id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
0710.3561 | Stationary probability density of stochastic search processes in global
optimization | [
"cs.AI",
"cond-mat.stat-mech",
"cs.NE"
] | A method for the construction of approximate analytical expressions for the stationary marginal densities of general stochastic search processes is proposed. By the marginal densities, regions of the search space that with high probability contain the global optima can be readily defined. The density estimation procedu... | {
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0710.3621 | Numerical removal of water-vapor effects from THz-TDS measurements | [
"cs.CE",
"physics.comp-ph"
] | One source of disturbance in a pulsed T-ray signal is attributed to ambient water vapor. Water molecules in the gas phase selectively absorb T-rays at discrete frequencies corresponding to their molecular rotational transitions. This results in prominent resonances spread over the T-ray spectrum, and in the time domain... | {
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0710.3757 | Inferring the conditional mean | [
"math.PR",
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"math.IT"
] | Consider a stationary real-valued time series $\{X_n\}_{n=0}^{\infty}$ with a priori unknown distribution. The goal is to estimate the conditional expectation $E(X_{n+1}|X_0,..., X_n)$ based on the observations $(X_0,..., X_n)$ in a pointwise consistent way. It is well known that this is not possible at all values of $... | {
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0710.3760 | Guessing the output of a stationary binary time series | [
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"math.IT"
] | The forward prediction problem for a binary time series $\{X_n\}_{n=0}^{\infty}$ is to estimate the probability that $X_{n+1}=1$ based on the observations $X_i$, $0\le i\le n$ without prior knowledge of the distribution of the process $\{X_n\}$. It is known that this is not possible if one estimates at all values of $n... | {
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0710.3773 | Limitations on intermittent forecasting | [
"math.PR",
"cs.IT",
"math.IT"
] | Bailey showed that the general pointwise forecasting for stationary and ergodic time series has a negative solution. However, it is known that for Markov chains the problem can be solved. Morvai showed that there is a stopping time sequence $\{\lambda_n\}$ such that $P(X_{\lambda_n+1}=1|X_0,...,X_{\lambda_n}) $ can be ... | {
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0710.3775 | On classifying processes | [
"math.PR",
"cs.IT",
"math.IT"
] | We prove several results concerning classifications, based on successive observations $(X_1,..., X_n)$ of an unknown stationary and ergodic process, for membership in a given class of processes, such as the class of all finite order Markov chains. | {
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0710.3777 | A Deterministic Approach to Wireless Relay Networks | [
"cs.IT",
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"math.IT",
"math.PR"
] | We present a deterministic channel model which captures several key features of multiuser wireless communication. We consider a model for a wireless network with nodes connected by such deterministic channels, and present an exact characterization of the end-to-end capacity when there is a single source and a single de... | {
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0710.3781 | Wireless Network Information Flow | [
"cs.IT",
"cs.DM",
"math.IT",
"math.PR"
] | We present an achievable rate for general deterministic relay networks, with broadcasting at the transmitters and interference at the receivers. In particular we show that if the optimizing distribution for the information-theoretic cut-set bound is a product distribution, then we have a complete characterization of th... | {
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0710.3802 | A Posteriori Equivalence: A New Perspective for Design of Optimal
Channel Shortening Equalizers | [
"cs.IT",
"math.IT"
] | The problem of channel shortening equalization for optimal detection in ISI channels is considered. The problem is to choose a linear equalizer and a partial response target filter such that the combination produces the best detection performance. Instead of using the traditional approach of MMSE equalization, we direc... | {
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0710.3817 | A Note on Comparison of Error Correction Codes | [
"cs.IT",
"math.IT",
"math.ST",
"stat.TH"
] | Use of an error correction code in a given transmission channel can be regarded as the statistical experiment. Therefore, powerful results from the theory of comparison of experiments can be applied to compare the performances of different error correction codes. We present results on the comparison of block error corr... | {
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0710.3861 | Optimal encoding on discrete lattice with translational invariant
constrains using statistical algorithms | [
"cs.IT",
"math.IT"
] | In this paper will be presented methodology of encoding information in valuations of discrete lattice with some translational invariant constrains in asymptotically optimal way. The method is based on finding statistical description of such valuations and changing it into statistical algorithm, which allows to construc... | {
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0710.3888 | Cooperative Multi-Cell Networks: Impact of Limited-Capacity Backhaul and
Inter-Users Links | [
"cs.IT",
"math.IT"
] | Cooperative technology is expected to have a great impact on the performance of cellular or, more generally, infrastructure networks. Both multicell processing (cooperation among base stations) and relaying (cooperation at the user level) are currently being investigated. In this presentation, recent results regarding ... | {
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0710.3974 | Distributed source coding in dense sensor networks | [
"cs.IT",
"math.IT"
] | We study the problem of the reconstruction of a Gaussian field defined in [0,1] using N sensors deployed at regular intervals. The goal is to quantify the total data rate required for the reconstruction of the field with a given mean square distortion. We consider a class of two-stage mechanisms which a) send informati... | {
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0710.4046 | Bit-interleaved coded modulation in the wideband regime | [
"cs.IT",
"math.IT"
] | The wideband regime of bit-interleaved coded modulation (BICM) in Gaussian channels is studied. The Taylor expansion of the coded modulation capacity for generic signal constellations at low signal-to-noise ratio (SNR) is derived and used to determine the corresponding expansion for the BICM capacity. Simple formulas f... | {
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0710.4051 | On the capacity achieving covariance matrix for Rician MIMO channels: an
asymptotic approach | [
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"cs.IT",
"math.IT"
] | The capacity-achieving input covariance matrices for coherent block-fading correlated MIMO Rician channels are determined. In this case, no closed-form expressions for the eigenvectors of the optimum input covariance matrix are available. An approximation of the average mutual information is evaluated in this paper in ... | {
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0710.4076 | Some information-theoretic computations related to the distribution of
prime numbers | [
"cs.IT",
"math.IT",
"math.NT",
"math.PR"
] | We illustrate how elementary information-theoretic ideas may be employed to provide proofs for well-known, nontrivial results in number theory. Specifically, we give an elementary and fairly short proof of the following asymptotic result: The sum of (log p)/p, taken over all primes p not exceeding n, is asymptotic to l... | {
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0710.4105 | A Note on the Secrecy Capacity of the Multi-antenna Wiretap Channel | [
"cs.IT",
"math.IT"
] | Recently, the secrecy capacity of the multi-antenna wiretap channel was characterized by Khisti and Wornell [1] using a Sato-like argument. This note presents an alternative characterization using a channel enhancement argument. This characterization relies on an extremal entropy inequality recently proved in the conte... | {
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0710.4117 | From the entropy to the statistical structure of spike trains | [
"q-bio.NC",
"cs.IT",
"math.IT",
"math.PR",
"stat.AP"
] | We use statistical estimates of the entropy rate of spike train data in order to make inferences about the underlying structure of the spike train itself. We first examine a number of different parametric and nonparametric estimators (some known and some new), including the ``plug-in'' method, several versions of Lempe... | {
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0710.4180 | A quick search method for audio signals based on a piecewise linear
representation of feature trajectories | [
"cs.MM",
"cs.DB"
] | This paper presents a new method for a quick similarity-based search through long unlabeled audio streams to detect and locate audio clips provided by users. The method involves feature-dimension reduction based on a piecewise linear representation of a sequential feature trajectory extracted from a long audio stream. ... | {
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0710.4182 | Beyond Feedforward Models Trained by Backpropagation: a Practical
Training Tool for a More Efficient Universal Approximator | [
"cs.NE"
] | Cellular Simultaneous Recurrent Neural Network (SRN) has been shown to be a function approximator more powerful than the MLP. This means that the complexity of MLP would be prohibitively large for some problems while SRN could realize the desired mapping with acceptable computational constraints. The speed of training ... | {
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0710.4187 | Universal coding for correlated sources with complementary delivery | [
"cs.IT",
"math.IT"
] | This paper deals with a universal coding problem for a certain kind of multiterminal source coding system that we call the complementary delivery coding system. In this system, messages from two correlated sources are jointly encoded, and each decoder has access to one of the two messages to enable it to reproduce the ... | {
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0710.4231 | Analyzing covert social network foundation behind terrorism disaster | [
"cs.AI"
] | This paper addresses a method to analyze the covert social network foundation hidden behind the terrorism disaster. It is to solve a node discovery problem, which means to discover a node, which functions relevantly in a social network, but escaped from monitoring on the presence and mutual relationship of nodes. The m... | {
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0710.4255 | Analysis of a Mixed Strategy for Multiple Relay Networks | [
"cs.IT",
"math.IT"
] | In their landmark paper Cover and El Gamal proposed different coding strategies for the relay channel with a single relay supporting a communication pair. These strategies are the decode-and-forward and compress-and-forward approach, as well as a general lower bound on the capacity of a relay network which relies on th... | {
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0710.4486 | Non-linear estimation is easy | [
"cs.CE",
"cs.NA",
"cs.PF",
"math.AC",
"math.NA",
"math.OC"
] | Non-linear state estimation and some related topics, like parametric estimation, fault diagnosis, and perturbation attenuation, are tackled here via a new methodology in numerical differentiation. The corresponding basic system theoretic definitions and properties are presented within the framework of differential alge... | {
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0710.4516 | The predictability of letters in written english | [
"physics.soc-ph",
"cs.CL",
"stat.ML"
] | We show that the predictability of letters in written English texts depends strongly on their position in the word. The first letters are usually the least easy to predict. This agrees with the intuitive notion that words are well defined subunits in written languages, with much weaker correlations across these units t... | {
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0710.4680 | Energy Bounds for Fault-Tolerant Nanoscale Designs | [
"cs.CC",
"cs.IT",
"math.IT"
] | The problem of determining lower bounds for the energy cost of a given nanoscale design is addressed via a complexity theory-based approach. This paper provides a theoretical framework that is able to assess the trade-offs existing in nanoscale designs between the amount of redundancy needed for a given level of resili... | {
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0710.4725 | Fault-Trajectory Approach for Fault Diagnosis on Analog Circuits | [
"cs.NE"
] | This issue discusses the fault-trajectory approach suitability for fault diagnosis on analog networks. Recent works have shown promising results concerning a method based on this concept for ATPG for diagnosing faults on analog networks. Such method relies on evolutionary techniques, where a generic algorithm (GA) is c... | {
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0710.4734 | Computational Intelligence Characterization Method of Semiconductor
Device | [
"cs.AI",
"cs.NE"
] | Characterization of semiconductor devices is used to gather as much data about the device as possible to determine weaknesses in design or trends in the manufacturing process. In this paper, we propose a novel multiple trip point characterization concept to overcome the constraint of single trip point concept in device... | {
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0710.4750 | On the Analysis of Reed Solomon Coding for Resilience to
Transient/Permanent Faults in Highly Reliable Memories | [
"cs.IT",
"math.IT"
] | Single Event Upsets (SEU) as well as permanent faults can significantly affect the correct on-line operation of digital systems, such as memories and microprocessors; a memory can be made resilient to permanent and transient faults by using modular redundancy and coding. In this paper, different memory systems are comp... | {
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0710.4780 | Querying XML Documents in Logic Programming | [
"cs.PL",
"cs.DB"
] | Extensible Markup Language (XML) is a simple, very flexible text format derived from SGML. Originally designed to meet the challenges of large-scale electronic publishing, XML is also playing an increasingly important role in the exchange of a wide variety of data on the Web and elsewhere. XPath language is the result ... | {
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0710.4847 | Bayesian sequential change diagnosis | [
"math.PR",
"cs.IT",
"math.IT",
"math.ST",
"stat.TH"
] | Sequential change diagnosis is the joint problem of detection and identification of a sudden and unobservable change in the distribution of a random sequence. In this problem, the common probability law of a sequence of i.i.d. random variables suddenly changes at some disorder time to one of finitely many alternatives.... | {
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0710.4903 | Anonymous Networking amidst Eavesdroppers | [
"cs.IT",
"math.IT"
] | The problem of security against timing based traffic analysis in wireless networks is considered in this work. An analytical measure of anonymity in eavesdropped networks is proposed using the information theoretic concept of equivocation. For a physical layer with orthogonal transmitter directed signaling, scheduling ... | {
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0710.4905 | Distributed Source Coding in the Presence of Byzantine Sensors | [
"cs.IT",
"math.IT"
] | The distributed source coding problem is considered when the sensors, or encoders, are under Byzantine attack; that is, an unknown group of sensors have been reprogrammed by a malicious intruder to undermine the reconstruction at the fusion center. Three different forms of the problem are considered. The first is a var... | {
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0710.4975 | Node discovery problem for a social network | [
"cs.AI"
] | Methods to solve a node discovery problem for a social network are presented. Covert nodes refer to the nodes which are not observable directly. They transmit the influence and affect the resulting collaborative activities among the persons in a social network, but do not appear in the surveillance logs which record th... | {
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0710.4982 | First to Market is not Everything: an Analysis of Preferential
Attachment with Fitness | [
"math.PR",
"cs.SI"
] | In this paper, we provide a rigorous analysis of preferential attachment with fitness, a random graph model introduced by Bianconi and Barabasi. Depending on the shape of the fitness distribution, we observe three distinct phases: a first-mover-advantage phase, a fit-get-richer phase and an innovation-pays-off phase. | {
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0710.4987 | Universal source coding over generalized complementary delivery networks | [
"cs.IT",
"math.IT"
] | This paper deals with a universal coding problem for a certain kind of multiterminal source coding network called a generalized complementary delivery network. In this network, messages from multiple correlated sources are jointly encoded, and each decoder has access to some of the messages to enable it to reproduce th... | {
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0710.5002 | The entropy of keys derived from laser speckle | [
"cs.CR",
"cs.CV"
] | Laser speckle has been proposed in a number of papers as a high-entropy source of unpredictable bits for use in security applications. Bit strings derived from speckle can be used for a variety of security purposes such as identification, authentication, anti-counterfeiting, secure key storage, random number generation... | {
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0710.5116 | Combining haplotypers | [
"cs.LG",
"cs.CE",
"q-bio.QM"
] | Statistically resolving the underlying haplotype pair for a genotype measurement is an important intermediate step in gene mapping studies, and has received much attention recently. Consequently, a variety of methods for this problem have been developed. Different methods employ different statistical models, and thus i... | {
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0710.5144 | Forecasting for stationary binary time series | [
"math.PR",
"cs.IT",
"math.IT"
] | The forecasting problem for a stationary and ergodic binary time series $\{X_n\}_{n=0}^{\infty}$ is to estimate the probability that $X_{n+1}=1$ based on the observations $X_i$, $0\le i\le n$ without prior knowledge of the distribution of the process $\{X_n\}$. It is known that this is not possible if one estimates at ... | {
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0710.5161 | Decomposable Subspaces, Linear Sections of Grassmann Varieties, and
Higher Weights of Grassmann Codes | [
"math.AG",
"cs.IT",
"math.IT"
] | Given a homogeneous component of an exterior algebra, we characterize those subspaces in which every nonzero element is decomposable. In geometric terms, this corresponds to characterizing the projective linear subvarieties of the Grassmann variety with its Plucker embedding. When the base field is finite, we consider ... | {
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0710.5190 | Identifying statistical dependence in genomic sequences via mutual
information estimates | [
"q-bio.GN",
"cs.IT",
"math.IT"
] | Questions of understanding and quantifying the representation and amount of information in organisms have become a central part of biological research, as they potentially hold the key to fundamental advances. In this paper, we demonstrate the use of information-theoretic tools for the task of identifying segments of b... | {
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0710.5194 | Rate-Constrained Wireless Networks with Fading Channels:
Interference-Limited and Noise-Limited Regimes | [
"cs.IT",
"math.IT"
] | A network of $n$ wireless communication links is considered in a Rayleigh fading environment. It is assumed that each link can be active and transmit with a constant power $P$ or remain silent. The objective is to maximize the number of active links such that each active link can transmit with a constant rate $\lambda$... | {
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0710.5230 | Generalized reliability-based syndrome decoding for LDPC codes | [
"cs.IT",
"math.IT"
] | Aiming at bridging the gap between the maximum likelihood decoding (MLD) and the suboptimal iterative decodings for short or medium length LDPC codes, we present a generalized ordered statistic decoding (OSD) in the form of syndrome decoding, to cascade with the belief propagation (BP) or enhanced min-sum decoding. The... | {
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0710.5241 | Connection Between System Parameters and Localization Probability in
Network of Randomly Distributed Nodes | [
"cs.NI",
"cs.DM",
"cs.IT",
"math.IT"
] | This article deals with localization probability in a network of randomly distributed communication nodes contained in a bounded domain. A fraction of the nodes denoted as L-nodes are assumed to have localization information while the rest of the nodes denoted as NL nodes do not. The basic model assumes each node has a... | {
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0710.5333 | Neutrosophic Relational Data Model | [
"cs.DB"
] | In this paper, we present a generalization of the relational data model based on interval neutrosophic set. Our data model is capable of manipulating incomplete as well as inconsistent information. Fuzzy relation or intuitionistic fuzzy relation can only handle incomplete information. Associated with each relation are ... | {
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0710.5340 | Bounds on the Network Coding Capacity for Wireless Random Networks | [
"cs.IT",
"cs.NI",
"math.IT"
] | Recently, it has been shown that the max flow capacity can be achieved in a multicast network using network coding. In this paper, we propose and analyze a more realistic model for wireless random networks. We prove that the capacity of network coding for this model is concentrated around the expected value of its mini... | {
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0710.5376 | Broadcasting Correlated Gaussians | [
"cs.IT",
"math.IT"
] | We consider the transmission of a memoryless bivariate Gaussian source over an average-power-constrained one-to-two Gaussian broadcast channel. The transmitter observes the source and describes it to the two receivers by means of an average-power-constrained signal. Each receiver observes the transmitted signal corrupt... | {
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0710.5382 | Some Reflections on the Task of Content Determination in the Context of
Multi-Document Summarization of Evolving Events | [
"cs.CL"
] | Despite its importance, the task of summarizing evolving events has received small attention by researchers in the field of multi-document summariztion. In a previous paper (Afantenos et al. 2007) we have presented a methodology for the automatic summarization of documents, emitted by multiple sources, which describe t... | {
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0710.5386 | Acquisition of Information is Achieved by the Measurement Process in
Classical and Quantum Physics | [
"quant-ph",
"cs.IT",
"hep-th",
"math.IT"
] | No consensus seems to exist as to what constitutes a measurement which is still considered somewhat mysterious in many respects in quantum mechanics. At successive stages mathematical theory of measure, metrology and measurement theory tried to systematize this field but significant questions remain open about the natu... | {
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0710.5501 | Discriminated Belief Propagation | [
"cs.IT",
"cs.AI",
"math.IT"
] | Near optimal decoding of good error control codes is generally a difficult task. However, for a certain type of (sufficiently) good codes an efficient decoding algorithm with near optimal performance exists. These codes are defined via a combination of constituent codes with low complexity trellis representations. Thei... | {
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0710.5512 | Risk Minimization and Optimal Derivative Design in a Principal Agent
Game | [
"cs.CE"
] | We consider the problem of Adverse Selection and optimal derivative design within a Principal-Agent framework. The principal's income is exposed to non-hedgeable risk factors arising, for instance, from weather or climate phenomena. She evaluates her risk using a coherent and law invariant risk measure and tries minimi... | {
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0710.5547 | Code Similarity on High Level Programs | [
"cs.CV",
"cs.DS"
] | This paper presents a new approach for code similarity on High Level programs. Our technique is based on Fast Dynamic Time Warping, that builds a warp path or points relation with local restrictions. The source code is represented into Time Series using the operators inside programming languages that makes possible the... | {
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0710.5640 | LDPC-Based Iterative Algorithm for Compression of Correlated Sources at
Rates Approaching the Slepian-Wolf Bound | [
"cs.IT",
"math.IT"
] | This article proposes a novel iterative algorithm based on Low Density Parity Check (LDPC) codes for compression of correlated sources at rates approaching the Slepian-Wolf bound. The setup considered in the article looks at the problem of compressing one source at a rate determined based on the knowledge of the mean s... | {
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0710.5666 | The Entropy Photon-Number Inequality and its Consequences | [
"quant-ph",
"cs.IT",
"math.IT"
] | Determining the ultimate classical information carrying capacity of electromagnetic waves requires quantum-mechanical analysis to properly account for the bosonic nature of these waves. Recent work has established capacity theorems for bosonic single-user, broadcast, and wiretap channels, under the presumption of two m... | {
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0710.5758 | Grassmannian Beamforming for MIMO Amplify-and-Forward Relaying | [
"cs.IT",
"math.IT"
] | In this paper, we derive the optimal transmitter/ receiver beamforming vectors and relay weighting matrix for the multiple-input multiple-output amplify-and-forward relay channel. The analysis is accomplished in two steps. In the first step, the direct link between the transmitter (Tx) and receiver (Rx) is ignored and ... | {
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0710.5893 | Codes from Zero-divisors and Units in Group Rings | [
"cs.IT",
"math.IT"
] | We describe and present a new construction method for codes using encodings from group rings. They consist primarily of two types: zero-divisor and unit-derived codes. Previous codes from group rings focused on ideals; for example cyclic codes are ideals in the group ring over a cyclic group. The fresh focus is on the ... | {
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0711.0189 | A Tutorial on Spectral Clustering | [
"cs.DS",
"cs.LG"
] | In recent years, spectral clustering has become one of the most popular modern clustering algorithms. It is simple to implement, can be solved efficiently by standard linear algebra software, and very often outperforms traditional clustering algorithms such as the k-means algorithm. On the first glance spectral cluster... | {
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0711.0237 | Zero-rate feedback can achieve the empirical capacity | [
"cs.IT",
"math.IT"
] | The utility of limited feedback for coding over an individual sequence of DMCs is investigated. This study complements recent results showing how limited or noisy feedback can boost the reliability of communication. A strategy with fixed input distribution $P$ is given that asymptotically achieves rates arbitrarily clo... | {
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0711.0261 | Gradient Descent Bit Flipping Algorithms for Decoding LDPC Codes | [
"cs.IT",
"math.IT"
] | A novel class of bit-flipping (BF) algorithms for decoding low-density parity-check (LDPC) codes is presented. The proposed algorithms, which are called gradient descent bit flipping (GDBF) algorithms, can be regarded as simplified gradient descent algorithms. Based on gradient descent formulation, the proposed algorit... | {
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0711.0277 | Bandwidth Partitioning in Decentralized Wireless Networks | [
"cs.IT",
"math.IT"
] | This paper addresses the following question, which is of interest in the design of a multiuser decentralized network. Given a total system bandwidth of W Hz and a fixed data rate constraint of R bps for each transmission, how many frequency slots N of size W/N should the band be partitioned into in order to maximize th... | {
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0711.0350 | Intermittent estimation of stationary time series | [
"math.PR",
"cs.IT",
"math.IT"
] | Let $\{X_n\}_{n=0}^{\infty}$ be a stationary real-valued time series with unknown distribution. Our goal is to estimate the conditional expectation of $X_{n+1}$ based on the observations $X_i$, $0\le i\le n$ in a strongly consistent way. Bailey and Ryabko proved that this is not possible even for ergodic binary time se... | {
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0711.0351 | Noise threshold for universality of 2-input gates | [
"cs.IT",
"cs.CC",
"math.IT"
] | Evans and Pippenger showed in 1998 that noisy gates with 2 inputs are universal for arbitrary computation (i.e. can compute any function with bounded error), if all gates fail independently with probability epsilon and epsilon<theta, where theta is roughly 8.856%. We show that formulas built from gates with 2 inputs,... | {
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0711.0366 | Shannon Theoretic Limits on Noisy Compressive Sampling | [
"cs.IT",
"math.IT"
] | In this paper, we study the number of measurements required to recover a sparse signal in ${\mathbb C}^M$ with $L$ non-zero coefficients from compressed samples in the presence of noise. For a number of different recovery criteria, we prove that $O(L)$ (an asymptotically linear multiple of $L$) measurements are necessa... | {
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0711.0367 | Nonparametric inference for ergodic, stationary time series | [
"math.PR",
"cs.IT",
"math.IT"
] | The setting is a stationary, ergodic time series. The challenge is to construct a sequence of functions, each based on only finite segments of the past, which together provide a strongly consistent estimator for the conditional probability of the next observation, given the infinite past. Ornstein gave such a construct... | {
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0711.0471 | Prediction for discrete time series | [
"math.PR",
"cs.IT",
"math.IT"
] | Let $\{X_n\}$ be a stationary and ergodic time series taking values from a finite or countably infinite set ${\cal X}$. Assume that the distribution of the process is otherwise unknown. We propose a sequence of stopping times $\lambda_n$ along which we will be able to estimate the conditional probability $P(X_{\lambda_... | {
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0711.0472 | Order estimation of Markov chains | [
"math.PR",
"cs.IT",
"math.IT"
] | We describe estimators $\chi_n(X_0,X_1,...,X_n)$, which when applied to an unknown stationary process taking values from a countable alphabet ${\cal X}$, converge almost surely to $k$ in case the process is a $k$-th order Markov chain and to infinity otherwise. | {
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0711.0557 | Kerdock Codes for Limited Feedback Precoded MIMO Systems | [
"cs.IT",
"math.IT"
] | A codebook based limited feedback strategy is a practical way to obtain partial channel state information at the transmitter in a precoded multiple-input multiple-output (MIMO) wireless system. Conventional codebook designs use Grassmannian packing, equiangular frames, vector quantization, or Fourier based construction... | {
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0711.0574 | Singular Curves in the Joint Space and Cusp Points of 3-RPR parallel
manipulators | [
"cs.RO"
] | This paper investigates the singular curves in the joint space of a family of planar parallel manipulators. It focuses on special points, referred to as cusp points, which may appear on these curves. Cusp points play an important role in the kinematic behavior of parallel manipulators since they make possible a nonsing... | {
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0711.0666 | Discriminative Phoneme Sequences Extraction for Non-Native Speaker's
Origin Classification | [
"cs.CL"
] | In this paper we present an automated method for the classification of the origin of non-native speakers. The origin of non-native speakers could be identified by a human listener based on the detection of typical pronunciations for each nationality. Thus we suppose the existence of several phoneme sequences that might... | {
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0711.0694 | Performance Bounds for Lambda Policy Iteration and Application to the
Game of Tetris | [
"cs.AI",
"cs.RO"
] | We consider the discrete-time infinite-horizon optimal control problem formalized by Markov Decision Processes. We revisit the work of Bertsekas and Ioffe, that introduced $\lambda$ Policy Iteration, a family of algorithms parameterized by $\lambda$ that generalizes the standard algorithms Value Iteration and Policy It... | {
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0711.0705 | Feedback Capacity of the Compound Channel | [
"cs.IT",
"math.IT"
] | In this work we find the capacity of a compound finite-state channel with time-invariant deterministic feedback. The model we consider involves the use of fixed length block codes. Our achievability result includes a proof of the existence of a universal decoder for the family of finite-state channels with feedback. As... | {
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0711.0708 | A Rank-Metric Approach to Error Control in Random Network Coding | [
"cs.IT",
"math.IT"
] | The problem of error control in random linear network coding is addressed from a matrix perspective that is closely related to the subspace perspective of K\"otter and Kschischang. A large class of constant-dimension subspace codes is investigated. It is shown that codes in this class can be easily constructed from ran... | {
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0711.0711 | Information-Theoretic Security in Wireless Networks | [
"cs.IT",
"cs.CR",
"math.IT"
] | This paper summarizes recent contributions of the authors and their co-workers in the area of information-theoretic security. | {
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0711.0784 | Addendum to Research MMMCV; A Man/Microbio/Megabio/Computer Vision | [
"cs.CV",
"cs.CE"
] | In October 2007, a Research Proposal for the University of Sydney, Australia, the author suggested that biovie-physical phenomenon as `electrodynamic dependant biological vision', is governed by relativistic quantum laws and biovision. The phenomenon on the basis of `biovielectroluminescence', satisfies man/microbio/me... | {
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0711.0811 | Combined Acoustic and Pronunciation Modelling for Non-Native Speech
Recognition | [
"cs.CL"
] | In this paper, we present several adaptation methods for non-native speech recognition. We have tested pronunciation modelling, MLLR and MAP non-native pronunciation adaptation and HMM models retraining on the HIWIRE foreign accented English speech database. The ``phonetic confusion'' scheme we have developed consists ... | {
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0711.1038 | Am\'elioration des Performances des Syst\`emes Automatiques de
Reconnaissance de la Parole pour la Parole Non Native | [
"cs.CL"
] | In this article, we present an approach for non native automatic speech recognition (ASR). We propose two methods to adapt existing ASR systems to the non-native accents. The first method is based on the modification of acoustic models through integration of acoustic models from the mother tong. The phonemes of the tar... | {
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0711.1056 | Bounds on the Number of Iterations for Turbo-Like Ensembles over the
Binary Erasure Channe | [
"cs.IT",
"math.IT"
] | This paper provides simple lower bounds on the number of iterations which is required for successful message-passing decoding of some important families of graph-based code ensembles (including low-density parity-check codes and variations of repeat-accumulate codes). The transmission of the code ensembles is assumed t... | {
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0711.1161 | Joint Source-Channel Codes for MIMO Block Fading Channels | [
"cs.IT",
"math.IT"
] | We consider transmission of a continuous amplitude source over an L-block Rayleigh fading $M_t \times M_r$ MIMO channel when the channel state information is only available at the receiver. Since the channel is not ergodic, Shannon's source-channel separation theorem becomes obsolete and the optimal performance require... | {
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0711.1295 | On the performance of Golden space-time trellis coded modulation over
MIMO block fading channels | [
"cs.IT",
"math.IT"
] | The Golden space-time trellis coded modulation (GST-TCM) scheme was proposed in \cite{Hong06} for a high rate $2\times 2$ multiple-input multiple-output (MIMO) system over slow fading channels. In this letter, we present the performance analysis of GST-TCM over block fading channels, where the channel matrix is constan... | {
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0711.1360 | Analytical approach to bit-string models of language evolution | [
"physics.soc-ph",
"cs.CL"
] | A formulation of bit-string models of language evolution, based on differential equations for the population speaking each language, is introduced and preliminarily studied. Connections with replicator dynamics and diffusion processes are pointed out. The stability of the dominance state, where most of the population s... | {
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0711.1383 | On Minimal Tree Realizations of Linear Codes | [
"cs.IT",
"math.IT"
] | A tree decomposition of the coordinates of a code is a mapping from the coordinate set to the set of vertices of a tree. A tree decomposition can be extended to a tree realization, i.e., a cycle-free realization of the code on the underlying tree, by specifying a state space at each edge of the tree, and a local constr... | {
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0711.1401 | Towards a Sound Theory of Adaptation for the Simple Genetic Algorithm | [
"cs.NE",
"cs.AI"
] | The pace of progress in the fields of Evolutionary Computation and Machine Learning is currently limited -- in the former field, by the improbability of making advantageous extensions to evolutionary algorithms when their capacity for adaptation is poorly understood, and in the latter by the difficulty of finding effec... | {
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0711.1466 | Predicting relevant empty spots in social interaction | [
"cs.AI"
] | An empty spot refers to an empty hard-to-fill space which can be found in the records of the social interaction, and is the clue to the persons in the underlying social network who do not appear in the records. This contribution addresses a problem to predict relevant empty spots in social interaction. Homogeneous and ... | {
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0711.1478 | A constructive Borel-Cantelli Lemma. Constructing orbits with required
statistical properties | [
"math.CA",
"cs.IT",
"math.DS",
"math.IT",
"math.PR",
"math.ST",
"stat.TH"
] | In the general context of computable metric spaces and computable measures we prove a kind of constructive Borel-Cantelli lemma: given a sequence (constructive in some way) of sets $A_{i}$ with effectively summable measures, there are computable points which are not contained in infinitely many $A_{i}$. As a conseque... | {
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0711.1565 | Channel Code Design with Causal Side Information at the Encoder | [
"cs.IT",
"math.IT"
] | The problem of channel code design for the $M$-ary input AWGN channel with additive $Q$-ary interference where the sequence of i.i.d. interference symbols is known causally at the encoder is considered. The code design criterion at high SNR is derived by defining a new distance measure between the input symbols of the ... | {
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0711.1573 | Outage-Efficient Downlink Transmission Without Transmit Channel State
Information | [
"cs.IT",
"math.IT"
] | This paper investigates downlink transmission over a quasi-static fading Gaussian broadcast channel (BC), to model delay-sensitive applications over slowly time-varying fading channels. System performance is characterized by outage achievable rate regions. In contrast to most previous work, here the problem is studied ... | {
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0711.1605 | Asymptotic Capacity of Wireless Ad Hoc Networks with Realistic Links
under a Honey Comb Topology | [
"cs.IT",
"math.IT"
] | We consider the effects of Rayleigh fading and lognormal shadowing in the physical interference model for all the successful transmissions of traffic across the network. New bounds are derived for the capacity of a given random ad hoc wireless network that reflect packet drop or capture probability of the transmission ... | {
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0711.1765 | Kinematic calibration of orthoglide-type mechanisms | [
"cs.RO"
] | The paper proposes a novel calibration approach for the Orthoglide-type mechanisms based on observations of the manipulator leg parallelism during mo-tions between the prespecified test postures. It employs a low-cost measuring system composed of standard comparator indicators attached to the universal magnetic stands.... | {
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0711.1766 | Achieving the Gaussian Rate-Distortion Function by Prediction | [
"cs.IT",
"math.IT"
] | The "water-filling" solution for the quadratic rate-distortion function of a stationary Gaussian source is given in terms of its power spectrum. This formula naturally lends itself to a frequency domain "test-channel" realization. We provide an alternative time-domain realization for the rate-distortion function, based... | {
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0711.1814 | Building Rules on Top of Ontologies for the Semantic Web with Inductive
Logic Programming | [
"cs.AI",
"cs.LG"
] | Building rules on top of ontologies is the ultimate goal of the logical layer of the Semantic Web. To this aim an ad-hoc mark-up language for this layer is currently under discussion. It is intended to follow the tradition of hybrid knowledge representation and reasoning systems such as $\mathcal{AL}$-log that integrat... | {
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0711.1890 | A Geometric Interpretation of Fading in Wireless Networks: Theory and
Applications | [
"cs.IT",
"math.IT"
] | In wireless networks with random node distribution, the underlying point process model and the channel fading process are usually considered separately. A unified framework is introduced that permits the geometric characterization of fading by incorporating the fading process into the point process model. Concretely, a... | {
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} |
0711.1986 | Performance bounds and codes design criteria for channel decoding with
a-priori information | [
"cs.IT",
"math.IT"
] | In this article we focus on the problem of channel decoding in presence of a-priori information. In particular, assuming that the a-priori information reliability is not perfectly estimated at the receiver, we derive a novel analytical framework for evaluating the decoder's performance. It is derived the important resu... | {
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} |
0711.2023 | Empirical Evaluation of Four Tensor Decomposition Algorithms | [
"cs.LG",
"cs.CL",
"cs.IR"
] | Higher-order tensor decompositions are analogous to the familiar Singular Value Decomposition (SVD), but they transcend the limitations of matrices (second-order tensors). SVD is a powerful tool that has achieved impressive results in information retrieval, collaborative filtering, computational linguistics, computatio... | {
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} |
0711.2050 | Two Families of Quantum Codes Derived from Cyclic Codes | [
"cs.IT",
"math.IT"
] | We characterize the affine-invariant maximal extended cyclic codes. Then by the CSS construction, we derive from these codes a family of pure quantum codes. Also for ordnq even, a new family of degenerate quantum stabilizer codes is derived from the classical duadic codes. This answer an open problem asked by Aly et al... | {
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} |
0711.2058 | Computer Model of a "Sense of Humour". I. General Algorithm | [
"q-bio.NC",
"cs.AI"
] | A computer model of a "sense of humour" is proposed. The humorous effect is interpreted as a specific malfunction in the course of information processing due to the need for the rapid deletion of the false version transmitted into consciousness. The biological function of a sense of humour consists in speeding up the b... | {
"Other": 0,
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} |
0711.2061 | Computer Model of a "Sense of Humour". II. Realization in Neural
Networks | [
"q-bio.NC",
"cs.AI"
] | The computer realization of a "sense of humour" requires the creation of an algorithm for solving the "linguistic problem", i.e. the problem of recognizing a continuous sequence of polysemantic images. Such algorithm may be realized in the Hopfield model of a neural network after its proper modification. | {
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} |
0711.2087 | Query Evaluation and Optimization in the Semantic Web | [
"cs.DB",
"cs.LO"
] | We address the problem of answering Web ontology queries efficiently. An ontology is formalized as a Deductive Ontology Base (DOB), a deductive database that comprises the ontology's inference axioms and facts. A cost-based query optimization technique for DOB is presented. A hybrid cost model is proposed to estimate t... | {
"Other": 1,
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} |
0711.2102 | Patterns of i.i.d. Sequences and Their Entropy - Part II: Bounds for
Some Distributions | [
"cs.IT",
"math.IT"
] | A pattern of a sequence is a sequence of integer indices with each index describing the order of first occurrence of the respective symbol in the original sequence. In a recent paper, tight general bounds on the block entropy of patterns of sequences generated by independent and identically distributed (i.i.d.) sources... | {
"Other": 0,
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} |
0711.2104 | On the Information Rates of the Plenoptic Function | [
"cs.IT",
"cs.CV",
"math.IT",
"math.PR"
] | The {\it plenoptic function} (Adelson and Bergen, 91) describes the visual information available to an observer at any point in space and time. Samples of the plenoptic function (POF) are seen in video and in general visual content, and represent large amounts of information. In this paper we propose a stochastic model... | {
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} |
0711.2116 | A numerical approach for 3D manufacturing tolerances synthesis | [
"cs.CE"
] | Making a product conform to the functional requirements indicated by the customer suppose to be able to manage the manufacturing process chosen to realise the parts. A simulation step is generally performed to verify that the expected generated deviations fit with these requirements. It is then necessary to assess the ... | {
"Other": 0,
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} |
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