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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16463379 | 0903.3997 | 2009-03-24 | A unified model for Sierpinski networks with scale-free scaling and small-world effect | In this paper, we propose an evolving Sierpinski gasket, based on which we establish a model of evolutionary Sierpinski networks (ESNs) that unifies deterministic Sierpinski network [Eur. Phys. J. B {\bf 60}, 259 (2007)] and random Sierpinski network [Eur. Phys. J. B {\bf 65}, 141 (2008)] to the same framework. We sugg... | [
"cond-mat.dis-nn",
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{
"author_id": "j guan_17",
"name": "Jihong Guan",
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{
"author_id": "y wu_340",
"name": "Yuewen Wu",
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118495566 | 0903.4264 | 2009-03-25 | Supercooled Liquids for Pedestrians | When we lower the temperature of a liquid, at some point we meet a first order phase transition to the crystal. Yet, under certain conditions it is possible to keep the system in its metastable phase and to avoid crystallization. In this way the liquid enters in the supercooled phase. Supercooled liquids have a very ri... | [
"cond-mat.stat-mech",
"cond-mat.dis-nn"
] | null | [
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11565955 | 0903.4510 | 2009-03-25 | Differentially Private Combinatorial Optimization | Consider the following problem: given a metric space, some of whose points are "clients", open a set of at most $k$ facilities to minimize the average distance from the clients to these facilities. This is just the well-studied $k$-median problem, for which many approximation algorithms and hardness results are known. ... | [
"cs.DS",
"cs.CR",
"cs.GT"
] | null | [
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] | null | null | null |
56388788 | 0903.4379 | 2009-03-25 | Equation of state and QCD transition at finite temperature | We calculate the equation of state in 2+1 flavor QCD at finite temperature with physical strange quark mass and almost physical light quark masses using lattices with temporal extent Nt=8. Calculations have been performed with two different improved staggered fermion actions, the asqtad and p4 actions. Overall, we find... | [
"hep-lat",
"hep-ph",
"nucl-th"
] | null | [
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] | null | null | null |
14598511 | 0903.4400 | 2009-03-25 | Central Limit Behavior in the Kuramoto model at the 'Edge of Chaos' | We study the relationship between chaotic behavior and the Central Limit Theorem (CLT) in the Kuramoto model. We calculate sums of angles at equidistant times along deterministic trajectories of single oscillators and we show that, when chaos is sufficiently strong, the Pdfs of the sums tend to a Gaussian, consistently... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14078245 | 0903.4368 | 2009-03-25 | Convergent relaxations of polynomial optimization problems with non-commuting variables | We consider optimization problems with polynomial inequality constraints in non-commuting variables. These non-commuting variables are viewed as bounded operators on a Hilbert space whose dimension is not fixed and the associated polynomial inequalities as semidefinite positivity constraints. Such problems arise natura... | [
"math.OC",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
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2755159 | 0903.4426 | 2009-03-25 | Capacity Scaling Laws for Underwater Networks | The underwater acoustic channel is characterized by a path loss that depends not only on the transmission distance, but also on the signal frequency. Signals transmitted from one user to another over a distance $l$ are subject to a power loss of $l^{-\alpha}{a(f)}^{-l}$. Although a terrestrial radio channel can be mode... | [
"cs.IT",
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] | null | [
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18493210 | 0903.4317 | 2009-03-25 | G64.5+0.9, a new shell supernova remnant with unusual central emission | We present observations between 1.4 and 18 GHz confirming that G64.5+0.9 is new Galactic shell supernova remnant, using the Very Large Array and the Arcminute Microkelvin Imager. The remnant is a shell ~8 arcmin in diameter with a spectral index of alpha = 0.47 +/- 0.03 (with alpha defined such that flux density S vari... | [
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"author_id": "m davies_8",
"name": "Matthew [\"L.\"] Davies",
"publication_history": null... | null |
992790 | 0903.4172 | 2009-03-25 | The complete superconformal index for N=6 Chern-Simons theory | We calculate the superconformal index for N=6 Chern-Simons-matter theory with gauge group U(N) X U(N) at arbitrary allowed value of the Chern-Simons level k. The calculation is based on localization of the path integral for the index. Our index counts supersymmetric gauge invariant operators containing inclusions of ma... | [
"hep-th"
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16833843 | 0903.4321 | 2009-03-25 | Eigenvalue Density, Li's Positivity, and the Critical Strip | We rewrite the zero-counting formula within the critical strip of the Riemann zeta function as a cumulative density distribution; this subsequently allows us to formally derive an integral expression for the Li coefficients associated with the Riemann xi-function which, in particular, indicate that their positivity cri... | [
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8954965 | 0903.4620 | 2009-03-26 | Adaptive pointwise estimation in time-inhomogeneous conditional heteroscedasticity models | This paper offers a new method for estimation and forecasting of the volatility of financial time series when the stationarity assumption is violated. Our general local parametric approach particularly applies to general varying-coefficient parametric models, such as GARCH, whose coefficients may arbitrarily vary with ... | [
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"name": "Wolfgang [\"Karl\"] Härdle",
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17590159 | 0903.4700 | 2009-03-26 | Planet-planet scattering leads to tightly packed planetary systems | The known extrasolar multiple-planet systems share a surprising dynamical attribute: they cluster just beyond the Hill stability boundary. Here we show that the planet-planet scattering model, which naturally explains the observed exoplanet eccentricity distribution, can reproduce the observed distribution of dynamical... | [
"astro-ph.EP"
] | null | [
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2139852 | 0903.4527 | 2009-03-26 | Graph polynomials and approximation of partition functions with Loopy Belief Propagation | The Bethe approximation, or loopy belief propagation algorithm is a successful method for approximating partition functions of probabilistic models associated with a graph. Chertkov and Chernyak derived an interesting formula called Loop Series Expansion, which is an expansion of the partition function. The main term o... | [
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"author_id": "k fukumizu_1",
"name": "Kenji Fukumizu",
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118424422 | 0903.4684 | 2009-03-26 | The mass-metallicity relation in galaxy clusters: the relative importance of cluster membership versus local environment | Using a large (14,857), homogenously selected sample of cluster galaxies identified in the Sloan Digital Sky Survey Data Release 4 (SDSS DR4), we investigate the impact of cluster membership and local density on the stellar mass-gas phase metallicity relation (MZR). We show that stellar metallicities are not suitable f... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8240622 | 0903.4579 | 2009-03-26 | Coherence-Based Performance Guarantees for Estimating a Sparse Vector Under Random Noise | We consider the problem of estimating a deterministic sparse vector x from underdetermined measurements Ax+w, where w represents white Gaussian noise and A is a given deterministic dictionary. We analyze the performance of three sparse estimation algorithms: basis pursuit denoising (BPDN), orthogonal matching pursuit (... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119216351 | 0903.4853 | 2009-03-27 | Determination of the D0 -> K-pi+pi0 and D0 -> K-pi+pi+pi- Coherence Factors and Average Strong-Phase Differences Using Quantum-Correlated Measurements | The first measurements of the coherence factors (R_Kpipi0 and R_K3pi) and the average strong-phase differences (delta_D^Kpipi0 and delta_D^K3pi) for D0->K-pi+pi0 and D0->K-pi+pi+pi- are presented. These parameters can be used to improve the determination of the unitarity triangle angle gamma in B^- -> DK^- decays, wher... | [
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12120470 | 0903.4800 | 2009-03-27 | Search for the standard model Higgs boson in tau final states | We present a search for the standard model Higgs boson using hadronically decaying tau leptons, in 1 inverse femtobarn of data collected with the D0 detector at the Fermilab Tevatron ppbar collider. We select two final states: tau plus missing transverse energy and b jets, and tau+ tau- plus jets. These final states ar... | [
"hep-ex"
] | null | [
"target.author.publication_history"
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{
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"author_id": "b abbott_2",
"name": "B. Abbott",
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15663876 | 0903.4740 | 2009-03-27 | Central limit theorems for eigenvalues of deformations of Wigner matrices | In this paper, we explain the dependance of the fluctuations of the largest eigenvalues of a Deformed Wigner model with respect to the eigenvectors of the perturbation matrix. We exhibit quite general situations that will give rise to universality or non universality of the fluctuations. | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10622221 | 0903.4741 | 2009-03-27 | Constant entropy sampling and release waves of shock compressions | We present several equilibrium methods that allow to compute isentropic processes, either during the compression or the release of the material. These methods are applied to compute the isentropic release of a shocked monoatomic liquid at high pressure and temperature. Moreover, equilibrium results of isentropic releas... | [
"cond-mat.stat-mech"
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"author_id": "e bourasseau_1",
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12655004 | 0903.4693 | 2009-03-27 | Rejuvenating the matter power spectrum: restoring information with a logarithmic density mapping | We find that nonlinearities in the dark-matter power spectrum are dramatically smaller if the density field first undergoes a logarithmic mapping. In the Millennium simulation, this procedure produces a power spectrum with a shape hardly departing from the linear power spectrum for k <~ 1 h/Mpc at all redshifts. Also, ... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7863618 | 0903.4742 | 2009-03-27 | Guaranteed Minimum Rank Approximation from Linear Observations by Nuclear Norm Minimization with an Ellipsoidal Constraint | The rank minimization problem is to find the lowest-rank matrix in a given set. Nuclear norm minimization has been proposed as an convex relaxation of rank minimization. Recht, Fazel, and Parrilo have shown that nuclear norm minimization subject to an affine constraint is equivalent to rank minimization under a certain... | [
"cs.IT",
"math.IT"
] | null | [
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] | null | null | null |
13962252 | 0903.4817 | 2009-03-27 | An Exponential Lower Bound on the Complexity of Regularization Paths | For a variety of regularized optimization problems in machine learning, algorithms computing the entire solution path have been developed recently. Most of these methods are quadratic programs that are parameterized by a single parameter, as for example the Support Vector Machine (SVM). Solution path algorithms do not ... | [
"cs.LG",
"cs.CG",
"cs.CV",
"math.OC",
"stat.ML"
] | null | [
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14237207 | 0903.4961 | 2009-03-29 | Global Clock, Physical Time Order and Pending Period Analysis in Multiprocessor Systems | In multiprocessor systems, various problems are treated with Lamport's logical clock and the resultant logical time orders between operations. However, one often needs to face the high complexities caused by the lack of logical time order information in practice. In this paper, we utilize the \emph{global clock} to inf... | [
"cs.DC"
] | null | [
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] | [] | [
{
"author_id": "y chen_462",
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{
"author_id": "t chen_82",
"name": "Tianshi Chen",
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119242845 | 0903.5077 | 2009-03-29 | Minimum Mass Solar Nebulae and Planetary Migration | The Minimum Mass Solar Nebula (MMSN) is a protoplanetary disk that contains the minimum amount of solids necessary to build the planets of the Solar System. Assuming that the giant planets formed in the compact configuration they have at the beginning of the "Nice model", Desch (2007) built a new MMSN. He finds a decre... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1950714 | 0903.5072 | 2009-03-29 | Asymptotology of Chemical Reaction Networks | The concept of the limiting step is extended to the asymptotology of multiscale reaction networks. Complete theory for linear networks with well separated reaction rate constants is developed. We present algorithms for explicit approximations of eigenvalues and eigenvectors of kinetic matrix. Accuracy of estimates is p... | [
"physics.chem-ph",
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] | null | [
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{
"author_id": "a gorban_1",
"name": "Alexander [\"N\"] Gorban",
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"author_id": "o radulescu_1",
"name": "Ovidiu Radulescu",
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5566603 | 0903.5074 | 2009-03-29 | Analyzing Least Squares and Kalman Filtered Compressed Sensing | In recent work, we studied the problem of causally reconstructing time sequences of spatially sparse signals, with unknown and slow time-varying sparsity patterns, from a limited number of linear "incoherent" measurements. We proposed a solution called Kalman Filtered Compressed Sensing (KF-CS). The key idea is to run ... | [
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] | null |
745459 | 0903.5048 | 2009-03-29 | Exploration of Possible Quantum Gravity Effects with Neutrinos II: Lorentz Violation in Neutrino Propagation | It has been suggested that the interactions of energetic particles with the foamy structure of space-time thought to be generated by quantum-gravitational (QG) effects might violate Lorentz invariance, so that they do not propagate at a universal speed of light. We consider the limits that may be set on a linear or qua... | [
"hep-ph"
] | null | [
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{
"author_id": "a sakharov_1",
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{
"author_id": "j ellis_3",
"name": "John Ellis",
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119205282 | 0903.5082 | 2009-03-29 | Quantum Darwinism | Quantum Darwinism describes the proliferation, in the environment, of multiple records of selected states of a quantum system. It explains how the fragility of a state of a single quantum system can lead to the classical robustness of states of their correlated multitude; shows how effective `wave-packet collapse' aris... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2595462 | 0903.5108 | 2009-03-29 | Multi-mode Transmission for the MIMO Broadcast Channel with Imperfect Channel State Information | This paper proposes an adaptive multi-mode transmission strategy to improve the spectral efficiency achieved in the multiple-input multiple-output (MIMO) broadcast channel with delayed and quantized channel state information. The adaptive strategy adjusts the number of active users, denoted as the transmission mode, to... | [
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16321244 | 0903.5160 | 2009-03-30 | Initial boundary value problems for Einstein's field equations and geometric uniqueness | While there exist now formulations of initial boundary value problems for Einstein's field equations which are well posed and preserve constraints and gauge conditions, the question of geometric uniqueness remains unresolved. For two different approaches we discuss how this difficulty arises under general assumptions. ... | [
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119245820 | 0903.5256 | 2009-03-30 | On the logical operators of quantum codes | I show how applying a symplectic Gram-Schmidt orthogonalization to the normalizer of a quantum code gives a different way of determining the code's logical operators. This approach may be more natural in the setting where we produce a quantum code from classical codes because the generator matrices of the classical cod... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6626123 | 0903.5282 | 2009-03-30 | Multi-agent Q-Learning of Channel Selection in Multi-user Cognitive Radio Systems: A Two by Two Case | Resource allocation is an important issue in cognitive radio systems. It can be done by carrying out negotiation among secondary users. However, significant overhead may be incurred by the negotiation since the negotiation needs to be done frequently due to the rapid change of primary users' activity. In this paper, a ... | [
"cs.IT",
"math.IT"
] | null | [
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17314161 | 0903.5315 | 2009-03-30 | Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations? | We analyze a sample of optical light curves for 100 quasars, 70 of which have black hole mass estimates. Our sample is the largest and broadest used yet for modeling quasar variability. The sources in our sample have z < 2.8 and 10^6 < M_BH < 10^10. We model the light curves as a continuous time stochastic process, pro... | [
"astro-ph.CO",
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] | null | [
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] | null | null | null |
1877042 | 0903.5328 | 2009-03-30 | A Stochastic View of Optimal Regret through Minimax Duality | We study the regret of optimal strategies for online convex optimization games. Using von Neumann's minimax theorem, we show that the optimal regret in this adversarial setting is closely related to the behavior of the empirical minimization algorithm in a stochastic process setting: it is equal to the maximum, over jo... | [
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] | null | [
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"author_id": "a agarwal_20",
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5977608 | 0903.5066 | 2009-03-30 | Modified-CS: Modifying Compressive Sensing for Problems with Partially Known Support | We study the problem of reconstructing a sparse signal from a limited number of its linear projections when a part of its support is known, although the known part may contain some errors. The ``known" part of the support, denoted T, may be available from prior knowledge. Alternatively, in a problem of recursively reco... | [
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"name": "Wei Lu",
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12016048 | 0903.5177 | 2009-03-30 | RFID Authentication, Efficient Proactive Information Security within Computational Security | We consider repeated communication sessions between a RFID Tag (e.g., Radio Frequency Identification, RFID Tag) and a RFID Verifier. A proactive information theoretic security scheme is proposed. The scheme is based on the assumption that the information exchanged during at least one of every n successive communication... | [
"cs.CR"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s dolev_1",
"name": "Shlomi Dolev",
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{
"author_id": "m kopeetsky_0",
"name": "Marina Kopeetsky",
"publication_history": null,
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"num_papers": null,... | null |
17075596 | 0903.5213 | 2009-03-30 | Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $\gamma$ Doradus stars | Gamma Doradus stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode identification will improve the knowledge of these stars considerably. A selected group of Gamma Doradus stars and some candidates were observed with the Mercator telescop... | [
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16913244 | 0903.5373 | 2009-03-31 | An adaptive step-down procedure with proven FDR control under independence | In this work we study an adaptive step-down procedure for testing $m$ hypotheses. It stems from the repeated use of the false discovery rate controlling the linear step-up procedure (sometimes called BH), and makes use of the critical constants $iq/[(m+1-i(1-q)]$, $i=1,...,m$. Motivated by its success as a model select... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
19929605 | 0904.0036 | 2009-03-31 | Optimized Noise Filtration through Dynamical Decoupling | One approach to maintaining phase coherence of qubits through dynamical decoupling consists of applying a sequence of Hahn spin-echo pulses. Recent studies have shown that, in certain noise environments, judicious choice of the delay times between these pulses can greatly improve the suppression of phase errors compare... | [
"quant-ph"
] | null | [
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] | [] | [
{
"author_id": "h uys_1",
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119163539 | 0903.5506 | 2009-03-31 | Higher Charmonia and X,Y,Z states with Screened Potential | We incorporate the color-screening effect due to light quark pair creation into the heavy quark-antiquark potential, and investigate the effects of screened potential on the spectrum of higher charmonium. We calculate the masses, electromagnetic decays, and E1 transitions of charmonium states in the screened potential ... | [
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7594542 | 0903.5535 | 2009-03-31 | Finite Approximations of Switched Homogeneous Systems for Controller Synthesis | We demonstrate the use of a new, control-oriented notion of finite state approximation for a particular class of hybrid systems. Specifically, we consider the problem of designing a stabilizing binary output feedback switching controller for a pair of unstable homogeneous second order systems. The constructive approach... | [
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8950658 | 0904.0016 | 2009-03-31 | Stochastic Models of User-Contributory Web Sites | We describe a general stochastic processes-based approach to modeling user-contributory web sites, where users create, rate and share content. These models describe aggregate measures of activity and how they arise from simple models of individual users. This approach provides a tractable method to understand user acti... | [
"cs.CY",
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15661729 | 0903.5480 | 2009-03-31 | The pseudo-marginal approach for efficient Monte Carlo computations | We introduce a powerful and flexible MCMC algorithm for stochastic simulation. The method builds on a pseudo-marginal method originally introduced in [Genetics 164 (2003) 1139--1160], showing how algorithms which are approximations to an idealized marginal algorithm, can share the same marginal stationary distribution ... | [
"math.ST",
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119223679 | 0903.5451 | 2009-03-31 | The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures | We report the final redshift release of the 6dF Galaxy Survey, a combined redshift and peculiar velocity survey over the southern sky (|b|>10 deg). Its 136,304 spectra have yielded 110,256 new extragalactic redshifts and a new catalogue of 125,071 galaxies making near-complete samples with (K, H, J, r_F, b_J) <= (12.65... | [
"astro-ph.CO"
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10117190 | 0903.5489 | 2009-03-31 | Heterogeneous pair approximation for voter models on networks | For models whose evolution takes place on a network it is often necessary to augment the mean-field approach by considering explicitly the degree dependence of average quantities (heterogeneous mean-field). Here we introduce the degree dependence in the pair approximation (heterogeneous pair approximation) for analyzin... | [
"cond-mat.stat-mech",
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] | null | null | null |
7226361 | 0903.5444 | 2009-03-31 | Stochastic model predictive control with bounded control inputs: a vector space approach | We design receding horizon control strategies for stochastic discrete-time linear systems with additive (possibly) unbounded disturbances, while obeying hard bounds on the control inputs. We pose the problem of selecting an appropriate optimal controller on vector spaces of functions and show that the resulting optimiz... | [
"math.OC"
] | null | [
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] | null | null | null |
18076246 | 0903.5520 | 2009-03-31 | On light propagation in premetric electrodynamics. Covariant dispersion relation | The premetric approach to electrodynamics provides a unified description of a wide class of electromagnetic phenomena. In particular, it involves axion, dilaton and skewon modifications of the classical electrodynamics. This formalism emerges also when the non-minimal coupling between the electromagnetic tensor and the... | [
"hep-th"
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6728607 | 0904.0019 | 2009-03-31 | On Solving Boolean Multilevel Optimization Problems | Many combinatorial optimization problems entail a number of hierarchically dependent optimization problems. An often used solution is to associate a suitably large cost with each individual optimization problem, such that the solution of the resulting aggregated optimization problem solves the original set of hierarchi... | [
"cs.LO",
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"name": "Inês Lynce",
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... | null |
15195500 | 0904.0274 | 2009-04-01 | Interference Alignment with Asymmetric Complex Signaling - Settling the Host-Madsen-Nosratinia Conjecture | It has been conjectured by Host-Madsen and Nosratinia that complex Gaussian interference channels with constant channel coefficients have only one degree-of-freedom regardless of the number of users. While several examples are known of constant channels that achieve more than 1 degree of freedom, these special cases on... | [
"cs.IT",
"math.IT"
] | null | [
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2735301 | 0904.0226 | 2009-04-01 | Coding Versus ARQ in Fading Channels: How reliable should the PHY be? | This paper studies the tradeoff between channel coding and ARQ (automatic repeat request) in Rayleigh block-fading channels. A heavily coded system corresponds to a low transmission rate with few ARQ re-transmissions, whereas lighter coding corresponds to a higher transmitted rate but more re-transmissions. The optimum... | [
"cs.IT",
"math.IT"
] | null | [
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] | null | null | null |
115161636 | 0904.0240 | 2009-04-01 | Spectral Filtrations via Generalized Morphisms | This paper introduces a reformulation of the classical convergence theorem for spectral sequences of filtered complexes which provides an algorithm to effectively compute the induced filtration on the total (co)homology, as soon as the complex is of finite type, its filtration is finite, and the underlying ring is comp... | [
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] | null | null | null |
3221355 | 0904.0156 | 2009-04-01 | The formal definition of reference priors | Reference analysis produces objective Bayesian inference, in the sense that inferential statements depend only on the assumed model and the available data, and the prior distribution used to make an inference is least informative in a certain information-theoretic sense. Reference priors have been rigorously defined in... | [
"math.ST",
"stat.TH"
] | null | [
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] | null | null | null |
14423853 | 0904.0106 | 2009-04-01 | Robust estimation for ARMA models | This paper introduces a new class of robust estimates for ARMA models. They are M-estimates, but the residuals are computed so the effect of one outlier is limited to the period where it occurs. These estimates are closely related to those based on a robust filter, but they have two important advantages: they are consi... | [
"math.ST",
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] | null | [
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17427470 | 0904.0200 | 2009-04-01 | Cluster mutation-periodic quivers and associated Laurent sequences | We consider quivers/skew-symmetric matrices under the action of mutation (in the cluster algebra sense). We classify those which are isomorphic to their own mutation via a cycle permuting all the vertices, and give families of quivers which have higher periodicity. The periodicity means that sequences given by recurren... | [
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12306710 | 0904.0098 | 2009-04-01 | A modified phase field approximation for mean curvature flow with conservation of the volume | This paper is concerned with the motion of a time dependent hypersurface that evolves by mean curvature flow with a a volume constraint. Phase field approximation of this motion leads to the well known nonlocal Allen--Cahn equation. Here we propose a modified version of this equation, and we show that it has better vol... | [
"math.NA",
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] | null | null | null |
5569632 | 0904.0076 | 2009-04-01 | An RKHS formulation of the inverse regression dimension-reduction problem | Suppose that $Y$ is a scalar and $X$ is a second-order stochastic process, where $Y$ and $X$ are conditionally independent given the random variables $\xi_1,...,\xi_p$ which belong to the closed span $L_X^2$ of $X$. This paper investigates a unified framework for the inverse regression dimension-reduction problem. It i... | [
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51998684 | 0904.0157 | 2009-04-01 | Noise Correlation Bounds for Uniform Low Degree Functions | We study correlation bounds under pairwise independent distributions for functions with no large Fourier coefficients. Functions in which all Fourier coefficients are bounded by $\delta$ are called $\delta$-{\em uniform}. The search for such bounds is motivated by their potential applicability to hardness of approximat... | [
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12279594 | 0904.0281 | 2009-04-02 | A Generalization of Quantum Stein's Lemma | We present a generalization of quantum Stein's Lemma to the situation in which the alternative hypothesis is formed by a family of states, which can moreover be non-i.i.d.. We consider sets of states which satisfy a few natural properties, the most important being the closedness under permutations of the copies. We the... | [
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8966092 | 0904.0308 | 2009-04-02 | Exponential decreasing rate of leaked information in universal random privacy amplification | We derive a new upper bound for Eve's information in secret key generation from a common random number without communication. This bound improves on Bennett et al(1995)'s bound based on the R\'enyi entropy of order 2 because the bound obtained here uses the R\'enyi entropy of order $1+s$ for $s \in [0,1]$. This bound i... | [
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13345747 | 0904.0339 | 2009-04-02 | Improved limits on lepton flavor violating tau decays to l phi, l rho, l K* and l K*bar | We search for the neutrinoless, lepton-flavor-violating tau decays tau -> l V^0, where l is an electron or muon and V^0 is a vector meson reconstructed as phi -> K^+K^-, rho -> pi^+pi^-, K^* -> K^+pi^-, or K^*bar -> K^-pi^+. The analysis has been performed using 451 fb^{-1} of data collected at an e^+e^- center-of-mass... | [
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"name": "Yannis Karyotakis",
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118379031 | 0904.0468 | 2009-04-02 | BigBOSS: The Ground-Based Stage IV Dark Energy Experiment | The BigBOSS experiment is a proposed DOE-NSF Stage IV ground-based dark energy experiment to study baryon acoustic oscillations (BAO) and the growth of structure with an all-sky galaxy redshift survey. The project is designed to unlock the mystery of dark energy using existing ground-based facilities operated by NOAO. ... | [
"astro-ph.CO"
] | null | [
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] | null | null | null |
1549791 | 0904.0494 | 2009-04-02 | Average Case Analysis of Multichannel Sparse Recovery Using Convex Relaxation | In this paper, we consider recovery of jointly sparse multichannel signals from incomplete measurements. Several approaches have been developed to recover the unknown sparse vectors from the given observations, including thresholding, simultaneous orthogonal matching pursuit (SOMP), and convex relaxation based on a mix... | [
"cs.IT",
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"name": "Holger Rauhut",
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14399971 | 0904.0350 | 2009-04-02 | Asymptotics in response-adaptive designs generated by a two-color, randomly reinforced urn | This paper illustrates asymptotic properties for a response-adaptive design generated by a two-color, randomly reinforced urn model. The design considered is optimal in the sense that it assigns patients to the best treatment, with probability converging to one. An approach to show the joint asymptotic normality of the... | [
"math.ST",
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] | null | [
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17809500 | 0904.0279 | 2009-04-02 | The North American and Pelican Nebulae I. IRAC Observations | We present a 9 deg^2 map of the North American and Pelican Nebulae regions obtained in all four IRAC channels with the Spitzer Space Telescope. The resulting photometry is merged with that at JHKs from 2MASS and a more spatially limited $BVI$ survey from previous ground-based work. We use a mixture of color- color diag... | [
"astro-ph.GA"
] | null | [
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] | null | null | null |
2049098 | 0904.0431 | 2009-04-02 | Hamilton cycles in 3-out | Let G_{\rm 3-out} denote the random graph on vertex set [n] in which each vertex chooses 3 neighbors uniformly at random. Note that G_{\rm 3-out} has minimum degree 3 and average degree 6. We prove that the probability that G_{\rm 3-out} is Hamiltonian goes to 1 as n tends to infinity. | [
"math.CO",
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14143504 | 0904.0352 | 2009-04-02 | Incremental Deployment of Network Monitors Based on Group Betweenness Centrality | In many applications we are required to increase the deployment of a distributed monitoring system on an evolving network. In this paper we present a new method for finding candidate locations for additional deployment in the network. This method is based on the Group Betweenness Centrality (GBC) measure that is used t... | [
"cs.DS"
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{
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"name": "Yuval Elovici",
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... | null |
10653609 | 0904.0377 | 2009-04-02 | Backward stochastic dynamics on a filtered probability space | We demonstrate that backward stochastic differential equations (BSDE) may be reformulated as ordinary functional differential equations on certain path spaces. In this framework, neither It\^{o}'s integrals nor martingale representation formulate are needed. This approach provides new tools for the study of BSDE, and i... | [
"math.PR"
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{
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"name": "Terry Lyons",
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16313609 | 0904.0370 | 2009-04-02 | Globally and locally supersymmetric effective theories for light fields | We reconsider the general question of how to characterize most efficiently the low-energy effective theory obtained by integrating out heavy modes in globally and locally supersymmetric theories. We consider theories with chiral and vector multiplets and identify the conditions under which an approximately supersymmetr... | [
"hep-th"
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{
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"name": "Marta Gómez-Reino",
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5175039 | 0904.0333 | 2009-04-02 | Matrix representations and independencies in directed acyclic graphs | For a directed acyclic graph, there are two known criteria to decide whether any specific conditional independence statement is implied for all distributions factorized according to the given graph. Both criteria are based on special types of path in graphs. They are called separation criteria because independence hold... | [
"math.ST",
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] | null | [
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] | null | null | null |
12662045 | 0904.0477 | 2009-04-02 | Message Passing for Optimization and Control of Power Grid: Model of Distribution System with Redundancy | We use a power grid model with $M$ generators and $N$ consumption units to optimize the grid and its control. Each consumer demand is drawn from a predefined finite-size-support distribution, thus simulating the instantaneous load fluctuations. Each generator has a maximum power capability. A generator is not overloade... | [
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{
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"name": "Aurélien Decelle",
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15196398 | 0904.0649 | 2009-04-03 | Quasar Feedback: More Bang for Your Buck | We propose a two-stage model for the effects of feedback from a bright quasar on the cold gas in a galaxy. It is difficult for feedback from near the accretion disk to directly impact dense molecular clouds at ~kpc. But if such feedback can drive a weak wind or outflow in the hot, diffuse ISM (a relatively 'easy' task)... | [
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16268365 | 0904.0583 | 2009-04-03 | Thin Partitions: Isoperimetric Inequalities and Sampling Algorithms for some Nonconvex Families | Star-shaped bodies are an important nonconvex generalization of convex bodies (e.g., linear programming with violations). Here we present an efficient algorithm for sampling a given star-shaped body. The complexity of the algorithm grows polynomially in the dimension and inverse polynomially in the fraction of the volu... | [
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{
"author_id": "d dadush_1",
"name": "Daniel Dadush",
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580788 | 0904.0644 | 2009-04-03 | Settling the Complexity of Arrow-Debreu Equilibria in Markets with Additively Separable Utilities | We prove that the problem of computing an Arrow-Debreu market equilibrium is PPAD-complete even when all traders use additively separable, piecewise-linear and concave utility functions. In fact, our proof shows that this market-equilibrium problem does not have a fully polynomial-time approximation scheme unless every... | [
"cs.CC",
"cs.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17713079 | 0904.0635 | 2009-04-03 | Approximate Bayesian Computation: a nonparametric perspective | Approximate Bayesian Computation is a family of likelihood-free inference techniques that are well-suited to models defined in terms of a stochastic generating mechanism. In a nutshell, Approximate Bayesian Computation proceeds by computing summary statistics s_obs from the data and simulating summary statistics for di... | [
"stat.CO",
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"stat.TH"
] | null | [
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14221804 | 0904.0584 | 2009-04-03 | Dual Augmented Lagrangian Method for Efficient Sparse Reconstruction | We propose an efficient algorithm for sparse signal reconstruction problems. The proposed algorithm is an augmented Lagrangian method based on the dual sparse reconstruction problem. It is efficient when the number of unknown variables is much larger than the number of observations because of the dual formulation. More... | [
"stat.ML",
"stat.ME"
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"name": "Masashi Sugiyama",
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14999040 | 0904.0582 | 2009-04-03 | Winding of planar gaussian processes | We consider a smooth, rotationally invariant, centered gaussian process in the plane, with arbitrary correlation matrix $C_{t t'}$. We study the winding angle $\phi_t$ around its center. We obtain a closed formula for the variance of the winding angle as a function of the matrix $C_{tt'}$. For most stationary processes... | [
"cond-mat.stat-mech"
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] | null | null | null |
10203160 | 0904.0682 | 2009-04-03 | Privacy in Search Logs | Search engine companies collect the "database of intentions", the histories of their users' search queries. These search logs are a gold mine for researchers. Search engine companies, however, are wary of publishing search logs in order not to disclose sensitive information. In this paper we analyze algorithms for publ... | [
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11357551 | 0904.0602 | 2009-04-03 | The Wiener-Khinchin Theorem for Non-wide Sense stationary Random Processes | We extend the Wiener-Khinchin theorem to non-wide sense stationary (WSS) random processes, i.e. we prove that, under certain assumptions, the power spectral density (PSD) of any random process is equal to the Fourier transform of the time-averaged autocorrelation function. We use the theorem to show that bandlimitednes... | [
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{
"author_id": "w lu_22",
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"name": "Namrata Vaswani",
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18011887 | 0904.0544 | 2009-04-03 | Mission-Aware Medium Access Control in Random Access Networks | We study mission-critical networking in wireless communication networks, where network users are subject to critical events such as emergencies and crises. If a critical event occurs to a user, the user needs to send necessary information for help as early as possible. However, most existing medium access control (MAC)... | [
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{
"author_id": "j park_116",
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"name": "Mihaela [\"van\",\"der\"] Schaar",
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154604557 | 0904.0555 | 2009-04-03 | The affine LIBOR models | We provide a general and flexible approach to LIBOR modeling based on the class of affine factor processes. Our approach respects the basic economic requirement that LIBOR rates are non-negative, and the basic requirement from mathematical finance that LIBOR rates are analytically tractable martingales with respect to ... | [
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},
{
"author_id": "a papapantoleon_1",
"name": "Antonis Papapantoleon",
"publication_history": null,
"h_index": null... | null |
8700239 | 0904.0493 | 2009-04-03 | Orbiting binary black hole evolutions with a multipatch high order finite-difference approach | We present numerical simulations of orbiting black holes for around twelve cycles, using a high-order multipatch approach. Unlike some other approaches, the computational speed scales almost perfectly for thousands of processors. Multipatch methods are an alternative to AMR (adaptive mesh refinement), with benefits of ... | [
"gr-qc"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "e pazos_1",
"name": "Enrique Pazos",
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{
"author_id": "m tiglio_1",
"name": "Manuel Tiglio",
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"h_index": null,
"num_papers": null,
... | null |
15971527 | 0904.0645 | 2009-04-04 | A Bayesian approach to the analysis of time symmetry in light curves: Reconsidering Scorpius X-1 occultations | We present a new approach to the analysis of time symmetry in light curves, such as those in the x-ray at the center of the Scorpius X-1 occultation debate. Our method uses a new parameterization for such events (the bilogistic event profile) and provides a clear, physically relevant characterization of each event's ke... | [
"astro-ph.IM",
"astro-ph.EP",
"stat.AP",
"stat.ME"
] | null | [
"target.author.publication_history"
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{
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{
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},
{
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] | [
{
"author_id": "a blocker_1",
"name": "Alexander [\"W.\"] Blocker",
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"num_citations": null
},
{
"author_id": "p protopapas_1",
"name": "Pavlos Protopapas",
"publication_history": null,
"h_index": null,
"... | null |
263596609 | 0904.0673 | 2009-04-04 | Measurement of the WW production cross section with dilepton final states in p-pbar collisions at sqrt(s)=1.96 TeV and limits on anomalous trilinear gauge couplings | We provide the most precise measurement of the WW production cross section in p-pbar collisions to date at a center of mass energy of 1.96 TeV, and set limits on the associated trilinear gauge couplings. The WW->lvl'v (l,l'=e,mu) decay channels are analyzed in 1 fb^(-1) of data collected by the D0 detector at the Fermi... | [
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5110188 | 0904.0727 | 2009-04-04 | (Meta) Kernelization | In a parameterized problem, every instance I comes with a positive integer k. The problem is said to admit a polynomial kernel if, in polynomial time, one can reduce the size of the instance I to a polynomial in k, while preserving the answer. In this work we give two meta-theorems on kernelzation. The first theorem sa... | [
"cs.DM",
"cs.DS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1512371 | 0904.0813 | 2009-04-05 | Projective Space Codes for the Injection Metric | In the context of error control in random linear network coding, it is useful to construct codes that comprise well-separated collections of subspaces of a vector space over a finite field. In this paper, the metric used is the so-called "injection distance", introduced by Silva and Kschischang. A Gilbert-Varshamov bou... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "12372886",
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},
{
"corpus_id": "718908",
"num_citations": null
}
] | [
{
"author_id": "a khaleghi_1",
"name": "Azadeh Khaleghi",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "f kschischang_1",
"name": "Frank [\"R.\"] Kschischang",
"publication_history": null,
"h_index": null,
"... | null |
154781748 | 0904.0900 | 2009-04-06 | The price impact of order book events: market orders, limit orders and cancellations | While the long-ranged correlation of market orders and their impact on prices has been relatively well studied in the literature, the corresponding studies of limit orders and cancellations are scarce. We provide here an empirical study of the cross-correlation between all these different events, and their respective i... | [
"q-fin.TR",
"q-fin.ST"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14938523 | 0904.0829 | 2009-04-06 | Cosmology of the Lifshitz universe | We study the ultraviolet complete non-relativistic theory recently proposed by Horava. After introducing a Lifshitz scalar for a general background, we analyze the cosmology of the model in Lorentzian and Euclidean signature. Vacuum solutions are found and it is argued the existence of non-singular bouncing profiles. W... | [
"hep-th",
"astro-ph.CO",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3851210 | 0904.0977 | 2009-04-06 | Bayesian MAP Model Selection of Chain Event Graphs | The class of chain event graph models is a generalisation of the class of discrete Bayesian networks, retaining most of the structural advantages of the Bayesian network for model interrogation, propagation and learning, while more naturally encoding asymmetric state spaces and the order in which events happen. In this... | [
"stat.ME",
"stat.ML"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8825019 | 0904.0924 | 2009-04-06 | Solvable Lie A-algebras | A finite-dimensional Lie algebra $L$ over a field $F$ is called an $A$-algebra if all of its nilpotent subalgebras are abelian. This is analogous to the concept of an $A$-group: a finite group with the property that all of its Sylow subgroups are abelian. These groups were first studied in the 1940s by Philip Hall, and... | [
"math.RA",
"math.RT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117402919 | 0904.0880 | 2009-04-06 | Origin of the spectral linewidth in non linear oscillators based on MgO tunnel junctions | We demonstrate the strong impact of the oscillator agility on the line broadening by studying spin transfer induced microwave emission in MgO-based tunnel junctions with current. The linewidth is almost not affected by decreasing the temperature. At very low currents, a strong enhancement of the linewidth at low temper... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "b georges_1",
"name": "Benoit Georges",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j grollier_1",
"name": "Julie Grollier",
"publication_history": null,
"h_index": null,
"num_papers": null... | null |
10637806 | 0904.1001 | 2009-04-06 | A public catalogue of stellar masses, star formation and metallicity histories and dust content from the Sloan Digital Sky Survey using VESPA | We applied the VESPA algorithm to the Sloan Digital Sky Survey final data release of the Main Galaxies and Luminous Red Galaxies samples. The result is a catalogue of stellar masses, detailed star formation and metallicity histories and dust content of nearly 800,000 galaxies. We make the catalogue public via a T-SQL d... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15713013 | 0904.0951 | 2009-04-06 | Inference on Counterfactual Distributions | Counterfactual distributions are important ingredients for policy analysis and decomposition analysis in empirical economics. In this article we develop modeling and inference tools for counterfactual distributions based on regression methods. The counterfactual scenarios that we consider consist of ceteris paribus cha... | [
"stat.ME",
"econ.EM",
"stat.AP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
268033504 | 0904.0942 | 2009-04-06 | Boosting the Accuracy of Differentially-Private Histograms Through Consistency | We show that it is possible to significantly improve the accuracy of a general class of histogram queries while satisfying differential privacy. Our approach carefully chooses a set of queries to evaluate, and then exploits consistency constraints that should hold over the noisy output. In a post-processing phase, we c... | [
"cs.DB",
"cs.CR"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference",
"target.key_reference"
] | [] | [
{
"author_id": "m hay_1",
"name": "Michael Hay",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "v rastogi_1",
"name": "Vibhor Rastogi",
"publication_history": null,
"h_index": null,
"num_papers": null,
"n... | null |
12259237 | 0904.0859 | 2009-04-06 | Approximability of Sparse Integer Programs | The main focus of this paper is a pair of new approximation algorithms for certain integer programs. First, for covering integer programs {min cx: Ax >= b, 0 <= x <= d} where A has at most k nonzeroes per row, we give a k-approximation algorithm. (We assume A, b, c, d are nonnegative.) For any k >= 2 and eps>0, if P !=... | [
"cs.DS",
"cs.DM"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10355691 | 0904.1018 | 2009-04-06 | Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List | We present the result of a search of the Milagro sky map for spatial correlations with sources from a subset of the recent Fermi Bright Source List (BSL). The BSL consists of the 205 most significant sources detected above 100 MeV by the Fermi Large Area Telescope. We select sources based on their categorization in the... | [
"astro-ph.HE",
"astro-ph.GA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1979368 | 0904.0994 | 2009-04-06 | Breaking through the Thresholds: an Analysis for Iterative Reweighted $\ell_1$ Minimization via the Grassmann Angle Framework | It is now well understood that $\ell_1$ minimization algorithm is able to recover sparse signals from incomplete measurements [2], [1], [3] and sharp recoverable sparsity thresholds have also been obtained for the $\ell_1$ minimization algorithm. However, even though iterative reweighted $\ell_1$ minimization algorithm... | [
"math.PR",
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "5879257",
"num_citations": null
}
] | [
{
"author_id": "w xu_79",
"name": "Weiyu Xu",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m khajehnejad_1",
"name": "M. [\"Amin\"] Khajehnejad",
"publication_history": null,
"h_index": null,
"num_papers": ... | null |
361882 | 0904.0828 | 2009-04-06 | On approximating Gaussian relay networks by deterministic networks | We examine the extent to which Gaussian relay networks can be approximated by deterministic networks, and present two results, one negative and one positive. The gap between the capacities of a Gaussian relay network and a corresponding linear deterministic network can be unbounded. The key reasons are that the linear ... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1513517 | 0904.1153 | 2009-04-07 | Invariance principles for homogeneous sums: Universality of Gaussian Wiener chaos | We compute explicit bounds in the normal and chi-square approximations of multilinear homogenous sums (of arbitrary order) of general centered independent random variables with unit variance. In particular, we show that chaotic random variables enjoy the following form of universality: (a) the normal and chi-square app... | [
"math.PR"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "263115528",
"num_citations": null
},
{
"corpus_id": "115171154",
"num_citations": null
},
{
"corpus_id": "10793389",
"num_citations": null
},
{
"corpus_id": "12293101",
"num_citations": null
},
{
"corpus_id": "17290966",
"num_citations": null
... | [
{
"author_id": "i nourdin_1",
"name": "Ivan Nourdin",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g peccati_1",
"name": "Giovanni Peccati",
"publication_history": null,
"h_index": null,
"num_papers": null,... | null |
15946400 | 0904.1157 | 2009-04-07 | Addressing the bias in Monte Carlo pricing of multi-asset options with multiple barriers through discrete sampling | An efficient conditioning technique, the so-called Brownian Bridge simulation, has previously been applied to eliminate pricing bias that arises in applications of the standard discrete-time Monte Carlo method to evaluate options written on the continuous-time extrema of an underlying asset. It is based on the simple a... | [
"q-fin.CP",
"q-fin.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119190596 | 0904.1055 | 2009-04-07 | Stereoscopic Analysis of the 19 May 2007 Erupting Filament | A filament eruption, accompanied by a B9.5 flare, coronal dimming and an EUV wave, was observed by the Solar TERrestrial Relations Observatory (STEREO) on 19 May 2007, beginning at about 13:00 UT. Here, we use observations from the SECCHI/EUVI telescopes and other solar observations to analyze the behavior and geometry... | [
"astro-ph.SR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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