id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1010.2789 | Optimum Power and Rate Allocation for Coded V-BLAST: Average
Optimization | [
"cs.IT",
"math.IT"
] | An analytical framework for performance analysis and optimization of coded V-BLAST is developed. Average power and/or rate allocations to minimize the outage probability as well as their robustness and dual problems are investigated. Compact, closed-form expressions for the optimum allocations and corresponding system ... | {
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1010.2830 | A Generalized Construction of OFDM M-QAM Sequences With Low
Peak-to-Average Power Ratio | [
"cs.IT",
"math.IT"
] | A construction of $2^{2n}$-QAM sequences is given and an upper bound of the peak-to-mean envelope power ratio (PMEPR) is determined. Some former works can be viewed as special cases of this construction. | {
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1010.2831 | On the Construction of Finite Oscillator Dictionary | [
"cs.IT",
"math.IT"
] | A finite oscillator dictionary which has important applications in sequences designs and the compressive sensing was introduced by Gurevich, Hadani and Sochen. In this paper, we first revisit closed formulae of the finite split oscillator dictionary $\mathfrak{S}^s$ by a simple proof. Then we study the non-split tori o... | {
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1010.2943 | The roundtable: an abstract model of conversation dynamics | [
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"cs.SI"
] | Is it possible to abstract a formal mechanism originating schisms and governing the size evolution of social conversations? In this work a constructive solution to such problem is proposed: an abstract model of a generic N-party turn-taking conversation. The model develops from simple yet realistic assumptions derived ... | {
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1010.2955 | Robust Recovery of Subspace Structures by Low-Rank Representation | [
"cs.IT",
"cs.CV",
"cs.LG",
"math.IT"
] | In this work we address the subspace recovery problem. Given a set of data samples (vectors) approximately drawn from a union of multiple subspaces, our goal is to segment the samples into their respective subspaces and correct the possible errors as well. To this end, we propose a novel method termed Low-Rank Represen... | {
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1010.2992 | On Powers of Gaussian White Noise | [
"cs.IT",
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"math.PR"
] | Classical Gaussian white noise in communications and signal processing is viewed as the limit of zero mean second order Gaussian processes with a compactly supported flat spectral density as the support goes to infinity. The difficulty of developing a theory to deal with nonlinear transformations of white noise has bee... | {
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1010.2993 | Broadcasting with an Energy Harvesting Rechargeable Transmitter | [
"cs.IT",
"cs.NI",
"math.IT"
] | In this paper, we investigate the transmission completion time minimization problem in a two-user additive white Gaussian noise (AWGN) broadcast channel, where the transmitter is able to harvest energy from the nature, using a rechargeable battery. The harvested energy is modeled to arrive at the transmitter randomly d... | {
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1010.3003 | Twitter mood predicts the stock market | [
"cs.CE",
"cs.CL",
"cs.SI",
"physics.soc-ph"
] | Behavioral economics tells us that emotions can profoundly affect individual behavior and decision-making. Does this also apply to societies at large, i.e., can societies experience mood states that affect their collective decision making? By extension is the public mood correlated or even predictive of economic indica... | {
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1010.3033 | Adaptive Bit Partitioning for Multicell Intercell Interference Nulling
with Delayed Limited Feedback | [
"cs.IT",
"math.IT"
] | Base station cooperation can exploit knowledge of the users' channel state information (CSI) at the transmitters to manage co-channel interference. Users have to feedback CSI of the desired and interfering channels using finite-bandwidth backhaul links. Existing codebook designs for single-cell limited feedback can be ... | {
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1010.3071 | On the Rate Achievable for Gaussian Relay Channels Using Superposition
Forwarding | [
"cs.IT",
"math.IT"
] | We analyze the achievable rate of the superposition of block Markov encoding (decode-and-forward) and side information encoding (compress-and-forward) for the three-node Gaussian relay channel. It is generally believed that the superposition can out perform decode-and-forward or compress-and-forward due to its generali... | {
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1010.3091 | Near-Optimal Bayesian Active Learning with Noisy Observations | [
"cs.LG",
"cs.AI",
"cs.DS"
] | We tackle the fundamental problem of Bayesian active learning with noise, where we need to adaptively select from a number of expensive tests in order to identify an unknown hypothesis sampled from a known prior distribution. In the case of noise-free observations, a greedy algorithm called generalized binary search (G... | {
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1010.3096 | Assortative Mixing in Close-Packed Spatial Networks | [
"cond-mat.dis-nn",
"cs.SI",
"physics.soc-ph"
] | A general relation for the dependence of nearest neighbor degree correlations on degree is derived. Dependence of local clustering on degree is shown to be the sole determining factor of assortative versus disassortative mixing in networks. The characteristics of networks derived from spatial atomic/molecular systems e... | {
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1010.3125 | A Quasi-separation Principle and Newton-like Scheme for Coherent Quantum
LQG Control | [
"quant-ph",
"cs.SY",
"math.DS",
"math.OC"
] | This paper is concerned with constructing an optimal controller in the coherent quantum Linear Quadratic Gaussian problem. A coherent quantum controller is itself a quantum system and is required to be physically realizable. The use of coherent control avoids the need for classical measurements, which inherently entail... | {
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1010.3132 | Sub-Nyquist Sampling of Short Pulses | [
"cs.IT",
"math.IT"
] | We develop sub-Nyquist sampling systems for analog signals comprised of several, possibly overlapping, finite duration pulses with unknown shapes and time positions. Efficient sampling schemes when either the pulse shape or the locations of the pulses are known have been previously developed. To the best of our knowled... | {
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1010.3150 | Application of DAC Codeword Spectrum: Expansion Factor | [
"cs.IT",
"math.IT"
] | Distributed Arithmetic Coding (DAC) proves to be an effective implementation of Slepian-Wolf Coding (SWC), especially for short data blocks. To study the property of DAC codewords, the author has proposed the concept of DAC codeword spectrum. For equiprobable binary sources, the problem was formatted as solving a syste... | {
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1010.3171 | Using explosive percolation in analysis of real-world networks | [
"cond-mat.dis-nn",
"cond-mat.stat-mech",
"cs.SI",
"physics.soc-ph"
] | We apply a variant of the explosive percolation procedure to large real-world networks, and show with finite-size scaling that the university class, ordinary or explosive, of the resulting percolation transition depends on the structural properties of the network as well as the number of unoccupied links considered for... | {
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1010.3172 | CRT: A numerical tool for propagating ultra-high energy cosmic rays
through Galactic magnetic field models | [
"astro-ph.IM",
"astro-ph.CO",
"astro-ph.GA",
"astro-ph.HE",
"cs.CE",
"physics.comp-ph"
] | Deflection of ultra high energy cosmic rays (UHECRs) by the Galactic magnetic field (GMF) may be sufficiently strong to hinder identification of the UHECR source distribution. A common method for determining the effect of GMF models on source identification efforts is backtracking cosmic rays. We present the public num... | {
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1010.3177 | Introduction to the iDian | [
"cs.AI"
] | The iDian (previously named as the Operation Agent System) is a framework designed to enable computer users to operate software in natural language. Distinct from current speech-recognition systems, our solution supports format-free combinations of orders, and is open to both developers and customers. We used a multi-l... | {
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1010.3190 | Phase transitions and non-equilibrium relaxation in kinetic models of
opinion formation | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI",
"physics.comp-ph"
] | We review in details some recently proposed kinetic models of opinion dynamics. We discuss the several variants including a generalised model. We provide mean field estimates for the critical points, which are numerically supported with reasonable accuracy. Using non-equilibrium relaxation techniques, we also investiga... | {
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1010.3201 | Kolmogorov Complexity in perspective. Part I: Information Theory and
Randomnes | [
"cs.LO",
"cs.CC",
"cs.IT",
"math.IT"
] | We survey diverse approaches to the notion of information: from Shannon entropy to Kolmogorov complexity. Two of the main applications of Kolmogorov complexity are presented: randomness and classification. The survey is divided in two parts in the same volume. Part I is dedicated to information theory and the mathemati... | {
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1010.3294 | ARQ Security in Wi-Fi and RFID Networks | [
"cs.CR",
"cs.IT",
"math.IT"
] | In this paper, we present two practical ARQ-Based security schemes for Wi-Fi and RFID networks. Our proposed schemes enhance the confidentiality and authenticity functions of these networks, respectively. Both schemes build on the same idea; by exploiting the statistical independence between the multipath fading experi... | {
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1010.3312 | List Decodability at Small Radii | [
"cs.IT",
"cs.DM",
"math.CO",
"math.IT"
] | $A'(n,d,e)$, the smallest $\ell$ for which every binary error-correcting code of length $n$ and minimum distance $d$ is decodable with a list of size $\ell$ up to radius $e$, is determined for all $d\geq 2e-3$. As a result, $A'(n,d,e)$ is determined for all $e\leq 4$, except for 42 values of $n$. | {
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1010.3319 | Hadamard Upper Bound (HUB) on Optimum Joint Decoding Capacity of Wyner
Gaussian Cellular MAC | [
"cs.IT",
"math.IT"
] | This paper has been withdrawn by the authors. | {
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1010.3325 | Wireless Sensor Network based Future of Telecom Applications | [
"cs.HC",
"cs.NE"
] | A system and method for enabling human beings to communicate by way of their monitored brain activity. The brain activity of an individual is monitored and transmitted to a remote location (e.g. by satellite). At the remote location, the monitored brain activity is compared with pre-recorded normalized brain activity c... | {
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1010.3337 | How to use our talents based on Information Theory - or spending time
wisely | [
"cs.IT",
"math.IT",
"math.OC",
"physics.soc-ph",
"stat.AP"
] | We discuss the allocation of finite resources in the presence of a logarithmic diminishing return law, in analogy to some results from Information Theory. To exemplify the problem we assume that the proposed logarithmic law is applied to the problem of how to spend our time. | {
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1010.3348 | The generalized Marcum $Q-$function: an orthogonal polynomial approach | [
"math.CA",
"cs.IT",
"math.IT"
] | A novel power series representation of the generalized Marcum $Q-$function of positive order involving generalized Laguerre polynomials is presented. The absolute convergence of the proposed power series expansion is showed, together with a convergence speed analysis by means of truncation error. A brief review of rela... | {
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1010.3425 | Identifying the consequences of dynamic treatment strategies: A
decision-theoretic overview | [
"math.ST",
"cs.AI",
"stat.TH"
] | We consider the problem of learning about and comparing the consequences of dynamic treatment strategies on the basis of observational data. We formulate this within a probabilistic decision-theoretic framework. Our approach is compared with related work by Robins and others: in particular, we show how Robins's 'G-comp... | {
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1010.3460 | Hybrid Linear Modeling via Local Best-fit Flats | [
"cs.CV",
"stat.ML"
] | We present a simple and fast geometric method for modeling data by a union of affine subspaces. The method begins by forming a collection of local best-fit affine subspaces, i.e., subspaces approximating the data in local neighborhoods. The correct sizes of the local neighborhoods are determined automatically by the Jo... | {
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1010.3467 | Fast Inference in Sparse Coding Algorithms with Applications to Object
Recognition | [
"cs.CV",
"cs.LG"
] | Adaptive sparse coding methods learn a possibly overcomplete set of basis functions, such that natural image patches can be reconstructed by linearly combining a small subset of these bases. The applicability of these methods to visual object recognition tasks has been limited because of the prohibitive cost of the opt... | {
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1010.3469 | Decoding the `Nature Encoded' Messages for Distributed Energy Generation
Control in Microgrid | [
"cs.IT",
"math.IT"
] | The communication for the control of distributed energy generation (DEG) in microgrid is discussed. Due to the requirement of realtime transmission, weak or no explicit channel coding is used for the message of system state. To protect the reliability of the uncoded or weakly encoded messages, the system dynamics are c... | {
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1010.3484 | Hardness Results for Agnostically Learning Low-Degree Polynomial
Threshold Functions | [
"cs.LG"
] | Hardness results for maximum agreement problems have close connections to hardness results for proper learning in computational learning theory. In this paper we prove two hardness results for the problem of finding a low degree polynomial threshold function (PTF) which has the maximum possible agreement with a given s... | {
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1010.3488 | Diffusion of a fluid through a viscoelastic solid | [
"cs.CE",
"math-ph",
"math.MP",
"physics.flu-dyn"
] | This paper is concerned with the diffusion of a fluid through a viscoelastic solid undergoing large deformations. Using ideas from the classical theory of mixtures and a thermodynamic framework based on the notion of maximization of the rate of entropy production, the constitutive relations for a mixture of a viscoelas... | {
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1010.3519 | Distributed Successive Approximation Coding using Broadcast Advantage:
The Two-Encoder Case | [
"cs.IT",
"math.IT"
] | Traditional distributed source coding rarely considers the possible link between separate encoders. However, the broadcast nature of wireless communication in sensor networks provides a free gossip mechanism which can be used to simplify encoding/decoding and reduce transmission power. Using this broadcast advantage, w... | {
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1010.3541 | Heterogenous scaling in interevent time of on-line bookmarking | [
"physics.soc-ph",
"cs.SI"
] | In this paper, we study the statistical properties of bookmarking behaviors in Delicious.com. We find that the interevent time distributions of bookmarking decays powerlike as interevent time increases at both individual and population level. Remarkably, we observe a significant change in the exponent when interevent t... | {
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1010.3547 | Random Topologies and the emergence of cooperation: the role of
short-cuts | [
"physics.soc-ph",
"cs.SI"
] | We study in detail the role of short-cuts in promoting the emergence of cooperation in a network of agents playing the Prisoner's Dilemma Game (PDG). We introduce a model whose topology interpolates between the one-dimensional euclidean lattice (a ring) and the complete graph by changing the value of one parameter (the... | {
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1010.3548 | The positive real lemma and construction of all realizations of
generalized positive rational functions | [
"math.OC",
"cs.SY",
"math.CV"
] | We here extend the well known Positive Real Lemma (also known as the Kalman-Yakubovich-Popov Lemma) to complex matrix-valued generalized positive rational function, when non-minimal realizations are considered. We then exploit this result to provide an easy construction procedure of all (not necessarily minimal) state ... | {
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1010.3601 | High-Throughput Random Access via Codes on Graphs | [
"cs.IT",
"math.IT"
] | Recently, contention resolution diversity slotted ALOHA (CRDSA) has been introduced as a simple but effective improvement to slotted ALOHA. It relies on MAC burst repetitions and on interference cancellation to increase the normalized throughput of a classic slotted ALOHA access scheme. CRDSA allows achieving a larger ... | {
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1010.3613 | The Common Information of N Dependent Random Variables | [
"cs.IT",
"math.IT"
] | This paper generalizes Wyner's definition of common information of a pair of random variables to that of $N$ random variables. We prove coding theorems that show the same operational meanings for the common information of two random variables generalize to that of $N$ random variables. As a byproduct of our proof, we s... | {
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1010.3615 | Scalable XML Collaborative Editing with Undo short paper | [
"cs.DB"
] | Commutative Replicated Data-Type (CRDT) is a new class of algorithms that ensures scalable consistency of replicated data. It has been successfully applied to collaborative editing of texts without complex concurrency control. In this paper, we present a CRDT to edit XML data. Compared to existing approaches for XML co... | {
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1010.3726 | Cascade, Triangular and Two Way Source Coding with degraded side
information at the second user | [
"cs.IT",
"math.IT"
] | We consider the Cascade and Triangular rate-distortion problems where the same side information is available at the source node and User 1, and the side information available at User 2 is a degraded version of the side information at the source node and User 1. We characterize the rate-distortion region for these probl... | {
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1010.3757 | Community Structure in the United Nations General Assembly | [
"physics.soc-ph",
"cs.SI",
"physics.data-an"
] | We study the community structure of networks representing voting on resolutions in the United Nations General Assembly. We construct networks from the voting records of the separate annual sessions between 1946 and 2008 in three different ways: (1) by considering voting similarities as weighted unipartite networks; (2)... | {
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1010.3796 | Mining Knowledge in Astrophysical Massive Data Sets | [
"astro-ph.IM",
"cs.AI"
] | Modern scientific data mainly consist of huge datasets gathered by a very large number of techniques and stored in very diversified and often incompatible data repositories. More in general, in the e-science environment, it is considered as a critical and urgent requirement to integrate services across distributed, het... | {
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1010.3810 | Game Theoretical Power Control for Open-Loop Overlaid Network MIMO
Systems with Partial Cooperation | [
"cs.IT",
"cs.GT",
"math.IT"
] | Network MIMO is considered to be a key solution for the next generation wireless systems in breaking the interference bottleneck in cellular systems. In the MIMO systems, open-loop transmission scheme is used to support mobile stations (MSs) with high mobilities because the base stations (BSs) do not need to track the ... | {
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1010.3815 | Individual and Group Dynamics in Purchasing Activity | [
"physics.soc-ph",
"cs.CE"
] | As a major part of the daily operation in an enterprise, purchasing frequency is of constant change. Recent approaches on the human dynamics can provide some new insights into the economic behaviors of companies in the supply chain. This paper captures the attributes of creation times of purchase orders to an individua... | {
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1010.3867 | Joint interpretation of on-board vision and static GPS cartography for
determination of correct speed limit | [
"cs.CV"
] | We present here a first prototype of a "Speed Limit Support" Advance Driving Assistance System (ADAS) producing permanent reliable information on the current speed limit applicable to the vehicle. Such a module can be used either for information of the driver, or could even serve for automatic setting of the maximum sp... | {
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1010.3898 | Advancements in scientific data searching, sharing and retrieval | [
"cs.IR"
] | The Open Archive Initiative Protocol for Metadata Handling (OAI-PMHiii) is a standard that is seeing increased use as a means for exchanging structured metadata. OAI-PMH implementations must support Dublin Core as a metadata standard, with other metadata formats as optional. We have developed tools which enable Mercury... | {
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1010.3909 | Diffieties and Liouvillian Systems | [
"cs.SY"
] | Liouvillian systems were initially introduced within the framework of differential algebra. They can be seen as a natural extension of differential flat systems. Many physical non flat systems seem to be Liouvillian. We present in this paper an alternative definition to this class of systems using the language of diffi... | {
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1010.3935 | 3-D Rigid Models from Partial Views - Global Factorization | [
"cs.CV"
] | The so-called factorization methods recover 3-D rigid structure from motion by factorizing an observation matrix that collects 2-D projections of features. These methods became popular due to their robustness - they use a large number of views, which constrains adequately the solution - and computational simplicity - t... | {
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1010.3947 | Maximum Likelihood Mosaics | [
"cs.CV"
] | The majority of the approaches to the automatic recovery of a panoramic image from a set of partial views are suboptimal in the sense that the input images are aligned, or registered, pair by pair, e.g., consecutive frames of a video clip. These approaches lead to propagation errors that may be very severe, particularl... | {
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1010.3956 | Combating False Reports for Secure Networked Control in Smart Grid via
Trustiness Evaluation | [
"cs.CR",
"cs.SY"
] | Smart grid, equipped with modern communication infrastructures, is subject to possible cyber attacks. Particularly, false report attacks which replace the sensor reports with fraud ones may cause the instability of the whole power grid or even result in a large area blackout. In this paper, a trustiness system is intro... | {
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1010.3981 | Broadcasting over the Relay Channel with Oblivious Cooperative Strategy | [
"cs.IT",
"math.IT"
] | This paper investigates the problem of information transmission over the simultaneous relay channel with two users (or two possible channel outcomes) where for one of them the more suitable strategy is Decode-and-Forward (DF) while for the other one is Compress-and-Forward (CF). In this setting, it is assumed that the ... | {
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1010.3983 | Digitizing scientific data and data retrieval techniques | [
"cs.IT",
"math.IT"
] | Storing data is easy, but finding and using data is not. It is desirable that the data is stored in a structured format, which can be preserved and retrieved in future. Creating Metadata for the data is one way of creating structured data formats. Metadata can provide Multidisciplinary data access and will foster more ... | {
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1010.3988 | Time-aware Collaborative Filtering with the Piecewise Decay Function | [
"cs.IR",
"physics.soc-ph"
] | In this paper, we determine the appropriate decay function for item-based collaborative filtering (CF). Instead of intuitive deduction, we introduce the Similarity-Signal-to-Noise-Ratio (SSNR) to quantify the impacts of rated items on current recommendations. By measuring the variation of SSNR over time, drift in user ... | {
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1010.4021 | ANSIG - An Analytic Signature for Arbitrary 2D Shapes (or Bags of
Unlabeled Points) | [
"cs.CV"
] | In image analysis, many tasks require representing two-dimensional (2D) shape, often specified by a set of 2D points, for comparison purposes. The challenge of the representation is that it must not only capture the characteristics of the shape but also be invariant to relevant transformations. Invariance to geometric ... | {
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1010.4050 | Efficient Matrix Completion with Gaussian Models | [
"cs.LG"
] | A general framework based on Gaussian models and a MAP-EM algorithm is introduced in this paper for solving matrix/table completion problems. The numerical experiments with the standard and challenging movie ratings data show that the proposed approach, based on probably one of the simplest probabilistic models, leads ... | {
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1010.4059 | Multiplierless Modules for Forward and Backward Integer Wavelet
Transform | [
"cs.AR",
"cs.CV"
] | This article is about the architecture of a lossless wavelet filter bank with reprogrammable logic. It is based on second generation of wavelets with a reduced of number of operations. A new basic structure for parallel architecture and modules to forward and backward integer discrete wavelet transform is proposed. | {
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1010.4065 | Model-Based Development of Distributed Embedded Systems by the Example
of the Scicos/SynDEx Framework | [
"cs.SY",
"cs.AR",
"cs.SE"
] | The embedded systems engineering industry faces increasing demands for more functionality, rapidly evolving components, and shrinking schedules. Abilities to quickly adapt to changes, develop products with safe design, minimize project costs, and deliver timely are needed. Model-based development (MBD) follows a separa... | {
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1010.4088 | Generalized Clustering Coefficients and Milgram Condition for q-th
Degrees of Separation | [
"cs.SI",
"physics.soc-ph"
] | We introduce a series of generalized clustering coefficients based on String formalism given by Aoyama, using adjacent matrix in networks. We numerically evaluate Milgram condition proposed in order to explore q-th degrees of separation in scale free networks and small world networks. We find that scale free network wi... | {
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1010.4098 | Spectral methods for the detection of network community structure: a
comparative analysis | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | Spectral analysis has been successfully applied at the detection of community structure of networks, respectively being based on the adjacency matrix, the standard Laplacian matrix, the normalized Laplacian matrix, the modularity matrix, the correlation matrix and several other variants of these matrices. However, the ... | {
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1010.4138 | Sparse and silent coding in neural circuits | [
"cs.NE"
] | Sparse coding algorithms are about finding a linear basis in which signals can be represented by a small number of active (non-zero) coefficients. Such coding has many applications in science and engineering and is believed to play an important role in neural information processing. However, due to the computational co... | {
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1010.4160 | MIMO APP Receiver Processing with Performance-Determined Complexity | [
"cs.IT",
"math.IT"
] | Typical receiver processing, targeting always the best achievable bit error rate performance, can result in a waste of resources, especially, when the transmission conditions are such that the best performance is orders of magnitude better than the required. In this work, a processing framework is proposed which allows... | {
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1010.4203 | Revisiting Complex Moments For 2D Shape Representation and Image
Normalization | [
"cs.CV"
] | When comparing 2D shapes, a key issue is their normalization. Translation and scale are easily taken care of by removing the mean and normalizing the energy. However, defining and computing the orientation of a 2D shape is not so simple. In fact, although for elongated shapes the principal axis can be used to define on... | {
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1010.4205 | Information Analysis of DNA Sequences | [
"cs.CE",
"cs.IT",
"math.IT"
] | The problem of differentiating the informational content of coding (exons) and non-coding (introns) regions of a DNA sequence is one of the central problems of genomics. The introns are estimated to be nearly 95% of the DNA and since they do not seem to participate in the process of transcription of amino-acids, they h... | {
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1010.4207 | Convex Analysis and Optimization with Submodular Functions: a Tutorial | [
"cs.LG",
"math.OC",
"stat.ML"
] | Set-functions appear in many areas of computer science and applied mathematics, such as machine learning, computer vision, operations research or electrical networks. Among these set-functions, submodular functions play an important role, similar to convex functions on vector spaces. In this tutorial, the theory of sub... | {
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1010.4237 | Robust PCA via Outlier Pursuit | [
"cs.LG",
"cs.IT",
"math.IT",
"stat.ML"
] | Singular Value Decomposition (and Principal Component Analysis) is one of the most widely used techniques for dimensionality reduction: successful and efficiently computable, it is nevertheless plagued by a well-known, well-documented sensitivity to outliers. Recent work has considered the setting where each point has ... | {
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1010.4247 | A Parameterized Centrality Metric for Network Analysis | [
"cs.SI",
"cs.CY",
"physics.soc-ph"
] | A variety of metrics have been proposed to measure the relative importance of nodes in a network. One of these, alpha-centrality [Bonacich, 2001], measures the number of attenuated paths that exist between nodes. We introduce a normalized version of this metric and use it to study network structure, specifically, to ra... | {
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1010.4253 | Large-Scale Clustering Based on Data Compression | [
"cs.LG"
] | This paper considers the clustering problem for large data sets. We propose an approach based on distributed optimization. The clustering problem is formulated as an optimization problem of maximizing the classification gain. We show that the optimization problem can be reformulated and decomposed into small-scale sub ... | {
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1010.4272 | Isospectral Reductions of Dynamical Networks | [
"math.DS",
"cs.SI",
"physics.soc-ph"
] | We present a general and flexible procedure which allows for the reduction (or expansion) of any dynamical network while preserving the spectrum of the network's adjacency matrix. Computationally, this process is simple and easily implemented for the analysis of any network. Moreover, it is possible to isospectrally re... | {
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1010.4293 | Generalized Erdos Numbers | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI",
"math.HO"
] | We propose a simple real-valued generalization of the well known integer-valued Erdos number as a topological, non-metric measure of the `closeness' felt between two nodes in an undirected, weighted graph. These real-valued Erdos numbers are asymmetric and are able to distinguish between network topologies that standar... | {
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1010.4314 | Statistical Compressive Sensing of Gaussian Mixture Models | [
"cs.CV"
] | A new framework of compressive sensing (CS), namely statistical compressive sensing (SCS), that aims at efficiently sampling a collection of signals that follow a statistical distribution and achieving accurate reconstruction on average, is introduced. For signals following a Gaussian distribution, with Gaussian or Ber... | {
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1010.4327 | Cross-Community Dynamics in Science: How Information Retrieval Affects
Semantic Web and Vice Versa | [
"cs.SI",
"cs.IR",
"physics.soc-ph"
] | Community effects on the behaviour of individuals, the community itself and other communities can be observed in a wide range of applications. This is true in scientific research, where communities of researchers have increasingly to justify their impact and progress to funding agencies. While previous work has tried t... | {
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1010.4369 | Direct and Indirect Couplings in Coherent Feedback Control of Linear
Quantum Systems | [
"quant-ph",
"cs.SY",
"math.OC"
] | The purpose of this paper is to study and design direct and indirect couplings for use in coherent feedback control of a class of linear quantum stochastic systems. A general physical model for a nominal linear quantum system coupled directly and indirectly to external systems is presented. Fundamental properties of st... | {
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1010.4385 | A Protocol for Self-Synchronized Duty-Cycling in Sensor Networks:
Generic Implementation in Wiselib | [
"cs.AI"
] | In this work we present a protocol for self-synchronized duty-cycling in wireless sensor networks with energy harvesting capabilities. The protocol is implemented in Wiselib, a library of generic algorithms for sensor networks. Simulations are conducted with the sensor network simulator Shawn. They are based on the spe... | {
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1010.4408 | Sublinear Optimization for Machine Learning | [
"cs.LG"
] | We give sublinear-time approximation algorithms for some optimization problems arising in machine learning, such as training linear classifiers and finding minimum enclosing balls. Our algorithms can be extended to some kernelized versions of these problems, such as SVDD, hard margin SVM, and L2-SVM, for which sublinea... | {
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1010.4466 | On the Foundations of Adversarial Single-Class Classification | [
"cs.LG",
"cs.AI"
] | Motivated by authentication, intrusion and spam detection applications we consider single-class classification (SCC) as a two-person game between the learner and an adversary. In this game the learner has a sample from a target distribution and the goal is to construct a classifier capable of distinguishing observation... | {
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1010.4484 | A Type II lattice of norm 8 in dimension 72 | [
"cs.IT",
"math.IT"
] | A Type II lattice of norm 8 in dimension 72 is obtained by Construction A applied to an extended Quadratic Residue code over Z8. Its automorphism group contains a subgroup isomorphic to PSL(2,71). | {
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1010.4498 | The critical effect of dependency groups on the function of networks | [
"physics.data-an",
"cs.SI",
"physics.soc-ph"
] | Current network models assume one type of links to define the relations between the network entities. However, many real networks can only be correctly described using two different types of relations. Connectivity links that enable the nodes to function cooperatively as a network and dependency links that bind the fai... | {
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1010.4499 | Hedonic Coalition Formation for Distributed Task Allocation among
Wireless Agents | [
"cs.IT",
"cs.GT",
"math.IT"
] | Autonomous wireless agents such as unmanned aerial vehicles or mobile base stations present a great potential for deployment in next-generation wireless networks. While current literature has been mainly focused on the use of agents within robotics or software applications, we propose a novel usage model for self-organ... | {
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1010.4501 | Coalition Formation Games for Collaborative Spectrum Sensing | [
"cs.IT",
"cs.GT",
"math.IT"
] | Collaborative Spectrum Sensing (CSS) between secondary users (SUs) in cognitive networks exhibits an inherent tradeoff between minimizing the probability of missing the detection of the primary user (PU) and maintaining a reasonable false alarm probability (e.g., for maintaining a good spectrum utilization). In this pa... | {
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1010.4504 | Reading Dependencies from Covariance Graphs | [
"stat.ML",
"cs.AI",
"math.ST",
"stat.TH"
] | The covariance graph (aka bi-directed graph) of a probability distribution $p$ is the undirected graph $G$ where two nodes are adjacent iff their corresponding random variables are marginally dependent in $p$. In this paper, we present a graphical criterion for reading dependencies from $G$, under the assumption that $... | {
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1010.4506 | Inter-similarity between coupled networks | [
"physics.data-an",
"cs.SI",
"physics.soc-ph"
] | Recent studies have shown that a system composed from several randomly interdependent networks is extremely vulnerable to random failure. However, real interdependent networks are usually not randomly interdependent, rather a pair of dependent nodes are coupled according to some regularity which we coin inter-similarit... | {
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} |
1010.4517 | Synchronization and Redundancy: Implications for Robustness of Neural
Learning and Decision Making | [
"q-bio.NC",
"cs.NE"
] | Learning and decision making in the brain are key processes critical to survival, and yet are processes implemented by non-ideal biological building blocks which can impose significant error. We explore quantitatively how the brain might cope with this inherent source of error by taking advantage of two ubiquitous mech... | {
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1010.4548 | Windowed Decoding of Protograph-based LDPC Convolutional Codes over
Erasure Channels | [
"cs.IT",
"math.IT"
] | We consider a windowed decoding scheme for LDPC convolutional codes that is based on the belief-propagation (BP) algorithm. We discuss the advantages of this decoding scheme and identify certain characteristics of LDPC convolutional code ensembles that exhibit good performance with the windowed decoder. We will conside... | {
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1010.4561 | New S-norm and T-norm Operators for Active Learning Method | [
"cs.AI"
] | Active Learning Method (ALM) is a soft computing method used for modeling and control based on fuzzy logic. All operators defined for fuzzy sets must serve as either fuzzy S-norm or fuzzy T-norm. Despite being a powerful modeling method, ALM does not possess operators which serve as S-norms and T-norms which deprive it... | {
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} |
1010.4603 | Write Channel Model for Bit-Patterned Media Recording | [
"cs.IT",
"math.IT"
] | We propose a new write channel model for bit-patterned media recording that reflects the data dependence of write synchronization errors. It is shown that this model accommodates both substitution-like errors and insertion-deletion errors whose statistics are determined by an underlying channel state process. We study ... | {
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1010.4609 | A Partial Taxonomy of Substitutability and Interchangeability | [
"cs.AI"
] | Substitutability, interchangeability and related concepts in Constraint Programming were introduced approximately twenty years ago and have given rise to considerable subsequent research. We survey this work, classify, and relate the different concepts, and indicate directions for future work, in particular with respec... | {
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1010.4612 | Recovering Compressively Sampled Signals Using Partial Support
Information | [
"cs.IT",
"cs.SY",
"math.IT",
"math.OC"
] | In this paper we study recovery conditions of weighted $\ell_1$ minimization for signal reconstruction from compressed sensing measurements when partial support information is available. We show that if at least 50% of the (partial) support information is accurate, then weighted $\ell_1$ minimization is stable and robu... | {
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} |
1010.4672 | Controller Synthesis for Safety and Reachability via Approximate
Bisimulation | [
"cs.SY",
"cs.LO",
"math.OC"
] | In this paper, we consider the problem of controller design using approximately bisimilar abstractions with an emphasis on safety and reachability specifications. We propose abstraction-based approaches to solve both classes of problems. We start by synthesizing a controller for an approximately bisimilar abstraction. ... | {
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} |
1010.4690 | A convex approximation approach to Weighted Sum Rate Maximization of
Multiuser MISO Interference Channel under outage constraints | [
"cs.IT",
"math.IT"
] | This paper considers weighted sum rate maximization of multiuser multiple-input single-output interference channel (MISO-IFC) under outage constraints. The outage-constrained weighted sum rate maximization problem is a nonconvex optimization problem and is difficult to solve. While it is possible to optimally deal with... | {
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} |
1010.4702 | Spectral Perturbation and Reconstructability of Complex Networks | [
"cond-mat.stat-mech",
"cs.SI",
"physics.soc-ph"
] | In recent years, many network perturbation techniques, such as topological perturbations and service perturbations, were employed to study and improve the robustness of complex networks. However, there is no general way to evaluate the network robustness. In this paper, we propose a new global measure for a network, th... | {
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} |
1010.4726 | Information Maximization Fails to Maximize Expected Utility in a Simple
Foraging Model | [
"q-bio.OT",
"cs.IT",
"math.IT",
"physics.bio-ph"
] | Information theory has explained the organization of many biological phenomena, from the physiology of sensory receptive fields to the variability of certain DNA sequence ensembles. Some scholars have proposed that information should provide the central explanatory principle in biology, in the sense that any behavioral... | {
"Other": 0,
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} |
1010.4747 | Collaboration in computer science: a network science approach. Part I | [
"cs.SI",
"cs.DL",
"physics.soc-ph"
] | Co-authorship in publications within a discipline uncovers interesting properties of the analysed field. We represent collaboration in academic papers of computer science in terms of differently grained networks, including those sub-networks that emerge from conference and journal co-authorship only. We take advantage ... | {
"Other": 1,
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"cs.SI": 1,
"cs.SY": 0
} |
1010.4751 | Sparse coding and dictionary learning based on the MDL principle | [
"cs.IT",
"math.IT",
"math.ST",
"stat.TH"
] | The power of sparse signal coding with learned dictionaries has been demonstrated in a variety of applications and fields, from signal processing to statistical inference and machine learning. However, the statistical properties of these models, such as underfitting or overfitting given sets of data, are still not well... | {
"Other": 0,
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} |
1010.4784 | Learning under Concept Drift: an Overview | [
"cs.AI"
] | Concept drift refers to a non stationary learning problem over time. The training and the application data often mismatch in real life problems. In this report we present a context of concept drift problem 1. We focus on the issues relevant to adaptive training set formation. We present the framework and terminology, a... | {
"Other": 0,
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} |
1010.4786 | Blocking Underhand Attacks by Hidden Coalitions (Extended Version) | [
"cs.CR",
"cs.LO",
"cs.MA"
] | Similar to what happens between humans in the real world, in open multi-agent systems distributed over the Internet, such as online social networks or wiki technologies, agents often form coalitions by agreeing to act as a whole in order to achieve certain common goals. However, agent coalitions are not always a desira... | {
"Other": 1,
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"cs.NE": 0,
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"cs.SD": 0,
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"cs.SY": 0
} |
1010.4820 | Random-Time, State-Dependent Stochastic Drift for Markov Chains and
Application to Stochastic Stabilization Over Erasure Channels | [
"math.OC",
"cs.IT",
"cs.SY",
"math.IT"
] | It is known that state-dependent, multi-step Lyapunov bounds lead to greatly simplified verification theorems for stability for large classes of Markov chain models. This is one component of the "fluid model" approach to stability of stochastic networks. In this paper we extend the general theory to randomized multi-st... | {
"Other": 0,
"cs.AI": 0,
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"cs.CR": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 1
} |
1010.4824 | On Optimal Causal Coding of Partially Observed Markov Sources in Single
and Multi-Terminal Settings | [
"cs.IT",
"math.IT"
] | The optimal causal coding of a partially observed Markov process is studied, where the cost to be minimized is a bounded, non-negative, additive, measurable single-letter function of the source and the receiver output. A structural result is obtained extending Witsenhausen's and Walrand-Varaiya's structural results on ... | {
"Other": 0,
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"cs.IT": 1,
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"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1010.4830 | A Unifying Probabilistic Perspective for Spectral Dimensionality
Reduction: Insights and New Models | [
"cs.AI"
] | We introduce a new perspective on spectral dimensionality reduction which views these methods as Gaussian Markov random fields (GRFs). Our unifying perspective is based on the maximum entropy principle which is in turn inspired by maximum variance unfolding. The resulting model, which we call maximum entropy unfolding ... | {
"Other": 0,
"cs.AI": 1,
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} |
1010.4843 | DAME: A Web Oriented Infrastructure for Scientific Data Mining &
Exploration | [
"astro-ph.IM",
"astro-ph.GA",
"cs.DB",
"cs.DC",
"cs.SE"
] | Nowadays, many scientific areas share the same need of being able to deal with massive and distributed datasets and to perform on them complex knowledge extraction tasks. This simple consideration is behind the international efforts to build virtual organizations such as, for instance, the Virtual Observatory (VObs). D... | {
"Other": 1,
"cs.AI": 0,
"cs.CE": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1010.4850 | Treillis des concepts skylines : Analyse multidimensionnelle des
skylines fond\'ee sur les ensembles en accord | [
"cs.DB"
] | The skyline concept has been introduced in order to exhibit the best objects according to all the criterion combinations and makes it possible to analyse the relationships between skyline objects. Like the data cube, the skycube is so voluminous that reduction approaches are really necessary. In this paper, we define a... | {
"Other": 0,
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
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