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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15236565 | 0902.2013 | 2009-02-12 | Large-scale non-Gaussian mass function and halo bias: tests on N-body simulations | The description of the abundance and clustering of halos for non-Gaussian initial conditions has recently received renewed interest, motivated by the forthcoming large galaxy and cluster surveys, which can potentially yield constraints of order unity on the non-Gaussianity parameter f_{NL}. We present tests on N-body s... | [
"astro-ph.CO"
] | null | [
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8324062 | 0902.2121 | 2009-02-12 | The 1/r singularity in weakly nonlinear fracture mechanics | Material failure by crack propagation essentially involves a concentration of large displacement-gradients near a crack's tip, even at scales where no irreversible deformation and energy dissipation occurs. This physical situation provides the motivation for a systematic gradient expansion of general nonlinear elastic ... | [
"cond-mat.mtrl-sci"
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"name": "Ariel Livne",
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18584940 | 0902.2186 | 2009-02-12 | A List of Household Objects for Robotic Retrieval Prioritized by People with ALS (Version 092008) | This technical report is designed to serve as a citable reference for the original prioritized object list that the Healthcare Robotics Lab at Georgia Tech released on its website in September of 2008. It is also expected to serve as the primary citable reference for the research associated with this list until the pub... | [
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291713 | 0902.2206 | 2009-02-12 | Feature Hashing for Large Scale Multitask Learning | Empirical evidence suggests that hashing is an effective strategy for dimensionality reduction and practical nonparametric estimation. In this paper we provide exponential tail bounds for feature hashing and show that the interaction between random subspaces is negligible with high probability. We demonstrate the feasi... | [
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"name": "Anirban Dasgupta",
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7054898 | 0902.2370 | 2009-02-13 | Outer Bounds on the Admissible Source Region for Broadcast Channels with Dependent Sources | Outer bounds on the admissible source region for broadcast channels with dependent sources are developed and used to prove capacity results for several classes of sources and channels. | [
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"name": "Yingbin Liang",
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1561352 | 0902.2367 | 2009-02-13 | Dequantizing Compressed Sensing: When Oversampling and Non-Gaussian Constraints Combine | In this paper we study the problem of recovering sparse or compressible signals from uniformly quantized measurements. We present a new class of convex optimization programs, or decoders, coined Basis Pursuit DeQuantizer of moment $p$ (BPDQ$_p$), that model the quantization distortion more faithfully than the commonly ... | [
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"name": "David [\"K.\"] Hammond",
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11878253 | 0902.2407 | 2009-02-13 | Group-Theoretic Partial Matrix Multiplication | A generalization of recent group-theoretic matrix multiplication algorithms to an analogue of the theory of partial matrix multiplication is presented. We demonstrate that the added flexibility of this approach can in some cases improve upper bounds on the exponent of matrix multiplication yielded by group-theoretic fu... | [
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"author_id": "b chen_150",
"name": "Bo Chen",
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17849131 | 0902.2341 | 2009-02-13 | Granger causality for circular variables | In this letter we discuss use of Granger causality to the analyze systems of coupled circular variables, by modifying a recently proposed method for multivariate analysis of causality. We show the application of the proposed approach on several Kuramoto systems, in particular one living on networks built by preferentia... | [
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10532243 | 0902.2406 | 2009-02-13 | Solar Interior Rotation and its Variation | This article surveys the development of observational understanding of the interior rotation of the Sun and its temporal variation over approximately forty years, starting with the 1960s attempts to determine the solar core rotation from oblateness and proceeding through the development of helioseismology to the detail... | [
"astro-ph.SR"
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14271965 | 0902.2313 | 2009-02-13 | Continuous limits of discrete perimeters | We consider a class of discrete convex functionals which satisfy a (generalized) coarea formula, and study their limit in the continuum. | [
"math.NA"
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"name": "Alessandro Giacomini",
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14547331 | 0902.2392 | 2009-02-13 | Estimating the H I gas fractions of galaxies in the local Universe | We use a sample of 800 galaxies with H I mass measurements from the HyperLeda catalogue and optical photometry from the fourth data release of the Sloan Digital Sky Survey to calibrate a new photometric estimator of the H I to-stellar mass ratio for nearby galaxies. Our estimator, which is motivated by the Kennicutt-Sc... | [
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"name": "Cheng Li",
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8717239 | 0902.2403 | 2009-02-13 | Near-IR Galaxy Counts and Evolution from the Wide-Field ALHAMBRA survey | The ALHAMBRA survey aims to cover 4 square degrees using a system of 20 contiguous, equal width, medium-band filters spanning the range 3500 A to 9700 A plus the standard JHKs filters. Here we analyze deep near-IR number counts of one of our fields (ALH08) for which we have a relatively large area (0.5 square degrees) ... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3032231 | 0902.2345 | 2009-02-13 | What's in a Message? | In this paper we present the first step in a larger series of experiments for the induction of predicate/argument structures. The structures that we are inducing are very similar to the conceptual structures that are used in Frame Semantics (such as FrameNet). Those structures are called messages and they were previous... | [
"cs.CL"
] | null | [
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{
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"name": "Stergos [\"D.\"] Afantenos",
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{
"author_id": "n hernandez_1",
"name": "Nicolas Hernandez",
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... | null |
16242069 | 0902.2477 | 2009-02-14 | Galaxy-Induced Transformation of Dark Matter Halos | We use N-body/gasdynamical LambdaCDM cosmological simulations to examine the effect of the assembly of a central galaxy on the shape and mass profile of its dark halo. Two series of simulations are compared; one that follows only the evolution of the dark matter component and a second one where a baryonic component is ... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
32876823 | 0902.2460 | 2009-02-14 | Limits on a muon flux from neutralino annihilations in the Sun with the IceCube 22-string detector | A search for muon neutrinos from neutralino annihilations in the Sun has been performed with the IceCube 22-string neutrino detector using data collected in 104.3 days of live-time in 2007. No excess over the expected atmospheric background has been observed. Upper limits have been obtained on the annihilation rate of ... | [
"astro-ph.CO",
"astro-ph.HE"
] | null | [
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] | [] | null | null |
2961022 | 0902.2559 | 2009-02-15 | Power Allocation Games for MIMO Multiple Access Channels with Coordination | A game theoretic approach is used to derive the optimal decentralized power allocation (PA) in fast fading multiple access channels where the transmitters and receiver are equipped with multiple antennas. The players (the mobile terminals) are free to choose their PA in order to maximize their individual transmission r... | [
"cs.IT",
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{
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{
"author_id": "s lasaulce_1",
"name": "Samson Lasaulce",
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"nu... | null |
17434733 | 0902.2537 | 2009-02-15 | Communication-optimal Parallel and Sequential Cholesky Decomposition | Numerical algorithms have two kinds of costs: arithmetic and communication, by which we mean either moving data between levels of a memory hierarchy (in the sequential case) or over a network connecting processors (in the parallel case). Communication costs often dominate arithmetic costs, so it is of interest to desig... | [
"cs.NA",
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"math.NA"
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] | null | null | null |
16332992 | 0902.2692 | 2009-02-16 | Combining coded signals with arbitrary modulations in orthogonal relay channels | We consider a relay channel for which the following assumptions are made. (1) The source-destination and relay-destination channels are orthogonal (frequency division relay channel). (2) The relay implements the decode-and-forward protocol. (3) The source and relay implement the same channel encoder, namely, a onvoluti... | [
"cs.IT",
"math.IT"
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{
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{
"author_id": "s lasaulce_1",
"name": "Samson Lasaulce",
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"num_papers": null... | null |
59147306 | 0902.2777 | 2009-02-16 | Resolving the mid-infrared cores of local Seyferts | We present new photometry of 16 local Seyferts including 6 Compton-thick sources in N-band filters around 12-microns, obtained with the VISIR instrument on the 8-m Very Large Telescope. The near-diffraction-limited imaging provides the least-contaminated core fluxes for these sources to date. Augmenting these with our ... | [
"astro-ph.GA",
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118751896 | 0902.2604 | 2009-02-16 | Toward the End of Stars: Discovering the Galaxy's Coldest Brown Dwarfs | This White Paper to the National Academy of Sciences Astro2010 Decadal Review Committee highlights cross-disciplinary science opportunities over the next decade with cold brown dwarfs, sources defined here as having photospheric temperatures less than ~1000 K. | [
"astro-ph.GA"
] | null | [
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{
"author_id": "a burgasser_1",
"name": "Adam [\"J.\"] Burgasser",
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},
{
"author_id": "j bloom_1",
"name": "Josh Bloom",
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"num_papers": ... | null |
45461071 | 0902.2721 | 2009-02-16 | Short-Time Enhanced Decay of Coherent Excitations in Bose-Einstein Condensates | We study, both experimentally and theoretically, short-time modifications of the decay of excitations in a Bose-Einstein Condensate (BEC) embedded in an optical lattice. Strong enhancement of the decay is observed compared to the Golden Rule results. This enhancement of decay increases with the lattice depth. It indica... | [
"cond-mat.other"
] | null | [
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] | [] | [
{
"author_id": "n bar-gill_1",
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{
"author_id": "e rowen_1",
"name": "Eitan [\"Emanuel\"] Rowen",
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"num_papers... | null |
118389052 | 0902.2596 | 2009-02-16 | Control of quantum dynamics by optimized measurements | Quantum measurements are considered for optimal control of quantum dynamics with instantaneous and continuous observations utilized to manipulate population transfer. With an optimal set of measurements, the highest yield in a two-level system can be obtained. The analytical solution is given for the problem of populat... | [
"quant-ph"
] | null | [
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{
"author_id": "s feng_2",
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"name": "Mianlai Zhou",
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374938 | 0902.2774 | 2009-02-16 | Pseudorandom Generators Against Advised Context-Free Languages | Pseudorandomness has played a central role in modern cryptography, finding theoretical and practical applications to various fields of computer science. A function that generates pseudorandom strings from shorter but truly random seeds is known as a pseudorandom generator. Our generators are designed to fool languages ... | [
"cs.FL",
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{
"author_id": "t yamakami_1",
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}
] | null |
16439711 | 0902.2791 | 2009-02-16 | Stable and Accurate Interpolation Operators for High-Order Multi-Block Finite-Difference Methods | Block-to-block interface interpolation operators are constructed for several common high-order finite difference discretizations. In contrast to conventional interpolation operators, these new interpolation operators maintain the strict stability, accuracy and conservation of the base scheme even when nonconforming gri... | [
"math.NA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16136141 | 0902.2840 | 2009-02-17 | Stellar-mass Black Hole Spin Constraints from Disk Reflection and Continuum Modeling | Accretion disk reflection spectra, including broad iron emission lines, bear the imprints of the strong Doppler shifts and gravitational red-shifts close to black holes. The extremity of these shifts depends on the proximity of the innermost stable circular orbit to the black hole, and that orbit is determined by the b... | [
"astro-ph.HE",
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18047037 | 0902.2965 | 2009-02-17 | Optimal leverage from non-ergodicity | In modern portfolio theory, the balancing of expected returns on investments against uncertainties in those returns is aided by the use of utility functions. The Kelly criterion offers another approach, rooted in information theory, that always implies logarithmic utility. The two approaches seem incompatible, too loos... | [
"q-fin.RM",
"q-fin.PM"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14182849 | 0902.3001 | 2009-02-17 | Galaxy Mergers with Adaptive Mesh Refinement: Star Formation and Hot Gas Outflow | In hierarchical structure formation, merging of galaxies is frequent and known to dramatically affect their properties. To comprehend these interactions high-resolution simulations are indispensable because of the nonlinear coupling between pc and Mpc scales. To this end, we present the first adaptive mesh refinement (... | [
"astro-ph.GA",
"astro-ph.CO"
] | null | [
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] | null | null | null |
32852130 | 0902.2924 | 2009-02-17 | Model selection for weakly dependent time series forecasting | Observing a stationary time series, we propose a two-step procedure for the prediction of the next value of the time series. The first step follows machine learning theory paradigm and consists in determining a set of possible predictors as randomized estimators in (possibly numerous) different predictive models. The s... | [
"stat.ME",
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16405447 | 0902.3014 | 2009-02-17 | Fano resonances in nanoscale structures | Nowadays nanotechnology allows to scale-down various important devices (sensors, chips, fibres, etc), and, thus, opens up new horizon for their applications. Nevertheless, the efficiency most of them is still based on the fundamental physical phenomena, such as resonances. Thus, the understanding of the resonance pheno... | [
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17816654 | 0902.2999 | 2009-02-17 | Lyman Alpha Blobs as an Observational Signature of Cold Accretion Streams into Galaxies | Recent hydrodynamic simulations of galaxy formation reveal streams of cold (T ~ 1e4 K) gas flowing into the centers of dark matter halos as massive as 1e12-1e13.5 M_sun at redshifts z~1-3. In this paper we show that if > 20% of the gravitational binding energy of the gas is radiated away, then the simulated cold flows ... | [
"astro-ph.CO"
] | null | [
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] | null | null | null |
18241364 | 0902.2882 | 2009-02-17 | Lyman Alpha Emitters in Hierarchical Galaxy Formation II. UV Continuum Luminosity Function and Equivalent Width Distribution | We present theoretical predictions of UV continuum luminosity function (UV LF) and Lya equivalent width (EW) distribution of Lyman alpha emitters (LAEs) in the framework of the hierarchical clustering model of galaxy formation. The model parameters about LAEs were determined by fitting to the observed Lya LF at z=5.7 i... | [
"astro-ph.CO"
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] | null | null | null |
9951971 | 0902.2841 | 2009-02-17 | Buckling transition and boundary layer in non-Euclidean plates | Non-Euclidean plates are thin elastic bodies having no stress-free configuration, hence exhibiting residual stresses in the absence of external constraints. These bodies are endowed with a three-dimensional reference metric, which may not necessarily be immersible in physical space. Here, based on a recently developed ... | [
"cond-mat.soft"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13087601 | 0902.2866 | 2009-02-17 | Collective dynamics of social annotation | The enormous increase of popularity and use of the WWW has led in the recent years to important changes in the ways people communicate. An interesting example of this fact is provided by the now very popular social annotation systems, through which users annotate resources (such as web pages or digital photographs) wit... | [
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... | null |
118397788 | 0902.2957 | 2009-02-17 | Experimental Uhrig Dynamical Decoupling using Trapped Ions | We present a detailed experimental study of the Uhrig Dynamical Decoupling (UDD) sequence in a variety of noise environments. Our qubit system consists of a crystalline array of $^{9}$Be$^{+}$ ions confined in a Penning trap. We use an electron-spin-flip transition as our qubit manifold and drive qubit rotations using ... | [
"quant-ph"
] | null | [
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{
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{
"author_id": "h uys_1",
"name": "Hermann Uys",
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12210 | 0902.3176 | 2009-02-18 | Error-Correcting Tournaments | We present a family of pairwise tournaments reducing $k$-class classification to binary classification. These reductions are provably robust against a constant fraction of binary errors. The results improve on the PECOC construction \cite{SECOC} with an exponential improvement in computation, from $O(k)$ to $O(\log_2 k... | [
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14846549 | 0902.3060 | 2009-02-18 | Likelihood-based inference for max-stable processes | The last decade has seen max-stable processes emerge as a common tool for the statistical modeling of spatial extremes. However, their application is complicated due to the unavailability of the multivariate density function, and so likelihood-based methods remain far from providing a complete and flexible framework fo... | [
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{
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{
"author_id": "m ribatet_1",
"name": "Mathieu Ribatet",
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5099331 | 0902.3210 | 2009-02-18 | Coverage in Multi-Antenna Two-Tier Networks | In two-tier networks -- comprising a conventional cellular network overlaid with shorter range hotspots (e.g. femtocells, distributed antennas, or wired relays) -- with universal frequency reuse, the near-far effect from cross-tier interference creates dead spots where reliable coverage cannot be guaranteed to users in... | [
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"... | null |
17324347 | 0902.3126 | 2009-02-18 | Bi-Lipschitz approximation by finite-dimensional imbeddings | We show that the Kuratowski imbedding of a Riemannian manifold in L^\infty, exploited in Gromov's proof of the systolic inequality for essential manifolds, admits an approximation by a (1+C)-bi-Lipschitz (onto its image), finite-dimensional imbedding for every C>0. Our key tool is the first variation formula thought of... | [
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"math.LO"
] | null | [
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] | null | null | null |
15417856 | 0902.3178 | 2009-02-18 | Multiple Multicasts with the Help of a Relay | The problem of simultaneous multicasting of multiple messages with the help of a relay terminal is considered. In particular, a model is studied in which a relay station simultaneously assists two transmitters in multicasting their independent messages to two receivers. The relay may also have an independent message of... | [
"cs.IT",
"math.IT"
] | null | [
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{
"author_id": "d gündüz_1",
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"name": "Osvaldo Simeone",
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... | null |
7732389 | 0902.3034 | 2009-02-18 | Quantum theory of optical temporal phase and instantaneous frequency. II. Continuous time limit and state-variable approach to phase-locked loop design | We consider the continuous-time version of our recently proposed quantum theory of optical temporal phase and instantaneous frequency [Tsang, Shapiro, and Lloyd, Phys. Rev. A 78, 053820 (2008)]. Using a state-variable approach to estimation, we design homodyne phase-locked loops that can measure the temporal phase with... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118271059 | 0902.3091 | 2009-02-18 | 21 cm Intensity Mapping | Using the 21 cm line, observed all-sky and across the redshift range from 0 to 5, the large scale structure of the Universe can be mapped in three dimensions. This can be accomplished by studying specific intensity with resolution ~ 10 Mpc, rather than via the usual galaxy redshift survey. The data set can be analyzed ... | [
"astro-ph.IM",
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{
"author_id": "j peterson_1",
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{
"author_id": "r aleksan_1",
"name": "R. Aleksan",
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265095584 | 0902.3160 | 2009-02-18 | Traffic Fluctuations on Weighted Networks | Traffic fluctuation has so far been studied on unweighted networks. However many real traffic systems are better represented as weighted networks, where nodes and links are assigned a weight value representing their physical properties such as capacity and delay. Here we introduce a general random diffusion (GRD) model... | [
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{
"author_id": "y zhang_145",
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"name": "Shi Zhou",
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6372549 | 0902.3286 | 2009-02-19 | MDS codes on the erasure-erasure wiretap channel | This paper considers the problem of perfectly secure communication on a modified version of Wyner's wiretap channel II where both the main and wiretapper's channels have some erasures. A secret message is to be encoded into $n$ channel symbols and transmitted. The main channel is such that the legitimate receiver recei... | [
"cs.IT",
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] | null | [
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] | null | null | null |
6178817 | 0902.3430 | 2009-02-19 | Domain Adaptation: Learning Bounds and Algorithms | This paper addresses the general problem of domain adaptation which arises in a variety of applications where the distribution of the labeled sample available somewhat differs from that of the test data. Building on previous work by Ben-David et al. (2007), we introduce a novel distance between distributions, discrepan... | [
"cs.LG",
"cs.AI"
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{
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"name": "Mehryar Mohri",
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"n... | null |
15888830 | 0902.3440 | 2009-02-19 | Curves defined by Chebyshev polynomials | Working over a field $\kk$ of characteristic zero, this paper studies line embeddings of the form $\phi = (T_i,T_j,T_k):\A^1\to\A^3$, where $T_n$ denotes the degree $n$ Chebyshev polynomial of the first kind. In {\it Section 4}, it is shown that (1) $\phi$ is an embedding if and only if the pairwise greatest common div... | [
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18411281 | 0902.3456 | 2009-02-19 | On the valuation of compositions in L\'evy term structure models | We derive explicit valuation formulae for an exotic path-dependent interest rate derivative, namely an option on the composition of LIBOR rates. The formulae are based on Fourier transform methods for option pricing. We consider two models for the evolution of interest rates: an HJM-type forward rate model and a LIBOR-... | [
"q-fin.PR",
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{
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"name": "Antonis Papapantoleon",
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14195019 | 0902.3485 | 2009-02-19 | Pricing strategies for viral marketing on Social Networks | We study the use of viral marketing strategies on social networks to maximize revenue from the sale of a single product. We propose a model in which the decision of a buyer to buy the product is influenced by friends that own the product and the price at which the product is offered. The influence model we analyze is q... | [
"cs.DS",
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] | null | [
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] | null | null | null |
14942224 | 0902.3453 | 2009-02-19 | Escaping the curse of dimensionality with a tree-based regressor | We present the first tree-based regressor whose convergence rate depends only on the intrinsic dimension of the data, namely its Assouad dimension. The regressor uses the RPtree partitioning procedure, a simple randomized variant of k-d trees. | [
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{
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] | null |
115173391 | 0902.3352 | 2009-02-19 | A (rough) pathwise approach to a class of non-linear stochastic partial differential equations | We consider nonlinear parabolic evolution equations of the form $\partial_{t}u=F(t,x,Du,D^{2}u) $, subject to noise of the form $H(x,Du) \circ dB$ where $H$ is linear in $Du$ and $\circ dB$ denotes the Stratonovich differential of a multidimensional Brownian motion. Motivated by the essentially pathwise results of [Lio... | [
"math.AP",
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9321596 | 0902.3526 | 2009-02-19 | Online Multi-task Learning with Hard Constraints | We discuss multi-task online learning when a decision maker has to deal simultaneously with M tasks. The tasks are related, which is modeled by imposing that the M-tuple of actions taken by the decision maker needs to satisfy certain constraints. We give natural examples of such restrictions and then discuss a general ... | [
"stat.ML",
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"math.ST",
"stat.TH"
] | null | [
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] | null | null | null |
158734 | 0902.3347 | 2009-02-19 | Lanczos Approximations for the Speedup of Kernel Partial Least Squares Regression | The runtime for Kernel Partial Least Squares (KPLS) to compute the fit is quadratic in the number of examples. However, the necessity of obtaining sensitivity measures as degrees of freedom for model selection or confidence intervals for more detailed analysis requires cubic runtime, and thus constitutes a computationa... | [
"stat.ML"
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{
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"name": "Masashi Sugiyama",
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16070445 | 0902.3668 | 2009-02-20 | The Extragalactic Distance Database | A database can be accessed on the web at http://edd.ifa.hawaii.edu that was developed to promote access to information related to galaxy distances. The database has three functional components. First, tables from many literature sources have been gathered and enhanced with links through a distinct galaxy naming convent... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17438376 | 0902.3682 | 2009-02-20 | Albedos of Main-Belt Comets 133P/Elst-Pizarro and 176P/LINEAR | We present the determination of the geometric R-band albedos of two main-belt comet nuclei based on data from the Spitzer Space Telescope and a number of ground-based optical facilities. For 133P/Elst-Pizarro, we find an albedo of p_R=0.05+/-0.02 and an effective radius of r_e=1.9+/-0.3 km (estimated semi-axes of a~2.3... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
4259251 | 0902.3527 | 2009-02-20 | Fast transport optimization for Monge costs on the circle | Consider the problem of optimally matching two measures on the circle, or equivalently two periodic measures on the real line, and suppose the cost of matching two points satisfies the Monge condition. We introduce a notion of locally optimal transport plan, motivated by the weak KAM (Aubry-Mather) theory, and show tha... | [
"math.OC"
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{
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"author_id": "j salomon_1",
"name": "Julien Salomon",
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... | null |
12267034 | 0902.3643 | 2009-02-20 | A Fourier transform method for spread option pricing | Spread options are a fundamental class of derivative contract written on multiple assets, and are widely used in a range of financial markets. There is a long history of approximation methods for computing such products, but as yet there is no preferred approach that is accurate, efficient and flexible enough to apply ... | [
"q-fin.CP",
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] | null | [
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] | null | null | null |
15727705 | 0902.3675 | 2009-02-20 | The Extragalactic Distance Database: Color-Magnitude Diagrams | The CMDs/TRGB (Color-Magnitude Diagrams/Tip of the Red Giant Branch) section of the Extragalactic Distance Database contains a compilation of observations of nearby galaxies from the Hubble Space Telescope. Approximately 250 (and increasing) galaxies in the Local Volume have CMDs and the stellar photometry tables used ... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6412962 | 0902.3549 | 2009-02-20 | Deaf, Dumb, and Chatting Robots, Enabling Distributed Computation and Fault-Tolerance Among Stigmergic Robot | We investigate ways for the exchange of information (explicit communication) among deaf and dumb mobile robots scattered in the plane. We introduce the use of movement-signals (analogously to flight signals and bees waggle) as a mean to transfer messages, enabling the use of distributed algorithms among the robots. We ... | [
"cs.MA",
"nlin.AO"
] | null | [
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{
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"author_id": "s dolev_1",
"name": "Shlomi Dolev",
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... | null |
16106908 | 0902.3583 | 2009-02-20 | A better algorithm for random k-SAT | Let F be a uniformly distributed random k-SAT formula with n variables and m clauses. We present a polynomial time algorithm that finds a satisfying assignment of F with high probability for constraint densities m/n<(1-eps_k)2^k\ln(k)/k, where eps_k->0. Previously no efficient algorithm was known to find solutions with... | [
"math.CO",
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] | null | [
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] | null | null | null |
16576818 | 0902.3689 | 2009-02-21 | The broad H-alpha, [O III] line wings in stellar supercluster A of NGC2363 and the turbulent mixing layer hypothesis | Context. SuperclusterA in the extragalactic HII region NGC2363 is remarkable for the hypersonic gas seen as faint extended broad emission lines with a full width zero intensity of 7000km/s. Aims. We explore the possibility that the observed broad profiles are the result of the interaction of a high velocity cluster win... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11760337 | 0902.3702 | 2009-02-21 | Cosmological Constraints from the SDSS maxBCG Cluster Catalog | We use the abundance and weak lensing mass measurements of the SDSS maxBCG cluster catalog to simultaneously constrain cosmology and the richness--mass relation of the clusters. Assuming a flat \LambdaCDM cosmology, we find \sigma_8(\Omega_m/0.25)^{0.41} = 0.832\pm 0.033 after marginalization over all systematics. In c... | [
"astro-ph.CO"
] | null | [
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] | null | null | null |
18696531 | 0902.3742 | 2009-02-21 | Diffusion-induced instability and chaos in random oscillator networks | We demonstrate that diffusively coupled limit-cycle oscillators on random networks can exhibit various complex dynamical patterns. Reducing the system to a network analog of the complex Ginzburg-Landau equation, we argue that uniform oscillations can be linearly unstable with respect to spontaneous phase modulations du... | [
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] | null | [
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] | null | null | null |
6859859 | 0902.3757 | 2009-02-21 | Bounded Independence Fools Halfspaces | We show that any distribution on {-1,1}^n that is k-wise independent fools any halfspace h with error \eps for k = O(\log^2(1/\eps) /\eps^2). Up to logarithmic factors, our result matches a lower bound by Benjamini, Gurel-Gurevich, and Peled (2007) showing that k = \Omega(1/(\eps^2 \cdot \log(1/\eps))). Using standard ... | [
"cs.CC"
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117903938 | 0902.3830 | 2009-02-22 | 4D, N = 1 Supersymmetry Genomics (I) | Presented in this paper the nature of the supersymmetrical representation theory behind 4D, N = 1 theories, as described by component fields, is investigated using the tools of Adinkras and Garden Algebras. A survey of familiar matter multiplets using these techniques reveals they are described by two fundamental valis... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5867635 | 0902.3846 | 2009-02-22 | Uniqueness of Low-Rank Matrix Completion by Rigidity Theory | The problem of completing a low-rank matrix from a subset of its entries is often encountered in the analysis of incomplete data sets exhibiting an underlying factor model with applications in collaborative filtering, computer vision and control. Most recent work had been focused on constructing efficient algorithms fo... | [
"cs.LG"
] | null | [
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] | null | null | null |
10744662 | 0902.3770 | 2009-02-22 | A Generalization of the Erd\"{o}s-Ko-Rado Theorem | In this note, we investigate some properties of local Kneser graphs defined in [8]. In this regard, as a generalization of the Erd${\rm \ddot{o}}$s-Ko-Rado theorem, we characterize the maximum independent sets of local Kneser graphs. Next, we present an upper bound for their chromatic number. | [
"math.CO"
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"name": "Hossein Hajiabolhassan",
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1426856 | 0902.3788 | 2009-02-22 | Communities in Networks | We survey some of the concepts, methods, and applications of community detection, which has become an increasingly important area of network science. To help ease newcomers into the field, we provide a guide to available methodology and open problems, and discuss why scientists from diverse backgrounds are interested i... | [
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8382255 | 0902.3796 | 2009-02-22 | The Origin of the Universe as Revealed Through the Polarization of the Cosmic Microwave Background | Modern cosmology has sharpened questions posed for millennia about the origin of our cosmic habitat. The age-old questions have been transformed into two pressing issues primed for attack in the coming decade: How did the Universe begin? and What physical laws govern the Universe at the highest energies? The clearest w... | [
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{
"author_id": "r easther_1",
"name": "Richard Easther",
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16322824 | 0902.3955 | 2009-02-23 | Fluctuations and response of nonequilibrium states | A generalized fluctuation-response relation is found for thermal systems driven out of equilibrium. Its derivation is independent of many details of the dynamics, which is only required to be first-order. The result gives a correction to the equilibrium fluctuation-dissipation theorem, in terms of the correlation betwe... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9256906 | 0902.4045 | 2009-02-23 | Sparse Recovery of Positive Signals with Minimal Expansion | We investigate the sparse recovery problem of reconstructing a high-dimensional non-negative sparse vector from lower dimensional linear measurements. While much work has focused on dense measurement matrices, sparse measurement schemes are crucial in applications, such as DNA microarrays and sensor networks, where den... | [
"cs.IT",
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] | null | [
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{
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{
"author_id": "a dimakis_1",
"name": "Alexandros [\"G.\"] Dimakis",
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"h_index": n... | null |
15094739 | 0902.3982 | 2009-02-23 | X-ray Polarization from Accreting Black Holes: II. The Thermal State | We present new calculations of X-ray polarization from black hole (BH) accretion disks in the thermally-dominated state, using a Monte-Carlo ray-tracing code in full general relativity. In contrast to many previously published studies, our approach allows us to include returning radiation that is deflected by the stron... | [
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{
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{
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{
"author_id": "j krolik_1",
"name": "Julian [\"H.\"] Krolik",
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... | null |
5708384 | 0902.3925 | 2009-02-23 | Systematic fluctuation expansion for neural network activity equations | Population rate or activity equations are the foundation of a common approach to modeling for neural networks. These equations provide mean field dynamics for the firing rate or activity of neurons within a network given some connectivity. The shortcoming of these equations is that they take into account only the avera... | [
"q-bio.NC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18362522 | 0902.3944 | 2009-02-23 | On Stochastic Model Predictive Control with Bounded Control Inputs | This paper is concerned with the problem of Model Predictive Control and Rolling Horizon Control of discrete-time systems subject to possibly unbounded random noise inputs, while satisfying hard bounds on the control inputs. We use a nonlinear feedback policy with respect to noise measurements and show that the resulti... | [
"math.OC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11347166 | 0902.3913 | 2009-02-23 | Trigonometric Parallaxes of Massive Star Forming Regions: VI. Galactic Structure, Fundamental Parameters and Non-Circular Motions | We are using the VLBA and the Japanese VERA project to measure trigonometric parallaxes and proper motions of masers found in high-mass star-forming regions across the Milky Way. Early results from 18 sources locate several spiral arms. The Perseus spiral arm has a pitch angle of 16 +/- 3 degrees, which favors four rat... | [
"astro-ph.GA",
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7540148 | 0902.3837 | 2009-02-23 | Innovated higher criticism for detecting sparse signals in correlated noise | Higher criticism is a method for detecting signals that are both sparse and weak. Although first proposed in cases where the noise variables are independent, higher criticism also has reasonable performance in settings where those variables are correlated. In this paper we show that, by exploiting the nature of the cor... | [
"math.ST",
"math.SP",
"stat.ME",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118662616 | 0902.3834 | 2009-02-23 | Constraining relativistic viscous hydrodynamical evolution | We show that by requiring positivity of the longitudinal pressure it is possible to constrain the initial conditions one can use in 2nd-order viscous hydrodynamical simulations of ultrarelativistic heavy-ion collisions. We demonstrate this explicitly for 0+1 dimensional viscous hydrodynamics and discuss how the constra... | [
"hep-ph",
"nucl-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18048767 | 0902.3981 | 2009-02-23 | The Impact of the Astro2010 Recommendations on Variable Star Science | The next decade of survey astronomy has the potential to transform our knowledge of variable stars. Stellar variability underpins our knowledge of the cosmological distance ladder, and provides direct tests of stellar formation and evolution theory. Variable stars can also be used to probe the fundamental physics of gr... | [
"astro-ph.SR"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "l walkowicz_1",
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{
"author_id": "a becker_8",
"name": "Andrew [\"C.\"] Becker",
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... | null |
14069655 | 0902.4026 | 2009-02-23 | Inverse boundary value problem for Maxwell equations with local data | We prove a uniqueness theorem for an inverse boundary value problem for the Maxwell system with boundary data assumed known only in part of the bound- ary. We assume that the inaccessible part of the boundary is either part of a plane, or part of a sphere. This work generalizes the results obtained by Isakov for the Sc... | [
"math.AP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8799552 | 0902.3657 | 2009-02-23 | Spectral Dimension of the Universe in Quantum Gravity at a Lifshitz Point | We extend the definition of "spectral dimension" (usually defined for fractal and lattice geometries) to theories on smooth spacetimes with anisotropic scaling. We show that in quantum gravity dominated by a Lifshitz point with dynamical critical exponent z in D+1 spacetime dimensions, the spectral dimension of spaceti... | [
"hep-th",
"gr-qc",
"hep-lat",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15855827 | 0902.3971 | 2009-02-23 | New Multiply-Lensed Galaxies Identified in ACS/NIC3 Observations of Cl0024+1654 Using an Improved Mass Model | We present an improved strong-lensing analysis of Cl0024+1654 ($z$=0.39) using deep HST/ACS/NIC3 images, based on 33 multiply-lensed images of 11 background galaxies. These are found with a model that assumes mass approximately traces light, with a low order expansion to allow for flexibility on large scales. The model... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17862521 | 0902.4182 | 2009-02-24 | Spectroscopic Analysis of DA White Dwarfs: Stark Broadening of Hydrogen Lines Including Non-Ideal Effects | We present improved calculations for the Stark broadening of hydrogen lines in dense plasmas typical of white dwarf atmospheres. Our new model is based on the unified theory of Stark broadening from Vidal, Cooper, & Smith. For the first time, we account for the non-ideal effects in a consistent way directly inside the ... | [
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14879958 | 0902.4154 | 2009-02-24 | EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions | We present a next-to-leading order (NLO) global DGLAP analysis of nuclear parton distribution functions (nPDFs) and their uncertainties. Carrying out an NLO nPDF analysis for the first time with three different types of experimental input -- deep inelastic $\ell$+A scattering, Drell-Yan dilepton production in p+$A$ col... | [
"hep-ph",
"nucl-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15727035 | 0902.4010 | 2009-02-24 | Real-time gauge/gravity duality and ingoing boundary conditions | In arXiv:0805.0150 [hep-th] and arXiv:0812.2909 [hep-th] a general prescription was presented for the computation of real-time correlation functions using the gauge/gravity duality. I apply this prescription to the specific case of retarded thermal correlation functions and derive the usual ingoing boundary conditions ... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118375886 | 0902.4151 | 2009-02-24 | Factorization of quantum charge transport for non-interacting fermions | We show that the statistics of the charge transfer of non-interacting fermions through a two-lead contact is generalized binomial, at any temperature and for any form of the scattering matrix: an arbitrary charge-transfer process can be decomposed into independent single-particle events. This result generalizes previou... | [
"cond-mat.mes-hall"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a abanov_1",
"name": "Alexander [\"G.\"] Abanov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "d ivanov_1",
"name": "Dmitri [\"A.\"] Ivanov",
"publication_history": null,
"h_index": null,
"n... | null |
43509791 | 0902.4193 | 2009-02-24 | Optimal Control at the Quantum Speed Limit | Optimal control theory is a promising candidate for a drastic improvement of the performance of quantum information tasks. We explore its ultimate limit in paradigmatic cases, and demonstrate that it coincides with the maximum speed limit allowed by quantum evolution (the quantum speed limit). | [
"quant-ph",
"cond-mat.other"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17955675 | 0902.4099 | 2009-02-24 | Lie symmetries and exact solutions of the barotropic vorticity equation | Lie group methods are used for the study of various issues related to symmetries and exact solutions of the barotropic vorticity equation. The Lie symmetries of the barotropic vorticity equations on the $f$- and $\beta$-planes, as well as on the sphere in rotating and rest reference frames, are determined. A symmetry b... | [
"math-ph",
"math.MP",
"physics.flu-dyn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14548836 | 0902.4173 | 2009-02-24 | Monopole operators in N=4 Chern-Simons theories and wrapped M2-branes | Monopole operators in Abelian N=4 Chern-Simons theories described by circular quiver diagrams are investigated. The magnetic charges of non-diagonal U(1) gauge symmetries form the SU(p)xSU(q) root lattice where p and q are numbers of untwisted and twisted hypermultiplets, respectively. For monopole operators correspond... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5990578 | 0902.4185 | 2009-02-24 | Quiet Planting in the Locked Constraint Satisfaction Problems | We study the planted ensemble of locked constraint satisfaction problems. We describe the connection between the random and planted ensembles. The use of the cavity method is combined with arguments from reconstruction on trees and first and second moment considerations; in particular the connection with the reconstruc... | [
"cond-mat.stat-mech",
"cond-mat.dis-nn",
"cs.CC"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "6096252",
"num_citations": null
},
{
"corpus_id": "28326060",
"num_citations": null
},
{
"corpus_id": "2592206",
"num_citations": null
}
] | [
{
"author_id": "l zdeborová_1",
"name": "Lenka Zdeborová",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "f krzakala_1",
"name": "Florent Krzakala",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
15588399 | 0902.4058 | 2009-02-24 | On the Bennett-Hoeffding inequality | The well-known Bennett-Hoeffding bound for sums of independent random variables is refined, by taking into account truncated third moments, and at that also improved by using, instead of the class of all increasing exponential functions, the much larger class of all generalized moment functions f such that f and f" are... | [
"math.PR",
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12419918 | 0902.4162 | 2009-02-24 | A Smoking Gun in the Carina Nebula | The Carina Nebula is one of the youngest, most active sites of massive star formation in our Galaxy. In this nebula, we have discovered a bright X-ray source that has persisted for ~30 years. The soft X-ray spectrum, consistent with kT ~128 eV blackbody radiation with mild extinction, and no counterpart in the near- an... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118507206 | 0902.4238 | 2009-02-24 | X-ray Timing of Stellar Mass Black Holes | X-ray timing observations of accreting stellar mass black holes have shown that they can produce signals with such short time scales that we must be probing very close to the innermost stable circular orbit that is predicted by the theory of General Relativity (GR). These signals are quasi-periodic oscillations (QPOs),... | [
"astro-ph.HE"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j tomsick_1",
"name": "John [\"A.\"] Tomsick",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r remillard_1",
"name": "Ronald [\"A.\"] Remillard",
"publication_history": null,
"h_index": null,
... | null |
2844500 | 0902.4228 | 2009-02-24 | Multiplicative updates For Non-Negative Kernel SVM | We present multiplicative updates for solving hard and soft margin support vector machines (SVM) with non-negative kernels. They follow as a natural extension of the updates for non-negative matrix factorization. No additional param- eter setting, such as choosing learning, rate is required. Ex- periments demonstrate r... | [
"cs.LG"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v potluru_1",
"name": "Vamsi [\"K.\"] Potluru",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "s plis_1",
"name": "S. Plis",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
2477322 | 0902.4291 | 2009-02-25 | From Theory to Practice: Sub-Nyquist Sampling of Sparse Wideband Analog Signals | Conventional sub-Nyquist sampling methods for analog signals exploit prior information about the spectral support. In this paper, we consider the challenging problem of blind sub-Nyquist sampling of multiband signals, whose unknown frequency support occupies only a small portion of a wide spectrum. Our primary design g... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14787934 | 0902.4240 | 2009-02-25 | Measuring the galaxy-mass and galaxy-dust correlations through magnification and reddening | We present a simultaneous detection of gravitational magnification and dust reddening effects due to galactic halos and large-scale structure. The measurement is based on correlating the brightness of ~85,000 quasars at z>1 with the position of 20 million galaxies at z~0.3 derived from the Sloan Digital Sky Survey and ... | [
"astro-ph.CO",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2589486 | 0902.4394 | 2009-02-25 | Circulant and Toeplitz matrices in compressed sensing | Compressed sensing seeks to recover a sparse vector from a small number of linear and non-adaptive measurements. While most work so far focuses on Gaussian or Bernoulli random measurements we investigate the use of partial random circulant and Toeplitz matrices in connection with recovery by $\ell_1$-minization. In con... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "h rauhut_1",
"name": "Holger Rauhut",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
16443693 | 0902.4344 | 2009-02-25 | Smoothing splines estimators for functional linear regression | The paper considers functional linear regression, where scalar responses $Y_1,...,Y_n$ are modeled in dependence of random functions $X_1,...,X_n$. We propose a smoothing splines estimator for the functional slope parameter based on a slight modification of the usual penalty. Theoretical analysis concentrates on the er... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14625359 | 0902.4457 | 2009-02-25 | Photometric and spectroscopic detection of the primary transit of the 111-day-period planet HD 80606 b | We report the detection of the primary transit of the extra-solar planet HD 80606 b, thanks to photometric and spectroscopic observations performed at Observatoire de Haute-Provence, simultaneously with the CCD camera at the 120-cm telescope and the SOPHIE spectrograph at the 193-cm telescope. We observed the whole egr... | [
"astro-ph.EP",
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14299167 | 0902.4315 | 2009-02-25 | Main-Belt Comet P/2008 R1 (Garradd) | We present a study of the newly-discovered main-belt comet P/2008 R1 (Garradd), an object with the dynamical characteristics of an asteroid and the physical characteristics of a comet. Photometry sets a limit to the effective radius of the nucleus at r_e < 0.7 km (red geometric albedo 0.05 assumed). The coma shows a se... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8155675 | 0902.4250 | 2009-02-25 | Fundamental limit of sample generalized eigenvalue based detection of signals in noise using relatively few signal-bearing and noise-only samples | The detection problem in statistical signal processing can be succinctly formulated: Given m (possibly) signal bearing, n-dimensional signal-plus-noise snapshot vectors (samples) and N statistically independent n-dimensional noise-only snapshot vectors, can one reliably infer the presence of a signal? This problem aris... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2709427 | 0902.4616 | 2009-02-26 | Detection of a transit by the planetary companion of HD 80606 | We report the detection of a transit egress by the ~ 3.9-Jupiter-mass planet HD 80606b, an object in a highly-eccentric orbit (e ~ 0.93) about its parent star of approximately solar type. The astrophysical reality of the signal of variability in HD 80606 is confirmed by observation with two independent telescope system... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7138308 | 0902.4495 | 2009-02-26 | Asymptotic coupling and a weak form of Harris' theorem with applications to stochastic delay equations | There are many Markov chains on infinite dimensional spaces whose one-step transition kernels are mutually singular when starting from different initial conditions. We give results which prove unique ergodicity under minimal assumptions on one hand and the existence of a spectral gap under conditions reminiscent of Har... | [
"math.PR",
"math.DS"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "2417861",
"num_citations": null
},
{
"corpus_id": "18595968",
"num_citations": null
},
{
"corpus_id": "16108005",
"num_citations": null
}
] | [
{
"author_id": "m hairer_1",
"name": "Martin Hairer",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j mattingly_1",
"name": "Jonathan [\"C.\"] Mattingly",
"publication_history": null,
"h_index": null,
"num_p... | null |
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