id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1011.2575 | Complex sequencing rules of birdsong can be explained by simple hidden
Markov processes | [
"q-bio.NC",
"cs.CL"
] | Complex sequencing rules observed in birdsongs provide an opportunity to investigate the neural mechanism for generating complex sequential behaviors. To relate the findings from studying birdsongs to other sequential behaviors, it is crucial to characterize the statistical properties of the sequencing rules in birdson... | {
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1011.2624 | Clustering using Unsupervised Binary Trees: CUBT | [
"stat.ME",
"cs.LG",
"stat.CO"
] | We herein introduce a new method of interpretable clustering that uses unsupervised binary trees. It is a three-stage procedure, the first stage of which entails a series of recursive binary splits to reduce the heterogeneity of the data within the new subsamples. During the second stage (pruning), consideration is giv... | {
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1011.2644 | Do AES encryptions act randomly? | [
"cs.IT",
"cs.CR",
"math.IT"
] | The Advanced Encryption Standard (AES) is widely recognized as the most important block cipher in common use nowadays. This high assurance in AES is given by its resistance to ten years of extensive cryptanalysis, that has shown no weakness, not even any deviation from the statistical behaviour expected from a random p... | {
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1011.2686 | A Discrete Time Markov Chain Model for High Throughput Bidirectional
Fano Decoders | [
"cs.IT",
"math.IT"
] | The bidirectional Fano algorithm (BFA) can achieve at least two times decoding throughput compared to the conventional unidirectional Fano algorithm (UFA). In this paper, bidirectional Fano decoding is examined from the queuing theory perspective. A Discrete Time Markov Chain (DTMC) is employed to model the BFA decoder... | {
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1011.2689 | Contact processes and moment closure on adaptive networks | [
"physics.soc-ph",
"cs.SI"
] | Contact processes describe the transmission of distinct properties of nodes via the links of a network. They provide a simple framework for many phenomena, such as epidemic spreading and opinion formation. Combining contact processes with rules for topological evolution yields an adaptive network in which the states of... | {
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1011.2719 | Decidability Classes for Mobile Agents Computing | [
"cs.DC",
"cs.CC",
"cs.MA"
] | We establish a classification of decision problems that are to be solved by mobile agents operating in unlabeled graphs, using a deterministic protocol. The classification is with respect to the ability of a team of agents to solve the problem, possibly with the aid of additional information. In particular, our focus i... | {
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1011.2740 | Deterministic Compressed Sensing Matrices from Multiplicative Character
Sequences | [
"cs.IT",
"math.IT"
] | Compressed sensing is a novel technique where one can recover sparse signals from the undersampled measurements. In this paper, a $K \times N$ measurement matrix for compressed sensing is deterministically constructed via multiplicative character sequences. Precisely, a constant multiple of a cyclic shift of an $M$-ary... | {
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1011.2795 | A Distributed Data Collection Algorithm for Wireless Sensor Networks
with Persistent Storage Nodes | [
"cs.NI",
"cs.IT",
"math.IT"
] | A distributed data collection algorithm to accurately store and forward information obtained by wireless sensor networks is proposed. The proposed algorithm does not depend on the sensor network topology, routing tables, or geographic locations of sensor nodes, but rather makes use of uniformly distributed storage node... | {
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1011.2797 | When are microcircuits well-modeled by maximum entropy methods? | [
"q-bio.NC",
"cond-mat.dis-nn",
"cs.IT",
"math.IT",
"physics.data-an"
] | Describing the collective activity of neural populations is a daunting task: the number of possible patterns grows exponentially with the number of cells, resulting in practically unlimited complexity. Recent empirical studies, however, suggest a vast simplification in how multi-neuron spiking occurs: the activity patt... | {
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1011.2807 | Efficient K-Nearest Neighbor Join Algorithms for High Dimensional Sparse
Data | [
"cs.DB",
"cs.DS"
] | The K-Nearest Neighbor (KNN) join is an expensive but important operation in many data mining algorithms. Several recent applications need to perform KNN join for high dimensional sparse data. Unfortunately, all existing KNN join algorithms are designed for low dimensional data. To fulfill this void, we investigate the... | {
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1011.2809 | Multipath Parameter Estimation from OFDM Signals in Mobile Channels | [
"cs.IT",
"math.IT"
] | We study multipath parameter estimation from orthogonal frequency division multiplex signals transmitted over doubly dispersive mobile radio channels. We are interested in cases where the transmission is long enough to suffer time selectivity, but short enough such that the time variation can be accurately modeled as d... | {
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1011.2834 | New Set of Codes for the Maximum-Likelihood Decoding Problem | [
"cs.IT",
"math.IT"
] | The maximum-likelihood decoding problem is known to be NP-hard for general linear and Reed-Solomon codes. In this paper, we introduce the notion of A-covered codes, that is, codes that can be decoded through a polynomial time algorithm A whose decoding bound is beyond the covering radius. For these codes, we show that ... | {
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1011.2835 | Approximately Optimal Wireless Broadcasting | [
"cs.IT",
"cs.NI",
"math.IT"
] | We study a wireless broadcast network, where a single source reliably communicates independent messages to multiple destinations, with the aid of relays and cooperation between destinations. The wireless nature of the medium is captured by the broadcast nature of transmissions as well as the superposition of all transm... | {
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1011.2898 | Reified unit resolution and the failed literal rule | [
"cs.LO",
"cs.AI"
] | Unit resolution can simplify a CNF formula or detect an inconsistency by repeatedly assign the variables occurring in unit clauses. Given any CNF formula sigma, we show that there exists a satisfiable CNF formula psi with size polynomially related to the size of sigma such that applying unit resolution to psi simulates... | {
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1011.2918 | Mean field limit of a continuous time finite state game | [
"math.OC",
"cs.SY",
"math.DS"
] | Mean field games is a recent area of study introduced by Lions and Lasry in a series of seminal papers in 2006. Mean field games model situations of competition between large number of rational agents that play non-cooperative dynamic games under certain symmetry assumptions. They key step is to develop a mean field mo... | {
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1011.2919 | Hardware architectures for Successive Cancellation Decoding of Polar
Codes | [
"cs.AR",
"cs.IT",
"math.IT"
] | The recently-discovered polar codes are widely seen as a major breakthrough in coding theory. These codes achieve the capacity of many important channels under successive cancellation decoding. Motivated by the rapid progress in the theory of polar codes, we propose a family of architectures for efficient hardware impl... | {
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1011.2922 | Emoticonsciousness | [
"cs.CL"
] | A temporal analysis of emoticon use in Swedish, Italian, German and English asynchronous electronic communication is reported. Emoticons are classified as positive, negative and neutral. Postings to newsgroups over a 66 week period are considered. The aggregate analysis of emoticon use in newsgroups for science and pol... | {
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1011.2945 | Phase transitions for the cavity approach to the clique problem on
random graphs | [
"math.PR",
"cond-mat.stat-mech",
"cs.SI",
"physics.soc-ph"
] | We give a rigorous proof of two phase transitions for a disordered system designed to find large cliques inside Erdos random graphs. Such a system is associated with a conservative probabilistic cellular automaton inspired by the cavity method originally introduced in spin glass theory. | {
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1011.2989 | A Decoding Approach to Fault Tolerant Control of Linear Systems with
Quantized Disturbance Input | [
"math.OC",
"cs.IT",
"math.IT"
] | The aim of this paper is to propose an alternative method to solve a Fault Tolerant Control problem. The model is a linear system affected by a disturbance term: this represents a large class of technological faulty processes. The goal is to make the system able to tolerate the undesired perturbation, i.e., to remove o... | {
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1011.2996 | Large-deviation properties of largest component for random graphs | [
"cond-mat.dis-nn",
"cs.SI",
"physics.data-an",
"physics.soc-ph"
] | Distributions of the size of the largest component, in particular the large-deviation tail, are studied numerically for two graph ensembles, for Erdoes-Renyi random graphs with finite connectivity and for two-dimensional bond percolation. Probabilities as small as 10^-180 are accessed using an artificial finite-tempera... | {
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1011.3019 | Bounded Multivariate Surfaces On Monovariate Internal Functions | [
"cs.CV"
] | Combining the properties of monovariate internal functions as proposed in Kolmogorov superimposition theorem, in tandem with the bounds wielded by the multivariate formulation of Chebyshev inequality, a hybrid model is presented, that decomposes images into homogeneous probabilistically bounded multivariate surfaces. G... | {
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1011.3023 | Classification with Scattering Operators | [
"cs.CV"
] | A scattering vector is a local descriptor including multiscale and multi-direction co-occurrence information. It is computed with a cascade of wavelet decompositions and complex modulus. This scattering representation is locally translation invariant and linearizes deformations. A supervised classification algorithm is... | {
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1011.3062 | Generalized Stable Matching in Bipartite Networks | [
"math.OC",
"cs.DM",
"cs.GT",
"cs.SI"
] | In this paper we study the generalized version of weighted matching in bipartite networks. Consider a weighted matching in a bipartite network in which the nodes derive value from the split of the matching edge assigned to them if they are matched. The value a node derives from the split depends both on the split as we... | {
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1011.3074 | Distributed Detection over Gaussian Multiple Access Channels with
Constant Modulus Signaling | [
"cs.IT",
"math.IT"
] | A distributed detection scheme where the sensors transmit with constant modulus signals over a Gaussian multiple access channel is considered. The deflection coefficient of the proposed scheme is shown to depend on the characteristic function of the sensing noise and the error exponent for the system is derived using l... | {
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1011.3090 | Regularization Strategies and Empirical Bayesian Learning for MKL | [
"stat.ML",
"cs.LG"
] | Multiple kernel learning (MKL), structured sparsity, and multi-task learning have recently received considerable attention. In this paper, we show how different MKL algorithms can be understood as applications of either regularization on the kernel weights or block-norm-based regularization, which is more common in str... | {
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1011.3115 | Cyber-Physical Control over Wireless Sensor and Actuator Networks with
Packet Loss | [
"cs.NI",
"cs.SY"
] | There is a growing interest in design and implementation of cyber-physical control systems over wireless sensor and actuator networks (WSANs). Thanks to the use of wireless communications and distributed architectures, these systems encompass many advantages as compared to traditional networked control systems using ha... | {
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1011.3120 | The Local Emergence and Global Diffusion of Research Technologies: An
Exploration of Patterns of Network Formation | [
"cs.DL",
"cs.SI"
] | Grasping the fruits of "emerging technologies" is an objective of many government priority programs in a knowledge-based and globalizing economy. We use the publication records (in the Science Citation Index) of two emerging technologies to study the mechanisms of diffusion in the case of two innovation trajectories: s... | {
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1011.3152 | On the Energy Efficiency of LT Codes in Proactive Wireless Sensor
Networks | [
"cs.IT",
"math.IT"
] | This paper presents an in-depth analysis on the energy efficiency of Luby Transform (LT) codes with Frequency Shift Keying (FSK) modulation in a Wireless Sensor Network (WSN) over Rayleigh fading channels with pathloss. We describe a proactive system model according to a flexible duty-cycling mechanism utilized in prac... | {
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1011.3168 | Online Learning: Beyond Regret | [
"stat.ML",
"cs.GT",
"cs.LG"
] | We study online learnability of a wide class of problems, extending the results of (Rakhlin, Sridharan, Tewari, 2010) to general notions of performance measure well beyond external regret. Our framework simultaneously captures such well-known notions as internal and general Phi-regret, learning with non-additive global... | {
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1011.3174 | Tensor-SIFT based Earth Mover's Distance for Contour Tracking | [
"cs.CV",
"math.OC"
] | Contour tracking in adverse environments is a challenging problem due to cluttered background, illumination variation, occlusion, and noise, among others. This paper presents a robust contour tracking method by contributing to some of the key issues involved, including (a) a region functional formulation and its optimi... | {
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1011.3177 | The Data Replication Method for the Classification with Reject Option | [
"cs.CV"
] | Classification is one of the most important tasks of machine learning. Although the most well studied model is the two-class problem, in many scenarios there is the opportunity to label critical items for manual revision, instead of trying to automatically classify every item. In this paper we adapt a paradigm initiall... | {
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1011.3189 | Warping Peirce Quincuncial Panoramas | [
"cs.CV",
"cs.GR",
"eess.IV"
] | The Peirce quincuncial projection is a mapping of the surface of a sphere to the interior of a square. It is a conformal map except for four points on the equator. These points of non-conformality cause significant artifacts in photographic applications. In this paper, we propose an algorithm and user-interface to miti... | {
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1011.3241 | New Methods of Analysis of Narrative and Semantics in Support of
Interactivity | [
"cs.AI",
"cs.HC",
"stat.AP"
] | Our work has focused on support for film or television scriptwriting. Since this involves potentially varied story-lines, we note the implicit or latent support for interactivity. Furthermore the film, television, games, publishing and other sectors are converging, so that cross-over and re-use of one form of product i... | {
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1011.3244 | "Meaning" as a sociological concept: A review of the modeling, mapping,
and simulation of the communication of knowledge and meaning | [
"nlin.AO",
"cs.AI",
"physics.soc-ph"
] | The development of discursive knowledge presumes the communication of meaning as analytically different from the communication of information. Knowledge can then be considered as a meaning which makes a difference. Whereas the communication of information is studied in the information sciences and scientometrics, the c... | {
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1011.3257 | Integration of Flexible Web Based GUI in I-SOAS | [
"cs.HC",
"cs.AI"
] | It is necessary to improve the concepts of the present web based graphical user interface for the development of more flexible and intelligent interface to provide ease and increase the level of comfort at user end like most of the desktop based applications. This research is conducted targeting the goal of implementin... | {
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1011.3258 | Integration of Agile Ontology Mapping towards NLP Search in I-SOAS | [
"cs.CL",
"cs.IR"
] | In this research paper we address the importance of Product Data Management (PDM) with respect to its contributions in industry. Moreover we also present some currently available major challenges to PDM communities and targeting some of these challenges we present an approach i.e. I-SOAS, and briefly discuss how this a... | {
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1011.3272 | Group-Decodable Space-Time Block Codes with Code Rate > 1 | [
"cs.IT",
"math.IT"
] | High-rate space-time block codes (STBC with code rate > 1) in multi-input multi-output (MIMO) systems are able to provide both spatial multiplexing gain and diversity gain, but have high maximum likelihood (ML) decoding complexity. Since group-decodable (quasi-orthogonal) code structure can reduce the decoding complexi... | {
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1011.3315 | Evolutionary method for finding communities in bipartite networks | [
"physics.data-an",
"cond-mat.stat-mech",
"cs.NE",
"cs.SI",
"physics.soc-ph"
] | An important step in unveiling the relation between network structure and dynamics defined on networks is to detect communities, and numerous methods have been developed separately to identify community structure in different classes of networks, such as unipartite networks, bipartite networks, and directed networks. W... | {
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1011.3347 | On sizes of complete arcs in PG(2,q) | [
"math.CO",
"cs.IT",
"math.IT"
] | New upper bounds on the smallest size t_{2}(2,q) of a complete arc in the projective plane PG(2,q) are obtained for 853 <= q <= 4561 and q\in T1\cup T2 where T1={173,181,193,229,243,257,271,277,293,343,373,409,443,449,457, 461,463,467,479,487,491,499,529,563,569,571,577,587,593,599,601,607,613,617,619,631, 641,661,673,... | {
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1011.3380 | Achievable Rates over Doubly Selective Rician-Fading Channels under
Peak-Power Constraint | [
"cs.IT",
"math.IT"
] | The goal of this paper is to obtain a better knowledge of the achievable data rate over noncoherent Rician fading channel with time and frequency memory. We assume that the average-power as well as the peak-power of the input signal are finite and the peak-power limitation is applied in the time domain. Expression for ... | {
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1011.3397 | The Inverse Task of the Reflexive Game Theory: Theoretical Matters,
Practical Applications and Relationship with Other Issues | [
"cs.MA",
"cs.AI",
"cs.RO"
] | The Reflexive Game Theory (RGT) has been recently proposed by Vladimir Lefebvre to model behavior of individuals in groups. The goal of this study is to introduce the Inverse task. We consider methods of solution together with practical applications. We present a brief overview of the RGT for easy understanding of the ... | {
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1011.3400 | Prize insights in probability, and one goat of a recycled error: Jason
Rosenhouse's The Monty Hall Problem | [
"math.HO",
"cs.AI",
"math.PR",
"math.ST",
"stat.TH"
] | The Monty Hall problem is the TV game scenario where you, the contestant, are presented with three doors, with a car hidden behind one and goats hidden behind the other two. After you select a door, the host (Monty Hall) opens a second door to reveal a goat. You are then invited to stay with your original choice of doo... | {
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1011.3466 | Non-Existence of Linear Universal Drift Functions | [
"cs.NE",
"math.PR"
] | Drift analysis has become a powerful tool to prove bounds on the runtime of randomized search heuristics. It allows, for example, fairly simple proofs for the classical problem how the (1+1) Evolutionary Algorithm (EA) optimizes an arbitrary pseudo-Boolean linear function. The key idea of drift analysis is to measure t... | {
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1011.3494 | Learning Planar Ising Models | [
"stat.ML",
"cs.AI"
] | Inference and learning of graphical models are both well-studied problems in statistics and machine learning that have found many applications in science and engineering. However, exact inference is intractable in general graphical models, which suggests the problem of seeking the best approximation to a collection of ... | {
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1011.3498 | Effects of the Generation Size and Overlap on Throughput and Complexity
in Randomized Linear Network Coding | [
"cs.IT",
"cs.DM",
"math.IT"
] | To reduce computational complexity and delay in randomized network coded content distribution, and for some other practical reasons, coding is not performed simultaneously over all content blocks, but over much smaller, possibly overlapping subsets of these blocks, known as generations. A penalty of this strategy is th... | {
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1011.3516 | A statistical-mechanical view on source coding: physical compression and
data compression | [
"cond-mat.stat-mech",
"cs.IT",
"math.IT"
] | We draw a certain analogy between the classical information-theoretic problem of lossy data compression (source coding) of memoryless information sources and the statistical mechanical behavior of a certain model of a chain of connected particles (e.g., a polymer) that is subjected to a contracting force. The free ener... | {
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1011.3550 | Overlay Protection Against Link Failures Using Network Coding | [
"cs.IT",
"math.IT"
] | This paper introduces a network coding-based protection scheme against single and multiple link failures. The proposed strategy ensures that in a connection, each node receives two copies of the same data unit: one copy on the working circuit, and a second copy that can be extracted from linear combinations of data uni... | {
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1011.3557 | A Probabilistic Approach for Learning Folksonomies from Structured Data | [
"cs.AI",
"cs.CY",
"cs.LG"
] | Learning structured representations has emerged as an important problem in many domains, including document and Web data mining, bioinformatics, and image analysis. One approach to learning complex structures is to integrate many smaller, incomplete and noisy structure fragments. In this work, we present an unsupervise... | {
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1011.3571 | A Framework for Quantitative Analysis of Cascades on Networks | [
"cs.SI",
"cs.CY",
"physics.soc-ph"
] | How does information flow in online social networks? How does the structure and size of the information cascade evolve in time? How can we efficiently mine the information contained in cascade dynamics? We approach these questions empirically and present an efficient and scalable mathematical framework for quantitative... | {
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1011.3588 | Distributed Interference Cancellation in Multiple Access Channels | [
"cs.IT",
"math.IT"
] | In this paper, we consider a Gaussian multiple access channel with multiple independent additive white Gaussian interferences. Each interference is known to exactly one transmitter non-causally. The capacity region is characterized to within a constant gap regardless of channel parameters. These results are based on a ... | {
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1011.3595 | Optimizing real-time RDF data streams | [
"cs.AI",
"cs.PF"
] | The Resource Description Framework (RDF) provides a common data model for the integration of "real-time" social and sensor data streams with the Web and with each other. While there exist numerous protocols and data formats for exchanging dynamic RDF data, or RDF updates, these options should be examined carefully in o... | {
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1011.3710 | Accuracy of Mean-Field Theory for Dynamics on Real-World Networks | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | Mean-field analysis is an important tool for understanding dynamics on complex networks. However, surprisingly little attention has been paid to the question of whether mean-field predictions are accurate, and this is particularly true for real-world networks with clustering and modular structure. In this paper, we com... | {
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1011.3717 | Random Beamforming over Quasi-Static and Fading Channels: A
Deterministic Equivalent Approach | [
"cs.IT",
"math.IT"
] | In this work, we study the performance of random isometric precoders over quasi-static and correlated fading channels. We derive deterministic approximations of the mutual information and the signal-to-interference-plus-noise ratio (SINR) at the output of the minimum-mean-square-error (MMSE) receiver and provide simple... | {
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1011.3722 | Statistical mechanical analysis of a hierarchical random code ensemble
in signal processing | [
"cond-mat.dis-nn",
"cs.IT",
"math.IT"
] | We study a random code ensemble with a hierarchical structure, which is closely related to the generalized random energy model with discrete energy values. Based on this correspondence, we analyze the hierarchical random code ensemble by using the replica method in two situations: lossy data compression and channel cod... | {
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1011.3728 | PADDLE: Proximal Algorithm for Dual Dictionaries LEarning | [
"cs.LG",
"cs.IT",
"math.IT",
"stat.ML"
] | Recently, considerable research efforts have been devoted to the design of methods to learn from data overcomplete dictionaries for sparse coding. However, learned dictionaries require the solution of an optimization problem for coding new data. In order to overcome this drawback, we propose an algorithm aimed at learn... | {
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1011.3754 | Principles of Physical Layer Security in Multiuser Wireless Networks: A
Survey | [
"cs.IT",
"math.IT"
] | This paper provides a comprehensive review of the domain of physical layer security in multiuser wireless networks. The essential premise of physical-layer security is to enable the exchange of confidential messages over a wireless medium in the presence of unauthorized eavesdroppers without relying on higher-layer enc... | {
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1011.3761 | Lossy compression of discrete sources via Viterbi algorithm | [
"cs.IT",
"math.IT"
] | We present a new lossy compressor for discrete-valued sources. For coding a sequence $x^n$, the encoder starts by assigning a certain cost to each possible reconstruction sequence. It then finds the one that minimizes this cost and describes it losslessly to the decoder via a universal lossless compressor. The cost of ... | {
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1011.3768 | Detecting and Tracking the Spread of Astroturf Memes in Microblog
Streams | [
"cs.SI",
"cs.CY"
] | Online social media are complementing and in some cases replacing person-to-person social interaction and redefining the diffusion of information. In particular, microblogs have become crucial grounds on which public relations, marketing, and political battles are fought. We introduce an extensible framework that will ... | {
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1011.3812 | Comments on Degrees of freedom region for $K$-user interference channel
with $M$ antennas | [
"cs.IT",
"math.IT"
] | For a $K$-user interference channel with $M$ antenna at each transmitter and each receiver, the maximum total DoF of this channel has been previously determined to be $\max \sum_{k=1}^K d_k = MK/2$. However, the DoF region remains to be unknown. In this short note, through a simple time-sharing argument, we obtain the ... | {
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1011.3834 | Ising-like agent-based technology diffusion model: adoption patterns vs.
seeding strategies | [
"physics.soc-ph",
"cs.SI",
"q-fin.TR"
] | The well-known Ising model used in statistical physics was adapted to a social dynamics context to simulate the adoption of a technological innovation. The model explicitly combines (a) an individual's perception of the advantages of an innovation and (b) social influence from members of the decision-maker's social net... | {
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1011.3854 | A probabilistic and RIPless theory of compressed sensing | [
"cs.IT",
"math.IT"
] | This paper introduces a simple and very general theory of compressive sensing. In this theory, the sensing mechanism simply selects sensing vectors independently at random from a probability distribution F; it includes all models - e.g. Gaussian, frequency measurements - discussed in the literature, but also provides a... | {
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1011.3867 | Interference Alignment Through User Cooperation for Two-cell MIMO
Interfering Broadcast Channels | [
"cs.IT",
"math.IT"
] | This paper focuses on two-cell multiple-input multiple-output (MIMO) Gaussian interfering broadcast channels (MIMO-IFBC) with $K$ cooperating users on the cell-boundary of each BS. It corresponds to a downlink scenario for cellular networks with two base stations (BSs), and $K$ users equipped with Wi-Fi interfaces enab... | {
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1011.3870 | Network error correction with unequal link capacities | [
"cs.IT",
"math.IT"
] | This paper studies the capacity of single-source single-sink noiseless networks under adversarial or arbitrary errors on no more than z edges. Unlike prior papers, which assume equal capacities on all links, arbitrary link capacities are considered. Results include new upper bounds, network error correction coding stra... | {
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1011.3878 | On the Critical Coupling for Kuramoto Oscillators | [
"math.DS",
"cs.SY",
"math-ph",
"math.MP",
"math.OC",
"nlin.CD"
] | The Kuramoto model captures various synchronization phenomena in biological and man-made systems of coupled oscillators. It is well-known that there exists a critical coupling strength among the oscillators at which a phase transition from incoherency to synchronization occurs. This paper features four contributions. F... | {
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1011.3879 | Algebraic Watchdog: Mitigating Misbehavior in Wireless Network Coding | [
"cs.CR",
"cs.IT",
"cs.NI",
"math.IT"
] | We propose a secure scheme for wireless network coding, called the algebraic watchdog. By enabling nodes to detect malicious behaviors probabilistically and use overheard messages to police their downstream neighbors locally, the algebraic watchdog delivers a secure global self-checking network. Unlike traditional Byza... | {
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1011.3890 | Optimal Distributed Beamforming for MISO Interference Channels | [
"cs.IT",
"math.IT"
] | We consider the problem of quantifying the Pareto optimal boundary in the achievable rate region over multiple-input single-output (MISO) interference channels, where the problem boils down to solving a sequence of convex feasibility problems after certain transformations. The feasibility problem is solved by two new d... | {
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1011.3912 | Artificial Hormone Reaction Networks: Towards Higher Evolvability in
Evolutionary Multi-Modular Robotics | [
"cs.RO",
"cs.AI",
"cs.NE"
] | The semi-automatic or automatic synthesis of robot controller software is both desirable and challenging. Synthesis of rather simple behaviors such as collision avoidance by applying artificial evolution has been shown multiple times. However, the difficulty of this synthesis increases heavily with increasing complexit... | {
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1011.3970 | From Social Simulation to Integrative System Design | [
"cs.CY",
"cs.CE",
"physics.comp-ph",
"physics.soc-ph"
] | As the recent financial crisis showed, today there is a strong need to gain "ecological perspective" of all relevant interactions in socio-economic-techno-environmental systems. For this, we suggested to set-up a network of Centers for integrative systems design, which shall be able to run all potentially relevant scen... | {
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1011.3985 | Perfect Secrecy Using Compressed Sensing | [
"cs.IT",
"cs.CR",
"math.IT"
] | In this paper we consider the compressed sensing-based encryption and proposed the conditions in which the perfect secrecy is obtained. We prove when the Restricted Isometery Property (RIP) is hold and the number of measurements is more than two times of sparsity level i.e. M \geq 2k, the perfect secrecy condition intr... | {
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1011.4028 | On the approximation ability of evolutionary optimization with
application to minimum set cover | [
"cs.NE"
] | Evolutionary algorithms (EAs) are heuristic algorithms inspired by natural evolution. They are often used to obtain satisficing solutions in practice. In this paper, we investigate a largely underexplored issue: the approximation performance of EAs in terms of how close the solution obtained is to an optimal solution. ... | {
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1011.4058 | Modeling Image Structure with Factorized Phase-Coupled Boltzmann
Machines | [
"cs.CV",
"cond-mat.dis-nn",
"q-bio.NC",
"stat.ML"
] | We describe a model for capturing the statistical structure of local amplitude and local spatial phase in natural images. The model is based on a recently developed, factorized third-order Boltzmann machine that was shown to be effective at capturing higher-order structure in images by modeling dependencies among squar... | {
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1011.4071 | Supervised Random Walks: Predicting and Recommending Links in Social
Networks | [
"cs.SI",
"cs.AI",
"cs.DS",
"physics.soc-ph",
"stat.ML"
] | Predicting the occurrence of links is a fundamental problem in networks. In the link prediction problem we are given a snapshot of a network and would like to infer which interactions among existing members are likely to occur in the near future or which existing interactions are we missing. Although this problem has b... | {
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1011.4098 | Understanding Cascading Failures in Power Grids | [
"cs.SI",
"math.PR",
"stat.AP"
] | In the past, we have observed several large blackouts, i.e. loss of power to large areas. It has been noted by several researchers that these large blackouts are a result of a cascade of failures of various components. As a power grid is made up of several thousands or even millions of components (relays, breakers, tra... | {
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1011.4104 | Clustering and Latent Semantic Indexing Aspects of the Singular Value
Decomposition | [
"cs.LG",
"cs.NA",
"math.SP"
] | This paper discusses clustering and latent semantic indexing (LSI) aspects of the singular value decomposition (SVD). The purpose of this paper is twofold. The first is to give an explanation on how and why the singular vectors can be used in clustering. And the second is to show that the two seemingly unrelated SVD as... | {
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1011.4109 | Design and simulation of a sigma delta ADC | [
"cs.IT",
"cs.AR",
"math.IT"
] | In this report we describe the design and simulation of a Sigma Delta ADC in Matlan/Simulink | {
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1011.4155 | Motifs de graphe pour le calcul de d\'ependances syntaxiques compl\`etes | [
"cs.CL"
] | This article describes a method to build syntactical dependencies starting from the phrase structure parsing process. The goal is to obtain all the information needed for a detailled semantical analysis. Interaction Grammars are used for parsing; the saturation of polarities which is the core of this formalism can be m... | {
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1011.4161 | Community characterization of heterogeneous complex systems | [
"physics.soc-ph",
"cs.SI",
"physics.data-an"
] | We introduce an analytical statistical method to characterize the communities detected in heterogeneous complex systems. By posing a suitable null hypothesis, our method makes use of the hypergeometric distribution to assess the probability that a given property is over-expressed in the elements of a community with res... | {
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1011.4199 | Biologically Inspired Design Principles for Scalable, Robust, Adaptive,
Decentralized Search and Automated Response (RADAR) | [
"cs.NE",
"cs.DC",
"cs.SY",
"math.OC",
"q-bio.QM"
] | Distributed search problems are ubiquitous in Artificial Life (ALife). Many distributed search problems require identifying a rare and previously unseen event and producing a rapid response. This challenge amounts to finding and removing an unknown needle in a very large haystack. Traditional computational search model... | {
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1011.4237 | Variational and symplectic approach of the model-free control | [
"cs.SY",
"math.OC"
] | We propose a theoretical development of the model-free control in order to extend its robustness capabilities. The proposed method is based on the auto-tuning of the model-free controller parameter using an optimal approach. Some examples are discussed to illustrate our approach. | {
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1011.4302 | The Effects of Narrowband Interference on Finite-Resolution IR-UWB
Digital Receiver | [
"cs.IT",
"math.IT"
] | Finite-resolution digital receiver is recently considered as a potential way to Ultra Wide Band (UWB) communication systems due to its ability of mitigating the challenge of Analog-Digital Converter (ADC). In this paper, the effects of narrowband interference (NBI) are investigated when finite-resolution digital receiv... | {
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1011.4321 | A Fuzzy Clustering Model for Fuzzy Data with Outliers | [
"cs.CV"
] | In this paper a fuzzy clustering model for fuzzy data with outliers is proposed. The model is based on Wasserstein distance between interval valued data which is generalized to fuzzy data. In addition, Keller's approach is used to identify outliers and reduce their influences. We have also defined a transformation to c... | {
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1011.4324 | Moment-Based Spectral Analysis of Large-Scale Networks Using Local
Structural Information | [
"cs.SI",
"cs.SY",
"math.DS",
"math.OC",
"physics.data-an",
"physics.soc-ph"
] | The eigenvalues of matrices representing the structure of large-scale complex networks present a wide range of applications, from the analysis of dynamical processes taking place in the network to spectral techniques aiming to rank the importance of nodes in the network. A common approach to study the relationship betw... | {
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1011.4328 | Graphical Models Concepts in Compressed Sensing | [
"cs.IT",
"math.IT"
] | This paper surveys recent work in applying ideas from graphical models and message passing algorithms to solve large scale regularized regression problems. In particular, the focus is on compressed sensing reconstruction via ell_1 penalized least-squares (known as LASSO or BPDN). We discuss how to derive fast approxima... | {
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1011.4362 | Should one compute the Temporal Difference fix point or minimize the
Bellman Residual? The unified oblique projection view | [
"cs.AI"
] | We investigate projection methods, for evaluating a linear approximation of the value function of a policy in a Markov Decision Process context. We consider two popular approaches, the one-step Temporal Difference fix-point computation (TD(0)) and the Bellman Residual (BR) minimization. We describe examples, where each... | {
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1011.4394 | Measuring the Hierarchy of Feedforward Networks | [
"physics.data-an",
"cond-mat.dis-nn",
"cs.SI",
"nlin.AO",
"physics.soc-ph"
] | In this paper we explore the concept of hierarchy as a quantifiable descriptor of ordered structures, departing from the definition of three conditions to be satisfied for a hierarchical structure: {\em order}, {\em predictability} and {\em pyramidal structure}. According to these principles we define a hierarchical in... | {
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1011.4445 | Voter model with non-Poissonian interevent intervals | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | Recent analysis of social communications among humans has revealed that the interval between interactions for a pair of individuals and for an individual often follows a long-tail distribution. We investigate the effect of such a non-Poissonian nature of human behavior on dynamics of opinion formation. We use a variant... | {
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1011.4532 | New Algorithms on Wavelet Trees and Applications to Information
Retrieval | [
"cs.DS",
"cs.IR"
] | Wavelet trees are widely used in the representation of sequences, permutations, text collections, binary relations, discrete points, and other succinct data structures. We show, however, that this still falls short of exploiting all of the virtues of this versatile data structure. In particular we show how to use wavel... | {
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1011.4597 | Energy-Efficient Precoding for Multiple-Antenna Terminals | [
"cs.IT",
"math.IT"
] | The problem of energy-efficient precoding is investigated when the terminals in the system are equipped with multiple antennas. Considering static and fast-fading multiple-input multiple-output (MIMO) channels, the energy-efficiency is defined as the transmission rate to power ratio and shown to be maximized at low tra... | {
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1011.4598 | Power Allocation Games in Wireless Networks of Multi-antenna Terminals | [
"cs.IT",
"math.IT"
] | We consider wireless networks that can be modeled by multiple access channels in which all the terminals are equipped with multiple antennas. The propagation model used to account for the effects of transmit and receive antenna correlations is the unitary-invariant-unitary model, which is one of the most general models... | {
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"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4602 | Gaussian Broadcast Channels with an Orthogonal and Bidirectional
Cooperation Link | [
"cs.IT",
"math.IT"
] | This paper considers a system where one transmitter broadcasts a single common message to two receivers linked by a bidirectional cooperation channel, which is assumed to be orthogonal to the downlink channel. Assuming a simplified setup where, in particular, scalar relaying protocols are used and channel coding is not... | {
"Other": 0,
"cs.AI": 0,
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"cs.SD": 0,
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"cs.SY": 0
} |
1011.4609 | Bounds from a Card Trick | [
"cs.IT",
"math.IT"
] | We describe a new variation of a mathematical card trick, whose analysis leads to new lower bounds for data compression and estimating the entropy of Markov sources. | {
"Other": 0,
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} |
1011.4615 | Generalized Tree-Based Wavelet Transform | [
"cs.CV"
] | In this paper we propose a new wavelet transform applicable to functions defined on graphs, high dimensional data and networks. The proposed method generalizes the Haar-like transform proposed in [1], and it is defined via a hierarchical tree, which is assumed to capture the geometry and structure of the input data. It... | {
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4623 | Opinion Polarity Identification through Adjectives | [
"cs.CL"
] | "What other people think" has always been an important piece of information during various decision-making processes. Today people frequently make their opinions available via the Internet, and as a result, the Web has become an excellent source for gathering consumer opinions. There are now numerous Web resources cont... | {
"Other": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4632 | Random Projections for $k$-means Clustering | [
"cs.AI",
"cs.DS"
] | This paper discusses the topic of dimensionality reduction for $k$-means clustering. We prove that any set of $n$ points in $d$ dimensions (rows in a matrix $A \in \RR^{n \times d}$) can be projected into $t = \Omega(k / \eps^2)$ dimensions, for any $\eps \in (0,1/3)$, in $O(n d \lceil \eps^{-2} k/ \log(d) \rceil )$ ti... | {
"Other": 1,
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"cs.CR": 0,
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"cs.DB": 0,
"cs.HC": 0,
"cs.IR": 0,
"cs.IT": 0,
"cs.LG": 0,
"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4644 | Stochastic blockmodels with growing number of classes | [
"math.ST",
"cs.SI",
"stat.ME",
"stat.ML",
"stat.TH"
] | We present asymptotic and finite-sample results on the use of stochastic blockmodels for the analysis of network data. We show that the fraction of misclassified network nodes converges in probability to zero under maximum likelihood fitting when the number of classes is allowed to grow as the root of the network size ... | {
"Other": 0,
"cs.AI": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 1,
"cs.SY": 0
} |
1011.4682 | Analysis of attractor distances in Random Boolean Networks | [
"cs.NE",
"nlin.CD",
"physics.bio-ph",
"q-bio.QM"
] | We study the properties of the distance between attractors in Random Boolean Networks, a prominent model of genetic regulatory networks. We define three distance measures, upon which attractor distance matrices are constructed and their main statistic parameters are computed. The experimental analysis shows that ordere... | {
"Other": 0,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
"cs.CR": 0,
"cs.CV": 0,
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"cs.HC": 0,
"cs.IR": 0,
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"cs.MA": 0,
"cs.NE": 1,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4725 | Lossy Broadcasting in Two-Way Relay Networks with Common Reconstructions | [
"cs.IT",
"math.IT"
] | The broadcast phase (downlink transmission) of the two-way relay network is studied in the source coding and joint source-channel coding settings. The rates needed for reliable communication are characterised for a number of special cases including: small distortions, deterministic distortion measures, and jointly Gaus... | {
"Other": 0,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4748 | Combinatorial Network Optimization with Unknown Variables: Multi-Armed
Bandits with Linear Rewards | [
"math.OC",
"cs.LG",
"cs.NI",
"math.PR"
] | In the classic multi-armed bandits problem, the goal is to have a policy for dynamically operating arms that each yield stochastic rewards with unknown means. The key metric of interest is regret, defined as the gap between the expected total reward accumulated by an omniscient player that knows the reward means for ea... | {
"Other": 1,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
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"cs.IR": 0,
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"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4752 | The Non-Bayesian Restless Multi-Armed Bandit: a Case of Near-Logarithmic
Regret | [
"math.OC",
"cs.LG",
"cs.NI",
"math.PR"
] | In the classic Bayesian restless multi-armed bandit (RMAB) problem, there are $N$ arms, with rewards on all arms evolving at each time as Markov chains with known parameters. A player seeks to activate $K \geq 1$ arms at each time in order to maximize the expected total reward obtained over multiple plays. RMAB is a ch... | {
"Other": 1,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
"cs.CR": 0,
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"cs.IR": 0,
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"cs.LG": 1,
"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1011.4792 | Pair-wise Markov Random Fields Applied to the Design of Low Complexity
MIMO Detectors | [
"cs.IT",
"math.IT"
] | Pair-wise Markov random fields (MRF) are considered for application to the development of low complexity, iterative MIMO detection. Specifically, we consider two types of MRF, namely, the fully-connected and ring-type. For the edge potentials, we use the bivariate Gaussian function obtained by marginalizing the posteri... | {
"Other": 0,
"cs.AI": 0,
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"cs.IR": 0,
"cs.IT": 1,
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"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
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