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 ⌀ |
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33090348 | 0911.4863 | 2009-11-25 | Statistical exponential families: A digest with flash cards | This document describes concisely the ubiquitous class of exponential family distributions met in statistics. The first part recalls definitions and summarizes main properties and duality with Bregman divergences (all proofs are skipped). The second part lists decompositions and related formula of common exponential fa... | [
"cs.LG"
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115163468 | 0911.5175 | 2009-11-26 | An electric charge has no screw sense--a comment on the twistfree formulation of electrodynamics by da Rocha & Rodrigues | Da Rocha and Rodigues (RR) claim (i) that in classical electrodynamics in vector calculus the distinction between polar and axial vectors and in exterior calculus between twisted and untwisted forms is inappropriate and superfluous, and (ii) that they can derive the Lorentz force equation from Maxwell's equations. As t... | [
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15617127 | 0911.5153 | 2009-11-26 | Self-Reference Ultra-Wideband Systems | Towards employing low complexity transceivers for signal reception in Ultra-Wideband (UWB) systems, Transmitted Reference (TR) and Differential TR (DTR) schemes have attracted researchers attention. In this letter, we introduce an alternative, less complex scheme, called Self Reference (SR) UWB transceiver, which uses ... | [
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3128221 | 0911.5104 | 2009-11-26 | A Bayesian Rule for Adaptive Control based on Causal Interventions | Explaining adaptive behavior is a central problem in artificial intelligence research. Here we formalize adaptive agents as mixture distributions over sequences of inputs and outputs (I/O). Each distribution of the mixture constitutes a `possible world', but the agent does not know which of the possible worlds it is ac... | [
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8755434 | 0911.5106 | 2009-11-26 | A conversion between utility and information | Rewards typically express desirabilities or preferences over a set of alternatives. Here we propose that rewards can be defined for any probability distribution based on three desiderata, namely that rewards should be real-valued, additive and order-preserving, where the latter implies that more probable events should ... | [
"cs.AI",
"cs.IT",
"math.IT"
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2492759 | 0911.5143 | 2009-11-26 | Approximation Schemes for Steiner Forest on Planar Graphs and Graphs of Bounded Treewidth | We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, we show how to build a Steiner forest spanner for such graphs. The crux of the process is a clustering procedure called prize-collecting cluster... | [
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"name": "Mohammad [\"Taghi\"] Hajiaghayi",
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56389870 | 0911.4994 | 2009-11-26 | Performance of CMS Muon Reconstruction in Cosmic-Ray Events | The performance of muon reconstruction in CMS is evaluated using a large data sample of cosmic-ray muons recorded in 2008. Efficiencies of various high-level trigger, identification, and reconstruction algorithms have been measured for a broad range of muon momenta, and were found to be in good agreement with expectati... | [
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29741143 | 0911.4973 | 2009-11-26 | An algorithm for the direct reconstruction of the dark matter correlation function from weak lensing and galaxy clustering | The clustering of matter on cosmological scales is an essential probe for studying the physical origin and composition of our Universe. To date, most of the direct studies have focused on shear-shear weak lensing correlations, but it is also possible to extract the dark matter clustering by combining galaxy-clustering ... | [
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"name": "Robert [\"Elliott\"] Smith",
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16020560 | 0911.5067 | 2009-11-26 | Asynchronous CDMA Systems with Random Spreading-Part II: Design Criteria | Totally asynchronous code-division multiple-access (CDMA) systems are addressed. In Part I, the fundamental limits of asynchronous CDMA systems are analyzed in terms of spectral efficiency and SINR at the output of the optimum linear detector. The focus of Part II is the design of low-complexity implementations of line... | [
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"name": "Ralf [\"Reiner\"] Müller",
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56073764 | 0911.5206 | 2009-11-27 | The international pulsar timing array project: using pulsars as a gravitational wave detector | The International Pulsar Timing Array project combines observations of pulsars from both Northern and Southern hemisphere observatories with the main aim of detecting ultra-low frequency (~10^-9 to 10^-8 Hz) gravitational waves. Here we introduce the project, review the methods used to search for gravitational waves em... | [
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15279742 | 0911.5246 | 2009-11-27 | Complex Algebras of Arithmetic | An 'arithmetic circuit' is a labeled, acyclic directed graph specifying a sequence of arithmetic and logical operations to be performed on sets of natural numbers. Arithmetic circuits can also be viewed as the elements of the smallest subalgebra of the complex algebra of the semiring of natural numbers. In the present ... | [
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17127951 | 0911.5341 | 2009-11-27 | Particle mesh simulations of the Lyman-alpha forest and the signature of Baryon Acoustic Oscillations in the intergalactic medium | We present a set of ultra-large particle-mesh simulations of the LyA forest targeted at understanding the imprint of baryon acoustic oscillations (BAO) in the inter-galactic medium. We use 9 dark matter only simulations which can, for the first time, simultaneously resolve the Jeans scale of the intergalactic gas while... | [
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36510728 | 0911.5347 | 2009-11-27 | The WiggleZ Dark Energy Survey: Direct constraints on blue galaxy intrinsic alignments at intermediate redshifts | Correlations between the intrinsic shapes of galaxy pairs, and between the intrinsic shapes of galaxies and the large-scale density field, may be induced by tidal fields. These correlations, which have been detected at low redshifts (z<0.35) for bright red galaxies in the Sloan Digital Sky Survey (SDSS), and for which ... | [
"astro-ph.CO"
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2891518 | 0911.5372 | 2009-11-27 | Maximin affinity learning of image segmentation | Images can be segmented by first using a classifier to predict an affinity graph that reflects the degree to which image pixels must be grouped together and then partitioning the graph to yield a segmentation. Machine learning has been applied to the affinity classifier to produce affinity graphs that are good in the s... | [
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13378546 | 0911.5296 | 2009-11-27 | Which Connected Spatial Networks on Random Points have Linear Route-Lengths? | In a model of a connected network on random points in the plane, one expects that the mean length of the shortest route between vertices at distance $r$ apart should grow only as $O(r)$ as $r \to \infty$, but this is not always easy to verify. We give a general sufficient condition for such linearity, in the setting of... | [
"math.PR",
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314379 | 0911.5242 | 2009-11-27 | The ILIUM forward modelling algorithm for multivariate parameter estimation and its application to derive stellar parameters from Gaia spectrophotometry | I introduce an algorithm for estimating parameters from multidimensional data based on forward modelling. In contrast to many machine learning approaches it avoids fitting an inverse model and the problems associated with this. The algorithm makes explicit use of the sensitivities of the data to the parameters, with th... | [
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43333181 | 0911.5357 | 2009-11-27 | Bayesian Inference from Composite Likelihoods, with an Application to Spatial Extremes | Composite likelihoods are increasingly used in applications where the full likelihood is analytically unknown or computationally prohibitive. Although the maximum composite likelihood estimator has frequentist properties akin to those of the usual maximum likelihood estimator, Bayesian inference based on composite like... | [
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118411455 | 0911.5361 | 2009-11-27 | Line-profile tomography of exoplanet transits I: The Doppler shadow of HD 189733b | We present a direct method for isolating the component of the starlight blocked by a planet as it transits its host star, and apply it to spectra of the bright transiting planet HD 189733b. We model the global shape of the stellar cross-correlation function as the convolution of a limb-darkened rotation profile and a g... | [
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] | null | null | null |
118375993 | 0911.5299 | 2009-11-27 | NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG | We present a next-to-leading order calculation of Higgs boson production in vector-boson fusion processes interfaced to shower Monte Carlo programs, implemented according to the POWHEG method. | [
"hep-ph"
] | null | [
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] | null | null | null |
16939993 | 0911.5429 | 2009-11-28 | Quantum System Identification: Hamiltonian Estimation using Spectral and Bayesian Analysis | Identifying the Hamiltonian of a quantum system from experimental data is considered. General limits on the identifiability of model parameters with limited experimental resources are investigated, and a specific Bayesian estimation procedure is proposed and evaluated for a model system where a-priori information about... | [
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5677872 | 0911.5439 | 2009-11-28 | Penalized Likelihood Methods for Estimation of Sparse High Dimensional Directed Acyclic Graphs | Directed acyclic graphs (DAGs) are commonly used to represent causal relationships among random variables in graphical models. Applications of these models arise in the study of physical, as well as biological systems, where directed edges between nodes represent the influence of components of the system on each other.... | [
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9572562 | 0911.5385 | 2009-11-28 | Asynchronous CDMA Systems with Random Spreading-Part I: Fundamental Limits | Spectral efficiency for asynchronous code division multiple access (CDMA) with random spreading is calculated in the large system limit allowing for arbitrary chip waveforms and frequency-flat fading. Signal to interference and noise ratios (SINRs) for suboptimal receivers, such as the linear minimum mean square error ... | [
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... | null |
118530839 | 0911.5516 | 2009-11-29 | Cosmic Flows on 100 Mpc/h Scales: Standardized Minimum Variance Bulk Flow, Shear and Octupole Moments | The low order moments, such as the bulk flow and shear, of the large scale peculiar velocity field are sensitive probes of the matter density fluctuations on very large scales. In practice, however, peculiar velocity surveys are usually sparse and noisy, which can lead to the aliasing of small scale power into what is ... | [
"astro-ph.CO"
] | null | [
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] | null | null | null |
10125971 | 0911.5526 | 2009-11-29 | Subsampling Mathematical Relaxations and Average-case Complexity | We initiate a study of when the value of mathematical relaxations such as linear and semidefinite programs for constraint satisfaction problems (CSPs) is approximately preserved when restricting the instance to a sub-instance induced by a small random subsample of the variables. Let $C$ be a family of CSPs such as 3SAT... | [
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12153692 | 0911.5509 | 2009-11-29 | Interference Alignment Under Limited Feedback for MIMO Interference Channels | While interference alignment schemes have been employed to realize the full multiplexing gain of $K$-user interference channels, the analyses performed so far have predominantly focused on the case when global channel knowledge is available at each node of the network. This paper considers the problem where each receiv... | [
"cs.IT",
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14295703 | 0911.5524 | 2009-11-29 | LS-CS-residual (LS-CS): Compressive Sensing on Least Squares Residual | We consider the problem of recursively and causally reconstructing time sequences of sparse signals (with unknown and time-varying sparsity patterns) from a limited number of noisy linear measurements. The sparsity pattern is assumed to change slowly with time. The idea of our proposed solution, LS-CS-residual (LS-CS),... | [
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] | null |
17768721 | 0911.5440 | 2009-11-29 | The wave equation on asymptotically Anti-de Sitter spaces | In this paper we describe the behavior of solutions of the Klein-Gordon equation, (Box_g+lambda)u=f, on Lorentzian manifolds (X^o,g) which are anti-de Sitter-like (AdS-like) at infinity. Such manifolds are Lorentzian analogues of the so-called Riemannian conformally compact (or asymptotically hyperbolic) spaces, in the... | [
"math.AP",
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8352609 | 0911.5508 | 2009-11-29 | Codes on graphs: Duality and MacWilliams identities | A conceptual framework involving partition functions of normal factor graphs is introduced, paralleling a similar recent development by Al-Bashabsheh and Mao. The partition functions of dual normal factor graphs are shown to be a Fourier transform pair, whether or not the graphs have cycles. The original normal graph d... | [
"cs.IT",
"math.IT"
] | null | [
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118438991 | 0911.5522 | 2009-11-29 | The Return of Activity in Main-Belt Comet 133P/Elst-Pizarro | Comet 133P/Elst-Pizarro is the first-known and currently best-characterised member of the main-belt comets, a recently-identified class of objects that exhibit cometary activity but which are dynamically indistinguishable from main-belt asteroids. We report here on the results of a multi-year monitoring campaign from 2... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119189843 | 0911.5457 | 2009-11-29 | The Disk Population of the Taurus Star-Forming Region | We have analyzed nearly all images of the Taurus star-forming region at 3.6-24um that were obtained during the cryogenic mission of the Spitzer Space Telescope (46 deg^2) and have measured photometry for all known members of the region that are within these data, corresponding to 348 sources. We have classified the mem... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15671 | 0911.5515 | 2009-11-29 | Finite Dimensional Statistical Inference | In this paper, we derive the explicit series expansion of the eigenvalue distribution of various models, namely the case of non-central Wishart distributions, as well as correlated zero mean Wishart distributions. The tools used extend those of the free probability framework, which have been quite successful for high d... | [
"cs.IT",
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... | null |
22039006 | 0911.5503 | 2009-11-29 | Finitely additive probabilities and the Fundamental Theorem of Asset Pricing | This work aims at a deeper understanding of the mathematical implications of the economically-sound condition of absence of arbitrages of the first kind in a financial market. In the spirit of the Fundamental Theorem of Asset Pricing (FTAP), it is shown here that absence of arbitrages of the first kind in the market is... | [
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118529025 | 0911.5621 | 2009-11-30 | Colors of a Second Earth: Estimating the fractional areas of ocean, land, and vegetation of Earth-like exoplanets | Characterizing the surfaces of rocky exoplanets via the scattered light will be an essential challenge to investigate the existence of life on habitable exoplanets. We present a simple reconstruction method for fractional areas of different surface types from photometric variations, or colors, of a second Earth. We cre... | [
"astro-ph.EP"
] | null | [
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] | null | null | null |
13438139 | 0911.5708 | 2009-11-30 | Learning in a Large Function Space: Privacy-Preserving Mechanisms for SVM Learning | Several recent studies in privacy-preserving learning have considered the trade-off between utility or risk and the level of differential privacy guaranteed by mechanisms for statistical query processing. In this paper we study this trade-off in private Support Vector Machine (SVM) learning. We present two efficient me... | [
"cs.LG",
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16801115 | 0912.0039 | 2009-11-30 | X-ray groups and clusters of galaxies in the Subaru-XMM Deep Field | We present the results of a search for galaxy clusters in Subaru-XMM Deep Field. We reach a depth for a total cluster flux in the 0.5-2 keV band of 2x10^{-15} ergs cm^{-2} s^{-1} over one of the widest XMM-Newton contiguous raster surveys, covering an area of 1.3 square degrees. Cluster candidates are identified throug... | [
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53369440 | 0912.0012 | 2009-11-30 | Sizes and ages of SDSS ellipticals: Comparison with hierarchical galaxy formation models | In a sample of about 45,700 early-type galaxies extracted from SDSS, we find that the shape, normalization, and dispersion around the mean size-stellar mass relation is the same for young and old systems, provided the stellar mass is greater than 3*10^10 Msun. This is difficult to reproduce in pure passive evolution mo... | [
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8455193 | 0911.5482 | 2009-11-30 | Sparse Empirical Bayes Analysis (SEBA) | We consider a joint processing of $n$ independent sparse regression problems. Each is based on a sample $(y_{i1},x_{i1})...,(y_{im},x_{im})$ of $m$ \iid observations from $y_{i1}=x_{i1}\t\beta_i+\eps_{i1}$, $y_{i1}\in \R$, $x_{i 1}\in\R^p$, $i=1,...,n$, and $\eps_{i1}\dist N(0,\sig^2)$, say. $p$ is large enough so that... | [
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"name": "Ya'acov Ritov",
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1578541 | 0912.0071 | 2009-11-30 | Differentially Private Empirical Risk Minimization | Privacy-preserving machine learning algorithms are crucial for the increasingly common setting in which personal data, such as medical or financial records, are analyzed. We provide general techniques to produce privacy-preserving approximations of classifiers learned via (regularized) empirical risk minimization (ERM)... | [
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119274323 | 0911.5561 | 2009-11-30 | Multicritical point of spin glasses | We present a theoretical framework to accurately calculate the location of the multicritical point in the phase diagram of spin glasses. The result shows excellent agreement with numerical estimates. The basic idea is a combination of the duality relation, the replica method, and the gauge symmetry. An additional eleme... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech"
] | null | [
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{
"author_id": "h nishimori_1",
"name": "Hidetoshi Nishimori",
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{
"author_id": "m ohzeki_1",
"name": "Masayuki Ohzeki",
"publication_history": null,
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"num_papers"... | null |
5262868 | 0912.0238 | 2009-12-01 | Spectral Ranking | We sketch the history of spectral ranking, a general umbrella name for techniques that apply the theory of linear maps (in particular, eigenvalues and eigenvectors) to matrices that do not represent geometric transformations, but rather some kind of relationship between entities. Albeit recently made famous by the ampl... | [
"cs.IR",
"cs.SI",
"physics.soc-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
125272034 | 0912.0179 | 2009-12-01 | Local matching indicators for transport with concave costs | In this note, we introduce a class of indicators that enable to compute efficiently optimal transport plans associated to arbitrary distributions of $N$ demands and $N$ supplies in $\mathbf{R}$ in the case where the cost function is concave. The computational cost of these indicators is small and independent of $N$. A ... | [
"math.OC"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j delon_1",
"name": "Julie Delon",
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{
"author_id": "j salomon_1",
"name": "Julien Salomon",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
8998095 | 0912.0171 | 2009-12-01 | Under-determined reverberant audio source separation using a full-rank spatial covariance model | This article addresses the modeling of reverberant recording environments in the context of under-determined convolutive blind source separation. We model the contribution of each source to all mixture channels in the time-frequency domain as a zero-mean Gaussian random variable whose covariance encodes the spatial cha... | [
"stat.ML"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
28710439 | 0912.0045 | 2009-12-01 | The Spontaneous Emergence of Social Influence in Online Systems | Social influence drives both offline and online human behaviour. It pervades cultural markets, and manifests itself in the adoption of scientific and technical innovations as well as the spread of social practices. Prior empirical work on the diffusion of innovations in spatial regions or social networks has largely fo... | [
"physics.soc-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
90186 | 0912.0338 | 2009-12-01 | Correlation Decay in Random Decision Networks | We consider a decision network on an undirected graph in which each node corresponds to a decision variable, and each node and edge of the graph is associated with a reward function whose value depends only on the variables of the corresponding nodes. The goal is to construct a decision vector which maximizes the total... | [
"math.PR",
"cs.DC",
"math.OC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13196987 | 0912.0301 | 2009-12-01 | Functional integral approach for multiplicative stochastic processes | We present a functional formalism to derive a generating functional for correlation functions of a multiplicative stochastic process represented by a Langevin equation. We deduce a path integral over a set of fermionic and bosonic variables without performing any time discretization. The usual prescriptions to define t... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "z arenas_1",
"name": "Zochil [\"González\"] Arenas",
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{
"author_id": "d barci_1",
"name": "Daniel [\"G.\"] Barci",
"publication_history": null,
"h_index": null,
"... | null |
6830140 | 0912.0250 | 2009-12-01 | Optimal lower bounds for locality sensitive hashing (except when q is tiny) | We study lower bounds for Locality Sensitive Hashing (LSH) in the strongest setting: point sets in {0,1}^d under the Hamming distance. Recall that here H is said to be an (r, cr, p, q)-sensitive hash family if all pairs x, y in {0,1}^d with dist(x,y) at most r have probability at least p of collision under a randomly c... | [
"cs.DS",
"cs.CG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8231745 | 0912.0254 | 2009-12-01 | Suzaku observation of IGR J16318-4848 | We report on the first Suzaku observation of IGR J16318-4848, the most extreme example of a new group of highly absorbed X-ray binaries that have recently been discovered by the International Gamma-Ray Astrophysics Laboratory INTEGRAL. The Suzaku observation was carried out between 2006 August 14 and 17, with a net exp... | [
"astro-ph.HE",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16711194 | 0912.0086 | 2009-12-01 | Learning Mixtures of Gaussians using the k-means Algorithm | One of the most popular algorithms for clustering in Euclidean space is the $k$-means algorithm; $k$-means is difficult to analyze mathematically, and few theoretical guarantees are known about it, particularly when the data is {\em well-clustered}. In this paper, we attempt to fill this gap in the literature by analyz... | [
"cs.LG"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
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{
"author_id": "k chaudhuri_1",
"name": "Kamalika Chaudhuri",
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{
"author_id": "s dasgupta_13",
"name": "Sanjoy Dasgupta",
"publication_history": null,
"h_index": null,
"num_paper... | null |
14315115 | 0912.0259 | 2009-12-01 | Environment and self-regulation in galaxy formation | The environment is known to affect the formation and evolution of galaxies considerably best visible through the well-known morphology-density relationship. In this paper we study the effect of environment on the evolution of early-type galaxies by analysing the stellar population properties of 3,360 galaxies morpholog... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119206411 | 0912.0195 | 2009-12-01 | Quantum computations without definite causal structure | We show that quantum theory allows for transformations of black boxes that cannot be realized by inserting the input black boxes within a circuit in a pre-defined causal order. The simplest example of such a transformation is the classical switch of black boxes, where two input black boxes are arranged in two different... | [
"quant-ph"
] | null | [
"target.author.publication_history",
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{
"author_id": "g chiribella_1",
"name": "Giulio Chiribella",
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{
"author_id": "g d’ariano_1",
"name": "Giacomo [\"Mauro\"] D’Ariano",
"publication_history": null,
"h_index": null,
... | null |
9814803 | 0912.0193 | 2009-12-01 | Avalanches and Dynamical Correlations in supercooled liquids | We identify the pattern of microscopic dynamical relaxation for a two dimensional glass forming liquid. On short timescales, bursts of irreversible particle motion, called cage jumps, aggregate into clusters. On larger time scales, clusters aggregate both spatially and temporally into avalanches. This propagation of mo... | [
"cond-mat.soft"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r candelier_0",
"name": "Raphaël Candelier",
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{
"author_id": "a widmer‐cooper_1",
"name": "Asaph Widmer‐Cooper",
"publication_history": null,
"h_index": null,
"nu... | null |
73574723 | 0912.0142 | 2009-12-01 | A Global Spectral Study of Black Hole X-ray Binaries | (Abridged) We report on a consistent and comprehensive spectral analysis of the X-ray emission of 25 Black Hole X-ray Binaries. All publicly available observations of the black hole binaries in the RXTE archive were analysed. Three different types of model were fitted to investigate the spectral changes occurring durin... | [
"astro-ph.HE",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5196262 | 0912.0229 | 2009-12-01 | Approximate Sparse Recovery: Optimizing Time and Measurements | An approximate sparse recovery system consists of parameters $k,N$, an $m$-by-$N$ measurement matrix, $\Phi$, and a decoding algorithm, $\mathcal{D}$. Given a vector, $x$, the system approximates $x$ by $\widehat x =\mathcal{D}(\Phi x)$, which must satisfy $\| \widehat x - x\|_2\le C \|x - x_k\|_2$, where $x_k$ denotes... | [
"cs.DS",
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2495538 | 0912.0242 | 2009-12-01 | Measurements of Charged Current Lepton Universality and $|V_{us}|$ using Tau Lepton Decays to $e^- \bar{\nu}_e \nu_\tau$, $\mu^- \bar{\nu}_\mu \nu_\tau$, $\pi^- \nu_\tau$, and $\K^- \nu_\tau$ | Using 467 $fb^{-1}$ of $e^+e^-$ annihilation data collected with the BaBar detector, we measure $\frac{{\cal{B}}(\tau^- \to \mu^- \bar{\nu}_\mu \nu_\tau)}{{\cal{B}}(\tau^- \to e^- \bar{\nu}_e \nu_\tau)} = (0.9796 \pm 0.0016 \pm 0.0036)$, $\frac{{\cal{B}}(\tau^- \to \pi^- \nu_\tau)}{{\cal{B}}(\tau^- \to e^- \bar{\nu}_e ... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "b aubert_1",
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{
"author_id": "y karyotakis_1",
"name": "Yannis Karyotakis",
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"h_index": null,
"num_papers": ... | null |
119193888 | 0912.0402 | 2009-12-02 | Elementary Energy Release Events in Flaring Loops: Effects of Chromospheric Evaporation on X-rays | With the elementary energy release events introduced in a previous paper (Liu & Fletcher 2009) we model the chromospheric evaporation in flaring loops. The thick-target hard X-ray (HXR) emission produced by electrons escaping from the acceleration region dominates the impulsive phase and the thin-target emission from t... | [
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7437316 | 0912.0518 | 2009-12-02 | Retired A Stars and Their Companions. III. Comparing the Mass-Period Distributions of Planets Around A-Type Stars and Sun-Like Stars | We present an analysis of ~5 years of Lick Observatory radial velocity measurements targeting a uniform sample of 31 intermediate-mass subgiants (1.5 < M*/Msun < 2.0) with the goal of measuring the occurrence rate of Jovian planets around (evolved) A-type stars and comparing the distributions of their orbital and physi... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15662561 | 0912.0568 | 2009-12-02 | Hardness Amplification in Proof Complexity | We present a general method for converting any family of unsatisfiable CNF formulas that is hard for one of the simplest proof systems, tree resolution, into formulas that require large rank in any proof system that manipulates polynomials or polynomial threshold functions of degree at most k (known as Th(k) proofs). S... | [
"cs.CC"
] | null | [
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] | [
{
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{
"corpus_id": "1162582",
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] | [
{
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{
"author_id": "t huynh_3",
"name": "Trinh [\"N.\",\"D.\"] Huynh",
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"num_papers": ... | null |
108781300 | 0912.0467 | 2009-12-02 | Exact modeling method for discrete finite metamaterial lens | We describe an efficient rigorous model suitable for calculating the properties of finite metamaterial samples, which takes into account the discrete structure of metamaterials based on capacitively loaded ring resonators. We illustrate how this model applies specifically to a metamaterial lens employed in magnetic res... | [
"physics.optics"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m lapine_1",
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{
"author_id": "l jelínek_1",
"name": "Lukás Jelínek",
"publication_history": null,
"h_index": null,
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... | null |
36811521 | 0912.0396 | 2009-12-02 | Stable laser-driven proton beam acceleration from a two-specie ultra-thin foil | By using multi-dimensional particle-in-cell simulation, we present a new regime of stable proton beam acceleration which takes place when a two-specie shaped foil is illuminated by a circularly polarized laser pulse. It is observed that the lighter protons are nearly-instantaneously separated from the heavier carbon io... | [
"physics.plasm-ph",
"physics.acc-ph",
"physics.med-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
43995053 | 0912.0325 | 2009-12-02 | Homological stability for Hurwitz spaces and the Cohen-Lenstra conjecture over function fields | We prove a homological stabilization theorem for Hurwitz spaces: moduli spaces of branched covers of the complex projective line. This has the following arithmetic consequence: let l>2 be prime and A a finite abelian l-group. Then there exists Q = Q(A) such that, for q greater than Q and not congruent to 1 modulo l, a ... | [
"math.NT",
"math.AT"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "119714207",
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}
] | [
{
"author_id": "j ellenberg_2",
"name": "Jordan [\"S.\"] Ellenberg",
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{
"author_id": "a venkatesh_1",
"name": "Akshay Venkatesh",
"publication_history": null,
"h_index": null,
"n... | null |
18087012 | 0912.0509 | 2009-12-02 | Pareto efficiency for the concave order and multivariate comonotonicity | In this paper, we focus on efficient risk-sharing rules for the concave dominance order. For a univariate risk, it follows from a comonotone dominance principle, due to Landsberger and Meilijson [25], that efficiency is characterized by a comonotonicity condition. The goal of this paper is to generalize the comonotone ... | [
"math.OC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118413087 | 0912.0545 | 2009-12-02 | Turbulence and the formation of filaments, loops and shock fronts in NGC 1275 in the Perseus Galaxy Cluster | NGC1275, the central galaxy in the Perseus cluster, is the host of gigantic hot bipolar bubbles inflated by AGN jets observed in the radio as Perseus A. It presents a spectacular $H{\alpha}$-emitting nebulosity surrounding NGC1275, with loops and filaments of gas extending to over 50 kpc. The origin of the filaments is... | [
"astro-ph.CO",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118495239 | 0912.0446 | 2009-12-02 | The Local Bias Model in the Large Scale Halo Distribution | We explore the biasing in the clustering statistics of halos as compared to dark matter (DM) in simulations. We look at the second and third order statistics at large scales of the (intermediate) MICEL1536 simulation and also measure directly the local bias relation h = f({\delta}) between DM fluctuations, {\delta}, sm... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7267765 | 0912.0537 | 2009-12-02 | Steinitz Theorems for Orthogonal Polyhedra | We define a simple orthogonal polyhedron to be a three-dimensional polyhedron with the topology of a sphere in which three mutually-perpendicular edges meet at each vertex. By analogy to Steinitz's theorem characterizing the graphs of convex polyhedra, we find graph-theoretic characterizations of three classes of simpl... | [
"cs.CG",
"math.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
52994592 | 0912.0700 | 2009-12-03 | The minor role of gas-rich major mergers in the rise of intermediate-mass early types at z <~ 1 | We study the evolution of galaxy structure since z ~ 1 to the present. From a GOODS-S multi-band catalog we define (blue) luminosity- and mass-weighted samples, limited by M_B <= -20 and M_star >= 10^10 M_Sun, comprising 1122 and 987 galaxies, respectively. We extract early-type (E/S0/Sa) and late-type (Sb-Irr) subsamp... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118605938 | 0912.0552 | 2009-12-03 | Dark Matter Search Using Chandra Observations of Willman 1, and a Spectral Feature Consistent with a Decay Line of a 5 keV Sterile Neutrino | We report the results of a search for an emission line from radiatively decaying dark matter in the Chandra X-ray Observatory spectrum of the ultra-faint dwarf spheroidal galaxy Willman 1. 99% confidence line flux upper limits over the 0.4-7 keV Chandra bandpass are derived and mapped to an allowed region in the steril... | [
"astro-ph.HE",
"astro-ph.CO",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13899584 | 1011.3152 | 2009-12-03 | On the Energy Efficiency of LT Codes in Proactive Wireless Sensor Networks | This paper presents an in-depth analysis on the energy efficiency of Luby Transform (LT) codes with Frequency Shift Keying (FSK) modulation in a Wireless Sensor Network (WSN) over Rayleigh fading channels with pathloss. We describe a proactive system model according to a flexible duty-cycling mechanism utilized in prac... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j abouei_1",
"name": "Jamshid Abouei",
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{
"author_id": "j brown_12",
"name": "J. [\"David\"] Brown",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
119235071 | 0912.0630 | 2009-12-03 | Phase diagram of epidemic spreading - unimodal vs. bimodal probability distributions | The disease spreading on complex networks is studied in SIR model. Simulations on empirical complex networks reveal two specific regimes of disease spreading: local containment and epidemic outbreak. The variables measuring the extent of disease spreading are in general characterized by a bimodal probability distributi... | [
"physics.soc-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a lancic_1",
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{
"author_id": "n antulov-fantulin_1",
"name": "Nino Antulov-Fantulin",
"publication_history": null,
"h_index": null,
"num_pa... | null |
13331517 | 0912.0514 | 2009-12-03 | The Growth of Massive Galaxies Since z=2 | We study the growth of massive galaxies from z=2 to the present using data from the NEWFIRM Medium Band Survey. The sample is selected at a constant number density of n=2x10^-4 Mpc^-3, so that galaxies at different epochs can be compared in a meaningful way. We show that the stellar mass of galaxies at this number dens... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119289022 | 0912.0731 | 2009-12-03 | Detailed Decomposition of Galaxy Images. II. Beyond Axisymmetric Models | We present a two-dimensional (2-D) fitting algorithm (GALFIT, Version 3) with new capabilities to study the structural components of galaxies and other astronomical objects in digital images. Our technique improves on previous 2-D fitting algorithms by allowing for irregular, curved, logarithmic and power-law spirals, ... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15766605 | 0912.0719 | 2009-12-03 | The weak limit of Ising models on locally tree-like graphs | We consider the Ising model with inverse temperature beta and without external field on sequences of graphs G_n which converge locally to the k-regular tree. We show that for such graphs the Ising measure locally weak converges to the symmetric mixture of the Ising model with + boundary conditions and the - boundary co... | [
"math.PR",
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "17381644",
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] | [
{
"author_id": "a montanari_2",
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{
"author_id": "e mossel_1",
"name": "Elchanan Mossel",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
3424244 | 0912.0646 | 2009-12-03 | Simulation of strongly correlated fermions in two spatial dimensions with fermionic Projected Entangled-Pair States | We explain how to implement, in the context of projected entangled-pair states (PEPS), the general procedure of fermionization of a tensor network introduced in [P. Corboz, G. Vidal, Phys. Rev. B 80, 165129 (2009)]. The resulting fermionic PEPS, similar to previous proposals, can be used to study the ground state of in... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p corboz_1",
"name": "Philippe Corboz",
"publication_history": null,
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{
"author_id": "r orús_1",
"name": "Román Orús",
"publication_history": null,
"h_index": null,
"num_papers": null,
"n... | null |
116493144 | 0912.0641 | 2009-12-03 | The volume enclosed by an n-dimensional Lam\'e curve | We compute the volume of the body enclosed by the $n$-dimensional Lam\'e curve defined by $\sum_{i=1}^nx_i^b= E$. | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r toral_1",
"name": "Raúl Toral",
"publication_history": null,
"h_index": null,
"num_papers": null,
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}
] | null |
2954986 | 0912.0681 | 2009-12-03 | A Local Spectral Method for Graphs: with Applications to Improving Graph Partitions and Exploring Data Graphs Locally | The second eigenvalue of the Laplacian matrix and its associated eigenvector are fundamental features of an undirected graph, and as such they have found widespread use in scientific computing, machine learning, and data analysis. In many applications, however, graphs that arise have several \emph{local} regions of int... | [
"cs.DS"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "3612445",
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}
] | [
{
"author_id": "m mahoney_1",
"name": "Michael [\"W.\"] Mahoney",
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},
{
"author_id": "l orecchia_1",
"name": "Lorenzo Orecchia",
"publication_history": null,
"h_index": null,
"num_p... | null |
12182606 | 0912.0821 | 2009-12-04 | Lexical evolution rates by automated stability measure | Phylogenetic trees can be reconstructed from the matrix which contains the distances between all pairs of languages in a family. Recently, we proposed a new method which uses normalized Levenshtein distances among words with same meaning and averages on all the items of a given list. Decisions about the number of items... | [
"cs.CL",
"physics.soc-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13639464 | 0912.0950 | 2009-12-04 | Fingerprint Verification based on Gabor Filter Enhancement | Human fingerprints are reliable characteristics for personnel identification as it is unique and persistence. A fingerprint pattern consists of ridges, valleys and minutiae. In this paper we propose Fingerprint Verification based on Gabor Filter Enhancement (FVGFE) algorithm for minutiae feature extraction and post pro... | [
"cs.CR",
"cs.CV"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "b lavanya_0",
"name": "B. Lavanya",
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{
"author_id": "k raja_2",
"name": "K. [\"Bommanna\"] Raja",
"publication_history": null,
"h_index": null,
"num_papers": null... | null |
4818030 | 0912.0874 | 2009-12-04 | Qualitative Robustness of Support Vector Machines | Support vector machines have attracted much attention in theoretical and in applied statistics. Main topics of recent interest are consistency, learning rates and robustness. In this article, it is shown that support vector machines are qualitatively robust. Since support vector machines can be represented by a functio... | [
"stat.ML",
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118699470 | 0912.0853 | 2009-12-04 | Froggatt-Nielsen models from E8 in F-theory GUTs | This paper studies F-theory SU(5) GUT models where the three generations of the standard model come from three different curves. All the matter is taken to come from curves intersecting at a point of enhanced E8 gauge symmetry. Giving a vev to some of the GUT singlets naturally implements a Froggatt-Nielsen approach to... | [
"hep-th",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
41962572 | 0912.0766 | 2009-12-04 | Approximate reconstruction of bandlimited functions for the integrate and fire sampler | In this paper we study the reconstruction of a bandlimited signal from samples generated by the integrate and fire model. This sampler allows us to trade complexity in the reconstruction algorithms for simple hardware implementations, and is specially convenient in situations where the sampling device is limited in ter... | [
"physics.data-an",
"math.FA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
88518170 | 0912.0902 | 2009-12-04 | Making and Evaluating Point Forecasts | Typically, point forecasting methods are compared and assessed by means of an error measure or scoring function, such as the absolute error or the squared error. The individual scores are then averaged over forecast cases, to result in a summary measure of the predictive performance, such as the mean absolute error or ... | [
"math.ST",
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] | null | null | null |
21576759 | 0912.0863 | 2009-12-04 | Routhian reduction for quasi-invariant Lagrangians | In this paper we describe Routhian reduction as a special case of standard symplectic reduction, also called Marsden-Weinstein reduction. We use this correspondence to present a generalization of Routhian reduction for quasi-invariant Lagrangians, i.e. Lagrangians that are invariant up to a total time derivative. We sh... | [
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119206220 | 0912.0907 | 2009-12-04 | X-ray Polarization from Accreting Black Holes: Coronal Emission | We present new calculations of X-ray polarization from accreting black holes (BHs), using a Monte-Carlo ray-tracing code in full general relativity. In our model, an optically thick disk in the BH equatorial plane produces thermal seed photons with polarization oriented parallel to the disk surface. These seed photons ... | [
"astro-ph.HE"
] | null | [
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{
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... | [
{
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{
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"name": "Julian [\"H.\"] Krolik",
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... | null |
9868325 | 0912.0779 | 2009-12-04 | Training a Large Scale Classifier with the Quantum Adiabatic Algorithm | In a previous publication we proposed discrete global optimization as a method to train a strong binary classifier constructed as a thresholded sum over weak classifiers. Our motivation was to cast the training of a classifier into a format amenable to solution by the quantum adiabatic algorithm. Applying adiabatic qua... | [
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"author_id": "h neven_1",
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{
"author_id": "v denchev_1",
"name": "Vasil [\"S.\"] Denchev",
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"num_papers": ... | null |
11160094 | 0912.0862 | 2009-12-04 | Exchange flow of two immiscible fluids and the principle of maximum flux | The steady, coaxial flow in which two immiscible, incompressible fluids move past each other in a cylindrical tube has a continuum of possibilities due to the arbitrariness of the interface between the fluids. By invoking the presence of surface tension to at least restrict the shape of any interface to that of a circu... | [
"physics.flu-dyn",
"physics.gen-ph"
] | null | [
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{
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"name": "Rich [\"R.\"] Kerswell",
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}
] | null |
14125903 | 0912.0962 | 2009-12-04 | Adaptive Limited Feedback for Sum-Rate Maximizing Beamforming in Cooperative Multicell Systems | Base station cooperation improves the sum-rates that can be achieved in cellular systems. Conventional cooperation techniques require sharing large amounts of information over finite-capacity backhaul links and assume that base stations have full channel state information (CSI) of all the active users in the system. In... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18035455 | 0912.1056 | 2009-12-05 | VISTA Variables in the Via Lactea (VVV): The public ESO near-IR variability survey of the Milky Way | We describe the public ESO near-IR variability survey (VVV) scanning the Milky Way bulge and an adjacent section of the mid-plane where star formation activity is high. The survey will take 1929 hours of observations with the 4-metre VISTA telescope during five years (2010-2014), covering ~10^9 point sources across an ... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7232442 | 0912.1045 | 2009-12-05 | Thresholded Covering Algorithms for Robust and Max-Min Optimization | The general problem of robust optimization is this: one of several possible scenarios will appear tomorrow, but things are more expensive tomorrow than they are today. What should you anticipatorily buy today, so that the worst-case cost (summed over both days) is minimized? Feige et al. and Khandekar et al. considered... | [
"cs.DS"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "a gupta_108",
"name": "Anupam Gupta",
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},
{
"author_id": "v nagarajan_1",
"name": "Viswanath Nagarajan",
"publication_history": null,
"h_index": null,
"num_papers": ... | null |
14664111 | 0912.1128 | 2009-12-06 | How to Explain Individual Classification Decisions | After building a classifier with modern tools of machine learning we typically have a black box at hand that is able to predict well for unseen data. Thus, we get an answer to the question what is the most likely label of a given unseen data point. However, most methods will provide no answer why the model predicted th... | [
"stat.ML",
"cs.LG"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference",
"target.key_reference"
] | [] | [
{
"author_id": "d baehrens_0",
"name": "David Baehrens",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "t schroeter_0",
"name": "Timon Schroeter",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
4689036 | 0912.1155 | 2009-12-06 | A Learning-Based Approach to Reactive Security | Despite the conventional wisdom that proactive security is superior to reactive security, we show that reactive security can be competitive with proactive security as long as the reactive defender learns from past attacks instead of myopically overreacting to the last attack. Our game-theoretic model follows common pra... | [
"cs.CR",
"cs.GT",
"cs.LG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
42390875 | 0912.0973 | 2009-12-06 | Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes | The diffuse Galactic gamma-ray emission is produced by cosmic rays (CRs) interacting with the interstellar gas and radiation field. Measurements by the Energetic Gamma-Ray Experiment Telescope (EGRET) instrument on the Compton Gamma-Ray Observatory indicated excess gamma-ray emission > 1 GeV relative to diffuse Galacti... | [
"astro-ph.HE"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "a abdo_2",
"name": "A. [\"A.\"] Abdo",
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},
{
"author_id": "m ackermann_1",
"name": "Markus Ackermann",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
17172436 | 0912.1135 | 2009-12-06 | A fast randomized algorithm for orthogonal projection | We describe an algorithm that, given any full-rank matrix A having fewer rows than columns, can rapidly compute the orthogonal projection of any vector onto the null space of A, as well as the orthogonal projection onto the row space of A, provided that both A and its adjoint can be applied rapidly to arbitrary vectors... | [
"cs.NA"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "e coakley_0",
"name": "E. [\"S.\"] Coakley",
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},
{
"author_id": "v rokhlin_1",
"name": "Vladimir Rokhlin",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
115179493 | 0912.0945 | 2009-12-07 | On the stability of topological phases on a lattice | We study the stability of anyonic models on lattices to perturbations. We establish a cluster expansion for the energy of the perturbed models and use it to study the stability of the models to local perturbations. We show that the spectral gap is stable when the model is defined on a sphere, so that there is no ground... | [
"quant-ph",
"cond-mat.other",
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2172094 | 0912.1329 | 2009-12-07 | Energy Efficient Scheduling via Partial Shutdown | Motivated by issues of saving energy in data centers we define a collection of new problems referred to as "machine activation" problems. The central framework we introduce considers a collection of $m$ machines (unrelated or related) with each machine $i$ having an {\em activation cost} of $a_i$. There is also a colle... | [
"cs.DS",
"cs.CC"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "15292228",
"num_citations": null
}
] | [
{
"author_id": "s khuller_1",
"name": "Samir Khuller",
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"h_index": null,
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},
{
"author_id": "j li_552",
"name": "J. Li",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_cit... | null |
28654797 | 0912.1298 | 2009-12-07 | A Geometric Theory of Thermal Stresses | In this paper we formulate a geometric theory of thermal stresses. Given a temperature distribution, we associate a Riemannian material manifold to the body, with a metric that explicitly depends on the temperature distribution. A change of temperature corresponds to a change of the material metric. In this sense, a te... | [
"math-ph",
"math.MP",
"physics.class-ph"
] | null | [
"target.author.publication_history",
"target.key_reference"
] | [] | [
{
"author_id": "a ozakin_1",
"name": "Arkadas Ozakin",
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},
{
"author_id": "a yavari_2",
"name": "Arash Yavari",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
118469550 | 0912.1190 | 2009-12-07 | The Debris Disk of Vega: A Steady-State Collisional Cascade, Naturally | It has been argued that the photometric data and images of the archetypical debris disk around Vega may be in contradiction with the standard, steady-state collisional scenario of the disk evolution. Here we perform physical modeling of the Vega disk "from the sources". We assume that dust is maintained by a "Kuiper be... | [
"astro-ph.EP",
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
115172461 | 0912.0966 | 2009-12-07 | Random covariance matrices: Universality of local statistics of eigenvalues | We study the eigenvalues of the covariance matrix $\frac{1}{n}M^*M$ of a large rectangular matrix $M=M_{n,p}=(\zeta_{ij})_{1\leq i\leq p;1\leq j\leq n}$ whose entries are i.i.d. random variables of mean zero, variance one, and having finite $C_0$th moment for some sufficiently large constant $C_0$. The main result of t... | [
"math.SP",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2479384 | 0912.1403 | 2009-12-07 | Algorithms and Hardness for Subspace Approximation | The subspace approximation problem Subspace($k$,$p$) asks for a $k$-dimensional linear subspace that fits a given set of points optimally, where the error for fitting is a generalization of the least squares fit and uses the $\ell_{p}$ norm instead. Most of the previous work on subspace approximation has focused on sma... | [
"cs.DS",
"cs.CC"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "a deshpande_9",
"name": "Amit Deshpande",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m tulsiani_1",
"name": "Madhur Tulsiani",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
56370629 | 0912.1343 | 2009-12-07 | Weighing simulated galaxy clusters using lensing and X-ray | We aim at investigating potential biases in lensing and X-ray methods to measure the cluster mass profiles. We do so by performing realistic simulations of lensing and X-ray observations that are subsequently analyzed using observational techniques. The resulting mass estimates are compared among them and with the inpu... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "16378825",
"num_citations": null
}
] | [
{
"author_id": "m meneghetti_2",
"name": "Massimo Meneghetti",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m meneghetti_2",
"name": "Massimo Meneghetti",
"publication_history": null,
"h_index": null,
"num_... | null |
14534974 | 0912.1185 | 2009-12-07 | Alternating Direction Algorithms for $\ell_1$-Problems in Compressive Sensing | In this paper, we propose and study the use of alternating direction algorithms for several $\ell_1$-norm minimization problems arising from sparse solution recovery in compressive sensing, including the basis pursuit problem, the basis-pursuit denoising problems of both unconstrained and constrained forms, as well as ... | [
"math.OC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118476868 | 0912.0937 | 2009-12-07 | Collective Quartics from Simple Groups | This article classifies Little Higgs models that have collective quartic couplings. There are two classes of collective quartics: Special Cosets and Special Quartics. After taking into account dangerous singlets, the smallest Special Coset models are SU(5)/SO(5) and SU(6)/Sp(6). The smallest Special Quartic model is SU... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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