: http://arxiv.org/abs/1701.08293

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0.0

Jun 30, 2018
06/18

by
Uri Ben-Ya'acov

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Relativistic Coulomb systems are studied in velocity space, prompted by the fact that the study of Newtonian Kepler/Coulomb systems in velocity space provides a method much simpler (and more elegant) than the familiar analytic solutions in ordinary space. The key for the simplicity and elegance of the velocity-space method is the linearity of the velocity equation, which is a unique feature of $1/r$ interactions for Newtonian and relativistic systems alike, allowing relatively simple analytic...

Topics: Physics, Classical Physics

Source: http://arxiv.org/abs/1701.08281

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0.0

Jun 30, 2018
06/18

by
N. Behzadi; E. Faizi; O. Heibati

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In this paper, by exploiting the weak measurement and quantum measurement re- versal (WMQMR) procedure, we propose a scheme to show how one can protect the geometric quantum discord (GQD) of a two-qutrit V-type atomic system each of which interacts with a dissipative reservoir independently. We examine the scheme for the GQD of the initial two-qutrit Werner and Horodecki states for different classes of weak mea- surement strengthes. It is found out that the presented protocol enables us to...

Topic: Quantum Physics

Source: http://arxiv.org/abs/1701.08278

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1.0

Jun 30, 2018
06/18

by
Andrew C. Heusser; Kirsten Ziman; Lucy L. W. Owen; Jeremy R. Manning

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Data visualizations can reveal trends and patterns that are not otherwise obvious from the raw data or summary statistics. While visualizing low-dimensional data is relatively straightforward (for example, plotting the change in a variable over time as (x,y) coordinates on a graph), it is not always obvious how to visualize high-dimensional datasets in a similarly intuitive way. Here we present HypeTools, a Python toolbox for visualizing and manipulating large, high-dimensional datasets. Our...

Topics: Other Statistics, Statistics

Source: http://arxiv.org/abs/1701.08290

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0.0

Jun 30, 2018
06/18

by
Christos Perentis; Michele Vescovi; Chiara Leonardi; Corrado Moiso; Mirco Musolesi; Fabio Pianesi; Bruno Lepri

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The wide adoption of mobile devices and social media platforms have dramatically increased the collection and sharing of personal information. More and more frequently, users are called to take decisions concerning the disclosure of their personal information. In this study, we investigate the factors affecting users' choices toward the disclosure of their personal data, including not only their demographic and self-reported individual characteristics, but also their social interactions and...

Topics: Human-Computer Interaction, Cryptography and Security, Computers and Society, Computing Research...

Source: http://arxiv.org/abs/1701.08308

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0.0

Jun 30, 2018
06/18

by
Collin Bleak; Matthew G. Brin; Martin Kassabov; Justin Tatch Moore; Matthew C. B. Zaremsky

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We adapt the Ping-Pong Lemma, which historically was used to study free products of groups, to the setting of the homeomorphism group of the unit interval. As a consequence, we isolate a large class of generating sets for subgroups of $\mathrm{Homeo}_+(I)$ for which certain finite dynamical data can be used to determine the marked isomorphism type of the groups which they generate. As a corollary, we will obtain a criteria for embedding subgroups of $\mathrm{Homeo}_+(I)$ into Richard Thompson's...

Topics: Group Theory, Mathematics

Source: http://arxiv.org/abs/1701.08321

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0.0

Jun 30, 2018
06/18

by
David M. Harrington; Stacey R. Sueoka

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We outline polarization performance calculations and predictions for the Daniel K. Inouye Solar Telescope (DKIST) optics and show Mueller matrices for two of the first light instruments. Telescope polarization is due to polarization dependent mirror reflectivity and rotations between groups of mirrors as the telescope moves in altitude and azimuth. The Zemax optical modeling software has polarization ray-trace capabilities and predicts system performance given a coating prescription. We develop...

Topics: Instrumentation and Methods for Astrophysics, Astrophysics

Source: http://arxiv.org/abs/1701.08327

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0.0

Jun 30, 2018
06/18

by
Carlo Marinelli; Luca Scarpa

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We prove existence and uniqueness of strong solutions for a class of second-order stochastic PDEs with multiplicative Wiener noise and drift of the form $\operatorname{div} \gamma(\nabla \cdot)$, where $\gamma$ is a maximal monotone graph in $\mathbb{R}^n \times \mathbb{R}^n$ obtained as the subdifferential of a convex function satisfying very mild assumptions on its behavior at infinity. The well-posedness result complements the corresponding one in our recent work arXiv:1612.08260 where,...

Topics: Probability, Analysis of PDEs, Mathematics

Source: http://arxiv.org/abs/1701.08326

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1.0

Jun 30, 2018
06/18

by
Kenneth K H Fung; Geraint F Lewis; Xiaofeng Wu

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A vast wealth of literature exists on the topic of rocket trajectory optimisation, particularly in the area of interplanetary trajectories due to its relevance today. Studies on optimising interstellar and intergalactic trajectories are usually performed in flat spacetime using an analytical approach, with very little focus on optimising interstellar trajectories in a general relativistic framework. This paper examines the use of low-acceleration rockets to reach galactic destinations in the...

Topics: Instrumentation and Methods for Astrophysics, Physics, Astrophysics of Galaxies, Space Physics,...

Source: http://arxiv.org/abs/1702.00030

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3.0

Jun 30, 2018
06/18

by
Nattiya Kanhabua; Philipp Kemkes; Wolfgang Nejdl; Tu Ngoc Nguyen; Felipe Reis; Nam Khanh Tran

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Significant parts of cultural heritage are produced on the web during the last decades. While easy accessibility to the current web is a good baseline, optimal access to the past web faces several challenges. This includes dealing with large-scale web archive collections and lacking of usage logs that contain implicit human feedback most relevant for today's web search. In this paper, we propose an entity-oriented search system to support retrieval and analytics on the Internet Archive. We use...

Topics: Information Retrieval, Computing Research Repository, Digital Libraries

Source: http://arxiv.org/abs/1701.08256

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0.0

Jun 30, 2018
06/18

by
Azam Asanjarani; Yoni Nazarathy; Philip K. Pollett

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This is an annotated bibliography on estimation and inference results for queues and related stochastic models. The purpose of this document is to collect and categorise works in the field, allowing for researchers and practitioners to explore the various types of results that exist. This bibliography attempts to include all known works that satisfy both of these requirements: -Works that deal with queueing models. -Works that contain contributions related to the methodology of parameter...

Topics: Statistics Theory, Statistics, Computing Research Repository, Performance, Mathematics

Source: http://arxiv.org/abs/1701.08338

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Jun 30, 2018
06/18

by
Farnaz Basiri; Jose Casadiego; Marc Timme; Dirk Witthaut

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We develop methods to efficiently reconstruct the topology and line parameters of a power grid from the measurement of nodal variables. We propose two compressed sensing algorithms that minimize the amount of necessary measurement resources by exploiting network sparsity, symmetry of connections and potential prior knowledge about the connectivity. The algorithms are reciprocal to established state estimation methods, where nodal variables are estimated from few measurements given the network...

Topics: Optimization and Control, Systems and Control, Computing Research Repository, Mathematics

Source: http://arxiv.org/abs/1701.09084

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Jun 30, 2018
06/18

by
Jia Xu; Yong Yao

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This paper proposes a totally constructive approach for the proof of Hilbert's theorem on ternary quartic forms. The main contribution is the ladder technique, with which the Hilbert's theorem is proved vividly.

Topics: Algebraic Geometry, Symbolic Computation, Computing Research Repository, Mathematics

Source: http://arxiv.org/abs/1701.08294

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Jun 30, 2018
06/18

by
Zohreh Shams; Marina De Vos; Julian Padget; Wamberto W. Vasconcelos

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Autonomous software agents operating in dynamic environments need to constantly reason about actions in pursuit of their goals, while taking into consideration norms which might be imposed on those actions. Normative practical reasoning supports agents making decisions about what is best for them to (not) do in a given situation. What makes practical reasoning challenging is the interplay between goals that agents are pursuing and the norms that the agents are trying to uphold. We offer a...

Topics: Artificial Intelligence, Computing Research Repository

Source: http://arxiv.org/abs/1701.08306

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Jun 30, 2018
06/18

by
Pan Li; Arya Mazumdar; Olgica Milenkovic

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We propose a novel rank aggregation method based on converting permutations into their corresponding Lehmer codes or other subdiagonal images. Lehmer codes, also known as inversion vectors, are vector representations of permutations in which each coordinate can take values not restricted by the values of other coordinates. This transformation allows for decoupling of the coordinates and for performing aggregation via simple scalar median or mode computations. We present simulation results...

Topics: Learning, Artificial Intelligence, Computing Research Repository

Source: http://arxiv.org/abs/1701.09083

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Jun 30, 2018
06/18

by
Clifford A. Bearden

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In previous work, we defined and studied $\Sigma^*$-modules, a class of Hilbert $C^*$-modules over $\Sigma^*$-algebras (the latter are $C^*$-algebras that are sequentially closed in the weak operator topology). The present work continues this study by developing the appropriate $\Sigma^*$-algebraic analogue of the notion of strong Morita equivalence for $C^*$-algebras. We define strong $\Sigma^*$-Morita equivalence, prove a few characterizations, look at the relationship with equivalence of...

Topics: Operator Algebras, Mathematics

Source: http://arxiv.org/abs/1701.08333

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Jun 30, 2018
06/18

by
İlke Çuğu; Eren Şener; Çağrı Erciyes; Burak Balcı; Emre Akın; Itır Önal; Ahmet Oğuz Akyüz

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We propose a novel tree classification system called Treelogy, that fuses deep representations with hand-crafted features obtained from leaf images to perform leaf-based plant classification. Key to this system are segmentation of the leaf from an untextured background, using convolutional neural networks (CNNs) for learning deep representations, extracting hand-crafted features with a number of image processing techniques, training a linear SVM with feature vectors, merging SVM and CNN...

Topics: Computing Research Repository, Computer Vision and Pattern Recognition

Source: http://arxiv.org/abs/1701.08291

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Jun 30, 2018
06/18

by
Sima Bahrani; Mohsen Razavi; Jawad A. Salehi

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In this paper, we consider the problem of wavelength assignment in dense-wavelength-division-multiplexing (DWDM) systems that integrate both quantum and classical channels. This requires the transmission of weak quantum key distribution (QKD) signals alongside intense classical signals on the same fiber, where the former can be masked by the background noise induced by the latter. Here, we investigate how optimal wavelength assignment can mitigate this problem. We consider different DWDM...

Topic: Quantum Physics

Source: http://arxiv.org/abs/1701.08270

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Jun 30, 2018
06/18

by
Xudong Sun; Pengcheng Wu; Steven C. H. Hoi

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In this report, we present a new face detection scheme using deep learning and achieve the state-of-the-art detection performance on the well-known FDDB face detetion benchmark evaluation. In particular, we improve the state-of-the-art faster RCNN framework by combining a number of strategies, including feature concatenation, hard negative mining, multi-scale training, model pretraining, and proper calibration of key parameters. As a consequence, the proposed scheme obtained the...

Topics: Computing Research Repository, Computer Vision and Pattern Recognition

Source: http://arxiv.org/abs/1701.08289

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Jun 30, 2018
06/18

by
Mareile Große Ruse; Adeline Samson; Susanne Ditlevsen

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Modeling of longitudinal data often requires diffusion models that incorporate overall time-dependent, nonlinear dynamics of multiple components and provide sufficient flexibility for subject-specific modeling. This complexity challenges parameter inference and approximations are inevitable. We propose a method for approximate maximum-likelihood parameter estimation in multivariate time-inhomogeneous diffusions, where subject-specific flexibility is accounted for by incorporation of...

Topics: Statistics Theory, Statistics, Methodology, Mathematics

Source: http://arxiv.org/abs/1701.08284