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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12229051 | 1106.1674 | 2011-06-08 | Moment based estimation of stochastic Kronecker graph parameters | Stochastic Kronecker graphs supply a parsimonious model for large sparse real world graphs. They can specify the distribution of a large random graph using only three or four parameters. Those parameters have however proved difficult to choose in specific applications. This article looks at method of moments estimators... | [
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173370 | 1106.1651 | 2011-06-08 | Sparse Principal Component of a Rank-deficient Matrix | We consider the problem of identifying the sparse principal component of a rank-deficient matrix. We introduce auxiliary spherical variables and prove that there exists a set of candidate index-sets (that is, sets of indices to the nonzero elements of the vector argument) whose size is polynomially bounded, in terms of... | [
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88512311 | 1106.1638 | 2011-06-08 | Combining Predictive Distributions | Predictive distributions need to be aggregated when probabilistic forecasts are merged, or when expert opinions expressed in terms of probability distributions are fused. We take a prediction space approach that applies to discrete, mixed discrete-continuous and continuous predictive distributions alike, and study comb... | [
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1199415 | 1106.1636 | 2011-06-08 | A Sequence of Relaxations Constraining Hidden Variable Models | Many widely studied graphical models with latent variables lead to nontrivial constraints on the distribution of the observed variables. Inspired by the Bell inequalities in quantum mechanics, we refer to any linear inequality whose violation rules out some latent variable model as a "hidden variable test" for that mod... | [
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10218794 | 1106.1622 | 2011-06-08 | Large-Scale Convex Minimization with a Low-Rank Constraint | We address the problem of minimizing a convex function over the space of large matrices with low rank. While this optimization problem is hard in general, we propose an efficient greedy algorithm and derive its formal approximation guarantees. Each iteration of the algorithm involves (approximately) finding the left an... | [
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9929889 | 1106.1595 | 2011-06-08 | Transmission with Energy Harvesting Nodes in Fading Wireless Channels: Optimal Policies | Wireless systems comprised of rechargeable nodes have a significantly prolonged lifetime and are sustainable. A distinct characteristic of these systems is the fact that the nodes can harvest energy throughout the duration in which communication takes place. As such, transmission policies of the nodes need to adapt to ... | [
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29576184 | 1106.1683 | 2011-06-08 | Quantum simulator of an open quantum system using superconducting qubits: exciton transport in photosynthetic complexes | Open quantum system approaches are widely used in the description of physical, chemical and biological systems. A famous example is electronic excitation transfer in the initial stage of photosynthesis, where harvested energy is transferred with remarkably high efficiency to a reaction center. This transport is affecte... | [
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119132863 | 1106.1596 | 2011-06-08 | The Kardar-Parisi-Zhang equation and universality class | Brownian motion is a continuum scaling limit for a wide class of random processes, and there has been great success in developing a theory for its properties (such as distribution functions or regularity) and expanding the breadth of its universality class. Over the past twenty five years a new universality class has e... | [
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529160 | 1106.1634 | 2011-06-08 | Repair Optimal Erasure Codes through Hadamard Designs | In distributed storage systems that employ erasure coding, the issue of minimizing the total {\it communication} required to exactly rebuild a storage node after a failure arises. This repair bandwidth depends on the structure of the storage code and the repair strategies used to restore the lost data. Designing high-r... | [
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13027594 | 1106.1523 | 2011-06-08 | A Novel Combined Term Suggestion Service for Domain-Specific Digital Libraries | Interactive query expansion can assist users during their query formulation process. We conducted a user study with over 4,000 unique visitors and four different design approaches for a search term suggestion service. As a basis for our evaluation we have implemented services which use three different vocabularies: (1)... | [
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9161858 | 1106.1652 | 2011-06-08 | Distributed Storage Codes through Hadamard Designs | In distributed storage systems that employ erasure coding, the issue of minimizing the total {\it repair bandwidth} required to exactly regenerate a storage node after a failure arises. This repair bandwidth depends on the structure of the storage code and the repair strategies used to restore the lost data. Minimizing... | [
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10452897 | 1106.1818 | 2011-06-09 | Inducing Interpretable Voting Classifiers without Trading Accuracy for Simplicity: Theoretical Results, Approximation Algorithms | Recent advances in the study of voting classification algorithms have brought empirical and theoretical results clearly showing the discrimination power of ensemble classifiers. It has been previously argued that the search of this classification power in the design of the algorithms has marginalized the need to obtain... | [
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1312658 | 1106.1820 | 2011-06-09 | Inferring Strategies for Sentence Ordering in Multidocument News Summarization | The problem of organizing information for multidocument summarization so that the generated summary is coherent has received relatively little attention. While sentence ordering for single document summarization can be determined from the ordering of sentences in the input article, this is not the case for multidocumen... | [
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119266731 | 1106.1914 | 2011-06-09 | A First Constraint on the Thick Disk Scale Length: Differential Radial Abundances in K Giants at Galactocentric Radii 4, 8, and 12 kpc | Based on high-resolution spectra obtained with the MIKE spectrograph on the Magellan telescopes we present detailed elemental abundances for 20 red giant stars in the outer Galactic disk, located at Galactocentric distances between 9 and 13 kpc. The outer disk sample is complemented with samples of red giants from the ... | [
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119293934 | 1106.1711 | 2011-06-09 | The application of compressive sampling to radio astronomy I: Deconvolution | Compressive sampling is a new paradigm for sampling, based on sparseness of signals or signal representations. It is much less restrictive than Nyquist-Shannon sampling theory and thus explains and systematises the widespread experience that methods such as the H\"ogbom CLEAN can violate the Nyquist-Shannon sampling re... | [
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6612705 | 1106.1816 | 2011-06-09 | Monitoring Teams by Overhearing: A Multi-Agent Plan-Recognition Approach | Recent years are seeing an increasing need for on-line monitoring of teams of cooperating agents, e.g., for visualization, or performance tracking. However, in monitoring deployed teams, we often cannot rely on the agents to always communicate their state to the monitoring system. This paper presents a non-intrusive ap... | [
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34197123 | 1106.1741 | 2011-06-09 | Role of the first coordination shell in determining the equilibrium structure and dynamics of simple liquids | The traditional view that the physical properties of a simple liquid are determined primarily by its repulsive forces was recently challenged by Berthier and Tarjus, who showed that in some cases ignoring the attractions leads to large errors in the dynamics [L. Berthier and G. Tarjus, Phys. Rev. Lett. 103, 170601 (200... | [
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1018549 | 1106.1770 | 2011-06-09 | Reinforcement learning based sensing policy optimization for energy efficient cognitive radio networks | This paper introduces a machine learning based collaborative multi-band spectrum sensing policy for cognitive radios. The proposed sensing policy guides secondary users to focus the search of unused radio spectrum to those frequencies that persistently provide them high data rate. The proposed policy is based on machin... | [
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"author_id": "j lundén_1",
"name": "Jarmo Lundén",
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... | null |
172139 | 1106.1900 | 2011-06-09 | A sparse octree gravitational N-body code that runs entirely on the GPU processor | We present parallel algorithms for constructing and traversing sparse octrees on graphics processing units (GPUs). The algorithms are based on parallel-scan and sort methods. To test the performance and feasibility, we implemented them in CUDA in the form of a gravitational tree-code which completely runs on the GPU.(T... | [
"astro-ph.IM",
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] | null | [
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] | null | null | null |
18293187 | 1106.1709 | 2011-06-09 | The application of compressive sampling to radio astronomy II: Faraday rotation measure synthesis | Faraday rotation measure (RM) synthesis is an important tool to study and analyze galactic and extra-galactic magnetic fields. Since there is a Fourier relation between the Faraday dispersion function and the polarized radio emission, full reconstruction of the dispersion function requires knowledge of the polarized ra... | [
"astro-ph.IM"
] | null | [
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] | null | null | null |
5672538 | 1106.1814 | 2011-06-09 | When do Numbers Really Matter? | Common wisdom has it that small distinctions in the probabilities (parameters) quantifying a belief network do not matter much for the results of probabilistic queries. Yet, one can develop realistic scenarios under which small variations in network parameters can lead to significant changes in computed queries. A pend... | [
"cs.AI"
] | null | [
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] | null | null | null |
7857569 | 1106.1797 | 2011-06-09 | Parameter Learning of Logic Programs for Symbolic-Statistical Modeling | We propose a logical/mathematical framework for statistical parameter learning of parameterized logic programs, i.e. definite clause programs containing probabilistic facts with a parameterized distribution. It extends the traditional least Herbrand model semantics in logic programming to distribution semantics, possib... | [
"cs.AI"
] | null | [
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] | null | null | null |
96426215 | 1106.1719 | 2011-06-09 | The Inert Doublet Model and its Phenomenology | The single Higgs doublet in the standard model (SM) may be the simplest way of introducing electroweak symmetry breaking, but SM extensions with more scalar doublets are not excluded. A special case of the two Higgs doublet models is the inert doublet model - a minimalistic version with interesting phenomenology. These... | [
"hep-ph",
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] | null | [
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2015927 | 1106.1925 | 2011-06-09 | Ranking via Sinkhorn Propagation | It is of increasing importance to develop learning methods for ranking. In contrast to many learning objectives, however, the ranking problem presents difficulties due to the fact that the space of permutations is not smooth. In this paper, we examine the class of rank-linear objective functions, which includes popular... | [
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"author_id": "r adams_1",
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8280579 | 1106.1899 | 2011-06-09 | Disk and Envelope Structure in Class 0 Protostars: II. High Resolution Millimeter Mapping of the Serpens Sample | We present high-resolution CARMA 230 GHz continuum imaging of nine deeply embedded protostars in the Serpens Molecular Cloud, including six of the nine known Class 0 protostars in Serpens. This work is part of a program to characterize disk and envelope properties for a complete sample of Class 0 protostars in nearby l... | [
"astro-ph.GA"
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9919794 | 1106.1819 | 2011-06-09 | A Knowledge Compilation Map | We propose a perspective on knowledge compilation which calls for analyzing different compilation approaches according to two key dimensions: the succinctness of the target compilation language, and the class of queries and transformations that the language supports in polytime. We then provide a knowledge compilation ... | [
"cs.AI"
] | null | [
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] | null | null | null |
5738305 | 1106.1856 | 2011-06-09 | Homotopy DG algebras induce homotopy BV algebras | Let TA denote the space underlying the tensor algebra of a vector space A. In this short note, we show that if A is a differential graded algebra, then TA is a differential Batalin-Vilkovisky algebra. Moreover, if A is an A-infinity algebra, then TA is a commutative BV-infinity algebra. | [
"math.QA"
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{
"author_id": "j terilla_1",
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"name": "Thomas Tradler",
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... | null |
2615036 | 1106.1940 | 2011-06-09 | The Degree Sequence of Random Apollonian Networks | We analyze the asymptotic behavior of the degree sequence of Random Apollonian Networks \cite{maximal}. For previous weaker results see \cite{comment,maximal}. | [
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1554582 | 1106.1813 | 2011-06-09 | SMOTE: Synthetic Minority Over-sampling Technique | An approach to the construction of classifiers from imbalanced datasets is described. A dataset is imbalanced if the classification categories are not approximately equally represented. Often real-world data sets are predominately composed of "normal" examples with only a small percentage of "abnormal" or "interesting"... | [
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{
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1008724 | 1106.1887 | 2011-06-09 | Learning the Dependence Graph of Time Series with Latent Factors | This paper considers the problem of learning, from samples, the dependency structure of a system of linear stochastic differential equations, when some of the variables are latent. In particular, we observe the time evolution of some variables, and never observe other variables; from this, we would like to find the dep... | [
"cs.LG"
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119196039 | 1106.2047 | 2011-06-10 | Planetary Core Formation with Collisional Fragmentation and Atmosphere to Form Gas Giant Planets | Massive planetary cores ($\sim 10$ Earth masses) trigger rapid gas accretion to form gas giant planets \rev{such as} Jupiter and Saturn. We investigate the core growth and the possibilities for cores to reach such a critical core mass. At the late stage, planetary cores grow through collisions with small planetesimals.... | [
"astro-ph.EP"
] | null | [
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] | null | null | null |
8469022 | 1106.2108 | 2011-06-10 | On fluctuations of eigenvalues of random permutation matrices | Smooth linear statistics of random permutation matrices, sampled under a general Ewens distribution, exhibit an interesting non-universality phenomenon. Though they have bounded variance, their fluctuations are asymptotically non-Gaussian but infinitely divisible. The fluctuations are asymptotically Gaussian for less s... | [
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{
"author_id": "g arous_1",
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"author_id": "k dang_3",
"name": "Kim Dang",
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... | null |
1629411 | 1106.2050 | 2011-06-10 | Multi-User Privacy: The Gray-Wyner System and Generalized Common Information | The problem of preserving privacy when a multivariate source is required to be revealed partially to multiple users is modeled as a Gray-Wyner source coding problem with K correlated sources at the encoder and K decoders in which the kth decoder, k = 1, 2, ...,K, losslessly reconstructs the kth source via a common link... | [
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14266544 | 1106.2055 | 2011-06-10 | Channels That Die | Given the possibility of communication systems failing catastrophically, we investigate limits to communicating over channels that fail at random times. These channels are finite-state semi-Markov channels. We show that communication with arbitrarily small probability of error is not possible. Making use of results in ... | [
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"author_id": "s mitter_1",
"name": "Sanjoy [\"K.\"] Mitter",
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2475168 | 1106.2068 | 2011-06-10 | Asymptotic optimality of the Westfall--Young permutation procedure for multiple testing under dependence | Test statistics are often strongly dependent in large-scale multiple testing applications. Most corrections for multiplicity are unduly conservative for correlated test statistics, resulting in a loss of power to detect true positives. We show that the Westfall--Young permutation method has asymptotically optimal power... | [
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255368 | 1106.1998 | 2011-06-10 | A Linear Time Natural Evolution Strategy for Non-Separable Functions | We present a novel Natural Evolution Strategy (NES) variant, the Rank-One NES (R1-NES), which uses a low rank approximation of the search distribution covariance matrix. The algorithm allows computation of the natural gradient with cost linear in the dimensionality of the parameter space, and excels in solving high-dim... | [
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"name": "Faustino [\"J.\"] Gomez",
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119150878 | 1106.1976 | 2011-06-10 | Stochastic Burgers PDEs with random coefficients and a generalization of the Cole-Hopf transformation | This paper studies forward and backward versions of random Burgers equation (RBE) with stochastic coefficients. Firstly, the celebrated Cole-Hopf transformation reduces the forward RBE to a forward random heat equation (RHE) that can be treated pathwise. Next we provide a connection between the backward Burgers equatio... | [
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7727724 | 1106.2052 | 2011-06-10 | Digital Shearlet Transforms | Over the past years, various representation systems which sparsely approximate functions governed by anisotropic features such as edges in images have been proposed. We exemplarily mention the systems of contourlets, curvelets, and shearlets. Alongside the theoretical development of these systems, algorithmic realizati... | [
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"name": "Wang-Q Lim",
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53530321 | 1106.2160 | 2011-06-10 | Discovery and Mass Measurements of a Cold, 10-Earth Mass Planet and Its Host Star | We present the discovery and mass measurement of the cold, low-mass planet MOA-2009-BLG-266Lb, made with the gravitational microlensing method. This planet has a mass of m_p = 10.4 +- 1.7 Earth masses and orbits a star of mass M_* = 0.56 +- 0.09 Solar masses at a semi-major axis of a = 3.2 (+1.9 -0.5) AU and an orbital... | [
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119569331 | 1106.2169 | 2011-06-10 | New Quantum Bounds for Inequalities involving Marginal Expectations | We review, correct, and develop an algorithm which determines arbitrary Quantum Bounds, based on the seminal work of Tsirelson [Lett. Math. Phys. 4, 93 (1980)]. The potential of this algorithm is demonstrated by deriving both new number-valued Quantum Bounds, as well as identifying a new class of function-valued Quantu... | [
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9111831 | 1106.2125 | 2011-06-10 | Bootstrapping data arrays of arbitrary order | In this paper we study a bootstrap strategy for estimating the variance of a mean taken over large multifactor crossed random effects data sets. We apply bootstrap reweighting independently to the levels of each factor, giving each observation the product of independently sampled factor weights. No exact bootstrap exis... | [
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1478691 | 1106.2057 | 2011-06-10 | Discriminatory Lossy Source Coding: Side Information Privacy | A lossy source coding problem is studied in which a source encoder communicates with two decoders, one with and one without correlated side information with an additional constraint on the privacy of the side information at the uninformed decoder. Two cases of this problem arise depending on the availability of the sid... | [
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8430534 | 1106.2126 | 2011-06-10 | MIS on the fly | Humans are very good at optimizing solutions for specific problems. Biological processes, on the other hand, have evolved to handle multiple constrained distributed environments and so they are robust and adaptable. Inspired by observations made in a biological system we have recently presented a simple new randomized ... | [
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2127130 | 1106.2025 | 2011-06-10 | Censored Truncated Sequential Spectrum Sensing for Cognitive Radio Networks | Reliable spectrum sensing is a key functionality of a cognitive radio network. Cooperative spectrum sensing improves the detection reliability of a cognitive radio system but also increases the system energy consumption which is a critical factor particularly for low-power wireless technologies. A censored truncated se... | [
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"name": "Geert Leus",
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3106067 | 1106.2173 | 2011-06-10 | Design and performance of the Spider instrument | Here we describe the design and performance of the Spider instrument. Spider is a balloon-borne cosmic microwave background polarization imager that will map part of the sky at 90, 145, and 280 GHz with sub-degree resolution and high sensitivity. This paper discusses the general design principles of the instrument inse... | [
"astro-ph.IM"
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16549665 | 1106.2134 | 2011-06-10 | Components in time-varying graphs | Real complex systems are inherently time-varying. Thanks to new communication systems and novel technologies, it is today possible to produce and analyze social and biological networks with detailed information on the time of occurrence and duration of each link. However, standard graph metrics introduced so far in com... | [
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4832314 | 1106.2208 | 2011-06-11 | Convergence Rate of the Causal Jacobi Derivative Estimator | Numerical causal derivative estimators from noisy data are essential for real time applications especially for control applications or fluid simulation so as to address the new paradigms in solid modeling and video compression. By using an analytical point of view due to Lanczos \cite{C. Lanczos} to this causal case, w... | [
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] | null | [
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] | null | null | null |
15091353 | 1106.2326 | 2011-06-12 | Exponential return to equilibrium for hypoelliptic quadratic systems | We study the problem of convergence to equilibrium for evolution equations associated to general quadratic operators. Quadratic operators are non-selfadjoint differential operators with complex-valued quadratic symbols. Under appropriate assumptions, a complete description of the spectrum of such operators is given and... | [
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16616944 | 1106.2269 | 2011-06-12 | Isotopic Composition of Light Nuclei in Cosmic Rays: Results from AMS-01 | The variety of isotopes in cosmic rays allows us to study different aspects of the processes that cosmic rays undergo between the time they are produced and the time of their arrival in the heliosphere. In this paper we present measurements of the isotopic ratios 2H/4He, 3He/4He, 6Li/7Li, 7Be/(9Be+10Be) and 10B/11B in ... | [
"astro-ph.HE",
"hep-ex"
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49383804 | 1106.2349 | 2011-06-12 | Dynamical density functional theory for colloidal particles with arbitrary shape | Starting from the many-particle Smoluchowski equation, we derive dynamical density functional theory for Brownian particles with an arbitrary shape. Both passive and active (self-propelled) particles are considered. The resulting theory constitutes a microscopic framework to explore the collective dynamical behavior of... | [
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383305 | 1106.2289 | 2011-06-12 | PRESY: A Context Based Query Reformulation Tool for Information Retrieval on the Web | Problem Statement: The huge number of information on the web as well as the growth of new inexperienced users creates new challenges for information retrieval. It has become increasingly difficult for these users to find relevant documents that satisfy their individual needs. Certainly the current search engines (such ... | [
"cs.IR"
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"name": "Mohamed-Khireddine Kholladi",
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... | null |
218741886 | 1106.2337 | 2011-06-12 | Channel covariance, twirling, contraction, and some upper bounds on the quantum capacity | Evaluating the quantum capacity of quantum channels is an important but difficult problem, even for channels of low input and output dimension. Smith and Smolin showed that the quantum capacity of the Clifford-twirl of a qubit amplitude damping channel (a qubit depolarizing channel) has a quantum capacity that is at mo... | [
"quant-ph"
] | null | [
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45200262 | 1106.2484 | 2011-06-13 | Generalized Superconformal Index for Three Dimensional Field Theories | We introduce a generalization of the S^2 x S^1 superconformal index where background gauge fields with magnetic flux are coupled to the global symmetries of the theory. This allows one to gauge a global symmetry at the level of the index, which we use to show the matching of the superconformal index for N=2 SQED with N... | [
"hep-th"
] | null | [
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] | null | null | null |
47094998 | 1106.2429 | 2011-06-13 | Efficient Transductive Online Learning via Randomized Rounding | Most traditional online learning algorithms are based on variants of mirror descent or follow-the-leader. In this paper, we present an online algorithm based on a completely different approach, tailored for transductive settings, which combines "random playout" and randomized rounding of loss subgradients. As an applic... | [
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"author_id": "o shamir_1",
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119719595 | 1106.2555 | 2011-06-13 | Transport equation with nonlocal velocity in Wasserstein spaces: convergence of numerical schemes | Motivated by pedestrian modelling, we study evolution of measures in the Wasserstein space. In particular, we consider the Cauchy problem for a transport equation, where the velocity field depends on the measure itself. We deal with numerical schemes for this problem and prove convergence of a Lagrangian scheme to the ... | [
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2185634 | 1106.2464 | 2011-06-13 | On the Sum Capacity of K-user Cascade Gaussian Z-Interference Channel | A $K$-user cascade Gaussian Z-interference channel is a subclass of the general $K$-user Gaussian interference channel, where each user, except the first one, experiences interference only from the previous user. Under simple Han-Kobayashi schemes assuming Gaussian inputs and no time sharing, it is shown that the maxim... | [
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867261 | 1106.2369 | 2011-06-13 | Efficient Optimal Learning for Contextual Bandits | We address the problem of learning in an online setting where the learner repeatedly observes features, selects among a set of actions, and receives reward for the action taken. We provide the first efficient algorithm with an optimal regret. Our algorithm uses a cost sensitive classification learner as an oracle and h... | [
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... | null |
159083 | 1106.2522 | 2011-06-13 | Degrees of Freedom Region of the Gaussian MIMO Broadcast Channel with Common and Private Messages | We consider the Gaussian multiple-input multiple-output (MIMO) broadcast channel with common and private messages. We obtain the degrees of freedom (DoF) region of this channel. We first show that a parallel Gaussian broadcast channel with unmatched sub-channels can be constructed from any given Gaussian MIMO broadcast... | [
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119258154 | 1106.2476 | 2011-06-13 | Modified Gravity and Cosmology | In this review we present a thoroughly comprehensive survey of recent work on modified theories of gravity and their cosmological consequences. Amongst other things, we cover General Relativity, Scalar-Tensor, Einstein-Aether, and Bimetric theories, as well as TeVeS, f(R), general higher-order theories, Horava-Lifschit... | [
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271801136 | 1106.2363 | 2011-06-13 | Random design analysis of ridge regression | This work gives a simultaneous analysis of both the ordinary least squares estimator and the ridge regression estimator in the random design setting under mild assumptions on the covariate/response distributions. In particular, the analysis provides sharp results on the ``out-of-sample'' prediction error, as opposed to... | [
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"name": "Sham [\"M.\"] Kakade",
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15857368 | 1106.2489 | 2011-06-13 | Eliciting Forecasts from Self-interested Experts: Scoring Rules for Decision Makers | Scoring rules for eliciting expert predictions of random variables are usually developed assuming that experts derive utility only from the quality of their predictions (e.g., score awarded by the rule, or payoff in a prediction market). We study a more realistic setting in which (a) the principal is a decision maker a... | [
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4507432 | 1106.2525 | 2011-06-13 | Uniform Stability of a Particle Approximation of the Optimal Filter Derivative | Sequential Monte Carlo methods, also known as particle methods, are a widely used set of computational tools for inference in non-linear non-Gaussian state-space models. In many applications it may be necessary to compute the sensitivity, or derivative, of the optimal filter with respect to the static parameters of the... | [
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456598 | 1106.2436 | 2011-06-13 | From Bandits to Experts: On the Value of Side-Observations | We consider an adversarial online learning setting where a decision maker can choose an action in every stage of the game. In addition to observing the reward of the chosen action, the decision maker gets side observations on the reward he would have obtained had he chosen some of the other actions. The observation str... | [
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1124588 | 1106.2414 | 2011-06-13 | Some remarks on cops and drunk robbers | The cops and robbers game has been extensively studied under the assumption of optimal play by both the cops and the robbers. In this paper we study the problem in which cops are chasing a drunk robber (that is, a robber who performs a random walk) on a graph. Our main goal is to characterize the "cost of drunkenness."... | [
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"name": "Paweł Prałat",
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9806927 | 1106.2384 | 2011-06-13 | Certifying Convergence of Lasserre's Hierarchy via Flat Truncation | This paper studies how to certify the convergence of Lasserre's hierarchy of semidefinite programming relaxations for solving multivariate polynomial optimization. We propose flat truncation as a general certificate for this purpose. Assume the set of global minimizers is nonempty and finite. Our main results are: i) P... | [
"math.OC"
] | null | [
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] | null | null | null |
1470567 | 1106.2503 | 2011-06-13 | A Large-Scale Community Structure Analysis In Facebook | Understanding social dynamics that govern human phenomena, such as communications and social relationships is a major problem in current computational social sciences. In particular, given the unprecedented success of online social networks (OSNs), in this paper we are concerned with the analysis of aggregation pattern... | [
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119256844 | 1106.2452 | 2011-06-13 | Effective interactions of axion supermultiplet and thermal production of axino dark matter | We discuss the effective interactions of axion supermultiplet, which might be important for analyzing the cosmological aspect of supersymmetric axion model. Related to axino cosmology, it is stressed that three seemingly similar but basically different quantities, the Wilsonian axino-gluino-gluon coupling, the 1PI axin... | [
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] | null | null | null |
119326323 | 1106.2505 | 2011-06-13 | Instantons on ALE spaces and Super Liouville Conformal Field Theories | We provide evidence that the conformal blocks of N=1 super Liouville conformal field theory are described in terms of the SU(2) Nekrasov partition function on the ALE space O_{P^1}(-2). | [
"hep-th",
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9105218 | 1106.2673 | 2011-06-14 | No justified complaints: On fair sharing of multiple resources | Fair allocation has been studied intensively in both economics and computer science, and fair sharing of resources has aroused renewed interest with the advent of virtualization and cloud computing. Prior work has typically focused on mechanisms for fair sharing of a single resource. We provide a new definition for the... | [
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{
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"name": "Dror [\"G.\"] Feitelson",
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1639325 | 1106.2729 | 2011-06-14 | Nested Graph Words for Object Recognition | In this paper, we propose a new, scalable approach for the task of object based image search or object recognition. Despite the very large literature existing on the scalability issues in CBIR in the sense of retrieval approaches, the scalability of media and scalability of features remain an issue. In our work we tack... | [
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2337554 | 1106.2774 | 2011-06-14 | Orthogonal Matching Pursuit with Replacement | In this paper, we consider the problem of compressed sensing where the goal is to recover almost all the sparse vectors using a small number of fixed linear measurements. For this problem, we propose a novel partial hard-thresholding operator that leads to a general family of iterative algorithms. While one extreme of ... | [
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12188630 | 1106.2775 | 2011-06-14 | Covariance estimation for distributions with $2+\varepsilon$ moments | We study the minimal sample size N=N(n) that suffices to estimate the covariance matrix of an n-dimensional distribution by the sample covariance matrix in the operator norm, with an arbitrary fixed accuracy. We establish the optimal bound N=O(n) for every distribution whose k-dimensional marginals have uniformly bound... | [
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15399826 | 1106.2581 | 2011-06-14 | Distributed Storage Allocations for Optimal Delay | We examine the problem of creating an encoded distributed storage representation of a data object for a network of mobile storage nodes so as to achieve the optimal recovery delay. A source node creates a single data object and disseminates an encoded representation of it to other nodes for storage, subject to a given ... | [
"cs.IT",
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] | null | [
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{
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{
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},
{
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"name": "Alexandros [\"G.\"] Dimakis",
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"num_papers... | null |
265101785 | 1106.2696 | 2011-06-14 | Who clicks there!: Anonymizing the photographer in a camera saturated society | In recent years, social media has played an increasingly important role in reporting world events. The publication of crowd-sourced photographs and videos in near real-time is one of the reasons behind the high impact. However, the use of a camera can draw the photographer into a situation of conflict. Examples include... | [
"cs.CR",
"cs.CV"
] | null | [
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{
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{
"author_id": "d aouada_1",
"name": "Djamila Aouada",
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"num_papers": null,... | null |
16654679 | 1106.2822 | 2011-06-14 | Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam | The T2K experiment observes indications of $\nu_\mu\rightarrow \nu_e$ appearance in data accumulated with $1.43\times10^{20}$ protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with $|\Delta m_{23}^2|=2.4\times10^{-3}$ eV$^2$, $\sin^2 2\theta_{... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "k abe_5",
"name": "K. Abe",
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},
{
"author_id": "n abgrall_1",
"name": "Nicolas Abgrall",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_c... | null |
16074636 | 1106.2697 | 2011-06-14 | A Tutorial on Bayesian Nonparametric Models | A key problem in statistical modeling is model selection, how to choose a model at an appropriate level of complexity. This problem appears in many settings, most prominently in choosing the number ofclusters in mixture models or the number of factors in factor analysis. In this tutorial we describe Bayesian nonparamet... | [
"stat.ML",
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] | null | [
"target.author.publication_history",
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] | [
{
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] | [
{
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"name": "Samuel [\"J.\"] Gershman",
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},
{
"author_id": "d blei_1",
"name": "David [\"M.\"] Blei",
"publication_history": null,
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"num_p... | null |
119235468 | 1106.2719 | 2011-06-14 | The Discrete Composite Higgs Model | We describe a concrete, predictive incarnation of the general paradigm of a composite Higgs boson, which provides a valid alternative to the standard holographic models in five space-time dimensions. Differently from the latter, our model is four-dimensional and simple enough to be implemented in an event generator for... | [
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17118460 | 1106.2650 | 2011-06-14 | On the Nash Equilibria in Decentralized Parallel Interference Channels | In this paper, the 2-dimensional decentralized parallel interference channel (IC) with 2 transmitter-receiver pairs is modelled as a non-cooperative static game. Each transmitter is assumed to be a fully rational entity with complete information on the game, aiming to maximize its own individual spectral efficiency by ... | [
"cs.GT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "l rose_1",
"name": "Luca Rose",
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},
{
"author_id": "s perlaza_1",
"name": "Samir [\"Medina\"] Perlaza",
"publication_history": null,
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"num_papers": n... | null |
11814653 | 1106.2662 | 2011-06-14 | Learning Equilibria with Partial Information in Decentralized Wireless Networks | In this article, a survey of several important equilibrium concepts for decentralized networks is presented. The term decentralized is used here to refer to scenarios where decisions (e.g., choosing a power allocation policy) are taken autonomously by devices interacting with each other (e.g., through mutual interferen... | [
"cs.LG",
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"cs.GT",
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] | null | [
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{
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"name": "Samson Lasaulce",
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"... | null |
16297428 | 1106.2844 | 2011-06-14 | Unleashing the power of Schrijver's permanental inequality with the help of the Bethe Approximation | Let $A \in \Omega_n$ be doubly-stochastic $n \times n$ matrix. Alexander Schrijver proved in 1998 the following remarkable inequality per(\widetilde{A}) \geq \prod_{1 \leq i,j \leq n} (1- A(i,j)); \widetilde{A}(i,j) =: A(i,j)(1-A(i,j)), 1 \leq i,j \leq n. We use the above Shrijver's inequality to prove the following lo... | [
"math.CO",
"cs.CC",
"cs.IT",
"math-ph",
"math.IT",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12770224 | 1106.2788 | 2011-06-14 | Co-evolution of Selection and Influence in Social Networks | Many networks are complex dynamical systems, where both attributes of nodes and topology of the network (link structure) can change with time. We propose a model of co-evolving networks where both node at- tributes and network structure evolve under mutual influence. Specifically, we consider a mixed membership stochas... | [
"cs.SI",
"physics.soc-ph",
"stat.ML"
] | null | [
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] | [
{
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] | [
{
"author_id": "y cho_33",
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},
{
"author_id": "g steeg_1",
"name": "Greg [\"Ver\"] Steeg",
"publication_history": null,
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"num_papers": null,
... | null |
16679366 | 1106.2793 | 2011-06-14 | abc: an R package for Approximate Bayesian Computation (ABC) | Many recent statistical applications involve inference under complex models, where it is computationally prohibitive to calculate likelihoods but possible to simulate data. Approximate Bayesian Computation (ABC) is devoted to these complex models because it bypasses evaluations of the likelihood function using comparis... | [
"q-bio.PE",
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"stat.AP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118672945 | 1106.2713 | 2011-06-14 | Photometric detection of non-transiting short-period low-mass companions through the beaming, ellipsoidal and reflection effects in Kepler and CoRoT lightcurves | We present a simple algorithm, BEER, to search for a combination of the BEaming, Ellipsoidal and the Reflection/heating periodic modulations, induced by short-period non-transiting low-mass companions. The beaming effect is due to the increase (decrease) of the brightness of any light source approaching (receding from)... | [
"astro-ph.EP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5691595 | 1106.2950 | 2011-06-15 | Routh Reduction by Stages | This paper deals with the Lagrangian analogue of symplectic or point reduction by stages. We develop Routh reduction as a reduction technique that preserves the Lagrangian nature of the dynamics. To do so we heavily rely on the relation between Routh reduction and cotangent symplectic reduction. The main results in thi... | [
"math-ph",
"math.DS",
"math.MP"
] | null | [
"target.author.publication_history"
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{
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{
"corpus_id": "119601298",
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{
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{
"author_id": "t mestdag_0",
"name": "Tom Mestdag",
"publication_history": null,
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"num_papers": null,
... | null |
119280421 | 1106.2898 | 2011-06-15 | The temperature of hot gas halos of early-type galaxies | Recently, the temperature T and luminosity L_X of the hot gas halos of early type galaxies have been derived with unprecedented accuracy from Chandra data, for 30 galaxies covering a wider range of galactic luminosity (and central velocity dispersion sigma_c) than before. This work investigates the origin of the observ... | [
"astro-ph.HE",
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6261800 | 1106.2851 | 2011-06-15 | Mass of the H-dibaryon | Recent lattice QCD calculations have reported evidence for the existence of a bound state with strangeness -2 and baryon number 2 at quark masses somewhat higher than the physical values. By developing a description of the dependence of this binding energy on the up, down and strange quark masses that allows a controll... | [
"nucl-th",
"hep-ex",
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p shanahan_2",
"name": "Phiala [\"E.\"] Shanahan",
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},
{
"author_id": "a thomas_1",
"name": "Anthony [\"W.\"] Thomas",
"publication_history": null,
"h_index": null,
... | null |
32003629 | 1106.2978 | 2011-06-15 | Exact nonequilibrium steady state of a strongly driven open XXZ chain | An exact and explicit ladder-tensor-network ansatz is presented for the non-equilibrium steady state of an anisotropic Heisenberg XXZ spin-1/2 chain which is driven far from equilibrium with a pair of Lindblad operators acting on the edges of the chain only. We show that the steady-state density operator of a finite sy... | [
"quant-ph",
"cond-mat.stat-mech",
"cond-mat.str-el",
"nlin.SI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119267621 | 1106.2948 | 2011-06-15 | Strategies to link tiny neutrino masses with huge missing mass of the Universe | With the start of the LHC, interest in electroweak scale models for the neutrino mass has grown. In this letter, we review two specific models that simultaneously explain neutrino masses and provide a suitable DM candidate. We discuss the implications of these models for various observations and experiments including t... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3101865 | 1106.3077 | 2011-06-15 | Chameleons in imagined conversations: A new approach to understanding coordination of linguistic style in dialogs | Conversational participants tend to immediately and unconsciously adapt to each other's language styles: a speaker will even adjust the number of articles and other function words in their next utterance in response to the number in their partner's immediately preceding utterance. This striking level of coordination is... | [
"cs.CL",
"physics.soc-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118306110 | 1106.3048 | 2011-06-15 | Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory | The Pierre Auger Collaboration has reported evidence for anisotropy in the distribution of arrival directions of the cosmic rays with energies $E>E_{th}=5.5\times 10^{19}$ eV. These show a correlation with the distribution of nearby extragalactic objects, including an apparent excess around the direction of Centaurus A... | [
"astro-ph.HE"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "56362511",
"num_citations": null
},
{
"corpus_id": "118461776",
"num_citations": null
}
] | [
{
"author_id": "t abreu_1",
"name": "The [\"Pierre\",\"Auger\",\"collaboration\",\"P.\"] Abreu",
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},
{
"author_id": "m aglietta_2",
"name": "Marco Aglietta",
"publication_history": null,
... | null |
21009327 | 1106.3084 | 2011-06-15 | Black Holes as Incompressible Fluids on the Sphere | We consider finite deformations of the p+2-dimensional Schwarzschild geometry which obey the vacuum Einstein equation, preserve the mean curvature and induced conformal metric on a sphere a distance $\lambda$ from the horizon and are regular on the future horizon. We show perturbatively that in the limit $\lambda$ appr... | [
"hep-th",
"gr-qc",
"physics.flu-dyn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
28101827 | 1106.2897 | 2011-06-15 | The Progenitor of Supernova 2011dh/PTF11eon in Messier 51 | We have identified a luminous star at the position of supernova (SN) 2011dh/PTF11eon, in pre-SN archival, multi-band images of the nearby, nearly face-on galaxy Messier 51 (M51) obtained by the Hubble Space Telescope with the Advanced Camera for Surveys. This identification has been confirmed, to the highest available ... | [
"astro-ph.CO",
"astro-ph.SR"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "16791052",
"num_citations": null
},
{
"corpus_id": "17990924",
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},
{
"corpus_id": "17628238",
"num_citations": null
},
{
"corpus_id": "16622579",
"num_citations": null
}
] | [
{
"author_id": "s van dyk_1",
"name": "Schuyler [\"D.\"] van Dyk",
"publication_history": null,
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},
{
"author_id": "w li_209",
"name": "Weidong Li",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
8490478 | 1106.3089 | 2011-06-15 | A smooth entropy approach to quantum hypothesis testing and the classical capacity of quantum channels | We use the smooth entropy approach to treat the problems of binary quantum hypothesis testing and the transmission of classical information through a quantum channel. We provide lower and upper bounds on the optimal type II error of quantum hypothesis testing in terms of the smooth max-relative entropy of the two state... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118906790 | 1106.2952 | 2011-06-15 | A Large Systematic Search for Recoiling and Close Supermassive Binary Black Holes | [ABRIDGED] We have carried out a systematic search for close supermassive black hole binaries among z < 0.7 SDSS quasars Such binaries are predicted by models of supermassive black hole and host galaxy co-evolution, therefore their census and population properties constitute an important test of these models. We used a... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119201371 | 1106.3087 | 2011-06-15 | SPIDER: Probing the Early Universe with a Suborbital Polarimeter | We evaluate the ability of SPIDER, a balloon-borne polarimeter, to detect a divergence-free polarization pattern ("B-modes") in the Cosmic Microwave Background (CMB). In the inflationary scenario, the amplitude of this signal is proportional to that of the primordial scalar perturbations through the tensor-to-scalar ra... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
62621269 | 1106.2881 | 2011-06-15 | A Random Walk with Drift: Interview with Peter J. Bickel | I met Peter J. Bickel for the first time in 1981. He came to Jerusalem for a year; I had just started working on my Ph.D. studies. Yossi Yahav, who was my advisor at this time, busy as the Dean of Social Sciences, brought us together. Peter became my chief thesis advisor. A year and a half later I came to Berkeley as a... | [
"stat.ME"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "y ritov_1",
"name": "Ya'acov Ritov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
119305386 | 1106.2894 | 2011-06-15 | Influence of synaptic depression on memory storage capacity | Synaptic efficacy between neurons is known to change within a short time scale dynamically. Neurophysiological experiments show that high-frequency presynaptic inputs decrease synaptic efficacy between neurons. This phenomenon is called synaptic depression, a short term synaptic plasticity. Many researchers have invest... | [
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "y otsubo_1",
"name": "Yosuke Otsubo",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "k nagata_3",
"name": "Kenji Nagata",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
12145280 | 1106.3076 | 2011-06-15 | Quark and Gluon Tagging at the LHC | Being able to distinguish light-quark jets from gluon jets on an event-by-event basis could significantly enhance the reach for many new physics searches at the Large Hadron Collider. Through an exhaustive search of existing and novel jet substructure observables, we find that a multivariate approach can filter out ove... | [
"hep-ph",
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14700420 | 1106.3286 | 2011-06-16 | ReProCS: A Missing Link between Recursive Robust PCA and Recursive Sparse Recovery in Large but Correlated Noise | This work studies the recursive robust principal components' analysis (PCA) problem. Here, "robust" refers to robustness to both independent and correlated sparse outliers, although we focus on the latter. A key application where this problem occurs is in video surveillance where the goal is to separate a slowly changi... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "7128002",
"num_citations": null
},
{
"corpus_id": "4590558",
"num_citations": null
}
] | [
{
"author_id": "c qiu_5",
"name": "Chenlu Qiu",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "n vaswani_1",
"name": "Namrata Vaswani",
"publication_history": null,
"h_index": null,
"num_papers": null,
"n... | null |
55926132 | 1106.3366 | 2011-06-16 | The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant | We analyse the large-scale correlation function of the 6dF Galaxy Survey (6dFGS) and detect a Baryon Acoustic Oscillation (BAO) signal. The 6dFGS BAO detection allows us to constrain the distance-redshift relation at z_{\rm eff} = 0.106. We achieve a distance measure of D_V(z_{\rm eff}) = 456\pm27 Mpc and a measurement... | [
"astro-ph.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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