id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1005.5412 | On Cooperative Beamforming Based on Second-Order Statistics of Channel
State Information | [
"cs.IT",
"math.IT"
] | Cooperative beamforming in relay networks is considered, in which a source transmits to its destination with the help of a set of cooperating nodes. The source first transmits locally. The cooperating nodes that receive the source signal retransmit a weighted version of it in an amplify-and-forward (AF) fashion. Assumi... | {
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1005.5432 | Attribute oriented induction with star schema | [
"cs.DB"
] | This paper will propose a novel star schema attribute induction as a new attribute induction paradigm and as improving from current attribute oriented induction. A novel star schema attribute induction will be examined with current attribute oriented induction based on characteristic rule and using non rule based conce... | {
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1005.5433 | A Data Warehouse Assistant Design System Based on Clover Model | [
"cs.DB"
] | Nowadays, Data Warehouse (DW) plays a crucial role in the process of decision making. However, their design remains a very delicate and difficult task either for expert or users. The goal of this paper is to propose a new approach based on the clover model, destined to assist users to design a DW. The proposed approach... | {
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1005.5434 | Efficient Support Coupled Frequent Pattern Mining Over Progressive
Databases | [
"cs.DB"
] | There have been many recent studies on sequential pattern mining. The sequential pattern mining on progressive databases is relatively very new, in which we progressively discover the sequential patterns in period of interest. Period of interest is a sliding window continuously advancing as the time goes by. As the foc... | {
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1005.5437 | Content Based Image Retrieval Using Exact Legendre Moments and Support
Vector Machine | [
"cs.CV"
] | Content Based Image Retrieval (CBIR) systems based on shape using invariant image moments, viz., Moment Invariants (MI) and Zernike Moments (ZM) are available in the literature. MI and ZM are good at representing the shape features of an image. However, non-orthogonality of MI and poor reconstruction of ZM restrict the... | {
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1005.5438 | Query Routing and Processing in Peer-To-Peer Data Sharing Systems | [
"cs.DB"
] | Sharing musical files via the Internet was the essential motivation of early P2P systems. Despite of the great success of the P2P file sharing systems, these systems support only "simple" queries. The focus in such systems is how to carry out an efficient query routing in order to find the nodes storing a desired file.... | {
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1005.5439 | Detection of Bleeding in Wireless Capsule Endoscopy Images Using Range
Ratio Color | [
"cs.CV"
] | Wireless Capsule Endoscopy (WCE) is device to detect abnormalities in colon,esophagus,small intestinal and stomach, to distinguish bleeding in WCE images from non bleeding is a hard job by human reviewing and very time consuming. Consequently, automation for classifying bleeding frames not only will expedite the proces... | {
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1005.5448 | Failover in cellular automata | [
"cs.AI",
"nlin.CG"
] | A cellular automata (CA) configuration is constructed that exhibits emergent failover. The configuration is based on standard Game of Life rules. Gliders and glider-guns form the core messaging structure in the configuration. The blinker is represented as the basic computational unit, and it is shown how it can be recr... | {
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1005.5462 | On the clustering aspect of nonnegative matrix factorization | [
"cs.LG"
] | This paper provides a theoretical explanation on the clustering aspect of nonnegative matrix factorization (NMF). We prove that even without imposing orthogonality nor sparsity constraint on the basis and/or coefficient matrix, NMF still can give clustering results, thus providing a theoretical support for many works, ... | {
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1005.5466 | Quantitative parametrization of texts written by Ivan Franko: An attempt
of the project | [
"cs.CL"
] | In the article, the project of quantitative parametrization of all texts by Ivan Franko is manifested. It can be made only by using modern computer techniques after the frequency dictionaries for all Franko's works are compiled. The paper describes the application spheres, methodology, stages, principles and peculiarit... | {
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1005.5514 | Managing Semantic Loss during Query Reformulation in Peer Data
Management Systems | [
"cs.DB"
] | In this paper we deal with the notion of semantic loss in Peer Data Management Systems (PDMS) queries. We define such a notion and we give a mechanism that discovers semantic loss in a PDMS network. Next, we propose an algorithm that addresses the problem of restoring such a loss. Further evaluation of our proposed alg... | {
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1005.5516 | On the Fly Query Entity Decomposition Using Snippets | [
"cs.IR"
] | One of the most important issues in Information Retrieval is inferring the intents underlying users' queries. Thus, any tool to enrich or to better contextualized queries can proof extremely valuable. Entity extraction, provided it is done fast, can be one of such tools. Such techniques usually rely on a prior training... | {
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1005.5543 | Provenance Views for Module Privacy | [
"cs.DB",
"cs.DS"
] | Scientific workflow systems increasingly store provenance information about the module executions used to produce a data item, as well as the parameter settings and intermediate data items passed between module executions. However, authors/owners of workflows may wish to keep some of this information confidential. In p... | {
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1005.5556 | Empirical learning aided by weak domain knowledge in the form of feature
importance | [
"cs.LG",
"cs.AI",
"cs.NE"
] | Standard hybrid learners that use domain knowledge require stronger knowledge that is hard and expensive to acquire. However, weaker domain knowledge can benefit from prior knowledge while being cost effective. Weak knowledge in the form of feature relative importance (FRI) is presented and explained. Feature relative ... | {
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1005.5574 | Robust Beamforming for Amplify-and-Forward MIMO Relay Systems Based on
Quadratic Matrix Programming | [
"cs.IT",
"math.IT"
] | In this paper, robust transceiver design based on minimum-mean-square-error (MMSE) criterion for dual-hop amplify-and-forward MIMO relay systems is investigated. The channel estimation errors are modeled as Gaussian random variables, and then the effect are incorporated into the robust transceiver based on the Bayesian... | {
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1005.5577 | Transceiver Design for Dual-Hop Non-regenerative MIMO-OFDM Relay Systems
Under Channel Uncertainties | [
"cs.IT",
"math.IT"
] | In this paper, linear transceiver design for dual-hop non-regenerative (amplify-and-forward (AF)) MIMO-OFDM systems under channel estimation errors is investigated. Second order moments of channel estimation errors in the two hops are first deduced. Then based on the Bayesian framework, joint design of linear forwardin... | {
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1005.5581 | Multi-View Active Learning in the Non-Realizable Case | [
"cs.LG"
] | The sample complexity of active learning under the realizability assumption has been well-studied. The realizability assumption, however, rarely holds in practice. In this paper, we theoretically characterize the sample complexity of active learning in the non-realizable case under multi-view setting. We prove that, wi... | {
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1005.5582 | A First-order Augmented Lagrangian Method for Compressed Sensing | [
"math.OC",
"cs.SY"
] | We propose a first-order augmented Lagrangian algorithm (FAL) for solving the basis pursuit problem. FAL computes a solution to this problem by inexactly solving a sequence of L1-regularized least squares sub-problems. These sub-problems are solved using an infinite memory proximal gradient algorithm wherein each updat... | {
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1005.5591 | On the minimum weight problem of permutation codes under Chebyshev
distance | [
"cs.IT",
"math.IT"
] | Permutation codes of length $n$ and distance $d$ is a set of permutations on $n$ symbols, where the distance between any two elements in the set is at least $d$. Subgroup permutation codes are permutation codes with the property that the elements are closed under the operation of composition. In this paper, under the d... | {
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1005.5596 | A generic tool to generate a lexicon for NLP from Lexicon-Grammar tables | [
"cs.CL"
] | Lexicon-Grammar tables constitute a large-coverage syntactic lexicon but they cannot be directly used in Natural Language Processing (NLP) applications because they sometimes rely on implicit information. In this paper, we introduce LGExtract, a generic tool for generating a syntactic lexicon for NLP from the Lexicon-G... | {
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1005.5603 | On the Relation between Realizable and Nonrealizable Cases of the
Sequence Prediction Problem | [
"cs.LG",
"cs.IT",
"math.IT",
"math.ST",
"stat.TH"
] | A sequence $x_1,\dots,x_n,\dots$ of discrete-valued observations is generated according to some unknown probabilistic law (measure) $\mu$. After observing each outcome, one is required to give conditional probabilities of the next observation. The realizable case is when the measure $\mu$ belongs to an arbitrary but kn... | {
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1005.5638 | Distributed source identification for wave equations: an observer-based
approach (full paper) | [
"math.OC",
"cs.SY",
"math.AP"
] | In this paper, we consider the 1D wave equation where the spatial domain is a bounded interval. Assuming the initial conditions to be known, we are here interested in identifying an unknown source term, while we take the Neumann derivative of the solution on one of the boundaries as the measurement output. Applying a b... | {
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1005.5697 | Unbiased Estimation of a Sparse Vector in White Gaussian Noise | [
"math.ST",
"cs.IT",
"math.IT",
"stat.TH"
] | We consider unbiased estimation of a sparse nonrandom vector corrupted by additive white Gaussian noise. We show that while there are infinitely many unbiased estimators for this problem, none of them has uniformly minimum variance. Therefore, we focus on locally minimum variance unbiased (LMVU) estimators. We derive s... | {
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1005.5718 | Agent-based Social Psychology: from Neurocognitive Processes to Social
Data | [
"physics.soc-ph",
"cs.SI",
"q-bio.NC"
] | Moral Foundation Theory states that groups of different observers may rely on partially dissimilar sets of moral foundations, thereby reaching different moral valuations. The use of functional imaging techniques has revealed a spectrum of cognitive styles with respect to the differential handling of novel or corroborat... | {
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1005.5732 | A New Framework for Join Product Skew | [
"cs.DB"
] | Different types of data skew can result in load imbalance in the context of parallel joins under the shared nothing architecture. We study one important type of skew, join product skew (JPS). A static approach based on frequency classes is proposed which takes for granted the data distribution of join attribute values.... | {
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1005.5734 | The Re-Encoding Transformation in Algebraic List-Decoding of
Reed-Solomon Codes | [
"cs.IT",
"math.IT"
] | The main computational steps in algebraic soft-decoding, as well as Sudan-type list-decoding, of Reed-Solomon codes are bivariate polynomial interpolation and factorization. We introduce a computational technique, based upon re-encoding and coordinate transformation, that significantly reduces the complexity of the biv... | {
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1006.0051 | Image Characterization and Classification by Physical Complexity | [
"cs.CC",
"cs.IT",
"math.IT"
] | We present a method for estimating the complexity of an image based on Bennett's concept of logical depth. Bennett identified logical depth as the appropriate measure of organized complexity, and hence as being better suited to the evaluation of the complexity of objects in the physical world. Its use results in a diff... | {
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1006.0054 | Anti-measurement Matrix Uncertainty Sparse Signal Recovery for
Compressive Sensing | [
"cs.IT",
"math.IT",
"math.NA",
"stat.AP"
] | Compressive sensing (CS) is a technique for estimating a sparse signal from the random measurements and the measurement matrix. Traditional sparse signal recovery methods have seriously degeneration with the measurement matrix uncertainty (MMU). Here the MMU is modeled as a bounded additive error. An anti-uncertainty c... | {
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1006.0056 | Inter-atom Interference Mitigation for Sparse Signal Reconstruction
Using Semi-blindly Weighted Minimum Variance Distortionless Response | [
"cs.IT",
"math.IT",
"math.NA"
] | The feasibility of sparse signal reconstruction depends heavily on the inter-atom interference of redundant dictionary. In this paper, a semi-blindly weighted minimum variance distortionless response (SBWMVDR) is proposed to mitigate the inter-atom interference. Examples of direction of arrival estimation are presented... | {
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1006.0109 | Results on Binary Linear Codes With Minimum Distance 8 and 10 | [
"cs.IT",
"math.IT"
] | All codes with minimum distance 8 and codimension up to 14 and all codes with minimum distance 10 and codimension up to 18 are classified. Nonexistence of codes with parameters [33,18,8] and [33,14,10] is proved. This leads to 8 new exact bounds for binary linear codes. Primarily two algorithms considering the dual cod... | {
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1006.0153 | Ivan Franko's novel Dlja domashnjoho ohnyshcha (For the Hearth) in the
light of the frequency dictionary | [
"cs.CL"
] | In the article, the methodology and the principles of the compilation of the Frequency dictionary for Ivan Franko's novel Dlja domashnjoho ohnyshcha (For the Hearth) are described. The following statistical parameters of the novel vocabulary are obtained: variety, exclusiveness, concentration indexes, correlation betwe... | {
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1006.0168 | Perfusion Linearity and Its Applications | [
"cs.CE"
] | Perfusion analysis computes blood flow parameters (blood volume, blood flow, mean transit time) from the observed flow of contrast agent, passing through the patient's vascular system. Perfusion deconvolution has been widely accepted as the principal numerical tool for perfusion analysis, and is used routinely in clini... | {
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1006.0170 | A Fast Generalized Minimum Distance Decoder for Reed-Solomon Codes Based
on the Extended Euclidean Algorithm | [
"cs.IT",
"math.IT"
] | This paper presents a method to determine a set of basis polynomials from the extended Euclidean algorithm that allows Generalized Minimum Distance decoding of Reed-Solomon codes with a complexity of O(nd). | {
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1006.0234 | Inferring Networks of Diffusion and Influence | [
"cs.DS",
"cs.SI",
"physics.soc-ph",
"stat.ML"
] | Information diffusion and virus propagation are fundamental processes taking place in networks. While it is often possible to directly observe when nodes become infected with a virus or adopt the information, observing individual transmissions (i.e., who infects whom, or who influences whom) is typically very difficult... | {
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1006.0245 | Improved compression of network coding vectors using erasure decoding
and list decoding | [
"cs.IT",
"math.IT"
] | Practical random network coding based schemes for multicast include a header in each packet that records the transformation between the sources and the terminal. The header introduces an overhead that can be significant in certain scenarios. In previous work, parity check matrices of error control codes along with erro... | {
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1006.0259 | Methods for the Reconstruction of Parallel Turbo Codes | [
"cs.IT",
"math.IT"
] | We present two new algorithms for the reconstruction of turbo codes from a noisy intercepted bitstream. With these algorithms, we were able to reconstruct various turbo codes with realistic parameter sizes. To the best of our knowledge, these are the first algorithms able to recover the whole permutation of a turbo cod... | {
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1006.0271 | The Quality of Oscillations in Overdamped Networks | [
"cond-mat.stat-mech",
"cs.SI",
"math-ph",
"math.MP",
"math.SP",
"nlin.PS",
"physics.bio-ph",
"q-bio.MN"
] | The second law of thermodynamics implies that no macroscopic system may oscillate indefinitely without consuming energy. The question of the number of possible oscillations and the coherent quality of these oscillations remain unanswered. This paper proves the upper-bounds on the number and quality of such oscillations... | {
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1006.0274 | Learning Probabilistic Hierarchical Task Networks to Capture User
Preferences | [
"cs.AI"
] | We propose automatically learning probabilistic Hierarchical Task Networks (pHTNs) in order to capture a user's preferences on plans, by observing only the user's behavior. HTNs are a common choice of representation for a variety of purposes in planning, including work on learning in planning. Our contributions are (a)... | {
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1006.0277 | The Limits of Error Correction with lp Decoding | [
"cs.IT",
"math.IT"
] | An unknown vector f in R^n can be recovered from corrupted measurements y = Af + e where A^(m*n)(m>n) is the coding matrix if the unknown error vector e is sparse. We investigate the relationship of the fraction of errors and the recovering ability of lp-minimization (0 < p <= 1) which returns a vector x minimizing the... | {
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1006.0284 | Asymptotic Optimality of Antidictionary Codes | [
"cs.IT",
"math.IT"
] | An antidictionary code is a lossless compression algorithm using an antidictionary which is a set of minimal words that do not occur as substrings in an input string. The code was proposed by Crochemore et al. in 2000, and its asymptotic optimality has been proved with respect to only a specific information source, cal... | {
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1006.0289 | M\'{e}todos para la Selecci\'{o}n y el Ajuste de Caracter\'{i}sticas en
el Problema de la Detecci\'{o}n de Spam | [
"cs.IR",
"cs.AI"
] | The email is used daily by millions of people to communicate around the globe and it is a mission-critical application for many businesses. Over the last decade, unsolicited bulk email has become a major problem for email users. An overwhelming amount of spam is flowing into users' mailboxes daily. In 2004, an estimate... | {
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1006.0304 | On the stable recovery of the sparsest overcomplete representations in
presence of noise | [
"cs.IT",
"math.IT"
] | Let x be a signal to be sparsely decomposed over a redundant dictionary A, i.e., a sparse coefficient vector s has to be found such that x=As. It is known that this problem is inherently unstable against noise, and to overcome this instability, the authors of [Stable Recovery; Donoho et.al., 2006] have proposed to use ... | {
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1006.0312 | Markov Lemma for Countable Alphabets | [
"cs.IT",
"math.IT"
] | Strong typicality and the Markov lemma have been used in the proofs of several multiterminal source coding theorems. Since these two tools can be applied to finite alphabets only, the results proved by them are subject to the same limitation. Recently, a new notion of typicality, namely unified typicality, has been def... | {
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1006.0330 | Soft-Output Sphere Decoder for Multiple-Symbol Differential Detection of
Impulse-Radio Ultra-Wideband | [
"cs.IT",
"math.IT"
] | Power efficiency of noncoherent receivers for impulse-radio ultra-wideband (IR-UWB) transmission systems can significantly be improved, on the one hand, by employing multiple-symbol differential detection (MSDD), and, on the other hand, by providing reliability information to the subsequent channel decoder. In this pap... | {
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1006.0334 | One-Shot Capacity of Discrete Channels | [
"cs.IT",
"math.IT"
] | Shannon defined channel capacity as the highest rate at which there exists a sequence of codes of block length $n$ such that the error probability goes to zero as $n$ goes to infinity. In this definition, it is implicit that the block length, which can be viewed as the number of available channel uses, is unlimited. Th... | {
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1006.0355 | An algebraic approach to information theory | [
"cs.IT",
"math.IT"
] | This work proposes an algebraic model for classical information theory. We first give an algebraic model of probability theory. Information theoretic constructs are based on this model. In addition to theoretical insights provided by our model one obtains new computational and analytical tools. Several important theore... | {
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1006.0375 | Information theoretic model validation for clustering | [
"cs.IT",
"cs.LG",
"math.IT",
"stat.ML"
] | Model selection in clustering requires (i) to specify a suitable clustering principle and (ii) to control the model order complexity by choosing an appropriate number of clusters depending on the noise level in the data. We advocate an information theoretic perspective where the uncertainty in the measurements quantize... | {
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1006.0379 | Adaptive Demodulation in Differentially Coherent Phase Systems: Design
and Performance Analysis | [
"cs.IT",
"math.IT"
] | Adaptive Demodulation (ADM) is a newly proposed rate-adaptive system which operates without requiring Channel State Information (CSI) at the transmitter (unlike adaptive modulation) by using adaptive decision region boundaries at the receiver and encoding the data with a rateless code. This paper addresses the design a... | {
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1006.0385 | Brain-Like Stochastic Search: A Research Challenge and Funding
Opportunity | [
"cs.AI"
] | Brain-Like Stochastic Search (BLiSS) refers to this task: given a family of utility functions U(u,A), where u is a vector of parameters or task descriptors, maximize or minimize U with respect to u, using networks (Option Nets) which input A and learn to generate good options u stochastically. This paper discusses why ... | {
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1006.0386 | A Smart Approach for GPT Cryptosystem Based on Rank Codes | [
"cs.IT",
"cs.CR",
"math.IT"
] | The concept of Public- key cryptosystem was innovated by McEliece's cryptosystem. The public key cryptosystem based on rank codes was presented in 1991 by Gabidulin -Paramonov-Trejtakov(GPT). The use of rank codes in cryptographic applications is advantageous since it is practically impossible to utilize combinatoric d... | {
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1006.0392 | Computing the speed of convergence of ergodic averages and pseudorandom
points in computable dynamical systems | [
"cs.NA",
"cs.CE",
"cs.LO"
] | A pseudorandom point in an ergodic dynamical system over a computable metric space is a point which is computable but its dynamics has the same statistical behavior as a typical point of the system. It was proved in [Avigad et al. 2010, Local stability of ergodic averages] that in a system whose dynamics is computabl... | {
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1006.0397 | Effective Capacity and Randomness of Closed Sets | [
"cs.LO",
"cs.IT",
"math.IT",
"math.LO"
] | We investigate the connection between measure and capacity for the space of nonempty closed subsets of {0,1}*. For any computable measure, a computable capacity T may be defined by letting T(Q) be the measure of the family of closed sets which have nonempty intersection with Q. We prove an effective version of Choquet'... | {
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1006.0408 | A Mathematical Framework for Agent Based Models of Complex Biological
Networks | [
"q-bio.QM",
"cs.MA",
"physics.bio-ph"
] | Agent-based modeling and simulation is a useful method to study biological phenomena in a wide range of fields, from molecular biology to ecology. Since there is currently no agreed-upon standard way to specify such models it is not always easy to use published models. Also, since model descriptions are not usually giv... | {
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1006.0448 | Emergence of Complex-Like Cells in a Temporal Product Network with Local
Receptive Fields | [
"cs.NE"
] | We introduce a new neural architecture and an unsupervised algorithm for learning invariant representations from temporal sequence of images. The system uses two groups of complex cells whose outputs are combined multiplicatively: one that represents the content of the image, constrained to be constant over several con... | {
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1006.0475 | Prediction with Advice of Unknown Number of Experts | [
"cs.LG"
] | In the framework of prediction with expert advice, we consider a recently introduced kind of regret bounds: the bounds that depend on the effective instead of nominal number of experts. In contrast to the NormalHedge bound, which mainly depends on the effective number of experts and also weakly depends on the nominal o... | {
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1006.0496 | The diversity-multiplexing tradeoff of the MIMO Z interference channel | [
"cs.IT",
"math.IT"
] | The fundamental generalized diversity-multiplexing tradeoff (GDMT) of the quasi-static fading MIMO Z interference channel (Z-IC) is established for the general Z-IC with an arbitrary number of antennas at each node under the assumptions of full channel state information at the transmitters (CSIT) and a short-term avera... | {
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1006.0542 | Multicast Capacity Scaling of Wireless Networks with Multicast Outage | [
"cs.IT",
"math.IT"
] | Multicast transmission has several distinctive traits as opposed to more commonly studied unicast networks. Specially, these include (i) identical packets must be delivered successfully to several nodes, (ii) outage could simultaneously happen at different receivers, and (iii) the multicast rate is dominated by the rec... | {
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1006.0544 | Capacity scaling law by multiuser diversity in cognitive radio systems | [
"cs.IT",
"math.IT"
] | This paper analyzes the multiuser diversity gain in a cognitive radio (CR) system where secondary transmitters opportunistically utilize the spectrum licensed to primary users only when it is not occupied by the primary users. To protect the primary users from the interference caused by the missed detection of primary ... | {
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1006.0575 | XQ2P: Efficient XQuery P2P Time Series Processing | [
"cs.DB"
] | In this demonstration, we propose a model for the management of XML time series (TS), using the new XQuery 1.1 window operator. We argue that centralized computation is slow, and demonstrate XQ2P, our prototype of efficient XQuery P2P TS computation in the context of financial analysis of large data sets (>1M values). | {
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1006.0576 | Gestion efficace de s\'eries temporelles en P2P: Application \`a
l'analyse technique et l'\'etude des objets mobiles | [
"cs.DB"
] | In this paper, we propose a simple generic model to manage time series. A time series is composed of a calendar with a typed value for each calendar entry. Although the model could support any kind of XML typed values, in this paper we focus on real numbers, which are the usual application. We define basic vector space... | {
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1006.0619 | Spectrum Sharing in Cognitive Radio with Quantized Channel Information | [
"cs.IT",
"math.IT",
"math.OC"
] | We consider a wideband spectrum sharing system where a secondary user can share a number of orthogonal frequency bands where each band is licensed to an individual primary user. We address the problem of optimum secondary transmit power allocation for its ergodic capacity maximization subject to an average sum (across ... | {
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1006.0644 | The Achievable Distortion Region of Bivariate Gaussian Source on
Gaussian Broadcast Channel | [
"cs.IT",
"math.IT"
] | We provide a complete characterization of the achievable distortion region for the problem of sending a bivariate Gaussian source over bandwidth-matched Gaussian broadcast channels, where each receiver is interested in only one component of the source. This setting naturally generalizes the simple single Gaussian sourc... | {
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1006.0646 | Irregular Turbo Codes in Block-Fading Channels | [
"cs.IT",
"math.IT"
] | We study irregular binary turbo codes over non-ergodic block-fading channels. We first propose an extension of channel multiplexers initially designed for regular turbo codes. We then show that, using these multiplexers, irregular turbo codes that exhibit a small decoding threshold over the ergodic Gaussian-noise chann... | {
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1006.0659 | EXIT Chart Approximations using the Role Model Approach | [
"cs.IT",
"math.IT"
] | Extrinsic Information Transfer (EXIT) functions can be measured by statistical methods if the message alphabet size is moderate or if messages are true a-posteriori distributions. We propose an approximation we call mixed information that constitutes a lower bound for the true EXIT function and can be estimated by stat... | {
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1006.0719 | Why Gabor Frames? Two Fundamental Measures of Coherence and Their Role
in Model Selection | [
"math.ST",
"cs.IT",
"math.IT",
"stat.ML",
"stat.TH"
] | This paper studies non-asymptotic model selection for the general case of arbitrary design matrices and arbitrary nonzero entries of the signal. In this regard, it generalizes the notion of incoherence in the existing literature on model selection and introduces two fundamental measures of coherence---termed as the wor... | {
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1006.0741 | Analysis of Collectivism and Egoism Phenomena within the Context of
Social Welfare | [
"cs.MA",
"cs.SI",
"math.OC"
] | Comparative benefits provided by the basic social strategies including collectivism and egoism are investigated within the framework of democratic decision-making. In particular, we study the mechanism of growing "snowball" of cooperation. | {
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1006.0763 | Good Codes From Generalised Algebraic Geometry Codes | [
"cs.IT",
"math.IT"
] | Algebraic geometry codes or Goppa codes are defined with places of degree one. In constructing generalised algebraic geometry codes places of higher degree are used. In this paper we present 41 new codes over GF(16) which improve on the best known codes of the same length and rate. The construction method uses places o... | {
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1006.0778 | The Two-Way Wiretap Channel: Achievable Regions and Experimental Results | [
"cs.IT",
"math.IT"
] | This work considers the two-way wiretap channel in which two legitimate users, Alice and Bob, wish to exchange messages securely in the presence of a passive eavesdropper Eve. In the full-duplex scenario, where each node can transmit and receive simultaneously, we obtain new achievable secrecy rate regions based on the... | {
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1006.0795 | Channel Decoding with a Bayesian Equalizer | [
"cs.IT",
"math.IT"
] | Low-density parity-check (LPDC) decoders assume the channel estate information (CSI) is known and they have the true a posteriori probability (APP) for each transmitted bit. But in most cases of interest, the CSI needs to be estimated with the help of a short training sequence and the LDPC decoder has to decode the rec... | {
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1006.0871 | Capacity for Half-Duplex Line Networks with Two Sources | [
"cs.IT",
"math.IT"
] | The focus is on noise-free half-duplex line networks with two sources where the first node and either the second node or the second-last node in the cascade act as sources. In both cases, we establish the capacity region of rates at which both sources can transmit independent information to a common sink. The achievabi... | {
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1006.0876 | Building a Data Warehouse for National Social Security Fund of the
Republic of Tunisia | [
"cs.DB"
] | The amounts of data available to decision makers are increasingly important, given the network availability, low cost storage and diversity of applications. To maximize the potential of these data within the National Social Security Fund (NSSF) in Tunisia, we have built a data warehouse as a multidimensional database, ... | {
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1006.0888 | Fundamental Limits of Wideband Localization - Part I: A General
Framework | [
"cs.IT",
"cs.NI",
"math.IT"
] | The availability of positional information is of great importance in many commercial, public safety, and military applications. The coming years will see the emergence of location-aware networks with sub-meter accuracy, relying on accurate range measurements provided by wide bandwidth transmissions. In this two-part pa... | {
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1006.0890 | Fundamental Limits of Wideband Localization - Part II: Cooperative
Networks | [
"cs.IT",
"cs.NI",
"math.IT"
] | The availability of positional information is of great importance in many commercial, governmental, and military applications. Localization is commonly accomplished through the use of radio communication between mobile devices (agents) and fixed infrastructure (anchors). However, precise determination of agent position... | {
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1006.0964 | On Achievable Rate Regions for Half-Duplex Causal Cognitive Radio
Channels | [
"cs.IT",
"math.IT"
] | Coding for the causal cognitive radio channel, with the cognitive source subjected to a half-duplex constraint, is studied. A discrete memoryless channel model incorporating the half-duplex constraint is presented, and a new achievable rate region is derived for this channel. It is proved that this rate region contains... | {
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1006.0991 | Variational Program Inference | [
"cs.AI"
] | We introduce a framework for representing a variety of interesting problems as inference over the execution of probabilistic model programs. We represent a "solution" to such a problem as a guide program which runs alongside the model program and influences the model program's random choices, leading the model program ... | {
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1006.1024 | A Low-Complexity Joint Detection-Decoding Algorithm for Nonbinary
LDPC-Coded Modulation Systems | [
"cs.IT",
"math.IT"
] | In this paper, we present a low-complexity joint detection-decoding algorithm for nonbinary LDPC codedmodulation systems. The algorithm combines hard-decision decoding using the message-passing strategy with the signal detector in an iterative manner. It requires low computational complexity, offers good system perform... | {
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1006.1029 | Chi-square-based scoring function for categorization of MEDLINE
citations | [
"cs.IR",
"stat.AP",
"stat.ML"
] | Objectives: Text categorization has been used in biomedical informatics for identifying documents containing relevant topics of interest. We developed a simple method that uses a chi-square-based scoring function to determine the likelihood of MEDLINE citations containing genetic relevant topic. Methods: Our procedure ... | {
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1006.1030 | Rasch-based high-dimensionality data reduction and class prediction with
applications to microarray gene expression data | [
"cs.AI",
"stat.AP",
"stat.ME",
"stat.ML"
] | Class prediction is an important application of microarray gene expression data analysis. The high-dimensionality of microarray data, where number of genes (variables) is very large compared to the number of samples (obser- vations), makes the application of many prediction techniques (e.g., logistic regression, discri... | {
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1006.1055 | Shannon Revisited: Considering a More Tractable Expression to Measure
and Manage Intractability, Uncertainty, Risk, Ignorance, and Entropy | [
"cs.IT",
"math.IT"
] | Building on Shannon's lead, let's consider a more malleable expression for tracking uncertainty, and states of "knowledge available" vs. "knowledge missing," to better practice innovation, improve risk management, and successfully measure progress of intractable undertakings. Shannon's formula, and its common replaceme... | {
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1006.1057 | On improving security of GPT cryptosystems | [
"cs.CR",
"cs.IT",
"math.IT"
] | The public key cryptosystem based on rank error correcting codes (the GPT cryptosystem) was proposed in 1991. Use of rank codes in cryptographic applications is advantageous since it is practically impossible to utilize combinatoric decoding. This enabled using public keys of a smaller size. Several attacks against thi... | {
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1006.1080 | The Dilated Triple | [
"cs.AI"
] | The basic unit of meaning on the Semantic Web is the RDF statement, or triple, which combines a distinct subject, predicate and object to make a definite assertion about the world. A set of triples constitutes a graph, to which they give a collective meaning. It is upon this simple foundation that the rich, complex kno... | {
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1006.1129 | Predictive PAC learnability: a paradigm for learning from exchangeable
input data | [
"cs.LG"
] | Exchangeable random variables form an important and well-studied generalization of i.i.d. variables, however simple examples show that no nontrivial concept or function classes are PAC learnable under general exchangeable data inputs $X_1,X_2,\ldots$. Inspired by the work of Berti and Rigo on a Glivenko--Cantelli theor... | {
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1006.1138 | Online Learning via Sequential Complexities | [
"cs.LG",
"stat.ML"
] | We consider the problem of sequential prediction and provide tools to study the minimax value of the associated game. Classical statistical learning theory provides several useful complexity measures to study learning with i.i.d. data. Our proposed sequential complexities can be seen as extensions of these measures to ... | {
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1006.1149 | The diversity-multiplexing tradeoff of the symmetric MIMO 2-user
interference channel | [
"cs.IT",
"math.IT"
] | The fundamental diversity-multiplexing tradeoff (DMT) of the quasi-static fading, symmetric $2$-user MIMO interference channel (IC) with channel state information at the transmitters (CSIT) and a short term average power constraint is obtained. The general case is considered where the interference-to-noise ratio (INR) ... | {
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1006.1162 | MIMO ARQ with Multi-bit Feedback: Outage Analysis | [
"cs.IT",
"math.IT"
] | We study the asymptotic outage performance of incremental redundancy automatic repeat request (INR-ARQ) transmission over the multiple-input multiple-output (MIMO) block-fading channels with discrete input constellations. We first show that transmission with random codes using a discrete signal constellation across all... | {
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1006.1172 | Distributed Rateless Codes with UEP Property | [
"cs.IT",
"math.IT"
] | When multiple sources of data need to transmit their rateless coded symbols through a single relay to a common destination, a distributed rateless code instead of several separate conventional rateless codes can be employed to encode the input symbols to increase the transmission efficiency and flexibility. In this p... | {
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1006.1184 | An Algorithm to Self-Extract Secondary Keywords and Their Combinations
Based on Abstracts Collected using Primary Keywords from Online Digital
Libraries | [
"cs.IR"
] | The high-level contribution of this paper is the development and implementation of an algorithm to selfextract secondary keywords and their combinations (combo words) based on abstracts collected using standard primary keywords for research areas from reputed online digital libraries like IEEE Explore, PubMed Central a... | {
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1006.1187 | Biometric Authentication using Nonparametric Methods | [
"cs.CV"
] | The physiological and behavioral trait is employed to develop biometric authentication systems. The proposed work deals with the authentication of iris and signature based on minimum variance criteria. The iris patterns are preprocessed based on area of the connected components. The segmented image used for authenticat... | {
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1006.1190 | Game Information System | [
"cs.AI"
] | In this Information system age many organizations consider information system as their weapon to compete or gain competitive advantage or give the best services for non profit organizations. Game Information System as combining Information System and game is breakthrough to achieve organizations' performance. The Game ... | {
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1006.1210 | Full vectoring optimal power allocation in xDSL channels under per-modem
power constraints and spectral mask constraints | [
"cs.IT",
"math.IT"
] | In xDSL systems, crosstalk can be separated into two categories, namely in-domain crosstalk and out-of-domain crosstalk. In-domain crosstalk is also refered to as self crosstalk. Out-of-domain crosstalk is crosstalk originating from outside the multi-pair system and is also denoted as external noise (alien crosstalk, r... | {
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1006.1213 | Optimal power allocation for downstream xDSL with per-modem total power
constraints : Broadcast Channel Optimal Spectrum Balancing (BC-OSB) | [
"cs.IT",
"math.IT"
] | Recently, the duality between Multiple Input Multiple Output (MIMO) Multiple Access Channels (MAC) and MIMO Broadcast Channels (BC) has been established under a total power constraint. The same set of rates for MAC can be achieved in BC exploiting the MAC-BC duality formulas while preserving the total power constraint.... | {
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} |
1006.1288 | Regression on fixed-rank positive semidefinite matrices: a Riemannian
approach | [
"cs.LG"
] | The paper addresses the problem of learning a regression model parameterized by a fixed-rank positive semidefinite matrix. The focus is on the nonlinear nature of the search space and on scalability to high-dimensional problems. The mathematical developments rely on the theory of gradient descent algorithms adapted to ... | {
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} |
1006.1309 | Using Grid Files for a Relational Database Management System | [
"cs.DB"
] | This paper describes our experience with using Grid files as the main storage organization for a relational database management system. We primarily focus on the following two aspects. (i) Strategies for implementing grid files efficiently. (ii) Methods for efficiency evaluating queries posed to a database organized us... | {
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} |
1006.1328 | Uncovering the Riffled Independence Structure of Rankings | [
"cs.LG",
"cs.AI",
"stat.AP",
"stat.ML"
] | Representing distributions over permutations can be a daunting task due to the fact that the number of permutations of $n$ objects scales factorially in $n$. One recent way that has been used to reduce storage complexity has been to exploit probabilistic independence, but as we argue, full independence assumptions impo... | {
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} |
1006.1343 | Segmentation and Nodal Points in Narrative: Study of Multiple Variations
of a Ballad | [
"cs.CL",
"stat.ML"
] | The Lady Maisry ballads afford us a framework within which to segment a storyline into its major components. Segments and as a consequence nodal points are discussed for nine different variants of the Lady Maisry story of a (young) woman being burnt to death by her family, on account of her becoming pregnant by a forei... | {
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} |
1006.1346 | C-HiLasso: A Collaborative Hierarchical Sparse Modeling Framework | [
"stat.ML",
"cs.CV"
] | Sparse modeling is a powerful framework for data analysis and processing. Traditionally, encoding in this framework is performed by solving an L1-regularized linear regression problem, commonly referred to as Lasso or Basis Pursuit. In this work we combine the sparsity-inducing property of the Lasso model at the indivi... | {
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} |
1006.1377 | Joint Bandwidth and Power Allocation with Admission Control in Wireless
Multi-User Networks With and Without Relaying | [
"cs.IT",
"math.IT"
] | Equal allocation of bandwidth and/or power may not be efficient for wireless multi-user networks with limited bandwidth and power resources. Joint bandwidth and power allocation strategies for wireless multi-user networks with and without relaying are proposed in this paper for (i) the maximization of the sum capacity ... | {
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} |
1006.1380 | Pareto Region Characterization for Rate Control in Multi-User Systems
and Nash Bargaining | [
"cs.GT",
"cs.IT",
"math.IT"
] | The problem of rate control in multi-user multiple-input multiple-output (MIMO) interference systems is formulated as a multicriteria optimization (MCO) problem. The Pareto rate region of the MCO problem is characterized. It is shown that for the convexity of the Pareto rate region it is sufficient that the interferenc... | {
"Other": 1,
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} |
1006.1382 | On Regret of Parametric Mismatch in Minimum Mean Square Error Estimation | [
"cs.IT",
"math.IT"
] | This paper studies the effect of parametric mismatch in minimum mean square error (MMSE) estimation. In particular, we consider the problem of estimating the input signal from the output of an additive white Gaussian channel whose gain is fixed, but unknown. The input distribution is known, and the estimation process c... | {
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} |
1006.1383 | Efficient Symbol Sorting for High Intermediate Recovery Rate of LT Codes | [
"cs.IT",
"math.IT"
] | LT codes are modern and efficient rateless forward error correction (FEC) codes with close to channel capacity performance. Nevertheless, in intermediate range where the number of received encoded symbols is less than the number of source symbols, LT codes have very low recovery rates. In this paper, we propose a nov... | {
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} |
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