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 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
3265771 | 0908.2925 | 2009-08-20 | On the optimality of the Arf invariant formula for graph polynomials | We prove optimality of the Arf invariant formula for the generating function of even subgraphs, or, equivalently, the Ising partition function, of a graph. | [
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1474741 | 0908.2997 | 2009-08-20 | A new raytracer for modeling AU-scale imaging of lines from protoplanetary disks | The material that formed the present-day Solar System originated in feeding zones in the inner Solar Nebula located at distances within ~20 AU from the Sun, known as the planet-forming zone. Meteoritic and cometary material contain abundant evidence for the presence of a rich and active chemistry in the planet-forming ... | [
"astro-ph.EP",
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] | null | [
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11123746 | 0908.2853 | 2009-08-20 | On the Structure of Cubic and Quartic Polynomials | In this paper we study the structure of polynomials of degree three and four that have high bias or high Gowers norm, over arbitrary prime fields. In particular we obtain the following results. 1. We give a canonical representation for degree three or four polynomials that have a significant bias (i.e. they are not equ... | [
"math.CO"
] | null | [
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{
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"author_id": "a shpilka_1",
"name": "Amir Shpilka",
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... | null |
118635603 | 0908.3032 | 2009-08-20 | The spin-orbit angle of the transiting hot jupiter CoRoT-1b | We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate a highly tilted system, with a projected spin-orbit angle lambda = 77 +- 11 degrees. Systematic uncertainties in the rad... | [
"astro-ph.EP",
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205219464 | 0908.2817 | 2009-08-20 | A Relativistic Type Ibc Supernova Without a Detected Gamma-ray Burst | Long duration gamma-ray bursts (GRBs) mark the explosive death of some massive stars and are a rare sub-class of Type Ibc supernovae (SNe Ibc). They are distinguished by the production of an energetic and collimated relativistic outflow powered by a central engine (an accreting black hole or neutron star). Observationa... | [
"astro-ph.HE",
"astro-ph.CO"
] | null | [
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] | null | null | null |
5743097 | 0908.2869 | 2009-08-20 | Some sharp performance bounds for least squares regression with $L_1$ regularization | We derive sharp performance bounds for least squares regression with $L_1$ regularization from parameter estimation accuracy and feature selection quality perspectives. The main result proved for $L_1$ regularization extends a similar result in [Ann. Statist. 35 (2007) 2313--2351] for the Dantzig selector. It gives an ... | [
"math.ST",
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] | null | [
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6963612 | 0908.3025 | 2009-08-20 | Techniques for Highly Multiobjective Optimisation: Some Nondominated Points are Better than Others | The research area of evolutionary multiobjective optimization (EMO) is reaching better understandings of the properties and capabilities of EMO algorithms, and accumulating much evidence of their worth in practical scenarios. An urgent emerging issue is that the favoured EMO algorithms scale poorly when problems have m... | [
"cs.NE"
] | null | [
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] | null | null | null |
14812188 | 0908.3004 | 2009-08-20 | Misfit-Dislocation-Mediated Heteroepitaxial Island Diffusion | Scanning tunneling microscopy combined with molecular dynamics simulations reveal a dislocation-mediated island diffusion mechanism for Cu on Ag(111), a highly mismatched system. Cluster motion is tracked with atomic precision at multiple temperatures and diffusion barriers and prefactors are determined from direct mea... | [
"cond-mat.mtrl-sci"
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"name": "A. [\"W.\"] Signor",
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"author_id": "h wu_2",
"name": "Henry [\"H.\"] Wu",
"publication_history": null,
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1052178 | 0908.2847 | 2009-08-20 | The Single Source Two Terminal Network with Network Coding | We consider a communication network with a single source that has a set of messages and two terminals where each terminal is interested in an arbitrary subset of messages at the source. A tight capacity region for this problem is demonstrated. We show by a simple graph-theoretic procedure that any such problem can be s... | [
"cs.IT",
"cs.NI",
"math.IT"
] | null | [
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1035359 | 0908.2918 | 2009-08-20 | Functional linear regression that's interpretable | Regression models to relate a scalar $Y$ to a functional predictor $X(t)$ are becoming increasingly common. Work in this area has concentrated on estimating a coefficient function, $\beta(t)$, with $Y$ related to $X(t)$ through $\int\beta(t)X(t) dt$. Regions where $\beta(t)\ne0$ correspond to places where there is a re... | [
"math.ST",
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] | null | [
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] | null | null | null |
12536482 | 0908.2984 | 2009-08-20 | Explicit Codes Minimizing Repair Bandwidth for Distributed Storage | We consider the setting of data storage across n nodes in a distributed manner. A data collector (DC) should be able to reconstruct the entire data by connecting to any k out of the n nodes and downloading all the data stored in them. When a node fails, it has to be regenerated back using the existing nodes. In a recen... | [
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"author_id": "n shah_20",
"name": "Nihar [\"B.\"] Shah",
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"author_id": "k rashmi_1",
"name": "K. [\"V.\"] Rashmi",
"publication_history": null,
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14246410 | 0908.2926 | 2009-08-20 | Analysis of error propagation in particle filters with approximation | This paper examines the impact of approximation steps that become necessary when particle filters are implemented on resource-constrained platforms. We consider particle filters that perform intermittent approximation, either by subsampling the particles or by generating a parametric approximation. For such algorithms,... | [
"math.PR",
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"name": "Boris [\"N.\"] Oreshkin",
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"author_id": "m coates_1",
"name": "Mark [\"J.\"] Coates",
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18874639 | 0908.2994 | 2009-08-21 | Orbifold Phases of Heterotic Flux Vacua | By studying phase transitions in supersymmetric gauge theories with Green-Schwarz anomaly cancellation, a natural relation is found between sigma models on certain non-Kahler manifolds with intrinsic torsion and asymmetric Landau-Ginzburg orbifolds. In these orbifold limits, a quantum anomaly of the orbifold action is ... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
260503980 | 0908.3177 | 2009-08-21 | The impact factor's Matthew effect: a natural experiment in bibliometrics | Since the publication of Robert K. Merton's theory of cumulative advantage in science (Matthew Effect), several empirical studies have tried to measure its presence at the level of papers, individual researchers, institutions or countries. However, these studies seldom control for the intrinsic "quality" of papers or o... | [
"physics.soc-ph",
"cs.DL"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1067028 | 0908.3108 | 2009-08-21 | Nonparametric estimation by convex programming | The problem we concentrate on is as follows: given (1) a convex compact set $X$ in ${\mathbb{R}}^n$, an affine mapping $x\mapsto A(x)$, a parametric family $\{p_{\mu}(\cdot)\}$ of probability densities and (2) $N$ i.i.d. observations of the random variable $\omega$, distributed with the density $p_{A(x)}(\cdot)$ for so... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
59060280 | 0908.3127 | 2009-08-21 | Minimal generating sets of Reidemeister moves | It is well known that any two diagrams representing the same oriented link are related by a finite sequence of Reidemeister moves O1, O2 and O3. Depending on orientations of fragments involved in the moves, one may distinguish 4 different versions of each of the O1 and O2 moves, and 8 versions of the O3 move. We introd... | [
"math.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2153955 | 0908.3095 | 2009-08-21 | Estimating the degree of activity of jumps in high frequency data | We define a generalized index of jump activity, propose estimators of that index for a discretely sampled process and derive the estimators' properties. These estimators are applicable despite the presence of Brownian volatility in the process, which makes it more challenging to infer the characteristics of the small, ... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1236575 | 0908.3098 | 2009-08-21 | Throughput of Cellular Uplink with Dynamic User Activity and Cooperative Base-Stations | The throughput of a linear cellular uplink with a random number of users, different power control schemes, and cooperative base stations is considered in the large system limit where the number of cells is large for non fading Gaussian channels. The analysis is facilitated by establishing an analogy between the cellula... | [
"cs.IT",
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{
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"name": "Osvaldo Simeone",
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... | null |
15153736 | 0908.3262 | 2009-08-22 | Bayesian interpretation of periodograms | The usual nonparametric approach to spectral analysis is revisited within the regularization framework. Both usual and windowed periodograms are obtained as the squared modulus of the minimizer of regularized least squares criteria. Then, particular attention is paid to their interpretation within the Bayesian statisti... | [
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"author_id": "j giovannelli_1",
"name": "Jean-François Giovannelli",
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"author_id": "j idier_1",
"name": "Jérôme Idier",
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14311512 | 0908.3259 | 2009-08-22 | Regularized adaptive long autoregressive spectral analysis | This paper is devoted to adaptive long autoregressive spectral analysis when (i) very few data are available, (ii) information does exist beforehand concerning the spectral smoothness and time continuity of the analyzed signals. The contribution is founded on two papers by Kitagawa and Gersch. The first one deals with ... | [
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{
"author_id": "j giovannelli_1",
"name": "Jean-François Giovannelli",
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{
"author_id": "j idier_1",
"name": "Jérôme Idier",
"publication_history": null,
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17029636 | 0908.3250 | 2009-08-22 | An Improved Observation Model for Super-Resolution under Affine Motion | Super-resolution (SR) techniques make use of subpixel shifts between frames in an image sequence to yield higher-resolution images. We propose an original observation model devoted to the case of non isometric inter-frame motion as required, for instance, in the context of airborne imaging sensors. First, we describe h... | [
"stat.AP"
] | null | [
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{
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"author_id": "f champagnat_1",
"name": "Frédéric Champagnat",
"publication_history": null,
"h_index": null,
"num_pa... | null |
6542822 | 0908.3258 | 2009-08-22 | Unsupervised Frequency Tracking beyond the Nyquist Limit using Markov Chains | This paper deals with the estimation of a sequence of frequencies from a corresponding sequence of signals. This problem arises in fields such as Doppler imaging where its specificity is twofold. First, only short noisy data records are available (typically four sample long) and experimental constraints may cause spect... | [
"stat.AP"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j giovannelli_1",
"name": "Jean-François Giovannelli",
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},
{
"author_id": "j idier_1",
"name": "Jérôme Idier",
"publication_history": null,
"h_index": null,
"num_pap... | null |
13171436 | 0908.3269 | 2009-08-22 | A Stable On-line Algorithm for Energy Efficient Multi-user Scheduling | In this paper, we consider the problem of energy efficient uplink scheduling with delay constraint for a multi-user wireless system. We address this problem within the framework of constrained Markov decision processes (CMDPs) wherein one seeks to minimize one cost (average power) subject to a hard constraint on anothe... | [
"cs.NI",
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] | null | [
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{
"author_id": "n salodkar_1",
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"author_id": "a karandikar_2",
"name": "Abhay Karandikar",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
7119977 | 0908.3317 | 2009-08-23 | Multipath Wireless Network Coding: A Population Game Perspective | We consider wireless networks in which multiple paths are available between each source and destination. We allow each source to split traffic among all of its available paths, and ask the question: how do we attain the lowest possible number of transmissions to support a given traffic matrix? Traffic bound in opposite... | [
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"cs.NI"
] | null | [
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{
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"author_id": "s shakkottai_2",
"name": "Srinivas Shakkottai",
"publication_history": null,
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"num_papers": n... | null |
8477212 | 0908.3347 | 2009-08-23 | A survey of graphical languages for monoidal categories | This article is intended as a reference guide to various notions of monoidal categories and their associated string diagrams. It is hoped that this will be useful not just to mathematicians, but also to physicists, computer scientists, and others who use diagrammatic reasoning. We have opted for a somewhat informal tre... | [
"math.CT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7083657 | 0908.3302 | 2009-08-23 | Reflected Brownian motion in Weyl chambers | We supply two different descriptions of the pushing process driving the reflected Brownian motion in Weyl chambers, when the latter domains are simplexes. The first one shows that a simple root lies in one and only one orbit if and only if the pushing process in the direction of that simple root increases as the sum of... | [
"math.PR"
] | null | [
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] | [] | [
{
"author_id": "n demni_1",
"name": "Nizar Demni",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
4005023 | 0908.3544 | 2009-08-24 | On the Second Order Statistics of the Multihop Rayleigh Fading Channel | Second order statistics provides a dynamic representation of a fading channel and plays an important role in the evaluation and design of the wireless communication systems. In this paper, we present a novel analytical framework for the evaluation of important second order statistical parameters, as the level crossing ... | [
"cs.IT",
"math.IT"
] | null | [
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] | [] | [
{
"author_id": "z hadzi-velkov_1",
"name": "Zoran Hadzi-Velkov",
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{
"author_id": "n zlatanov_1",
"name": "N. Zlatanov",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
11068731 | 0908.3473 | 2009-08-24 | Lattice point methods for combinatorial games | We encode arbitrary finite impartial combinatorial games in terms of lattice points in rational convex polyhedra. Encodings provided by these \emph{lattice games} can be made particularly efficient for octal games, which we generalize to \emph{squarefree games}. These additionally encompass all heap games in a natural ... | [
"math.CO",
"math.AC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118367452 | 0908.3433 | 2009-08-24 | Nuclear physics for geo-neutrino studies | Geo-neutrino studies are based on theoretical estimates of geo-neutrino spectra. We propose a method for a direct measurement of the energy distribution of antineutrinos from decays of long-lived radioactive isotopes. We present preliminary results for the geo-neutrinos from Bi-214 decay, a process which accounts for a... | [
"nucl-ex",
"nucl-th",
"physics.geo-ph"
] | null | [
"target.author.publication_history",
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] | [] | [
{
"author_id": "g fiorentini_2",
"name": "Gianni Fiorentini",
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},
{
"author_id": "a ianni_1",
"name": "Al. Ianni",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
10331346 | 0908.3447 | 2009-08-24 | Recurrence networks - A novel paradigm for nonlinear time series analysis | This paper presents a new approach for analysing structural properties of time series from complex systems. Starting from the concept of recurrences in phase space, the recurrence matrix of a time series is interpreted as the adjacency matrix of an associated complex network which links different points in time if the ... | [
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12573126 | 0908.3428 | 2009-08-24 | Hypothesis test for normal mixture models: The EM approach | Normal mixture distributions are arguably the most important mixture models, and also the most technically challenging. The likelihood function of the normal mixture model is unbounded based on a set of random samples, unless an artificial bound is placed on its component variance parameter. Moreover, the model is not ... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7140567 | 0908.3436 | 2009-08-24 | Rank-based attachment leads to power law graphs | We investigate the degree distribution resulting from graph generation models based on rank-based attachment. In rank-based attachment, all vertices are ranked according to a ranking scheme. The link probability of a given vertex is proportional to its rank raised to the power -a, for some a in (0,1). Through a rigorou... | [
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{
"corpus_id": "11357370",
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] | [
{
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{
"author_id": "p prałat_1",
"name": "Paweł Prałat",
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"nu... | null |
12145903 | 0908.3501 | 2009-08-24 | Strongly nonlinear dynamics of electrolytes in large ac voltages | We study the response of a model micro-electrochemical cell to a large ac voltage of frequency comparable to the inverse cell relaxation time. To bring out the basic physics, we consider the simplest possible model of a symmetric binary electrolyte confined between parallel-plate blocking electrodes, ignoring any trans... | [
"physics.flu-dyn"
] | null | [
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{
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{
"author_id": "m bazant_1",
"name": "Martin [\"Z.\"] Bazant",
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"h_index": null,... | null |
10061259 | 0908.3416 | 2009-08-24 | Taylor Expansion and Discretization Errors in Gaussian Beam Superposition | The Gaussian beam superposition method is an asymptotic method for computing high frequency wave fields in smoothly varying inhomogeneous media. In this paper we study the accuracy of the Gaussian beam superposition method and derive error estimates related to the discretization of the superposition integral and the Ta... | [
"math.NA"
] | null | [
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] | [] | [
{
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{
"author_id": "o runborg_1",
"name": "Olof Runborg",
"publication_history": null,
"h_index": null,
"num_papers": null,... | null |
6094429 | 0908.3437 | 2009-08-24 | On combinatorial testing problems | We study a class of hypothesis testing problems in which, upon observing the realization of an $n$-dimensional Gaussian vector, one has to decide whether the vector was drawn from a standard normal distribution or, alternatively, whether there is a subset of the components belonging to a certain given class of sets who... | [
"math.ST",
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"stat.TH"
] | null | [
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] | null | null | null |
2940274 | 0908.3541 | 2009-08-24 | Level Crossing Rate and Average Fade Duration of the Double Nakagami-m Random Process and Application in MIMO Keyhole Fading Channels | We present novel exact expressions and accurate closed-form approximations for the level crossing rate (LCR) and the average fade duration (AFD) of the double Nakagami-m random process. These results are then used to study the second order statistics of multiple input multiple output (MIMO) keyhole fading channels with... | [
"cs.IT",
"math.IT"
] | null | [
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{
"author_id": "n zlatanov_1",
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{
"author_id": "z hadzi-velkov_1",
"name": "Zoran Hadzi-Velkov",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
1813662 | 0908.3396 | 2009-08-24 | Hierarchical models in statistical inverse problems and the Mumford--Shah functional | The Bayesian methods for linear inverse problems is studied using hierarchical Gaussian models. The problems are considered with different discretizations, and we analyze the phenomena which appear when the discretization becomes finer. A hierarchical solution method for signal restoration problems is introduced and st... | [
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{
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{
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] | [
{
"author_id": "t helin_1",
"name": "Tapio Helin",
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{
"author_id": "m lassas_1",
"name": "Matti Lassas",
"publication_history": null,
"h_index": null,
"num_papers": null,
"nu... | null |
14183130 | 0908.3413 | 2009-08-24 | Bayesian frequentist hybrid inference | Bayesian and frequentist methods differ in many aspects, but share some basic optimality properties. In practice, there are situations in which one of the methods is more preferred by some criteria. We consider the case of inference about a set of multiple parameters, which can be divided into two disjoint subsets. On ... | [
"math.ST",
"stat.TH"
] | null | [
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4014109 | 0908.3539 | 2009-08-25 | An Accurate Approximation to the Distribution of the Sum of Equally Correlated Nakagami-m Envelopes and its Application in Equal Gain Diversity Receivers | We present a novel and accurate approximation for the distribution of the sum of equally correlated Nakagami-m variates. Ascertaining on this result we study the performance of Equal Gain Combining (EGC) receivers, operating over equally correlating fading channels. Numerical results and simulations show the accuracy o... | [
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16596802 | 0908.3556 | 2009-08-25 | Adaptive Bayesian estimation using a Gaussian random field with inverse Gamma bandwidth | We consider nonparametric Bayesian estimation inference using a rescaled smooth Gaussian field as a prior for a multidimensional function. The rescaling is achieved using a Gamma variable and the procedure can be viewed as choosing an inverse Gamma bandwidth. The procedure is studied from a frequentist perspective in t... | [
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15911892 | 0908.3588 | 2009-08-25 | High Resolution Near-Infrared Survey of the Pipe Nebula I: A Deep Infrared Extinction Map of Barnard 59 | We present our analysis of a fully sampled, high resolution dust extinction map of the Barnard 59 complex in the Pipe Nebula. The map was constructed with the infrared color excess technique applied to a photometric catalog that combines data from both ground and space based observations. The map resolves for the first... | [
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8288532 | 0908.3574 | 2009-08-25 | In-packet Bloom filters: Design and networking applications | The Bloom filter (BF) is a well-known space-efficient data structure that answers set membership queries with some probability of false positives. In an attempt to solve many of the limitations of current inter-networking architectures, some recent proposals rely on including small BFs in packet headers for routing, se... | [
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14311416 | 0908.3666 | 2009-08-25 | On the minimal penalty for Markov order estimation | We show that large-scale typicality of Markov sample paths implies that the likelihood ratio statistic satisfies a law of iterated logarithm uniformly to the same scale. As a consequence, the penalized likelihood Markov order estimator is strongly consistent for penalties growing as slowly as log log n when an upper bo... | [
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261727341 | 0908.3597 | 2009-08-25 | Dust in brown dwarfs and extra-solar planets II. Cloud formation for cosmologically evolving abundances | Substellar objects have extremely long life-spans. The cosmological consequence for older objects are low abundances of heavy elements, which results in a wide distribution of objects over metallicity, hence over age. Within their cool atmosphere, dust clouds become a dominant feature, affecting the opacity and the rem... | [
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14608151 | 0908.3665 | 2009-08-25 | X-Pipeline: An analysis package for autonomous gravitational-wave burst searches | Autonomous gravitational-wave searches -- fully automated analyses of data that run without human intervention or assistance -- are desirable for a number of reasons. They are necessary for the rapid identification of gravitational-wave burst candidates, which in turn will allow for follow-up observations by other obse... | [
"gr-qc"
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2089181 | 0908.3559 | 2009-08-25 | Spaser as Nanoscale Quantum Generator and Ultrafast Amplifier | Nanoplasmonics has recently experienced explosive development with many novel ideas and dramatic achievements in both fundamentals and applications. The spaser has been predicted and observed experimentally as an active element -- generator of coherent local fields. Even greater progress will be achieved if the spaser ... | [
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] | null | null | null |
15255390 | 0908.3605 | 2009-08-25 | Markov equivalence for ancestral graphs | Ancestral graphs can encode conditional independence relations that arise in directed acyclic graph (DAG) models with latent and selection variables. However, for any ancestral graph, there may be several other graphs to which it is Markov equivalent. We state and prove conditions under which two maximal ancestral grap... | [
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333932 | 0908.3593 | 2009-08-25 | Adaptive Hausdorff estimation of density level sets | Consider the problem of estimating the $\gamma$-level set $G^*_{\gamma}=\{x:f(x)\geq\gamma\}$ of an unknown $d$-dimensional density function $f$ based on $n$ independent observations $X_1,...,X_n$ from the density. This problem has been addressed under global error criteria related to the symmetric set difference. Howe... | [
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645309 | 0908.3710 | 2009-08-25 | Randomization for Security in Half-Duplex Two-Way Gaussian Channels | This paper develops a new physical layer framework for secure two-way wireless communication in the presence of a passive eavesdropper, i.e., Eve. Our approach achieves perfect information theoretic secrecy via a novel randomized scheduling and power allocation scheme. The key idea is to allow Alice and Bob to send sym... | [
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"name": "Moustafa [\"A.\"] Youssef",
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17177146 | 0908.3576 | 2009-08-25 | Local linear quantile estimation for nonstationary time series | We consider estimation of quantile curves for a general class of nonstationary processes. Consistency and central limit results are obtained for local linear quantile estimates under a mild short-range dependence condition. Our results are applied to environmental data sets. In particular, our results can be used to ad... | [
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540270 | 0908.3549 | 2009-08-25 | Level Crossing Rate and Average Fade Duration of the Multihop Rayleigh Fading Channel | We present a novel analytical framework for the evaluation of important second order statistical parameters, as the level crossing rate (LCR) and the average fade duration (AFD) of the amplify-and-forward multihop Rayleigh fading channel. More specifically, motivated by the fact that this channel is a cascaded one, whi... | [
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"author_id": "n zlatanov_1",
"name": "N. Zlatanov",
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338091 | 0908.3633 | 2009-08-25 | Maximizing profit using recommender systems | Traditional recommendation systems make recommendations based solely on the customer's past purchases, product ratings and demographic data without considering the profitability the items being recommended. In this work we study the question of how a vendor can directly incorporate the profitability of items into its r... | [
"cs.CY",
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13410364 | 0908.3740 | 2009-08-26 | An Oblivious O(1)-Approximation for Single Source Buy-at-Bulk | We consider the single-source (or single-sink) buy-at-bulk problem with an unknown concave cost function. We want to route a set of demands along a graph to or from a designated root node, and the cost of routing x units of flow along an edge is proportional to some concave, non-decreasing function f such that f(0) = 0... | [
"cs.DS",
"cs.DM"
] | null | [
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] | null | null | null |
119292860 | 0908.3877 | 2009-08-26 | Typicality in random matrix product states | Recent results suggest that the use of ensembles in Statistical Mechanics may not be necessary for isolated systems, since typically the states of the Hilbert space would have properties similar to the ones of the ensemble. Nevertheless, it is often argued that most of the states of the Hilbert space are non-physical a... | [
"quant-ph",
"cond-mat.stat-mech"
] | null | [
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] | null | null | null |
119248700 | 0908.3729 | 2009-08-26 | A minimal model linking two great mysteries: neutrino mass and dark matter | We present an economic model that establishes a link between neutrino masses and properties of the dark matter candidate. The particle content of the model can be divided into two groups: light particles with masses lighter than the electroweak scale and heavy particles. The light particles, which also include the dark... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11677832 | 0908.3850 | 2009-08-26 | New graph polynomials from the Bethe approximation of the Ising partition function | We introduce two graph polynomials and discuss their properties. One is a polynomial of two variables whose investigation is motivated by the performance analysis of the Bethe approximation of the Ising partition function. The other is a polynomial of one variable that is obtained by the specialization of the first one... | [
"math.CO",
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"name": "Kenji Fukumizu",
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15188533 | 0908.3757 | 2009-08-26 | Symmetry group classification for general Burger's equation | The present paper solves the problem of the group classification of the general Burgers' equation $u_t=f(x,u)u_x^2+g(x,u)u_{xx}$, where $f$ and $g$ are arbitrary smooth functions of the variable $x$ and $u$, by using Lie method. The paper is one of the few applications of an algebraic approach to the problem of group c... | [
"math.DG",
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] | null | null | null |
263789952 | 0908.3824 | 2009-08-26 | Search for gravitational-wave bursts associated with gamma-ray bursts using data from LIGO Science Run 5 and Virgo Science Run 1 | We present the results of a search for gravitational-wave bursts associated with 137 gamma-ray bursts (GRBs) that were detected by satellite-based gamma-ray experiments during the fifth LIGO science run and first Virgo science run. The data used in this analysis were collected from 2005 November 4 to 2007 October 1, an... | [
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{
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{
"author_id": "v abbott_1",
"name": "Virgo [\"Collaboration\",\"B.\",\"P.\"] Abbott",
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88518160 | 0908.3856 | 2009-08-26 | Self-consistent method for density estimation | The estimation of a density profile from experimental data points is a challenging problem, usually tackled by plotting a histogram. Prior assumptions on the nature of the density, from its smoothness to the specification of its form, allow the design of more accurate estimation procedures, such as Maximum Likelihood. ... | [
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"author_id": "s pigolotti_1",
"name": "Simone Pigolotti",
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53510631 | 0908.3779 | 2009-08-26 | Transverse masses and kinematic constraints: from the boundary to the crease | We re-examine the kinematic variable m_T2 and its relatives in the light of recent work by Cheng and Han. Their proof that m_T2 admits an equivalent, but implicit, definition as the `boundary of the region of parent and daughter masses that is kinematically consistent with the event hypothesis' is far-reaching in its c... | [
"hep-ph"
] | null | [
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9833257 | 0908.3861 | 2009-08-26 | Fast adaptive elliptical filtering using box splines | We demonstrate that it is possible to filter an image with an elliptic window of varying size, elongation and orientation with a fixed computational cost per pixel. Our method involves the application of a suitable global pre-integrator followed by a pointwise-adaptive localization mesh. We present the basic theory for... | [
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{
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61360696 | 0908.3817 | 2009-08-26 | Learning Bayesian Networks with the bnlearn R Package | bnlearn is an R package which includes several algorithms for learning the structure of Bayesian networks with either discrete or continuous variables. Both constraint-based and score-based algorithms are implemented, and can use the functionality provided by the snow package to improve their performance via parallel c... | [
"stat.ML"
] | null | [
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] | null | null | null |
17087289 | 0908.3913 | 2009-08-26 | Thermodynamic theory of dislocation-mediated plasticity | We reformulate the theory of polycrystalline plasticity, in externally driven, nonequilibrium situations, by writing equations of motion for the flow of energy and entropy associated with dislocations. Within this general framework, and using a minimal model of thermally assisted depinning with essentially only one adj... | [
"cond-mat.mtrl-sci",
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{
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"name": "Eran Bouchbinder",
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1726376 | 0908.3886 | 2009-08-26 | Cooperative Routing for Wireless Networks using Mutual-Information Accumulation | Cooperation between the nodes of wireless multihop networks can increase communication reliability, reduce energy consumption, and decrease latency. The possible improvements are even greater when nodes perform mutual information accumulation using rateless codes. In this paper, we investigate routing problems in such ... | [
"cs.IT",
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{
"author_id": "l liu_155",
"name": "Lingjia Liu",
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1230983 | 0908.3889 | 2009-08-26 | Integrating Post-Newtonian Equations on Graphics Processing Units | We report on early results of a numerical and statistical study of binary black hole inspirals. The two black holes are evolved using post-Newtonian approximations starting with initially randomly distributed spin vectors. We characterize certain aspects of the distribution shortly before merger. In particular we note ... | [
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7598187 | 0908.3934 | 2009-08-27 | A framework for simulating and estimating the state and functional topology of complex dynamic geometric networks | We present a framework for simulating signal propagation in geometric networks (i.e. networks that can be mapped to geometric graphs in some space) and for developing algorithms that estimate (i.e. map) the state and functional topology of complex dynamic geometric net- works. Within the framework we define the key fea... | [
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43237919 | 0908.4010 | 2009-08-27 | Water, Methane, and Carbon Dioxide Present in the Dayside Spectrum of the Exoplanet HD 209458b | Using the NICMOS instrument on the Hubble Space Telescope, we have measured the dayside spectrum of HD 209458b between 1.5--2.5 microns. The emergent spectrum is dominated by features due to the presence of methane (CH4) and water vapor (H2O), with smaller contributions from carbon dioxide (CO2). Combining this near-in... | [
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17372476 | 0908.4085 | 2009-08-27 | ArborZ: Photometric Redshifts Using Boosted Decision Trees | Precision photometric redshifts will be essential for extracting cosmological parameters from the next generation of wide-area imaging surveys. In this paper we introduce a photometric redshift algorithm, ArborZ, based on the machine-learning technique of Boosted Decision Trees. We study the algorithm using galaxies fr... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119203469 | 0908.4092 | 2009-08-27 | Rotation Velocities for M-dwarfs | We present spectroscopic rotation velocities (v sin i) for 56 M dwarf stars using high resolution HET HRS red spectroscopy. In addition we have also determined photometric effective temperatures, masses and metallicities ([Fe/H]) for some stars observed here and in the literature where we could acquire accurate paralla... | [
"astro-ph.SR",
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] | null | [
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] | null | null | null |
59489724 | 0908.4022 | 2009-08-27 | The orientation and kinematics of inner tidal tails around dwarf galaxies orbiting the Milky Way | Using high-resolution collisionless N-body simulations we study the properties of tidal tails formed in the immediate vicinity of a two-component dwarf galaxy evolving in a static potential of the Milky Way (MW). The stellar component of the dwarf is initially in the form of a disk and the galaxy is placed on an eccent... | [
"astro-ph.GA",
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] | null | [
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] | null | null | null |
9837149 | 0908.3981 | 2009-08-27 | Computing with Noise - Phase Transitions in Boolean Formulas | Computing circuits composed of noisy logical gates and their ability to represent arbitrary Boolean functions with a given level of error are investigated within a statistical mechanics setting. Bounds on their performance, derived in the information theory literature for specific gates, are straightforwardly retrieved... | [
"cond-mat.dis-nn",
"cs.CC"
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] | null | null | null |
16726685 | 0908.3950 | 2009-08-27 | The correlation of fractal structures in the photospheric and the coronal magnetic field | This work examines the relation between the fractal properties of the photospheric magnetic patterns and those of the coronal magnetic fields in solar active regions.Our results show no correlation between the fractal dimensions of the observed 2d photospheric structures and the extrapolated unstable volumes in the cor... | [
"astro-ph.SR"
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{
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"author_id": "m georgoulis_1",
"name": "Manolis [\"K.\"] Georgoulis",
"publication_history": null,
"h_index":... | null |
14877553 | 0908.4052 | 2009-08-27 | Quantization of Integrable Systems and Four Dimensional Gauge Theories | We study four dimensional N=2 supersymmetric gauge theory in the Omega-background with the two dimensional N=2 super-Poincare invariance. We explain how this gauge theory provides the quantization of the classical integrable system underlying the moduli space of vacua of the ordinary four dimensional N=2 theory. The ep... | [
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] | null | [
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9958949 | 0908.4206 | 2009-08-28 | Trapping in scale-free networks with hierarchical organization of modularity | A wide variety of real-life networks share two remarkable generic topological properties: scale-free behavior and modular organization, and it is natural and important to study how these two features affect the dynamical processes taking place on such networks. In this paper, we investigate a simple stochastic process-... | [
"cond-mat.stat-mech",
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{
"author_id": "z zhang_150",
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{
"author_id": "y lin_82",
"name": "Yuan Lin",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num... | null |
3246290 | 0908.4167 | 2009-08-28 | Bernstein Von Mises Theorem for linear functionals of the density | In this paper, we study the asymptotic posterior distribution of linear functionals of the density. In particular, we give general conditions to obtain a semiparametric version of the Bernstein-Von Mises theorem. We then apply this general result to nonparametric priors based on infinite dimensional exponential familie... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17597272 | 0908.4277 | 2009-08-28 | The Sloan Digital Sky Survey-II: Photometry and Supernova Ia Light Curves from the 2005 data | We present ugriz light curves for 146 spectroscopically confirmed or spectroscopically probable Type Ia supernovae from the 2005 season of the SDSS-II Supernova survey. The light curves have been constructed using a photometric technique that we call scene modelling, which is described in detail here; the major feature... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17538819 | 0908.4280 | 2009-08-28 | SNANA: A Public Software Package for Supernova Analysis | We describe a general analysis package for supernova (SN) light curves, called SNANA, that contains a simulation, light curve fitter, and cosmology fitter. The software is designed with the primary goal of using SNe Ia as distance indicators for the determination of cosmological parameters, but it can also be used to s... | [
"astro-ph.CO",
"astro-ph.IM"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15994895 | 0908.4162 | 2009-08-28 | The JCMT Legacy Survey of the Gould Belt: a first look at Orion B with HARP | The Gould Belt Legacy Survey will survey nearby star-forming regions (within 500 pc), using HARP (Heterodyne Array Receiver Programme), SCUBA-2 (Submillimetre Common- User Bolometer Array 2) and POL-2 (Polarimeter 2) on the James Clerk Maxwell Telescope (JCMT). This paper describes the initial data obtained using HARP ... | [
"astro-ph.GA"
] | null | [
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{
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118392916 | 0908.4274 | 2009-08-28 | First-year Sloan Digital Sky Survey-II (SDSS-II) Supernova Results: Hubble Diagram and Cosmological Parameters | We present measurements of the Hubble diagram for 103 Type Ia supernovae (SNe) with redshifts 0.04 < z < 0.42, discovered during the first season (Fall 2005) of the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. These data fill in the redshift "desert" between low- and high-redshift SN Ia surveys. We combine t... | [
"astro-ph.CO"
] | null | [
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] | null | null | null |
15480180 | 0908.4427 | 2009-08-30 | Mesh Algorithms for PDE with Sieve I: Mesh Distribution | We have developed a new programming framework, called Sieve, to support parallel numerical PDE algorithms operating over distributed meshes. We have also developed a reference implementation of Sieve in C++ as a library of generic algorithms operating on distributed containers conforming to the Sieve interface. Sieve m... | [
"cs.CE",
"cs.MS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5772918 | 0908.4400 | 2009-08-30 | Theoretical properties of the log-concave maximum likelihood estimator of a multidimensional density | We present theoretical properties of the log-concave maximum likelihood estimator of a density based on an independent and identically distributed sample in $\mathbb{R}^d$. Our study covers both the case where the true underlying density is log-concave, and where this model is misspecified. We begin by showing that for... | [
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14805521 | 0908.4425 | 2009-08-30 | Geometry of the restricted Boltzmann machine | The restricted Boltzmann machine is a graphical model for binary random variables. Based on a complete bipartite graph separating hidden and observed variables, it is the binary analog to the factor analysis model. We study this graphical model from the perspectives of algebraic statistics and tropical geometry, starti... | [
"stat.ML",
"math.AG",
"math.MG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119289591 | 0908.4563 | 2009-08-31 | Orbital X-ray modulation study of three Supergiant HMXBs | We present the orbital X-ray modulation study of three high mass X- ray binary systems, IGR J18027-2016, IGR J18483-0311 and IGR J16318-4848 using data obtained with RXTE-ASM, Swift-BAT and INTEGRAL-ISGRI. Using the long term light curves of the eclipsing HMXB IGR J18027-2016, obtained with Swift-BAT in the energy rang... | [
"astro-ph.HE"
] | null | [
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] | null | null | null |
115170141 | 0908.4587 | 2009-08-31 | On the density of systems of non-linear spatially homogeneous SPDEs | In this paper, we consider a system of $k$ second order non-linear stochastic partial differential equations with spatial dimension $d \geq 1$, driven by a $q$-dimensional Gaussian noise, which is white in time and with some spatially homogeneous covariance. The case of a single equation and a one-dimensional noise, ha... | [
"math.PR"
] | null | [
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] | [
{
"corpus_id": "14129359",
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] | [
{
"author_id": "e nualart_1",
"name": "Eulalia Nualart",
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"num_citations": null
}
] | null |
15996680 | 0908.4294 | 2009-08-31 | Computing the Spectrum of a Heterotic Flux Vacuum | We compute the massless spectra of a set of flux vacua of the heterotic string. The vacua we study include well-known non-Kahler T^2-fibrations over K3 with SU(3) structure and intrinsic torsion. Following gauged linear sigma models of these vacua into phases governed by asymmetric Landau-Ginzburg orbifolds allows us t... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14287603 | 0908.4450 | 2009-08-31 | Convergence of Numerical Time-Averaging and Stationary Measures via Poisson Equations | Numerical approximation of the long time behavior of a stochastic differential equation (SDE) is considered. Error estimates for time-averaging estimators are obtained and then used to show that the stationary behavior of the numerical method converges to that of the SDE. The error analysis is based on using an associa... | [
"math.PR",
"math.NA"
] | null | [
"target.author.publication_history",
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] | [] | [
{
"author_id": "j mattingly_1",
"name": "Jonathan [\"C.\"] Mattingly",
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},
{
"author_id": "a stuart_2",
"name": "Andrew [\"M.\"] Stuart",
"publication_history": null,
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... | null |
35211957 | 0909.0033 | 2009-08-31 | Kernel Approximation on Manifolds I: Bounding the Lebesgue Constant | The purpose of this paper is to establish that for any compact, connected C^{\infty} Riemannian manifold there exists a robust family of kernels of increasing smoothness that are well suited for interpolation. They generate Lagrange functions that are uniformly bounded and decay away from their center at an exponential... | [
"math.CA",
"math.NA"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
16754205 | 0908.4467 | 2009-08-31 | Time averages, recurrence and transience in the stochastic replicator dynamics | We investigate the long-run behavior of a stochastic replicator process, which describes game dynamics for a symmetric two-player game under aggregate shocks. We establish an averaging principle that relates time averages of the process and Nash equilibria of a suitably modified game. Furthermore, a sufficient conditio... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17353704 | 0909.0093 | 2009-08-31 | Energy Efficient Location Aided Routing Protocol for Wireless MANETs | A Mobile Ad-Hoc Network (MANET) is a collection of wireless mobile nodes forming a temporary network without using any centralized access point, infrastructure, or centralized administration. In this paper we introduce an Energy Efficient Location Aided Routing (EELAR) Protocol for MANETs that is based on the Location ... | [
"cs.NI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
867802 | 0908.4465 | 2009-08-31 | Spatiotemporal heterodyne detection | We describe a scheme into which a camera is turned into an efficient tunable frequency filter of a few Hertz bandwidth in an off-axis, heterodyne optical mixing configuration, enabling to perform parallel, high-resolution coherent spectral imaging. This approach is made possible through the combination of a spatial and... | [
"physics.optics"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18068276 | 0909.0009 | 2009-08-31 | Improved simulation of non-Gaussian temperature and polarization CMB maps | We describe an algorithm to generate temperature and polarization maps of the cosmic microwave background radiation containing non-Gaussianity of arbitrary local type. We apply an optimized quadrature scheme that allows us to predict and control integration accuracy, speed up the calculations, and reduce memory consump... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "118910117",
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}
] | [
{
"author_id": "f elsner_1",
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},
{
"author_id": "b wandelt_1",
"name": "Benjamin [\"D.\"] Wandelt",
"publication_history": null,
"h_index": null,
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7901763 | 0908.4489 | 2009-08-31 | Bayesian orthogonal component analysis for sparse representation | This paper addresses the problem of identifying a lower dimensional space where observed data can be sparsely represented. This under-complete dictionary learning task can be formulated as a blind separation problem of sparse sources linearly mixed with an unknown orthogonal mixing matrix. This issue is formulated in a... | [
"stat.ME",
"stat.ML"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "11037495",
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}
] | [
{
"author_id": "n dobigeon_1",
"name": "Nicolas Dobigeon",
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},
{
"author_id": "j tourneret_1",
"name": "Jean-Yves Tourneret",
"publication_history": null,
"h_index": null,
"num_pape... | null |
6527635 | 0909.0083 | 2009-09-01 | Analysis of Orthogonal Matching Pursuit using the Restricted Isometry Property | Orthogonal Matching Pursuit (OMP) is the canonical greedy algorithm for sparse approximation. In this paper we demonstrate that the restricted isometry property (RIP) can be used for a very straightforward analysis of OMP. Our main conclusion is that the RIP of order $K+1$ (with isometry constant $\delta < \frac{1}{3\s... | [
"math.NA"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
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{
"author_id": "m davenport_1",
"name": "Mark [\"A.\"] Davenport",
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},
{
"author_id": "m wakin_1",
"name": "Michael [\"B.\"] Wakin",
"publication_history": null,
"h_index": null,
"n... | null |
9787261 | 0909.0184 | 2009-09-01 | Robust nearest-neighbor methods for classifying high-dimensional data | We suggest a robust nearest-neighbor approach to classifying high-dimensional data. The method enhances sensitivity by employing a threshold and truncates to a sequence of zeros and ones in order to reduce the deleterious impact of heavy-tailed data. Empirical rules are suggested for choosing the threshold. They requir... | [
"math.ST",
"stat.TH"
] | null | [
"target.key_reference"
] | null | null | null |
10133775 | 0909.0178 | 2009-09-01 | Rectangular R-transform as the limit of rectangular spherical integrals | In this paper, we connect rectangular free probability theory and spherical integrals. In this way, we prove the analogue, for rectangular or square non-Hermitian matrices, of a result that Guionnet and Maida proved for Hermitian matrices in 2005. More specifically, we study the limit, as $n,m$ tend to infinity, of the... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1272803 | 0909.0058 | 2009-09-01 | Explorations Beyond the Snow Line: Spitzer/IRS Spectra of Debris Disks Around Solar-Type Stars | We have observed 152 nearby solar-type stars with the Infrared Spectrometer (IRS) on the Spitzer Space Telescope. Including stars that met our criteria but were observed in other surveys, we get an overall success rate for finding excesses in the long wavelength IRS band (30-34 micron) of 11.8% +/- 2.4%. The success ra... | [
"astro-ph.SR",
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8018171 | 0909.0138 | 2009-09-01 | Reasoning about Cardinal Directions between Extended Objects | Direction relations between extended spatial objects are important commonsense knowledge. Recently, Goyal and Egenhofer proposed a formal model, known as Cardinal Direction Calculus (CDC), for representing direction relations between connected plane regions. CDC is perhaps the most expressive qualitative calculus for d... | [
"cs.AI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1840492 | 0909.0237 | 2009-09-01 | Is the crowd's wisdom biased? A quantitative asessment of three online communities | This paper presents a study of user voting on three websites: Imdb, Amazon and BookCrossings. It reports on an expert evaluation of the voting mechanisms of each website and a quantitative data analysis of users' aggregate voting behavior. The results suggest that voting follows different patterns across the websites, ... | [
"cs.HC"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v kostakos_1",
"name": "Vassilis Kostakos",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
14277379 | 0909.0119 | 2009-09-01 | Woodroofe's one-armed bandit problem revisited | We consider the one-armed bandit problem of Woodroofe [J. Amer. Statist. Assoc. 74 (1979) 799--806], which involves sequential sampling from two populations: one whose characteristics are known, and one which depends on an unknown parameter and incorporates a covariate. The goal is to maximize cumulative expected rewar... | [
"math.PR"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference",
"target.key_reference"
] | [] | [
{
"author_id": "a zeevi_1",
"name": "Assaf [\"J.\"] Zeevi",
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},
{
"author_id": "a goldenshluger_1",
"name": "Alexander Goldenshluger",
"publication_history": null,
"h_index": null,
... | null |
9247996 | 0909.0256 | 2009-09-01 | Adaptive versus non-adaptive strategies for quantum channel discrimination | We provide a simple example that illustrates the advantage of adaptive over non-adaptive strategies for quantum channel discrimination. In particular, we give a pair of entanglement-breaking channels that can be perfectly discriminated by means of an adaptive strategy that requires just two channel evaluations, but for... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "15095703",
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}
] | [
{
"author_id": "a harrow_1",
"name": "Aram [\"Wettroth\"] Harrow",
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{
"author_id": "a hassidim_1",
"name": "Avinatan Hassidim",
"publication_history": null,
"h_index": null,
"num... | null |
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