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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118412262 | 0912.1201 | 2009-12-07 | Simulations of the grand design galaxy M51: a case study for analysing tidally induced spiral structure | We present hydrodynamical models of the grand design spiral M51 (NGC 5194), and its interaction with its companion NGC 5195. Despite the simplicity of our models, our simulations capture the present day spiral structure of M51 remarkably well, and even reproduce details such as a kink along one spiral arm, and spiral a... | [
"astro-ph.GA"
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119190395 | 0912.1590 | 2009-12-08 | The Effect of Mass Ratio on the Morphology and Time-scales of Disc Galaxy Mergers | The majority of galaxy mergers are expected to be minor mergers. The observational signatures of minor mergers are not well understood, thus there exist few constraints on the minor merger rate. This paper seeks to address this gap in our understanding by determining if and when minor mergers exhibit disturbed morpholo... | [
"astro-ph.CO"
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115167269 | 0912.1502 | 2009-12-08 | Border bases and order ideals: a polyhedral characterization | Border bases arise as a canonical generalization of Gr\"obner bases. We provide a polyhedral characterization of all order ideals (and hence border bases) that are supported by a zero-dimensional ideal: order ideals that support a border basis correspond one-to-one to integral points of the order ideal polytope. In par... | [
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"name": "Sebastian Pokutta",
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6533048 | 0912.1406 | 2009-12-08 | Proposal for manipulating and detecting spin and orbital states of trapped electrons on helium using cavity quantum electrodynamics | We propose to couple an on-chip high finesse superconducting cavity to the lateral-motion and spin state of a single electron trapped on the surface of superfluid helium. We estimate the motional coherence times to exceed 15 microseconds, while energy will be coherently exchanged with the cavity photons in less than 10... | [
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153583 | 0912.1586 | 2009-12-08 | Dynamic Trees for Learning and Design | Dynamic regression trees are an attractive option for automatic regression and classification with complicated response surfaces in on-line application settings. We create a sequential tree model whose state changes in time with the accumulation of new data, and provide particle learning algorithms that allow for the e... | [
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"name": "Robert [\"B.\"] Gramacy",
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10300973 | 0912.1618 | 2009-12-08 | Hyper-sparse optimal aggregation | In this paper, we consider the problem of "hyper-sparse aggregation". Namely, given a dictionary $F = \{f_1, ..., f_M \}$ of functions, we look for an optimal aggregation algorithm that writes $\tilde f = \sum_{j=1}^M \theta_j f_j$ with as many zero coefficients $\theta_j$ as possible. This problem is of particular int... | [
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118494721 | 0912.1338 | 2009-12-08 | On the Stellar Populations and Evolution of Star-Forming Galaxies at 6.3 < z < 8.6 | We study the physical characteristics of galaxies at 6.3 < z < 8.6, selected from deep near-infrared imaging with the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. Accounting for the photometric scatter using simulations, galaxies at z ~ 7 have bluer UV colors compared to typical local starburst galax... | [
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8976405 | 0912.1411 | 2009-12-08 | Three notions of tropical rank for symmetric matrices | We introduce and study three different notions of tropical rank for symmetric and dissimilarity matrices in terms of minimal decompositions into rank 1 symmetric matrices, star tree matrices, and tree matrices. Our results provide a close study of the tropical secant sets of certain nice tropical varieties, including t... | [
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119252191 | 0912.1342 | 2009-12-08 | Jet Trimming | Initial state radiation, multiple interactions, and event pileup can contaminate jets and degrade event reconstruction. Here we introduce a procedure, jet trimming, designed to mitigate these sources of contamination in jets initiated by light partons. This procedure is complimentary to existing methods developed for b... | [
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6480428 | 0912.1623 | 2009-12-08 | Subgraph Sparsification and Nearly Optimal Ultrasparsifiers | We consider a variation of the spectral sparsification problem where we are required to keep a subgraph of the original graph. Formally, given a union of two weighted graphs $G$ and $W$ and an integer $k$, we are asked to find a $k$-edge weighted graph $W_k$ such that $G+W_k$ is a good spectral sparsifer of $G+W$. We w... | [
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1453547 | 0912.1457 | 2009-12-08 | A survey on algorithmic aspects of modular decomposition | The modular decomposition is a technique that applies but is not restricted to graphs. The notion of module naturally appears in the proofs of many graph theoretical theorems. Computing the modular decomposition tree is an important preprocessing step to solve a large number of combinatorial optimization problems. Sinc... | [
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415104 | 0912.1627 | 2009-12-08 | Accumulation of driver and passenger mutations during tumor progression | Major efforts to sequence cancer genomes are now occurring throughout the world. Though the emerging data from these studies are illuminating, their reconciliation with epidemiologic and clinical observations poses a major challenge. In the current study, we provide a novel mathematical model that begins to address thi... | [
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7408907 | 0912.1628 | 2009-12-08 | KF-CS: Compressive Sensing on Kalman Filtered Residual | We consider the problem of recursively reconstructing time sequences of sparse signals (with unknown and time-varying sparsity patterns) from a limited number of linear incoherent measurements with additive noise. The idea of our proposed solution, KF CS-residual (KF-CS) is to replace compressed sensing (CS) on the obs... | [
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5383237 | 0912.1588 | 2009-12-08 | Self-organizing urban transportation systems | Urban transportation is a complex phenomenon. Since many agents are constantly interacting in parallel, it is difficult to predict the future state of a transportation system. Because of this, optimization techniques tend to give obsolete solutions, as the problem changes before it can be optimized. An alternative lies... | [
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62832649 | 0912.1571 | 2009-12-08 | Evidence for a Black Hole Remnant in the Type IIL Supernova 1979C | We present an analysis of archival X-ray observations of the Type IIL supernova SN 1979C. We find that its X-ray luminosity is remarkably constant at (6.5+/-0.1) x 10^38 erg/s over a period of 12 years between 1995 and 2007. The high and steady luminosity is considered as possible evidence for a stellar-mass (~ 5-10Msu... | [
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53332336 | 0912.1868 | 2009-12-09 | Fermi Large Area Telescope Observations of the Cosmic-Ray Induced gamma-ray Emission of the Earth's Atmosphere | We report on measurements of the cosmic-ray induced gamma-ray emission of Earth's atmosphere by the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope. The LAT has observed the Earth during its commissioning phase and with a dedicated Earth-limb following observation in September 2008. These measurements ... | [
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13855952 | 0912.1883 | 2009-12-09 | The Bellman equation for power utility maximization with semimartingales | We study utility maximization for power utility random fields with and without intermediate consumption in a general semimartingale model with closed portfolio constraints. We show that any optimal strategy leads to a solution of the corresponding Bellman equation. The optimal strategies are described pointwise in term... | [
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7769819 | 0912.1845 | 2009-12-09 | Multiplicative Noise Removal Using Variable Splitting and Constrained Optimization | Multiplicative noise (also known as speckle noise) models are central to the study of coherent imaging systems, such as synthetic aperture radar and sonar, and ultrasound and laser imaging. These models introduce two additional layers of difficulties with respect to the standard Gaussian additive noise scenario: (1) th... | [
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10238439 | 0912.1660 | 2009-12-09 | Gradient-based methods for sparse recovery | The convergence rate is analyzed for the SpaSRA algorithm (Sparse Reconstruction by Separable Approximation) for minimizing a sum $f (\m{x}) + \psi (\m{x})$ where $f$ is smooth and $\psi$ is convex, but possibly nonsmooth. It is shown that if $f$ is convex, then the error in the objective function at iteration $k$, for... | [
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8163817 | 0912.1637 | 2009-12-09 | Fast non-negative deconvolution for spike train inference from population calcium imaging | Calcium imaging for observing spiking activity from large populations of neurons are quickly gaining popularity. While the raw data are fluorescence movies, the underlying spike trains are of interest. This work presents a fast non-negative deconvolution filter to infer the approximately most likely spike train for eac... | [
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7929834 | 0912.1610 | 2009-12-09 | The GALEX Arecibo SDSS Survey. I. Gas Fraction Scaling Relations of Massive Galaxies and First Data Release | We introduce the GALEX Arecibo SDSS Survey (GASS), an on-going large program that is gathering high quality HI-line spectra using the Arecibo radio telescope for an unbiased sample of ~1000 galaxies with stellar masses greater than 10^10 Msun and redshifts 0.025<z<0.05, selected from the SDSS spectroscopic and GALEX im... | [
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2080515 | 0912.1776 | 2009-12-09 | On the Optimality of a Class of LP-based Algorithms | In this paper we will be concerned with a class of packing and covering problems which includes Vertex Cover and Independent Set. Typically, one can write an LP relaxation and then round the solution. In this paper, we explain why the simple LP-based rounding algorithm for the \\VC problem is optimal assuming the UGC. ... | [
"cs.CC"
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"author_id": "a kumar_51",
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119180205 | 0912.1791 | 2009-12-09 | The TAOS Project Stellar Variability I. Detection of Low-Amplitude delta Scuti Stars | We analyzed data accumulated during 2005 and 2006 by the Taiwan-American Occultation Survey (TAOS) in order to detect short-period variable stars (periods of <~ 1 hour) such as delta Scuti. TAOS is designed for the detection of stellar occultation by small-size Kuiper Belt Objects (KBOs) and is operating four 50cm tele... | [
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... | null |
28823875 | 0912.1819 | 2009-12-09 | Congruence B-Orbits and the Bruhat Poset of Involutions of the Symmetric Group | We study the poset of Borel congruence classes of symmetric matrices ordered by containment of closures. We give a combinatorial description of this poset and calculate its rank function. We discuss the relation between this poset and the Bruhat poset of involutions of the symmetric group. | [
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17871295 | 0912.1886 | 2009-12-09 | Mod-discrete expansions | In this paper, we consider approximating expansions for the distribution of integer valued random variables, in circumstances in which convergence in law cannot be expected. The setting is one in which the simplest approximation to the $n$'th random variable $X_n$ is by a particular member $R_n$ of a given family of di... | [
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14743244 | 0912.1768 | 2009-12-09 | Frequency of Occurrence and Information Entropy of American Sign Language | American Sign Language (ASL) uses a series of hand based gestures as a replacement for words to allow the deaf to communicate. Previous work has shown that although it takes longer to make signs than to say the equivalent words, on average sentences can be completed in about the same time. This leaves unresolved, howev... | [
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263629453 | 0912.1664 | 2009-12-09 | An exact algorithm for graph partitioning | An exact algorithm is presented for solving edge weighted graph partitioning problems. The algorithm is based on a branch and bound method applied to a continuous quadratic programming formulation of the problem. Lower bounds are obtained by decomposing the objective function into convex and concave parts and replacing... | [
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13928698 | 0912.1909 | 2009-12-09 | MIMO Precoding with X- and Y-Codes | We consider a time division duplex (TDD) $n_t \times n_r$ multiple-input multiple-output (MIMO) system with channel state information (CSI) at both the transmitter and receiver. We propose X- and Y-Codes to achieve high multiplexing and diversity gains at low complexity. The proposed precoding schemes are based upon th... | [
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18315577 | 0912.1885 | 2009-12-09 | Power Utility Maximization in Constrained Exponential L\'evy Models | We study power utility maximization for exponential L\'evy models with portfolio constraints, where utility is obtained from consumption and/or terminal wealth. For convex constraints, an explicit solution in terms of the L\'evy triplet is constructed under minimal assumptions by solving the Bellman equation. We use a ... | [
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9286492 | 0912.1879 | 2009-12-09 | The Opportunity Process for Optimal Consumption and Investment with Power Utility | We study the utility maximization problem for power utility random fields in a semimartingale financial market, with and without intermediate consumption. The notion of an opportunity process is introduced as a reduced form of the value process of the resulting stochastic control problem. We show how the opportunity pr... | [
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119113472 | 0912.2042 | 2009-12-10 | Metallicity of the polar disk in NGC4650A: constraints for cold accretion scenario | We used high resolution spectra in the optical and near-infrared wavelength range to study the abundance ratios and metallicities of the HII regions associated with the polar disk in NGC4650A, in order to put constraints on the formation of the polar disk through cold gas accretion along a filament; this might be the m... | [
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119118891 | 0912.2082 | 2009-12-10 | Transverse momentum dependence of J/psi polarization at midrapidity in p+p collisions at sqrt(s)=200 GeV | We report the measurement of the transverse momentum dependence of inclusive J/psi polarization in p+p collisions at sqrt(s)=200 GeV performed by the PHENIX Experiment at RHIC. The polarization is studied in the helicity, Gottfried-Jackson, and Collins-Soper frames for p_T < 5 GeV/c and |y| < 0.35. The J/psi polarizati... | [
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215776267 | 0912.1897 | 2009-12-10 | Adaptive Scheduling of Data Paths using Uppaal Tiga | We apply Uppaal Tiga to automatically compute adaptive scheduling strategies for an industrial case study dealing with a state-of-the-art image processing pipeline of a printer. As far as we know, this is the first application of timed automata technology to an industrial scheduling problem with uncertainty in job arri... | [
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1594221 | 0912.1987 | 2009-12-10 | Training and Feedback Optimization for Multiuser MIMO Downlink | We consider a MIMO fading broadcast channel where the fading channel coefficients are constant over time-frequency blocks that span a coherent time $\times$ a coherence bandwidth. In closed-loop systems, channel state information at transmitter (CSIT) is acquired by the downlink training sent by the base station and an... | [
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19877453 | 2006.02723 | 2009-12-10 | On the Origin and Evolution of Curvature of the Spectral Energy Distribution of Fermi Bright Blazars | The origin and evolution of spectral curvature in blazar spectral energy distribution (SED) is still unclear. Since the observed SED curvature is related to an intrinsic curvature in emitting electron energy distribution (EED), we study this question by employing a log-parabolic EED with a curvature parameter and peak ... | [
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119249786 | 0912.1892 | 2009-12-10 | Unlimited Energy Gain in the Laser-Driven Radiation Pressure Dominant Acceleration of Ions | The energy of the ions accelerated by an intense electromagnetic wave in the radiation pressure dominated regime can be greatly enhanced due to a transverse expansion of a thin target. The expansion decreases the number of accelerated ions in the irradiated region increasing the energy and the longitudinal velocity of ... | [
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"author_id": "e echkina_0",
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13860951 | 0912.2138 | 2009-12-10 | Effective Carrier Sensing in CSMA Networks under Cumulative Interference | This paper proposes and investigates the concept of a safe carrier-sensing range that can guarantee interference safe (also termed hidden-node-free) transmissions in CSMA networks under the cumulative interference model. Compared with the safe carrier-sensing range under the commonly assumed but less realistic pairwise... | [
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"name": "Soung [\"Chang\"] Liew",
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12416729 | 0912.2378 | 2009-12-11 | Limited Feedback for Temporally Correlated MIMO Channels with Other Cell Interference | Limited feedback improves link reliability with a small amount of feedback from the receiver back to the transmitter. In cellular systems, the performance of limited feedback will be degraded in the presence of other cell interference, when the base stations have limited or no coordination. This paper establishes the d... | [
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118402357 | 0912.2337 | 2009-12-11 | A 83Krm Source for Use in Low-background Liquid Xenon Time Projection Chambers | We report the testing of a charcoal-based Kr-83m source for use in calibrating a low background two-phase liquid xenon detector. Kr-83m atoms produced through the decay of Rb-83 are introduced into a xenon detector by flowing xenon gas past the Rb-83 source. 9.4 keV and 32.1 keV transitions from decaying 83Krm nuclei a... | [
"physics.ins-det"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7126387 | 0912.2199 | 2009-12-11 | The Smallville Effect: Social Ties Make Mobile Networks More Secure Against the Node Capture Attack | Mobile Ad Hoc networks, due to the unattended nature of the network itself and the dispersed location of nodes, are subject to several unique security issues. One of the most vexed security threat is node capture. A few solutions have already been proposed to address this problem; however, those solutions are either ce... | [
"cs.CR",
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"name": "Roberto [\"Di\"] Pietro",
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5156281 | 0912.2385 | 2009-12-11 | Closing the Learning-Planning Loop with Predictive State Representations | A central problem in artificial intelligence is that of planning to maximize future reward under uncertainty in a partially observable environment. In this paper we propose and demonstrate a novel algorithm which accurately learns a model of such an environment directly from sequences of action-observation pairs. We th... | [
"cs.LG",
"cs.AI"
] | null | [
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] | null | null | null |
56038786 | 0912.2274 | 2009-12-11 | Stellar Limb-Darkening Coefficients for CoRot and Kepler | Transiting exoplanets provide unparalleled access to the fundamental parameters of both extrasolar planets and their host stars. We present limb-darkening coefficients (LDCs) for the exoplanet hunting CoRot and Kepler missions. The LDCs are calculated with ATLAS stellar atmospheric model grids and span a wide range of ... | [
"astro-ph.EP",
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] | null | [
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] | null | null | null |
118547082 | 0912.2169 | 2009-12-11 | On the Origin of the Galaxy Star-Formation-Rate Sequence: Evolution and Scatter | We use a semi-analytic model for disk galaxies to explore the origin of the time evolution and small scatter of the galaxy SFR sequence -- the tight correlation between star-formation rate (SFR) and stellar mass (M_star). The steep decline of SFR from z~2 to the present, at fixed M_star, is a consequence of the followi... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118831565 | 0912.2157 | 2009-12-11 | Topological insulators and superconductors: ten-fold way and dimensional hierarchy | It has recently been shown that in every spatial dimension there exist precisely five distinct classes of topological insulators or superconductors. Within a given class, the different topological sectors can be distinguished, depending on the case, by a Z or a Z_2 topological invariant. This is an exhaustive classific... | [
"cond-mat.mes-hall",
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] | null | [
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] | null | null | null |
58928483 | 0912.2276 | 2009-12-11 | Fitting Parton Distribution Data with Multiplicative Normalization Uncertainties | We consider the generic problem of performing a global fit to many independent data sets each with a different overall multiplicative normalization uncertainty. We show that the methods in common use to treat multiplicative uncertainties lead to systematic biases. We develop a method which is unbiased, based on a self-... | [
"hep-ph",
"hep-ex",
"physics.data-an"
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{
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{
"author_id": "r ball_1",
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"name": "Luigi [\"Del\"] Debbio",
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118674302 | 0912.2338 | 2009-12-11 | Extragalactic millimeter-wave sources in South Pole Telescope survey data: source counts, catalog, and statistics for an 87 square-degree field | We report the results of an 87 square-degree point-source survey centered at R.A. 5h30m, decl. -55 deg. taken with the South Pole Telescope (SPT) at 1.4 and 2.0 mm wavelengths with arc-minute resolution and milli-Jansky depth. Based on the ratio of flux in the two bands, we separate the detected sources into two popula... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7261895 | 0912.2404 | 2009-12-11 | Succinct Coverage Oracles | In this paper, we identify a fundamental algorithmic problem that we term succinct dynamic covering (SDC), arising in many modern-day web applications, including ad-serving and online recommendation systems in eBay and Netflix. Roughly speaking, SDC applies two restrictions to the well-studied Max-Coverage problem: Giv... | [
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{
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"name": "Anish [\"Das\"] Sarma",
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31594166 | 0912.2383 | 2009-12-12 | Evidence for a new resonance and search for the Y(4140) in $\gamma \gamma \to \phi J/\psi$ | The process $\gamma \gamma \to \phi \jpsi$ is measured for $\phi \jpsi$ masses between threshold and 5 GeV/${\it c}^2$, using a data sample of 825 fb$^{-1}$ collected with the Belle detector. A narrow peak of $8.8^{+4.2}_{-3.2}$ events, with a significance of 3.2 standard deviations including systematic uncertainty, is... | [
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
281419630 | 0912.2423 | 2009-12-12 | Non asymptotic minimax rates of testing in signal detection with heterogeneous variances | The aim of this paper is to establish non-asymptotic minimax rates of testing for goodness-of-fit hypotheses in a heteroscedastic setting. More precisely, we deal with sequences $(Y_j)_{j\in J}$ of independent Gaussian random variables, having mean $(\theta_j)_{j\in J}$ and variance $(\sigma_j)_{j\in J}$. The set $J$ w... | [
"math.ST",
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{
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"author_id": "j loubes_1",
"name": "Jean-Michel Loubes",
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32571030 | 0912.2462 | 2009-12-12 | Tropical polyhedra are equivalent to mean payoff games | We show that several decision problems originating from max-plus or tropical convexity are equivalent to zero-sum two player game problems. In particular, we set up an equivalence between the external representation of tropical convex sets and zero-sum stochastic games, in which tropical polyhedra correspond to determi... | [
"math.CO",
"math.OC"
] | null | [
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] | null | null | null |
119181870 | 0912.2386 | 2009-12-12 | $XYZ$ particles at Belle | In this paper, I review recent progress in the study of the $XYZ$ particles at Belle. I only focus on studies with charmonium and one or more light mesons in the final states. This covers the X(3872), X(3915), Y(4140), X(4350), and the charged Z states. | [
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1669154 | 0912.2412 | 2009-12-12 | Modeling sparse connectivity between underlying brain sources for EEG/MEG | We propose a novel technique to assess functional brain connectivity in EEG/MEG signals. Our method, called Sparsely-Connected Sources Analysis (SCSA), can overcome the problem of volume conduction by modeling neural data innovatively with the following ingredients: (a) the EEG is assumed to be a linear mixture of corr... | [
"stat.ME",
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"stat.ML"
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{
"author_id": "s haufe_1",
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"author_id": "r tomioka_1",
"name": "Ryota Tomioka",
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... | null |
10450012 | 0912.2495 | 2009-12-13 | Xampling: Analog to Digital at Sub-Nyquist Rates | We present a sub-Nyquist analog-to-digital converter of wideband inputs. Our circuit realizes the recently proposed modulated wideband converter, which is a flexible platform for sampling signals according to their actual bandwidth occupation. The theoretical work enables, for example, a sub-Nyquist wideband receiver, ... | [
"nlin.CG",
"nlin.AO",
"physics.ins-det"
] | null | [
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] | null | null | null |
26726055 | 0912.2493 | 2009-12-13 | Universality in the bulk of the spectrum for complex sample covariance matrices | We consider complex sample covariance matrices $M_N=\frac{1}{N}YY^*$ where $Y$ is a $N \times p$ random matrix with i.i.d. entries $Y_{ij}, 1\leq i\leq N, 1\leq j \leq p$ with distribution $F$. Under some regularity and decay assumption on $F$, we prove universality of some local eigenvalue statistics in the bulk of th... | [
"math.PR"
] | null | [
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] | null | null | null |
7144545 | 0912.2492 | 2009-12-13 | Learning an Interactive Segmentation System | Many successful applications of computer vision to image or video manipulation are interactive by nature. However, parameters of such systems are often trained neglecting the user. Traditionally, interactive systems have been treated in the same manner as their fully automatic counterparts. Their performance is evaluat... | [
"stat.ML",
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"name": "Pushmeet Kohli",
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51835701 | 0912.2745 | 2009-12-14 | Carbon nanotubes for coherent spintronic devices | Carbon nanotubes bridge the molecular and crystalline quantum worlds, and their extraordinary electronic, mechanical and optical properties have attracted enormous attention from a broad scientific community. We review the basic principles of fabricating spin-electronic devices based on individual, electrically-gated c... | [
"cond-mat.mes-hall"
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{
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"name": "H. [\"O.\",\"H.\"] Churchill",
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... | null |
8690621 | 0912.2739 | 2009-12-14 | Snakes and ladders: localized solutions of plane Couette flow | We demonstrate the existence of a large number of exact solutions of plane Couette flow, which share the topology of known periodic solutions but are localized in space. Solutions of different size are organized in a snakes-and-ladders structure strikingly similar to that observed for simpler pattern-forming PDE system... | [
"physics.flu-dyn",
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] | null | [
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] | null | null | null |
15970348 | 0912.2709 | 2009-12-14 | The Gaussian Surface Area and Noise Sensitivity of Degree-$d$ Polynomials | We provide asymptotically sharp bounds for the Gaussian surface area and the Gaussian noise sensitivity of polynomial threshold functions. In particular we show that if $f$ is a degree-$d$ polynomial threshold function, then its Gaussian sensitivity at noise rate $\epsilon$ is less than some quantity asymptotic to $\fr... | [
"cs.CC",
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] | null | [
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{
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] | null |
1318388 | 0912.2601 | 2009-12-14 | The first Italian research assessment exercise: a bibliometric perspective | In December 2003, seventeen years after the first UK research assessment exercise, Italy started up its first-ever national research evaluation, with the aim to evaluate, using the peer review method, the excellence of the national research production. The evaluation involved 20 disciplinary areas, 102 research structu... | [
"cs.CY",
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] | null | [
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] | null | null | null |
54824053 | 0912.2616 | 2009-12-14 | Metal production in M33: space and time variations | Nearby galaxies are ideal places to study in detail metallicity gradients and their time evolution. We consider chemical abundances of a new sample of \hii\ regions complemented with previous literature data-sets. We compare \hii\ region and PN abundances obtained with a common set of observations taken at MMT. With an... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16260993 | 0912.2695 | 2009-12-14 | Nonparametric Independence Screening in Sparse Ultra-High Dimensional Additive Models | A variable screening procedure via correlation learning was proposed Fan and Lv (2008) to reduce dimensionality in sparse ultra-high dimensional models. Even when the true model is linear, the marginal regression can be highly nonlinear. To address this issue, we further extend the correlation learning to marginal nonp... | [
"stat.ME",
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"stat.ML",
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] | null | [
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] | null | null | null |
3259716 | 0912.2815 | 2009-12-14 | Relaxed spanners for directed disk graphs | Let $(V,\delta)$ be a finite metric space, where $V$ is a set of $n$ points and $\delta$ is a distance function defined for these points. Assume that $(V,\delta)$ has a constant doubling dimension $d$ and assume that each point $p\in V$ has a disk of radius $r(p)$ around it. The disk graph that corresponds to $V$ and $... | [
"cs.DS",
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{
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"name": "Liam Roditty",
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119306851 | 0912.2592 | 2009-12-14 | Signatures of impulsive localized heating in the temperature distribution of multi-stranded coronal loops | We study the signatures of different coronal heating regimes on the differential emission measure (DEM) of multi-stranded coronal loops by means of hydrodynamic simulations. We consider heating either uniformly distributed along the loops or localized close to the chromospheric footpoints, in both steady and impulsive ... | [
"astro-ph.SR"
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"name": "Alessandro [\"C.\"] Lanzafame",
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118578169 | 0912.2604 | 2009-12-14 | Theory and experiment of isotropic electromagnetic beam bender made of dielectric materials | In this paper, we utilize the deformation transformation optics (DTO) method to design electromagnetic beam bender, which can change the direction of electromagnetic wave propagation as desire. According to DTO, the transformed material parameters can be expressed by deformation tensor of the spatial transformation. Fo... | [
"physics.optics"
] | null | [
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{
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"name": "Jin Hu",
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15374366 | 0912.2365 | 2009-12-14 | Intra-molecular refrigeration in enzymes | We present a simple mechanism for intra-molecular refrigeration, where parts of a molecule are actively cooled below the environmental temperature. We discuss the potential role and applications of such a mechanism in biology, in particular in enzymatic reactions. | [
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8223581 | 0912.2577 | 2009-12-14 | Global Alignment of Molecular Sequences via Ancestral State Reconstruction | Molecular phylogenetic techniques do not generally account for such common evolutionary events as site insertions and deletions (known as indels). Instead tree building algorithms and ancestral state inference procedures typically rely on substitution-only models of sequence evolution. In practice these methods are ext... | [
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"author_id": "c daskalakis_1",
"name": "Constantinos Daskalakis",
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5343223 | 0912.2468 | 2009-12-14 | Near-equilibrium measurements of nonequilibrium free energy | A central endeavor of thermodynamics is the measurement of free energy changes. Regrettably, although we can measure the free energy of a system in thermodynamic equilibrium, typically all we can say about the free energy of a non-equilibrium ensemble is that it is larger than that of the same system at equilibrium. He... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
44187011 | 0912.2352 | 2009-12-14 | New Horizons for Black Holes and Branes | We initiate a systematic scan of the landscape of black holes in any spacetime dimension using the recently proposed blackfold effective worldvolume theory. We focus primarily on asymptotically flat stationary vacuum solutions, where we uncover large classes of new black holes. These include helical black strings and b... | [
"hep-th",
"gr-qc"
] | null | [
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{
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"author_id": "t harmark_1",
"name": "Troels Harmark",
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17517676 | 0912.2609 | 2009-12-14 | Convergence of the stochastic Euler scheme for locally Lipschitz coefficients | Stochastic differential equations are often simulated with the Monte Carlo Euler method. Convergence of this method is well understood in the case of globally Lipschitz continuous coefficients of the stochastic differential equation. The important case of superlinearly growing coefficients, however, has remained an ope... | [
"math.NA",
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] | null | [
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{
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{
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"author_id": "a jentzen_1",
"name": "Arnulf Jentzen",
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205219186 | 0912.2996 | 2009-12-15 | A single sub-km Kuiper Belt object from a stellar Occultation in archival data | The Kuiper belt is a remnant of the primordial Solar System. Measurements of its size distribution constrain its accretion and collisional history, and the importance of material strength of Kuiper belt objects (KBOs). Small, sub-km sized, KBOs elude direct detection, but the signature of their occultations of backgrou... | [
"astro-ph.EP",
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
115164568 | 0912.2795 | 2009-12-15 | An improvement of the Berry--Esseen inequality with applications to Poisson and mixed Poisson random sums | By a modification of the method that was applied in (Korolev and Shevtsova, 2009), here the inequalities $$\rho(F_n,\Phi)\le\frac{0.335789(\beta^3+0.425)}{\sqrt{n}}$$ and $$\rho(F_n,\Phi)\le \frac{0.3051(\beta^3+1)}{\sqrt{n}} $$ are proved for the uniform distance $\rho(F_n,\Phi)$ between the standard normal distributi... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
4495202 | 0912.2873 | 2009-12-15 | Variational Bayesian Inference and Complexity Control for Stochastic Block Models | It is now widely accepted that knowledge can be acquired from networks by clustering their vertices according to connection profiles. Many methods have been proposed and in this paper we concentrate on the Stochastic Block Model (SBM). The clustering of vertices and the estimation of SBM model parameters have been subj... | [
"stat.AP",
"stat.ME"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
88511945 | 0912.2800 | 2009-12-15 | Condition Number Analysis of Kernel-based Density Ratio Estimation | The ratio of two probability densities can be used for solving various machine learning tasks such as covariate shift adaptation (importance sampling), outlier detection (likelihood-ratio test), and feature selection (mutual information). Recently, several methods of directly estimating the density ratio have been deve... | [
"stat.ML",
"math.ST",
"stat.TH"
] | null | [
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{
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{
"author_id": "t kanamori_1",
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{
"author_id": "t suzuki_10",
"name": "Taiji Suzuki",
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"num_papers": nul... | null |
14842694 | 0912.2986 | 2009-12-15 | On the convex hull of a space curve | The boundary of the convex hull of a compact algebraic curve in real 3-space defines a real algebraic surface. For general curves, that boundary surface is reducible, consisting of tritangent planes and a scroll of stationary bisecants. We express the degree of this surface in terms of the degree, genus and singulariti... | [
"math.AG",
"cs.CG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
413660 | 0912.2882 | 2009-12-15 | Hamiltonian interpolation of splitting approximations for nonlinear PDEs | We consider a wide class of semi linear Hamiltonian partial differential equa- tions and their approximation by time splitting methods. We assume that the nonlinearity is polynomial, and that the numerical tra jectory remains at least uni- formly integrable with respect to an eigenbasis of the linear operator (typicall... | [
"math.NA",
"math.DS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119229513 | 0912.2755 | 2009-12-15 | Black hole lasers, a mode analysis | We show that the black hole laser effect discovered by Corley & Jacobson should be described in terms of frequency eigenmodes that are spatially bound. The spectrum contains a discrete and finite set of complex frequency modes which appear in pairs and which encode the laser effect. In addition, it contains real freque... | [
"hep-th",
"cond-mat.quant-gas",
"gr-qc"
] | null | [
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{
"author_id": "a coutant_1",
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{
"author_id": "r parentani_1",
"name": "Renaud Parentani",
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"h_index": null,
"num_papers": ... | null |
55373717 | 0912.2999 | 2009-12-15 | Evidence for Supernova-Synthesised Dust from the Rising Afterglow of GRB 071025 at z~5 | We present observations and analysis of the broadband afterglow of Swift GRB 071025. Using optical and infrared (RIYJHK) photometry, we derive a photometric redshift of 4.4 < z < 5.2; at this redshift our simultaneous multicolour observations begin at ~30 s after the GRB trigger in the host frame and during the initial... | [
"astro-ph.HE",
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3244475 | 0912.2820 | 2009-12-15 | Network Coding for Computing: Cut-Set Bounds | The following \textit{network computing} problem is considered. Source nodes in a directed acyclic network generate independent messages and a single receiver node computes a target function $f$ of the messages. The objective is to maximize the average number of times $f$ can be computed per network usage, i.e., the ``... | [
"cs.IT",
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] | null | [
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{
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"name": "Massimo Franceschetti",
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... | null |
8664797 | 0912.3221 | 2009-12-16 | Comparison of Langevin and Markov channel noise models for neuronal signal generation | The stochastic opening and closing of voltage-gated ion channels produces noise in neurons. The effect of this noise on the neuronal performance has been modelled using either approximate or Langevin model, based on stochastic differential equations or an exact model, based on a Markov process model of channel gating. ... | [
"q-bio.NC"
] | null | [
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] | null | null | null |
88511781 | 0912.3268 | 2009-12-16 | Variational Inducing Kernels for Sparse Convolved Multiple Output Gaussian Processes | Interest in multioutput kernel methods is increasing, whether under the guise of multitask learning, multisensor networks or structured output data. From the Gaussian process perspective a multioutput Mercer kernel is a covariance function over correlated output functions. One way of constructing such kernels is based ... | [
"stat.ML"
] | null | [
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{
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119288920 | 0912.3152 | 2009-12-16 | Strong electron correlations in the normal state of FeSe0.42Te0.58 | We investigate the normal state of the '11' iron-based superconductor FeSe0.42Te0.58 by angle resolved photoemission. Our data reveal a highly renormalized quasiparticle dispersion characteristic of a strongly correlated metal. We find sheet dependent effective carrier masses between ~ 3 - 16 m_e corresponding to a mas... | [
"cond-mat.str-el"
] | null | [
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{
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"name": "Alexey [\"Y.\"] Ganin",
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... | null |
14045834 | 0912.3089 | 2009-12-16 | Investment and Pricing with Spectrum Uncertainty: A Cognitive Operator's Perspective | This paper studies the optimal investment and pricing decisions of a cognitive mobile virtual network operator (C-MVNO) under spectrum supply uncertainty. Compared with a traditional MVNO who often leases spectrum via long-term contracts, a C-MVNO can acquire spectrum dynamically in short-term by both sensing the empty... | [
"cs.NI"
] | null | [
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] | null | null | null |
1647492 | 0912.2990 | 2009-12-16 | The momentum map representation of images | This paper discusses the mathematical framework for designing methods of large deformation matching (LDM) for image registration in computational anatomy. After reviewing the geometrical framework of LDM image registration methods, a theorem is proved showing that these methods may be designed by using the actions of d... | [
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"name": "François Gay‐Balmaz",
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91230 | 0912.3064 | 2009-12-16 | Multimodal encoding in a simplified model of intracellular calcium signaling | Many cells use calcium signalling to carry information from the extracellular side of the plasma membrane to targets in their interior. Since virtually all cells employ a network of biochemical reactions for Ca2+ signalling, much effort has been devoted to understand the functional role of Ca2+ responses and to deciphe... | [
"q-bio.NC",
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] | null | [
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] | null | null | null |
53492847 | 0912.3074 | 2009-12-16 | Exact Results in ABJM Theory from Topological Strings | Recently, Kapustin, Willett and Yaakov have found, by using localization techniques, that vacuum expectation values of Wilson loops in ABJM theory can be calculated with a matrix model. We show that this matrix model is closely related to Chern-Simons theory on a lens space with a gauge supergroup. This theory has a to... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119119097 | 0912.3257 | 2009-12-16 | How Do Massive Black Holes Get Their Gas? | We use multi-scale SPH simulations to follow the inflow of gas from galactic scales to <0.1pc, where the gas begins to resemble a traditional Keplerian accretion disk. The key ingredients are gas, stars, black holes (BHs), self-gravity, star formation, and stellar feedback. We use ~100 simulations to survey a large par... | [
"astro-ph.CO",
"astro-ph.GA",
"astro-ph.HE"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15660910 | 0912.3288 | 2009-12-16 | A Framework for Quantifying the Degeneracies of Exoplanet Interior Compositions | Several transiting super-Earths are expected to be discovered in the coming few years. While tools to model the interior structure of transiting planets exist, inferences about the composition are fraught with ambiguities. We present a framework to quantify how much we can robustly infer about super-Earth and Neptune-s... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
4360404 | 0912.3229 | 2009-12-16 | A super-Earth transiting a nearby low-mass star | A decade ago, the detection of the first transiting extrasolar planet provided a direct constraint on its composition and opened the door to spectroscopic investigations of extrasolar planetary atmospheres. As such characterization studies are feasible only for transiting systems that are both nearby and for which the ... | [
"astro-ph.EP",
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119113774 | 0912.3137 | 2009-12-16 | Neutrino Fluxes from CMSSM LSP Annihilations in the Sun | We evaluate the neutrino fluxes to be expected from neutralino LSP annihilations inside the Sun, within the minimal supersymmetric extension of the Standard Model with supersymmetry-breaking scalar and gaugino masses constrained to be universal at the GUT scale (the CMSSM). We find that there are large regions of typic... | [
"hep-ph",
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15288792 | 0912.3243 | 2009-12-16 | Three Possible Origins for the Gas Layer on GJ 1214b | We present an analysis of the bulk composition of the MEarth transiting super Earth exoplanet GJ 1214b using planet interior structure models. We consider three possible origins for the gas layer on GJ 1214b: direct accretion of gas from the protoplanetary nebula, sublimation of ices, and outgassing from rocky material... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18302051 | 0912.3309 | 2009-12-16 | New Generalization Bounds for Learning Kernels | This paper presents several novel generalization bounds for the problem of learning kernels based on the analysis of the Rademacher complexity of the corresponding hypothesis sets. Our bound for learning kernels with a convex combination of p base kernels has only a log(p) dependency on the number of kernels, p, which ... | [
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
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{
"author_id": "m mohri_1",
"name": "Mehryar Mohri",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
119111672 | 0912.3416 | 2009-12-17 | Thermal conductivity of the Toda lattice with conservative noise | We study the thermal conductivity of the one dimensional Toda lattice perturbed by a stochastic dynamics preserving energy and momentum. The strength of the stochastic noise is controlled by a parameter $\gamma$. We show that heat transport is anomalous, and that the thermal conductivity diverges with the length $n$ of... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
392161 | 0912.3301 | 2009-12-17 | Composite Binary Losses | We study losses for binary classification and class probability estimation and extend the understanding of them from margin losses to general composite losses which are the composition of a proper loss with a link function. We characterise when margin losses can be proper composite losses, explicitly show how to determ... | [
"stat.ML"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
1072704 | 0912.3481 | 2009-12-17 | An Augmented Lagrangian Approach to the Constrained Optimization Formulation of Imaging Inverse Problems | We propose a new fast algorithm for solving one of the standard approaches to ill-posed linear inverse problems (IPLIP), where a (possibly non-smooth) regularizer is minimized under the constraint that the solution explains the observations sufficiently well. Although the regularizer and constraint are usually convex, ... | [
"math.OC",
"math.NA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
946870 | 0912.3513 | 2009-12-17 | Stimulus-Dependent Suppression of Chaos in Recurrent Neural Networks | Neuronal activity arises from an interaction between ongoing firing generated spontaneously by neural circuits and responses driven by external stimuli. Using mean-field analysis, we ask how a neural network that intrinsically generates chaotic patterns of activity can remain sensitive to extrinsic input. We find that ... | [
"q-bio.NC",
"cond-mat.dis-nn",
"nlin.CD",
"physics.bio-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
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{
"author_id": "k rajan_1",
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{
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"name": "L. [\"F.\"] Abbott",
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... | null |
115166742 | 0912.3425 | 2009-12-17 | U-statistics and random subgraph counts: Multivariate normal approximation via exchangeable pairs and embedding | In a recent paper by the authors, a new approach--called the "embedding method"--was introduced, which allows to make use of exchangeable pairs for normal and multivariate normal approximation with Stein's method in cases where the corresponding couplings do not satisfy a certain linearity condition. The key idea is to... | [
"math.PR"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "49584",
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}
] | [
{
"author_id": "g reinert_1",
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{
"author_id": "a röllin_0",
"name": "Adrian Röllin",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
115156541 | 0912.3488 | 2009-12-17 | Surface Comparison with Mass Transportation | We use mass-transportation as a tool to compare surfaces (2-manifolds). In particular, we determine the "similarity" of two given surfaces by solving a mass-transportation problem between their conformal densities. This mass transportation problem differs from the standard case in that we require the solution to be inv... | [
"math.NA",
"math.DG"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "y lipman_1",
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{
"author_id": "i daubechies_1",
"name": "Ingrid Daubechies",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
7128002 | 0912.3599 | 2009-12-18 | Robust Principal Component Analysis? | This paper is about a curious phenomenon. Suppose we have a data matrix, which is the superposition of a low-rank component and a sparse component. Can we recover each component individually? We prove that under some suitable assumptions, it is possible to recover both the low-rank and the sparse components exactly by ... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history",
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{
"corpus_id": "19029700",
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{
"author_id": "e candès_1",
"name": "Emmanuel [\"J.\"] Candès",
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},
{
"author_id": "x li_171",
"name": "Xiaodong Li",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
7775020 | 0912.3856 | 2009-12-18 | Designing ISP-friendly Peer-to-Peer Networks Using Game-based Control | The rapid growth of peer-to-peer (P2P) networks in the past few years has brought with it increases in transit cost to Internet Service Providers (ISPs), as peers exchange large amounts of traffic across ISP boundaries. This ISP oblivious behavior has resulted in misalignment of incentives between P2P networks--that se... | [
"cs.NI",
"cs.GT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v reddy_2",
"name": "Vinith Reddy",
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},
{
"author_id": "y kim_24",
"name": "Younghoon Kim",
"publication_history": null,
"h_index": null,
"num_papers": null,
"nu... | null |
25358975 | 0912.3832 | 2009-12-18 | Interactions between Intrinsic and Stimulus-Evoked Activity in Recurrent Neural Networks | Trial-to-trial variability is an essential feature of neural responses, but its source is a subject of active debate. Response variability (Mast and Victor, 1991; Arieli et al., 1995 & 1996; Anderson et al., 2000 & 2001; Kenet et al., 2003; Petersen et al., 2003a & b; Fiser, Chiu and Weliky, 2004; MacLean et al., 2005;... | [
"q-bio.NC",
"cond-mat.dis-nn",
"nlin.CD",
"physics.bio-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "l abbott_1",
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},
{
"author_id": "k rajan_1",
"name": "Kanaka Rajan",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
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