corpus_id stringlengths 3 9 | arxiv_id stringlengths 9 16 | date stringdate 1989-10-26 00:00:00 2024-09-30 00:00:00 | title stringlengths 4 240 | abstract stringlengths 3 3.15k | categories listlengths 1 10 | topics listlengths 0 15 ⌀ | roles listlengths 1 4 | key_references listlengths 0 10 ⌀ | authors listlengths 1 5.28k ⌀ | citation_trajectory listlengths 14 26 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
29349737 | 0804.0417 | 2008-04-02 | Prominence and control: The weighted rich-club effect | Complex systems are often characterized by large-scale hierarchical organizations. Whether the prominent elements, at the top of the hierarchy, share and control resources or avoid one another lies at the heart of a system's global organization and functioning. Inspired by network perspectives, we propose a new general... | [
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2679666 | 0804.0599 | 2008-04-03 | Symmetry Breaking for Maximum Satisfiability | Symmetries are intrinsic to many combinatorial problems including Boolean Satisfiability (SAT) and Constraint Programming (CP). In SAT, the identification of symmetry breaking predicates (SBPs) is a well-known, often effective, technique for solving hard problems. The identification of SBPs in SAT has been the subject ... | [
"cs.AI",
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"author_id": "i lynce_1",
"name": "Inês Lynce",
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1294949 | 0804.0561 | 2008-04-03 | Realistic Haptic Rendering of Interacting Deformable Objects in Virtual Environments | A new computer haptics algorithm to be used in general interactive manipulations of deformable virtual objects is presented. In multimodal interactive simulations, haptic feedback computation often comes from contact forces. Subsequently, the fidelity of haptic rendering depends significantly on contact space modeling.... | [
"cs.GR"
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16646834 | 0804.0497 | 2008-04-03 | Multistable Solitons in Higher-Dimensional Cubic-Quintic Nonlinear Schroedinger Lattices | We study the existence, stability, and mobility of fundamental discrete solitons in two- and three-dimensional nonlinear Schroedinger lattices with a combination of cubic self-focusing and quintic self-defocusing onsite nonlinearities. Several species of stationary solutions are constructed, and bifurcations linking th... | [
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115166562 | 0804.0481 | 2008-04-03 | Dimension expanders | We show that there exists $k \in \bbn$ and $0 < \e \in\bbr$ such that for every field $F$ of characteristic zero and for every $n \in \bbn$, there exists explicitly given linear transformations $T_1,..., T_k: F^n \to F^n$ satisfying the following: For every subspace $W$ of $F^n$ of dimension less or equal $\frac n2$, $... | [
"math.GR"
] | null | [
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124346613 | 0804.0510 | 2008-04-03 | Nonparametric Statistical Inference for Ergodic Processes | In this work a method for statistical analysis of time series is proposed, which is used to obtain solutions to some classical problems of mathematical statistics under the only assumption that the process generating the data is stationary ergodic. Namely, three problems are considered: goodness-of-fit (or identity) te... | [
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2298 | 0804.0506 | 2008-04-03 | Distributed Consensus over Wireless Sensor Networks Affected by Multipath Fading | The design of sensor networks capable of reaching a consensus on a globally optimal decision test, without the need for a fusion center, is a problem that has received considerable attention in the last years. Many consensus algorithms have been proposed, with convergence conditions depending on the graph describing th... | [
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"author_id": "g scutari_1",
"name": "Gesualdo Scutari",
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"author_id": "s barbarossa_1",
"name": "Sergio Barbarossa",
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6995297 | 0804.0703 | 2008-04-04 | High-dimensional generalized linear models and the lasso | We consider high-dimensional generalized linear models with Lipschitz loss functions, and prove a nonasymptotic oracle inequality for the empirical risk minimizer with Lasso penalty. The penalty is based on the coefficients in the linear predictor, after normalization with the empirical norm. The examples include logis... | [
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2583290 | 0804.0673 | 2008-04-04 | Generalizing Hartogs' Trichotomy Theorem | A celebrated argument of F. Hartogs (1915) deduces the Axiom of Choice from the hypothesis of comparability for any pair of cardinals. We show how each of a sequence of seemingly much weaker hypotheses suffices. Fixing a finite number $k>1$, the Axiom of Choice follows if merely any family of $k$ cardinals contains at ... | [
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"author_id": "d feldman_3",
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"author_id": "m orhon_0",
"name": "Mehmet Orhon",
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... | null |
14017392 | 0804.0693 | 2008-04-04 | Asymptotic properties of bridge estimators in sparse high-dimensional regression models | We study the asymptotic properties of bridge estimators in sparse, high-dimensional, linear regression models when the number of covariates may increase to infinity with the sample size. We are particularly interested in the use of bridge estimators to distinguish between covariates whose coefficients are zero and cova... | [
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16112685 | 0804.0622 | 2008-04-04 | A Weakly Coupled Ultraviolet Completion of the Littlest Higgs with T-parity | We construct a weakly coupled, renormalizable ultraviolet completion of the Littlest Higgs model with T-parity (LHT), based on an SU(5)xSU(2)xU(1) gauge theory with a discrete Z_2 symmetry. Our model reproduces the complete structure of the LHT below the 10 TeV scale, including the collective symmetry breaking mechanis... | [
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88517984 | 0804.0678 | 2008-04-04 | Consistency of spectral clustering | Consistency is a key property of all statistical procedures analyzing randomly sampled data. Surprisingly, despite decades of work, little is known about consistency of most clustering algorithms. In this paper we investigate consistency of the popular family of spectral clustering algorithms, which clusters the data w... | [
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"name": "Mikhail Belkin",
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11239660 | 0804.0800 | 2008-04-04 | The LSC Glitch Group : Monitoring Noise Transients during the fifth LIGO Science Run | The LIGO Scientific Collaboration (LSC) glitch group is part of the LIGO detector characterization effort. It consists of data analysts and detector experts who, during and after science runs, collaborate for a better understanding of noise transients in the detectors. Goals of the glitch group during the fifth LIGO sc... | [
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"author_id": "l cadonati_1",
"name": "Laura Cadonati",
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1066473 | 0804.0686 | 2008-04-04 | Discrimination of two channels by adaptive methods and its application to quantum system | The optimal exponential error rate for adaptive discrimination of two channels is discussed. In this problem, adaptive choice of input signal is allowed. This problem is discussed in various settings. It is proved that adaptive choice does not improve the exponential error rate in these settings. These results are appl... | [
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219707085 | 0804.0676 | 2008-04-04 | Second-order asymptotic expansion for a non-synchronous covariation estimator | In this paper, we consider the problem of estimating the covariation of two diffusion processes when observations are subject to non-synchronicity. Building on recent papers \cite{Hay-Yos03, Hay-Yos04}, we derive second-order asymptotic expansions for the distribution of the Hayashi-Yoshida estimator in a fairly genera... | [
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{
"author_id": "a dalalyan_1",
"name": "Arnak [\"S.\"] Dalalyan",
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"author_id": "n yoshida_2",
"name": "Nakahiro Yoshida",
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9095779 | 0804.0713 | 2008-04-04 | On deconvolution with repeated measurements | In a large class of statistical inverse problems it is necessary to suppose that the transformation that is inverted is known. Although, in many applications, it is unrealistic to make this assumption, the problem is often insoluble without it. However, if additional data are available, then it is possible to estimate ... | [
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] | null | [
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8307765 | 0804.0758 | 2008-04-04 | Closed-form likelihood expansions for multivariate diffusions | This paper provides closed-form expansions for the log-likelihood function of multivariate diffusions sampled at discrete time intervals. The coefficients of the expansion are calculated explicitly by exploiting the special structure afforded by the diffusion model. Examples of interest in financial statistics and Mont... | [
"math.ST",
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] | null | [
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3466278 | 0804.0735 | 2008-04-04 | Generalized Traveling Salesman Problem Reduction Algorithms | The generalized traveling salesman problem (GTSP) is an extension of the well-known traveling salesman problem. In GTSP, we are given a partition of cities into groups and we are required to find a minimum length tour that includes exactly one city from each group. The aim of this paper is to present a problem reductio... | [
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{
"author_id": "g gutin_1",
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"author_id": "d karapetyan_1",
"name": "Daniel Karapetyan",
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9282476 | 0804.0819 | 2008-04-04 | Kalman Filtered Compressed Sensing | We consider the problem of reconstructing time sequences of spatially sparse signals (with unknown and time-varying sparsity patterns) from a limited number of linear "incoherent" measurements, in real-time. The signals are sparse in some transform domain referred to as the sparsity basis. For a single spatial signal, ... | [
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"name": "Namrata Vaswani",
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] | null |
5787669 | 0804.0934 | 2008-04-06 | Analysis of Discrete and Hybrid Stochastic Systems by Nonlinear Contraction Theory | We investigate the stability properties of discrete and hybrid stochastic nonlinear dynamical systems. More precisely, we extend the stochastic contraction theorems (which were formulated for continuous systems) to the case of discrete and hybrid resetting systems. In particular, we show that the mean square distance b... | [
"math.OC",
"math.PR"
] | null | [
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] | null | null | null |
8779882 | 0804.0957 | 2008-04-06 | Derandomizing the Isolation Lemma and Lower Bounds for Circuit Size | The isolation lemma of Mulmuley et al \cite{MVV87} is an important tool in the design of randomized algorithms and has played an important role in several nontrivial complexity upper bounds. On the other hand, polynomial identity testing is a well-studied algorithmic problem with efficient randomized algorithms and the... | [
"cs.CC"
] | null | [
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{
"author_id": "v arvind_2",
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{
"author_id": "p mukhopadhyay_3",
"name": "Partha Mukhopadhyay",
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13254982 | 0804.0932 | 2008-04-06 | Stochastic evolution equations in UMD Banach spaces | We discuss existence, uniqueness, and space-time H\"older regularity for solutions of the parabolic stochastic evolution equation dU(t) = (AU(t) + F(t,U(t))) dt + B(t,U(t)) dW_H(t), t\in [0,\Tend], U(0) = u_0, where $A$ generates an analytic $C_0$-semigroup on a UMD Banach space $E$ and $W_H$ is a cylindrical Brownian ... | [
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] | null | [
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29663 | 0804.1049 | 2008-04-07 | XMM-Newton observations of the supernova remnant IC 443: II. evidence of stellar ejecta in the inner regions | We investigate the spatial distribution of the physical and chemical properties of the hot X-ray emitting plasma of the supernova remnant IC 443, in order to get important constraints on its ionization stage, on the progenitor supernova explosion, on the age of the remnant, and its physical association with a close pul... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
53457264 | 0804.1104 | 2008-04-07 | Sensitivity of complex networks measurements | Complex networks obtained from the real-world networks are often characterized by incompleteness and noise, consequences of limited sampling as well as artifacts in the acquisition process. Because the characterization, analysis and modeling of complex systems underlain by complex networks are critically affected by th... | [
"physics.soc-ph",
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{
"corpus_id": "6370982",
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{
"author_id": "p boas_1",
"name": "Paulino [\"Ribeiro\",\"Villas\"] Boas",
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{
"author_id": "f rodrigues_1",
"name": "Francisco [\"Aparecido\"] Rodrigues",
"publication_history": null,
... | null |
12963714 | 0804.1115 | 2008-04-07 | Adaptive Dynamics of Realistic Small-World Networks | Continuing in the steps of Jon Kleinberg's and others celebrated work on decentralized search in small-world networks, we conduct an experimental analysis of a dynamic algorithm that produces small-world networks. We find that the algorithm adapts robustly to a wide variety of situations in realistic geographic network... | [
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"name": "Oskar Sandberg",
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... | null |
15824973 | 0804.0989 | 2008-04-07 | A geometric Newton method for Oja's vector field | Newton's method for solving the matrix equation $F(X)\equiv AX-XX^TAX=0$ runs up against the fact that its zeros are not isolated. This is due to a symmetry of $F$ by the action of the orthogonal group. We show how differential-geometric techniques can be exploited to remove this symmetry and obtain a ``geometric'' New... | [
"math.NA"
] | null | [
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{
"author_id": "p absil_1",
"name": "Pierre-Antoine Absil",
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"author_id": "m ishteva_0",
"name": "Mariya Ishteva",
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6479753 | 0804.1026 | 2008-04-07 | Testing for Homogeneity with Kernel Fisher Discriminant Analysis | We propose to investigate test statistics for testing homogeneity in reproducing kernel Hilbert spaces. Asymptotic null distributions under null hypothesis are derived, and consistency against fixed and local alternatives is assessed. Finally, experimental evidence of the performance of the proposed approach on both ar... | [
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{
"author_id": "z harchaoui_1",
"name": "Zaïd Harchaoui",
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"author_id": "f bach_1",
"name": "Francis [\"R.\"] Bach",
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14180631 | 0804.1143 | 2008-04-07 | Sliced Inverse Moment Regression Using Weighted Chi-Squared Tests for Dimension Reduction | We propose a new method for dimension reduction in regression using the first two inverse moments. We develop corresponding weighted chi-squared tests for the dimension of the regression. The proposed method considers linear combinations of Sliced Inverse Regression (SIR) and the method using a new candidate matrix whi... | [
"stat.ME",
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"stat.TH"
] | null | [
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952238 | 0804.1117 | 2008-04-07 | Network Beamforming Using Relays with Perfect Channel Information | This paper is on beamforming in wireless relay networks with perfect channel information at relays, the receiver, and the transmitter if there is a direct link between the transmitter and receiver. It is assumed that every node in the network has its own power constraint. A two-step amplify-and-forward protocol is used... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2788753 | 0804.1172 | 2008-04-07 | Transceiver Design with Low-Precision Analog-to-Digital Conversion : An Information-Theoretic Perspective | Modern communication receiver architectures center around digital signal processing (DSP), with the bulk of the receiver processing being performed on digital signals obtained after analog-to-digital conversion (ADC). In this paper, we explore Shannon-theoretic performance limits when ADC precision is drastically reduc... | [
"cs.IT",
"math.IT"
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{
"author_id": "j singh_13",
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"author_id": "o dabeer_1",
"name": "Onkar Dabeer",
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... | null |
119251631 | 0804.1269 | 2008-04-08 | A generalized voter model on complex networks | We study a generalization of the voter model on complex networks, focusing on the scaling of mean exit time. Previous work has defined the voter model in terms of an initially chosen node and a randomly chosen neighbor, which makes it difficult to disentangle the effects of the stochastic process itself relative to the... | [
"cond-mat.stat-mech",
"physics.soc-ph"
] | null | [
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609778 | 0804.1302 | 2008-04-08 | Bolasso: model consistent Lasso estimation through the bootstrap | We consider the least-square linear regression problem with regularization by the l1-norm, a problem usually referred to as the Lasso. In this paper, we present a detailed asymptotic analysis of model consistency of the Lasso. For various decays of the regularization parameter, we compute asymptotic equivalents of the ... | [
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"stat.TH"
] | null | [
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13739269 | 0804.1270 | 2008-04-08 | The quest for rings on bipolar scales | We consider the interval $]{-1},1[$ and intend to endow it with an algebraic structure like a ring. The motivation lies in decision making, where scales that are symmetric w.r.t. 0 are needed in order to represent a kind of symmetry in the behaviour of the decision maker. A former proposal due to Grabisch was based on ... | [
"cs.DM",
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{
"author_id": "m grabisch_0",
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"author_id": "b baets_1",
"name": "Bernard [\"De\"] Baets",
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1113792 | 0804.1202 | 2008-04-08 | A Preliminary Work on Evolutionary Identification of Protein Variants and New Proteins on Grids | Protein identification is one of the major task of Proteomics researchers. Protein identification could be resumed by searching the best match between an experimental mass spectrum and proteins from a database. Nevertheless this approach can not be used to identify new proteins or protein variants. In this paper an evo... | [
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{
"author_id": "j boisson_1",
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"author_id": "l vermeulen-jourdan_1",
"name": "Laetitia Vermeulen-Jourdan",
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1436965 | 0804.1304 | 2008-04-08 | Weak approximation of stochastic partial differential equations: the non linear case | We study the error of the Euler scheme applied to a stochastic partial differential equation. We prove that as it is often the case, the weak order of convergence is twice the strong order. A key ingredient in our proof is Malliavin calculus which enables us to get rid of the irregular terms of the error. We apply our ... | [
"math.NA",
"math.PR"
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14229888 | 0804.1180 | 2008-04-08 | The debeamed luminosity, sychrotron peak frequency and black hole mass of BL Lac objects | We estimate the intrinsic luminosities and synchrotron peak frequency using the derived Doppler factor for a sample of 170 BL Lac objects, of which the synchrotron peak frequency are derived by fitting the SED constructed with the collected multi-band data from literatures. We find that the debeamed radio and optical c... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17970508 | 0804.1247 | 2008-04-08 | Quartic quantum theory: an extension of the standard quantum mechanics | We propose an extended quantum theory, in which the number K of parameters necessary to characterize a quantum state behaves as fourth power of the number N of distinguishable states. As the simplex of classical N-point probability distributions can be embedded inside a higher dimensional convex body of mixed quantum s... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119271353 | 0804.1383 | 2008-04-09 | Main Belt Binary Asteroidal Systems With Circular Mutual Orbits | In 2003, we initiated a long-term adaptive optics campaign to study the orbit of various main-belt asteroidal systems. Here we present a consistent solution for the mutual orbits of four binary systems: 22 Kalliope, 45 Eugenia, 107 Camilla and 762 Pulcova. With the exception of 45 Eugenia, we did not detect any additio... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15701830 | 0804.1386 | 2008-04-09 | HN Peg B: A Test of Models of the L to T Dwarf Transition | Luhman and collaborators recently discovered an early-T dwarf companion to the G0 dwarf star HN Peg, using Spitzer Infrared Array Camera (IRAC) images. Companionship was established on the basis of the common proper motion inferred from 1998 Two Micron All Sky Survey images and the 2004 IRAC images. In this paper we pr... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7284220 | 0804.1571 | 2008-04-09 | Quantum Simulations of Classical Annealing Processes | We describe a quantum algorithm that solves combinatorial optimization problems by quantum simulation of a classical simulated annealing process. Our algorithm exploits quantum walks and the quantum Zeno effect induced by evolution randomization. It requires order $1/\sqrt{\delta}$ steps to find an optimal solution wit... | [
"quant-ph"
] | null | [
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{
"author_id": "r somma_1",
"name": "Rolando [\"D.\"] Somma",
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9711439 | 0804.1395 | 2008-04-09 | A Strong Tits Alternative | We show that for every integer $d$, there is a constant $N(d)$ such that if $K$ is any field and $F$ is a finite subset of $GL_d(K)$, which generates a non amenable subgroup, then $F^{N(d)}$ contains two elements, which freely generate a non abelian free subgroup. This improves the original statement of the Tits altern... | [
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] | null | null | null |
14408891 | 0804.1354 | 2008-04-09 | OGLE-2005-BLG-071Lb, the Most Massive M-Dwarf Planetary Companion? | We combine all available information to constrain the nature of OGLE-2005-BLG-071Lb, the second planet discovered by microlensing and the first in a high-magnification event. These include photometric and astrometric measurements from Hubble Space Telescope, as well as constraints from higher order effects extracted fr... | [
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395 | 0804.1607 | 2008-04-09 | Distributed and Recursive Parameter Estimation in Parametrized Linear State-Space Models | We consider a network of sensors deployed to sense a spatio-temporal field and estimate a parameter of interest. We are interested in the case where the temporal process sensed by each sensor can be modeled as a state-space process that is perturbed by random noise and parametrized by an unknown parameter. To estimate ... | [
"cs.DC"
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"name": "Venugopal [\"V.\"] Veeravalli",
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... | null |
5781858 | 0908.2397 | 2008-04-09 | Interference Assisted Secret Communication | Wireless communication is susceptible to eavesdropping attacks because of its broadcast nature. This paper illustrates how interference can be used to counter eavesdropping and assist secrecy. In particular, a wire-tap channel with a helping interferer (WT-HI) is considered. Here, a transmitter sends a confidential mes... | [
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"cs.CR",
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] | null | null | null |
119244052 | 0804.1385 | 2008-04-09 | Main Belt Binary Asteroidal Systems With Eccentric Mutual Orbits | Using 8m-10m class telescopes and their Adaptive Optics (AO) systems, we conducted a long-term adaptive optics campaign initiated in 2003 focusing on four binary asteroid systems: (130) Elektra, (283) Emma, (379) Huenna, and (3749) Balam. The analysis of these data confirms the presence of their asteroidal satellite. W... | [
"astro-ph"
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] | null | null | null |
3728007 | 0804.1748 | 2008-04-10 | Noncoherent Capacity of Underspread Fading Channels | We derive bounds on the noncoherent capacity of wide-sense stationary uncorrelated scattering (WSSUS) channels that are selective both in time and frequency, and are underspread, i.e., the product of the channel's delay spread and Doppler spread is small. For input signals that are peak constrained in time and frequenc... | [
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"name": "Ulrich [\"G.\"] Schuster",
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3785498 | 0804.1773 | 2008-04-10 | One-loop Partition Functions of 3D Gravity | We consider the one-loop partition function of free quantum field theory in locally Anti-de Sitter space-times. In three dimensions, the one loop determinants for scalar, gauge and graviton excitations are computed explicitly using heat kernel techniques. We obtain precisely the result anticipated by Brown and Henneaux... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8599429 | 0804.1721 | 2008-04-10 | Robust control of a bimorph mirror for adaptive optics system | We apply robust control technics to an adaptive optics system including a dynamic model of the deformable mirror. The dynamic model of the mirror is a modification of the usual plate equation. We propose also a state-space approach to model the turbulent phase. A continuous time control of our model is suggested taking... | [
"math.AP"
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{
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"name": "Christophe Prieur",
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14911102 | 0804.1727 | 2008-04-10 | Multiwavelength analysis of the intriguing GRB 061126: the reverse shock scenario and magnetization | We present a detailed study of the prompt and afterglow emission from Swift GRB 061126 using BAT, XRT, UVOT data and multi-color optical imaging from ten ground-based telescopes. GRB 061126 was a long burst (T_90=191 s) with four overlapping peaks in its gamma-ray light curve. The X-ray afterglow, observed from 26 min ... | [
"astro-ph"
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4427739 | 0804.1621 | 2008-04-10 | Direct observation of Anderson localization of matter-waves in a controlled disorder | We report the observation of exponential localization of a Bose-Einstein condensate (BEC) released into a one-dimensional waveguide in the presence of a controlled disorder created by laser speckle . We operate in a regime allowing AL: i) weak disorder such that localization results from many quantum reflections of sma... | [
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"cond-mat.other"
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] | null | null | null |
118455385 | 0804.1686 | 2008-04-10 | On the origin of the particles in black hole evaporation | We present an analytic derivation of Hawking radiation for an arbitrary (spatial) dispersion relation $\omega(k)$ as a model for ultra-high energy deviations from general covariance. It turns out that the Hawking temperature is proportional to the product of the group $d\omega/dk$ and phase $\omega/k$ velocities evalua... | [
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14555398 | 0804.1724 | 2008-04-10 | Information Acquisition and Exploitation in Multichannel Wireless Networks | A wireless system with multiple channels is considered, where each channel has several transmission states. A user learns about the instantaneous state of an available channel by transmitting a control packet in it. Since probing all channels consumes significant energy and time, a user needs to determine what and how ... | [
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"name": "Kamesh Munagala",
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... | null |
8386373 | 0804.1697 | 2008-04-10 | Lower Bounds on the Rate-Distortion Function of Individual LDGM Codes | We consider lossy compression of a binary symmetric source by means of a low-density generator-matrix code. We derive two lower bounds on the rate distortion function which are valid for any low-density generator-matrix code with a given node degree distribution L(x) on the set of generators and for any encoding algori... | [
"cs.IT",
"math.IT"
] | null | [
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187200 | 0804.1774 | 2008-04-10 | Inverse Compton Origin of the Hard X-Ray and Soft Gamma-Ray Emission from the Galactic Ridge | A recent re-determination of the non-thermal component of the hard X-ray to soft gamma-ray emission from the Galactic ridge, using the SPI instrument on the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) Observatory, is shown to be well reproduced as inverse-Compton emission from the interstellar medium. Bo... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119159677 | 0804.1643 | 2008-04-10 | Employing feedback in adiabatic quantum dynamics | We study quantum adiabatic dynamics, where the slowly moving field is influenced by system's state (feedback). The information for the feedback is gained from non-disturbating measurements done on an ensemble of identical non-interacting systems. The situation without feedback is governed by the adiabatic theorem: adia... | [
"quant-ph"
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{
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{
"author_id": "g mahler_4",
"name": "Guunter Mahler",
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5684459 | 0804.1888 | 2008-04-11 | Quantum circuits for strongly correlated quantum systems | In recent years, we have witnessed an explosion of experimental tools by which quantum systems can be manipulated in a controlled and coherent way. One of the most important goals now is to build quantum simulators, which would open up the possibility of exciting experiments probing various theories in regimes that are... | [
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5999697 | 0804.1946 | 2008-04-11 | On the Dynamical Stability of the Solar System | A long-term numerical integration of the classical Newtonian approximation to the planetary orbital motions of the full Solar System (sun + 8 planets), spanning 20 Gyr, was performed. The results showed no severe instability arising over this time interval. Subsequently, utilizing a bifurcation method described by Jacq... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15461094 | 0804.1889 | 2008-04-11 | Multivariate normal approximation using Stein's method and Malliavin calculus | We combine Stein's method with Malliavin calculus in order to obtain explicit bounds in the multidimensional normal approximation (in the Wasserstein distance) of functionals of Gaussian fields. Our results generalize and refine the main findings by Peccati and Tudor (2005), Nualart and Ortiz-Latorre (2007), Peccati (2... | [
"math.PR"
] | null | [
"target.key_reference"
] | null | null | null |
18293300 | 0804.1965 | 2008-04-11 | A calibration of the relation between the abundance of close galaxy pairs and the rate of galaxy mergers | Estimates of galaxy merger rates based on counts of close pairs typically assume that most of the observed systems will merge within a few hundred Myr (for projected pair separations <25 kpc/h). Here we investigate these assumptions using virtual galaxy catalogues derived from the Millennium Simulation, a very large N-... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7796944 | 0804.1932 | 2008-04-11 | A complexity dichotomy for partition functions with mixed signs | Partition functions, also known as homomorphism functions, form a rich family of graph invariants that contain combinatorial invariants such as the number of k-colourings or the number of independent sets of a graph and also the partition functions of certain "spin glass" models of statistical physics such as the Ising... | [
"cs.CC",
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] | null | [
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{
"author_id": "l goldberg_1",
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{
"author_id": "m grohe_1",
"name": "Martin Grohe",
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2057 | 0804.1839 | 2008-04-11 | Necessary and Sufficient Conditions on Sparsity Pattern Recovery | The problem of detecting the sparsity pattern of a k-sparse vector in R^n from m random noisy measurements is of interest in many areas such as system identification, denoising, pattern recognition, and compressed sensing. This paper addresses the scaling of the number of measurements m, with signal dimension n and spa... | [
"cs.IT",
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"author_id": "s rangan_1",
"name": "Sundeep Rangan",
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104469 | 0804.1840 | 2008-04-11 | Selfish Distributed Compression over Networks: Correlation Induces Anarchy | We consider the min-cost multicast problem (under network coding) with multiple correlated sources where each terminal wants to losslessly reconstruct all the sources. We study the inefficiency brought forth by the selfish behavior of the terminals in this scenario by modeling it as a noncooperative game among the term... | [
"cs.GT",
"cs.IT",
"math.IT"
] | null | [
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{
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{
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"name": "Vwani [\"P.\"] Roychowdhury",
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14516439 | 0804.1985 | 2008-04-12 | Emulsion sheet doublets as interface trackers for the OPERA experiment | New methods for efficient and unambiguous interconnection between electronic counters and target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment, that aims at detecting oscillations between mu neutrino and tau neutrino in the CNGS neutrino beam, is reporte... | [
"physics.ins-det"
] | null | [
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] | [] | [
{
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{
"author_id": "s aoki_3",
"name": "Shigeki Aoki",
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... | null |
8457445 | 0804.2058 | 2008-04-13 | Physical Layer Network Coding Over Finite And Infinite Fields | Direct application of network coding at the physical layer - physical layer network coding (PNC) - is a promising technique for two-way relay wireless networks. In a two-way relay network, relay nodes are used to relay two-way information flows between pairs of end nodes. This paper proposes a precise definition for PN... | [
"cs.NI"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "3264318",
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{
"author_id": "s zhang_49",
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{
"author_id": "s liew_1",
"name": "Soung [\"Chang\"] Liew",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
424819 | 0804.2097 | 2008-04-13 | Optimal Mechansim Design and Money Burning | Mechanism design is now a standard tool in computer science for aligning the incentives of self-interested agents with the objectives of a system designer. There is, however, a fundamental disconnect between the traditional application domains of mechanism design (such as auctions) and those arising in computer science... | [
"cs.GT",
"cs.DS"
] | null | [
"target.author.publication_history",
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"target.key_reference"
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{
"author_id": "j hartline_1",
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{
"author_id": "t roughgarden_1",
"name": "Tim Roughgarden",
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119208245 | 0804.2170 | 2008-04-14 | Quantum critical dynamics of a S = 1/2 antiferromagnetic Heisenberg chain studied by 13C-NMR spectroscopy | We present a 13C-NMR study of the magnetic field driven transition to complete polarization of the S=1/2 antiferromagnetic Heisenberg chain system copper pyrazine dinitrate Cu(C_4H_4N_2)(NO_3)_2 (CuPzN). The static local magnetization as well as the low-frequency spin dynamics, probed via the nuclear spin-lattice relax... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "h kuehne_2",
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{
"author_id": "h klauss_1",
"name": "H.-H. Klauss",
"publication_history": null,
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"num_papers": null,... | null |
115171437 | 0804.2242 | 2008-04-14 | Good moduli spaces for Artin stacks | We develop the theory of associating moduli spaces with nice geometric properties to arbitrary Artin stacks generalizing Mumford's geometric invariant theory and tame stacks. | [
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118558357 | 0804.2279 | 2008-04-14 | Large-N estimates of universal amplitudes of the CP^{N-1} theory and comparison with the JQ model | We present computations of certain finite-size scaling functions and universal amplitude ratios in the large-N limit of the CP^{N-1} field theory. We pay particular attention to the uniform susceptibility, the spin stiffness and the specific heat. Field theoretic arguments have shown that the long-wavelength descriptio... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r kaul_2",
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{
"author_id": "r melko_1",
"name": "Roger [\"G.\"] Melko",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
437354 | 0804.3010 | 2008-04-14 | Generalized SURE for Exponential Families: Applications to Regularization | Stein's unbiased risk estimate (SURE) was proposed by Stein for the independent, identically distributed (iid) Gaussian model in order to derive estimates that dominate least-squares (LS). In recent years, the SURE criterion has been employed in a variety of denoising problems for choosing regularization parameters tha... | [
"stat.ME",
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6566423 | 0804.2231 | 2008-04-14 | Random changes of flow topology in two dimensional and geophysical turbulence | We study the two dimensional (2D) stochastic Navier Stokes (SNS) equations in the inertial limit of weak forcing and dissipation. The stationary measure is concentrated close to steady solutions of the 2D Euler equation. For such inertial flows, we prove that bifurcations in the flow topology occur either by changing t... | [
"nlin.CD",
"cond-mat.stat-mech",
"physics.class-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118139640 | 0804.2439 | 2008-04-15 | Normal modes analysis of the microscopic dynamics in hard discs | We estimate numerically the normal modes of the free energy in a glass of hard discs. We observe that, near the glass transition or after a rapid quench deep in the glass phase, the density of states (i) is characteristic of a marginally stable structure, in particular it di splays a frequency scale $\omega^*\sim p^{1/... | [
"cond-mat.soft",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "c brito_1",
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{
"author_id": "m wyart_1",
"name": "Matthieu Wyart",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
19483783 | 0804.2384 | 2008-04-15 | Heralded generation of multiphoton entanglement | We present a scheme, based only on linear optics and standard photon detection, that allows to generate heralded multiphoton entangled states of arbitrary photon number from spontaneous parametric downconversion (PDC) in the weak interaction regime. The scheme also works in the strong interaction regime, i.e., for the ... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14393671 | 0804.2316 | 2008-04-15 | Determining membrane permeability of giant phospholipid vesicles from a series of videomicroscopy images | A technique for determining the permeability of a phospholipid membrane on a single giant unilamellar vesicle (GUV) is described, which complements the existing methods utilizing either a planar black lipid membrane or sub-micrometre-sized liposomes. A single GUV is transferred using a micropipette from a solution of a... | [
"physics.ins-det",
"physics.bio-ph",
"physics.chem-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6176569 | 0804.2373 | 2008-04-15 | Fast Conversion Algorithms for Orthogonal Polynomials | We discuss efficient conversion algorithms for orthogonal polynomials. We describe a known conversion algorithm from an arbitrary orthogonal basis to the monomial basis, and deduce a new algorithm of the same complexity for the converse operation. | [
"cs.SC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1456832 | 0804.2441 | 2008-04-15 | Topological identification in networks of dynamical systems | The paper deals with the problem of reconstructing the topological structure of a network of dynamical systems. A distance function is defined in order to evaluate the "closeness" of two processes and a few useful mathematical properties are derived. Theoretical results to guarantee the correctness of the identificatio... | [
"nlin.CD",
"q-fin.ST"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14085824 | 0804.2356 | 2008-04-15 | Continuous crystals and Duistermaat-Heckman measure for Coxeter groups | We introduce a notion of continuous crystal analogous, for general Coxeter groups, to the combinatorial crystals introduced by Kashiwara in representation theory of Lie algebras. We use a generalization of the Littelmann path model to show the existence of the crystals, and study an associated Duistermaat-Heckman measu... | [
"math.RT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15759857 | 0804.2413 | 2008-04-15 | Bayesian Inference on Mixtures of Distributions | This survey covers state-of-the-art Bayesian techniques for the estimation of mixtures. It complements the earlier Marin, Mengersen and Robert (2005) by studying new types of distributions, the multinomial, latent class and t distributions. It also exhibits closed form solutions for Bayesian inference in some discrete ... | [
"stat.CO",
"stat.ME"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "k lee_27",
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},
{
"author_id": "j marin_1",
"name": "Jean-Michel Marin",
"publication_history": null,
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"num_papers": null,
"nu... | null |
14022595 | 0804.2486 | 2008-04-16 | Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology | We use a combination of three large N-body simulations to investigate the dependence of dark matter halo concentrations on halo mass and redshift in the WMAP year 5 cosmology. The median relation between concentration and mass is adequately described by a power-law for halo masses in the range 10^11 - 10^15 Msol/h and ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
34681364 | 0804.2590 | 2008-04-16 | Universal cumulants of the current in diffusive systems on a ring | We calculate exactly the first cumulants of the integrated current and of the activity (which is the total number of changes of configurations) of the symmetric simple exclusion process (SSEP) on a ring with periodic boundary conditions. Our results indicate that for large system sizes the large deviation functions of ... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6856858 | 0804.2631 | 2008-04-16 | Reionization constraints from five-year WMAP data | We study the constraints on reionization from five years of WMAP data, parametrizing the evolution of the average fraction of ionized hydrogen with principal components that provide a complete basis for describing the effects of reionization on large-scale E-mode polarization. Using Markov Chain Monte Carlo methods, we... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6706698 | 0804.2543 | 2008-04-16 | On the Numerical Evaluation of Fredholm Determinants | Some significant quantities in mathematics and physics are most naturally expressed as the Fredholm determinant of an integral operator, most notably many of the distribution functions in random matrix theory. Though their numerical values are of interest, there is no systematic numerical treatment of Fredholm determin... | [
"math.NA",
"math.FA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17148745 | 0804.2681 | 2008-04-16 | Convergence and Stability of the Inverse Scattering Series for Diffuse Waves | We analyze the inverse scattering series for diffuse waves in random media. In previous work the inverse series was used to develop fast, direct image reconstruction algorithms in optical tomography. Here we characterize the convergence, stability and approximation error of the series | [
"math.AP",
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3683346 | 0804.2691 | 2008-04-16 | Optimal Dynamical Decoherence Control of a Qubit | A theory of dynamical control by modulation for optimal decoherence reduction is developed. It is based on the non-Markovian Euler-Lagrange equation for the energy-constrained field that minimizes the average dephasing rate of a qubit for any given dephasing spectrum. | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118503008 | 0804.2882 | 2008-04-17 | Dynamics in a coupled-cavity array | The dynamics of a system composed of two coupled optical cavities, each containing a single two-level atom, is studied over a wide range of detuning and coupling values. A description of the field in terms of delocalized modes reveals that the detuning between the atoms and these modes is controlled by the coupling bet... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10139352 | 0804.2831 | 2008-04-17 | Decentralized Knowledge and Learning in Strategic Multi-user Communication | Please see the content of this report. | [
"cs.GT",
"cs.NI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "y su_75",
"name": "Yi Su",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m schaar_1",
"name": "Mihaela [\"van\",\"der\"] Schaar",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
16843545 | 0804.2853 | 2008-04-17 | Radio source calibration for the VSA and other CMB instruments at around 30 GHz | Accurate calibration of data is essential for the current generation of CMB experiments. Using data from the Very Small Array (VSA), we describe procedures which will lead to an accuracy of 1 percent or better for experiments such as the VSA and CBI. Particular attention is paid to the stability of the receiver systems... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119096724 | 0804.2775 | 2008-04-17 | Cosmological Scaling Solutions with Tachyon:Modified Gravity Model | Modifying the Einstein's gravity at large distance scales is one of the interesting proposals to explain the late time acceleration of the universe. In this paper, we analyse scaling solutions in modified gravity models where the universe is sourced by a background matter fluid together with a tachyon type scalar field... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a sen_2",
"name": "Anjan [\"A\"] Sen",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "n devi_1",
"name": "N [\"Chandrachani\"] Devi",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
25731435 | 0804.2799 | 2008-04-17 | Measurement of the polarization of the $\Upsilon(1S)$ and $\Upsilon(2S)$ states in $p\bar{p}$ collisions at $\sqrt{s}=$1.96 TeV | We present a study of the polarization of the $\Upsilon(1S)$ and $\Upsilon(2S)$ states using a $1.3 $ fb$^{-1}$ data sample collected by the D0 experiment in 2002--2006 during Run II of the Fermilab Tevatron Collider. We measure the polarization parameter $\alpha=(\sigma_{T}-2\sigma_{L})/(\sigma_{T}+2\sigma_{L})$, wher... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v abazov_1",
"name": "Victor [\"Mukhamedovich\"] Abazov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "b abbott_2",
"name": "B. Abbott",
"publication_history": null,
"h_index": null,
"num_pa... | null |
44746768 | 0804.2788 | 2008-04-17 | Universal dependence on disorder of 2D randomly diluted and random-bond +-J Ising models | We consider the two-dimensional randomly site diluted Ising model and the random-bond +-J Ising model (also called Edwards-Anderson model), and study their critical behavior at the paramagnetic-ferromagnetic transition. The critical behavior of thermodynamic quantities can be derived from a set of renormalization-group... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17799483 | 0804.2713 | 2008-04-17 | Analytic calculation of quasi-normal modes | We discuss the analytic calculation of quasi-normal modes of various types of perturbations of black holes both in asymptotically flat and anti-de Sitter spaces. We obtain asymptotic expressions and also show how corrections can be calculated perturbatively. We pay special attention to low-frequency modes in anti-de Si... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "119424746",
"num_citations": null
},
{
"corpus_id": "119540409",
"num_citations": null
},
{
"corpus_id": "15304441",
"num_citations": null
},
{
"corpus_id": "2047718",
"num_citations": null
},
{
"corpus_id": "5603602",
"num_citations": null
}... | [
{
"author_id": "g siopsis_1",
"name": "George Siopsis",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
16801066 | 0804.2811 | 2008-04-17 | Spin Foam Perturbation Theory for Three-Dimensional Quantum Gravity | We formulate the spin foam perturbation theory for three-dimensional Euclidean Quantum Gravity with a cosmological constant. We analyse the perturbative expansion of the partition function in the dilute-gas limit and we argue that the Baez conjecture stating that the number of possible distinct topological classes of p... | [
"gr-qc",
"hep-th",
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1113012 | 0804.2752 | 2008-04-17 | Boosting Algorithms: Regularization, Prediction and Model Fitting | We present a statistical perspective on boosting. Special emphasis is given to estimating potentially complex parametric or nonparametric models, including generalized linear and additive models as well as regression models for survival analysis. Concepts of degrees of freedom and corresponding Akaike or Bayesian infor... | [
"stat.ME"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14355651 | 0804.2897 | 2008-04-17 | A Groebner basis for the secant ideal of the second hypersimplex | We determine a Groebner basis for the secant ideal of the toric ideal associated to the second hypersimplex, with respect to any circular term order. The Groebner basis of the secant ideal requires polynomials of odd degree up to n. This shows that the circular term order is 2-delightful, resolving a conjecture of Drto... | [
"math.AC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
46401036 | 0804.2944 | 2008-04-18 | Polarisation selective magnetic vortex dynamics and core reversal in rotating magnetic fields | A magnetic vortex occurs as an equilibrium configuration in thin ferromagnetic platelets of micron and sub-micron size and is characterised by an in-plane curling magnetisation. At the centre, a magnetic singularity is avoided by an out-of-plane magnetisation core. This core has a gyrotropic excitation mode, which corr... | [
"cond-mat.other"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8889354 | 0804.3065 | 2008-04-18 | Visibly Tree Automata with Memory and Constraints | Tree automata with one memory have been introduced in 2001. They generalize both pushdown (word) automata and the tree automata with constraints of equality between brothers of Bogaert and Tison. Though it has a decidable emptiness problem, the main weakness of this model is its lack of good closure properties. We prop... | [
"cs.LO"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "h comon-lundh_0",
"name": "Hubert Comon-Lundh",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "f jacquemard_1",
"name": "Florent Jacquemard",
"publication_history": null,
"h_index": null,
"num... | null |
16636952 | 0804.2965 | 2008-04-18 | Comment: Performance of Double-Robust Estimators When ``Inverse Probability'' Weights Are Highly Variable | Comment on ``Performance of Double-Robust Estimators When ``Inverse Probability'' Weights Are Highly Variable'' [arXiv:0804.2958] | [
"stat.ME"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
119181971 | 0804.3006 | 2008-04-18 | Theory of near-field matter wave interference beyond the eikonal approximation | A generalized description of Talbot-Lau interference with matter waves is presented, which accounts for arbitrary grating interactions and realistic beam characteristics. The dispersion interaction between the beam particles and the optical elements strongly influences the interference pattern in this near-field effect... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18786044 | 0804.2933 | 2008-04-18 | The Conjecture of Nowicki on Weitzenboeck derivations of polynomial algebras | The Weitzenboeck theorem states that the algebra of constants of a linear locally nilpotent derivation of the polynomial algebra K[Z]=K[z_1,...,z_m] in m variables over a field K of characteristic 0 is finitely generated. If m=2n and the Jordan normal form of the derivation consists of Jordan cells of size 2 only, we m... | [
"math.AC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13161954 | 0804.2973 | 2008-04-18 | Rejoinder: Demystifying Double Robustness: A Comparison of Alternative Strategies for Estimating a Population Mean from Incomplete Data | Rejoinder to ``Demystifying Double Robustness: A Comparison of Alternative Strategies for Estimating a Population Mean from Incomplete Data'' [arXiv:0804.2958] | [
"stat.ME"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
38801927 | 0804.3064 | 2008-04-18 | Intelligence gathering by capturing the social processes within prisons | We present a prototype system that can be used to capture longitudinal socialising processes by recording people's encounters in space. We argue that such a system can usefully be deployed in prisons and other detention facilities in order help intelligence analysts assess the behaviour or terrorist and organised crime... | [
"cs.CY"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v kostakos_1",
"name": "Vassilis Kostakos",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "p kostakos_1",
"name": "Panos Kostakos",
"publication_history": null,
"h_index": null,
"num_papers": ... | null |
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