id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
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cs/0611113 | An Anthological Review of Research Utilizing MontyLingua, a Python-Based
End-to-End Text Processor | [
"cs.CL"
] | MontyLingua, an integral part of ConceptNet which is currently the largest commonsense knowledge base, is an English text processor developed using Python programming language in MIT Media Lab. The main feature of MontyLingua is the coverage for all aspects of English text processing from raw input text to semantic mea... | {
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cs/0611114 | Very Sparse Stable Random Projections, Estimators and Tail Bounds for
Stable Random Projections | [
"cs.DS",
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"cs.LG",
"math.IT"
] | This paper will focus on three different aspects in improving the current practice of stable random projections. Firstly, we propose {\em very sparse stable random projections} to significantly reduce the processing and storage cost, by replacing the $\alpha$-stable distribution with a mixture of a symmetric $\alpha$... | {
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cs/0611115 | A higher-order active contour model of a `gas of circles' and its
application to tree crown extraction | [
"cs.CV"
] | Many image processing problems involve identifying the region in the image domain occupied by a given entity in the scene. Automatic solution of these problems requires models that incorporate significant prior knowledge about the shape of the region. Many methods for including such knowledge run into difficulties when... | {
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cs/0611118 | A Neutrosophic Description Logic | [
"cs.AI"
] | Description Logics (DLs) are appropriate, widely used, logics for managing structured knowledge. They allow reasoning about individuals and concepts, i.e. set of individuals with common properties. Typically, DLs are limited to dealing with crisp, well defined concepts. That is, concepts for which the problem whether a... | {
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cs/0611120 | Wireless Information-Theoretic Security - Part I: Theoretical Aspects | [
"cs.IT",
"math.IT"
] | In this two-part paper, we consider the transmission of confidential data over wireless wiretap channels. The first part presents an information-theoretic problem formulation in which two legitimate partners communicate over a quasi-static fading channel and an eavesdropper observes their transmissions through another ... | {
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cs/0611121 | Wireless Information-Theoretic Security - Part II: Practical
Implementation | [
"cs.IT",
"math.IT"
] | In Part I of this two-part paper on confidential communication over wireless channels, we studied the fundamental security limits of quasi-static fading channels from the point of view of outage secrecy capacity with perfect and imperfect channel state information. In Part II, we develop a practical secret key agreemen... | {
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cs/0611122 | Knowledge Representation Concepts for Automated SLA Management | [
"cs.SE",
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"cs.LO",
"cs.PL"
] | Outsourcing of complex IT infrastructure to IT service providers has increased substantially during the past years. IT service providers must be able to fulfil their service-quality commitments based upon predefined Service Level Agreements (SLAs) with the service customer. They need to manage, execute and maintain tho... | {
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cs/0611123 | Functional Bregman Divergence and Bayesian Estimation of Distributions | [
"cs.IT",
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"math.IT"
] | A class of distortions termed functional Bregman divergences is defined, which includes squared error and relative entropy. A functional Bregman divergence acts on functions or distributions, and generalizes the standard Bregman divergence for vectors and a previous pointwise Bregman divergence that was defined for fun... | {
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cs/0611124 | Low-rank matrix factorization with attributes | [
"cs.LG",
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"cs.IR"
] | We develop a new collaborative filtering (CF) method that combines both previously known users' preferences, i.e. standard CF, as well as product/user attributes, i.e. classical function approximation, to predict a given user's interest in a particular product. Our method is a generalized low rank matrix completion pro... | {
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cs/0611125 | Relay Channels with Confidential Messages | [
"cs.IT",
"math.IT"
] | We consider a relay channel where a relay helps the transmission of messages from one sender to one receiver. The relay is considered not only as a sender that helps the message transmission but as a wire-tapper who can obtain some knowledge about the transmitted messages. In this paper we study the coding problem of t... | {
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cs/0611127 | Coupling Methodology within the Software Platform Alliances | [
"cs.MS",
"cs.CE"
] | CEA, ANDRA and EDF are jointly developing the software platform ALLIANCES which aim is to produce a tool for the simulation of nuclear waste storage and disposal repository. This type of simulations deals with highly coupled thermo-hydro-mechanical and chemical (T-H-M-C) processes. A key objective of Alliances is to gi... | {
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cs/0611129 | Shannon's secrecy system with informed receivers and its application to
systematic coding for wiretapped channels | [
"cs.IT",
"math.IT"
] | Shannon's secrecy system is studied in a setting, where both the legitimate decoder and the wiretapper have access to side information sequences correlated to the source, but the wiretapper receives both the coded information and the side information via channels that are more noisy than the respective channels of the ... | {
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cs/0611131 | Scatter Networks: A New Approach for Analyzing Information Scatter on
the Web | [
"cs.IR"
] | Information on any given topic is often scattered across the web. Previously this scatter has been characterized through the distribution of a set of facts (i.e. pieces of information) across web pages, showing that typically a few pages contain many facts on the topic, while many pages contain just a few. While such a... | {
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cs/0611132 | The specifications making in complex CAD-system of renovation of the
enterprises on the basis of modules in the drawing and electronic catalogues | [
"cs.CE"
] | The experience of automation of the specifications making of the projects of renovation of the industrial enterprises is described, being based on the special modules in the drawing containing the visible image and additional parameters, and electronic catalogues | {
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cs/0611133 | The modelling of the automation schemes of technological processes in
CAD-system of renovation of the enterprises | [
"cs.CE"
] | According to the requirements of the Russian standards, the automation schemes are necessary practically in each project of renovation of industrial buildings and facilities, in which any technological processes are realized. The model representations of the automation schemes in CAD-system TechnoCAD GlassX are describ... | {
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cs/0611135 | Genetic Programming for Kernel-based Learning with Co-evolving Subsets
Selection | [
"cs.AI"
] | Support Vector Machines (SVMs) are well-established Machine Learning (ML) algorithms. They rely on the fact that i) linear learning can be formalized as a well-posed optimization problem; ii) non-linear learning can be brought into linear learning thanks to the kernel trick and the mapping of the initial search space o... | {
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cs/0611136 | Neural Computation with Rings of Quasiperiodic Oscillators | [
"cs.RO"
] | We describe the use of quasiperiodic oscillators for computation and control of robots. We also describe their relationship to central pattern generators in simple organisms and develop a group theory for describing the dynamics of these systems. | {
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cs/0611138 | Functional Brain Imaging with Multi-Objective Multi-Modal Evolutionary
Optimization | [
"cs.AI"
] | Functional brain imaging is a source of spatio-temporal data mining problems. A new framework hybridizing multi-objective and multi-modal optimization is proposed to formalize these data mining problems, and addressed through Evolutionary Computation (EC). The merits of EC for spatio-temporal data mining are demonstrat... | {
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cs/0611140 | On the Benefits of Inoculation, an Example in Train Scheduling | [
"cs.AI",
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] | The local reconstruction of a railway schedule following a small perturbation of the traffic, seeking minimization of the total accumulated delay, is a very difficult and tightly constrained combinatorial problem. Notoriously enough, the railway company's public image degrades proportionally to the amount of daily dela... | {
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cs/0611141 | A Generic Global Constraint based on MDDs | [
"cs.AI"
] | The paper suggests the use of Multi-Valued Decision Diagrams (MDDs) as the supporting data structure for a generic global constraint. We give an algorithm for maintaining generalized arc consistency (GAC) on this constraint that amortizes the cost of the GAC computation over a root-to-terminal path in the search tree. ... | {
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cs/0611144 | Coding Improves the Optimal Delay-Throughput Trade-offs in Mobile Ad-Hoc
Networks: Two-Dimensional I.I.D. Mobility Models | [
"cs.NI",
"cs.IT",
"math.IT"
] | In this paper, we investigate the delay-throughput trade-offs in mobile ad-hoc networks under two-dimensional i.i.d. mobility models. We consider two mobility time-scales: (i) Fast mobility where node mobility is at the same time-scale as data transmissions; (ii) Slow mobility where node mobility is assumed to occur at... | {
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cs/0611145 | A Unified View of TD Algorithms; Introducing Full-Gradient TD and
Equi-Gradient Descent TD | [
"cs.LG"
] | This paper addresses the issue of policy evaluation in Markov Decision Processes, using linear function approximation. It provides a unified view of algorithms such as TD(lambda), LSTD(lambda), iLSTD, residual-gradient TD. It is asserted that they all consist in minimizing a gradient function and differ by the form of ... | {
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cs/0611146 | Linear-Codes-Based Lossless Joint Source-Channel Coding for
Multiple-Access Channels | [
"cs.IT",
"math.IT"
] | A general lossless joint source-channel coding (JSCC) scheme based on linear codes and random interleavers for multiple-access channels (MACs) is presented and then analyzed in this paper. By the information-spectrum approach and the code-spectrum approach, it is shown that a linear code with a good joint spectrum can ... | {
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cs/0611148 | Next Generation Language Resources using GRID | [
"cs.DC",
"cs.CL"
] | This paper presents a case study concerning the challenges and requirements posed by next generation language resources, realized as an overall model of open, distributed and collaborative language infrastructure. If a sort of "new paradigm" is required, we think that the emerging and still evolving technology connecte... | {
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cs/0611150 | A Novel Bayesian Classifier using Copula Functions | [
"cs.LG",
"cs.AI",
"cs.IR"
] | A useful method for representing Bayesian classifiers is through \emph{discriminant functions}. Here, using copula functions, we propose a new model for discriminants. This model provides a rich and generalized class of decision boundaries. These decision boundaries significantly boost the classification accuracy espec... | {
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cs/0611155 | Zig-zag and Replacement Product Graphs and LDPC Codes | [
"cs.IT",
"math.IT"
] | The performance of codes defined from graphs depends on the expansion property of the underlying graph in a crucial way. Graph products, such as the zig-zag product and replacement product provide new infinite families of constant degree expander graphs. The paper investigates the use of zig-zag and replacement product... | {
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cs/0611156 | D-MG Tradeoff and Optimal Codes for a Class of AF and DF Cooperative
Communication Protocols | [
"cs.IT",
"math.IT"
] | We consider cooperative relay communication in a fading channel environment under the Orthogonal Amplify and Forward (OAF) and Orthogonal and Non-Orthogonal Selection Decode and Forward (OSDF and NSDF) protocols. For all these protocols, we compute the Diversity-Multiplexing Gain Tradeoff (DMT). We construct DMT optima... | {
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cs/0611160 | Complementary Sets, Generalized Reed-Muller Codes, and Power Control for
OFDM | [
"cs.IT",
"math.IT"
] | The use of error-correcting codes for tight control of the peak-to-mean envelope power ratio (PMEPR) in orthogonal frequency-division multiplexing (OFDM) transmission is considered in this correspondence. By generalizing a result by Paterson, it is shown that each q-phase (q is even) sequence of length 2^m lies in a co... | {
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cs/0611161 | On the Peak-to-Mean Envelope Power Ratio of Phase-Shifted Binary Codes | [
"cs.IT",
"math.IT"
] | The peak-to-mean envelope power ratio (PMEPR) of a code employed in orthogonal frequency-division multiplexing (OFDM) systems can be reduced by permuting its coordinates and by rotating each coordinate by a fixed phase shift. Motivated by some previous designs of phase shifts using suboptimal methods, the following que... | {
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cs/0611162 | Quaternary Constant-Amplitude Codes for Multicode CDMA | [
"cs.IT",
"math.IT"
] | A constant-amplitude code is a code that reduces the peak-to-average power ratio (PAPR) in multicode code-division multiple access (MC-CDMA) systems to the favorable value 1. In this paper quaternary constant-amplitude codes (codes over Z_4) of length 2^m with error-correction capabilities are studied. These codes exis... | {
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cs/0611163 | On Measuring the Impact of Human Actions in the Machine Learning of a
Board Game's Playing Policies | [
"cs.AI",
"cs.GT",
"cs.NE"
] | We investigate systematically the impact of human intervention in the training of computer players in a strategy board game. In that game, computer players utilise reinforcement learning with neural networks for evolving their playing strategies and demonstrate a slow learning speed. Human intervention can significantl... | {
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cs/0611164 | Player co-modelling in a strategy board game: discovering how to play
fast | [
"cs.AI",
"cs.LG"
] | In this paper we experiment with a 2-player strategy board game where playing models are evolved using reinforcement learning and neural networks. The models are evolved to speed up automatic game development based on human involvement at varying levels of sophistication and density when compared to fully autonomous pl... | {
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cs/0611166 | Lossless fitness inheritance in genetic algorithms for decision trees | [
"cs.AI",
"cs.DS",
"cs.NE"
] | When genetic algorithms are used to evolve decision trees, key tree quality parameters can be recursively computed and re-used across generations of partially similar decision trees. Simply storing instance indices at leaves is enough for fitness to be piecewise computed in a lossless fashion. We show the derivation of... | {
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cs/0612002 | Reuse of designs: Desperately seeking an interdisciplinary cognitive
approach | [
"cs.HC",
"cs.AI"
] | This text analyses the papers accepted for the workshop "Reuse of designs: an interdisciplinary cognitive approach". Several dimensions and questions considered as important (by the authors and/or by us) are addressed: What about the "interdisciplinary cognitive" character of the approaches adopted by the authors? Is d... | {
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cs/0612007 | High SNR Analysis for MIMO Broadcast Channels: Dirty Paper Coding vs.
Linear Precoding | [
"cs.IT",
"math.IT"
] | We study the MIMO broadcast channel and compare the achievable throughput for the optimal strategy of dirty paper coding to that achieved with sub-optimal and lower complexity linear precoding (e.g., zero-forcing and block diagonalization) transmission. Both strategies utilize all available spatial dimensions and there... | {
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cs/0612011 | Estimation of Bit and Frame Error Rates of Low-Density Parity-Check
Codes on Binary Symmetric Channels | [
"cs.IT",
"math.IT"
] | A method for estimating the performance of low-density parity-check (LDPC) codes decoded by hard-decision iterative decoding algorithms on binary symmetric channels (BSC) is proposed. Based on the enumeration of the smallest weight error patterns that can not be all corrected by the decoder, this method estimates both ... | {
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cs/0612012 | Geographic Gossip on Geometric Random Graphs via Affine Combinations | [
"cs.MA",
"cs.IT",
"math.IT"
] | In recent times, a considerable amount of work has been devoted to the development and analysis of gossip algorithms in Geometric Random Graphs. In a recently introduced model termed "Geographic Gossip," each node is aware of its position but possesses no further information. Traditionally, gossip protocols have always... | {
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cs/0612014 | Going Stupid with EcoLab | [
"cs.MA"
] | In 2005, Railsback et al. proposed a very simple model ({\em Stupid Model}) that could be implemented within a couple of hours, and later extended to demonstrate the use of common ABM platform functionality. They provided implementations of the model in several agent based modelling platforms, and compared the platfo... | {
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cs/0612015 | On the intersection of additive perfect codes | [
"cs.IT",
"math.IT"
] | The intersection problem for additive (extended and non-extended) perfect codes, i.e. which are the possibilities for the number of codewords in the intersection of two additive codes C1 and C2 of the same length, is investigated. Lower and upper bounds for the intersection number are computed and, for any value betwee... | {
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cs/0612019 | On Finite Memory Universal Data Compression and Classification of
Individual Sequences | [
"cs.IT",
"math.IT"
] | Consider the case where consecutive blocks of N letters of a semi-infinite individual sequence X over a finite-alphabet are being compressed into binary sequences by some one-to-one mapping. No a-priori information about X is available at the encoder, which must therefore adopt a universal data-compression algorithm. I... | {
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cs/0612024 | On the Maximum Sum-rate Capacity of Cognitive Multiple Access Channel | [
"cs.IT",
"math.IT"
] | We consider the communication scenario where multiple cognitive users wish to communicate to the same receiver, in the presence of primary transmission. The cognitive transmitters are assumed to have the side information about the primary transmission. The capacity region of cognitive users is formulated under the cons... | {
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cs/0612027 | Experimental Information and Statistical Modeling of Physical Laws | [
"cs.IT",
"cs.IR",
"math.IT"
] | Statistical modeling of physical laws connects experiments with mathematical descriptions of natural phenomena. The modeling is based on the probability density of measured variables expressed by experimental data via a kernel estimator. As an objective kernel the scattering function determined by calibration of the in... | {
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cs/0612029 | A Classification of 6R Manipulators | [
"cs.RO"
] | This paper presents a classification of generic 6-revolute jointed (6R) manipulators using homotopy class of their critical point manifold. A part of classification is listed in this paper because of the complexity of homotopy class of 4-torus. The results of this classification will serve future research of the classi... | {
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cs/0612030 | Loop corrections for approximate inference | [
"cs.AI",
"cs.IT",
"cs.LG",
"math.IT"
] | We propose a method for improving approximate inference methods that corrects for the influence of loops in the graphical model. The method is applicable to arbitrary factor graphs, provided that the size of the Markov blankets is not too large. It is an alternative implementation of an idea introduced recently by Mont... | {
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cs/0612031 | Estimating Aggregate Properties on Probabilistic Streams | [
"cs.DS",
"cs.DB"
] | The probabilistic-stream model was introduced by Jayram et al. \cite{JKV07}. It is a generalization of the data stream model that is suited to handling ``probabilistic'' data where each item of the stream represents a probability distribution over a set of possible events. Therefore, a probabilistic stream determines a... | {
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cs/0612032 | Code Spectrum and Reliability Function: Binary Symmetric Channel | [
"cs.IT",
"math.IT"
] | A new approach for upper bounding the channel reliability function using the code spectrum is described. It allows to treat in a unified way both a low and a high rate cases. In particular, the earlier known upper bounds are improved, and a new derivation of the sphere-packing bound is presented. | {
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cs/0612033 | Acronym-Meaning Extraction from Corpora Using Multi-Tape Weighted
Finite-State Machines | [
"cs.CL",
"cs.DS",
"cs.SC"
] | The automatic extraction of acronyms and their meaning from corpora is an important sub-task of text mining. It can be seen as a special case of string alignment, where a text chunk is aligned with an acronym. Alternative alignments have different cost, and ideally the least costly one should give the correct meaning o... | {
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cs/0612041 | Viterbi Algorithm Generalized for n-Tape Best-Path Search | [
"cs.CL",
"cs.DS",
"cs.SC"
] | We present a generalization of the Viterbi algorithm for identifying the path with minimal (resp. maximal) weight in a n-tape weighted finite-state machine (n-WFSM), that accepts a given n-tuple of input strings (s_1,... s_n). It also allows us to compile the best transduction of a given input n-tuple by a weighted (n+... | {
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cs/0612042 | Decentralized Maximum Likelihood Estimation for Sensor Networks Composed
of Nonlinearly Coupled Dynamical Systems | [
"cs.DC",
"cs.IT",
"math.IT"
] | In this paper we propose a decentralized sensor network scheme capable to reach a globally optimum maximum likelihood (ML) estimate through self-synchronization of nonlinearly coupled dynamical systems. Each node of the network is composed of a sensor and a first-order dynamical system initialized with the local measur... | {
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cs/0612043 | About the Lifespan of Peer to Peer Networks | [
"cs.DC",
"cs.IR"
] | We analyze the ability of peer to peer networks to deliver a complete file among the peers. Early on we motivate a broad generalization of network behavior organizing it into one of two successive phases. According to this view the network has two main states: first centralized - few sources (roots) hold the complete f... | {
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cs/0612044 | The Relay-Eavesdropper Channel: Cooperation for Secrecy | [
"cs.IT",
"math.IT"
] | This paper establishes the utility of user cooperation in facilitating secure wireless communications. In particular, the four-terminal relay-eavesdropper channel is introduced and an outer-bound on the optimal rate-equivocation region is derived. Several cooperation strategies are then devised and the corresponding ac... | {
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cs/0612046 | Social Networks and Social Information Filtering on Digg | [
"cs.HC",
"cs.AI",
"cs.IR"
] | The new social media sites -- blogs, wikis, Flickr and Digg, among others -- underscore the transformation of the Web to a participatory medium in which users are actively creating, evaluating and distributing information. Digg is a social news aggregator which allows users to submit links to, vote on and discuss news ... | {
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cs/0612047 | Social Browsing on Flickr | [
"cs.HC",
"cs.AI"
] | The new social media sites - blogs, wikis, del.icio.us and Flickr, among others - underscore the transformation of the Web to a participatory medium in which users are actively creating, evaluating and distributing information. The photo-sharing site Flickr, for example, allows users to upload photographs, view photos ... | {
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cs/0612049 | Power Control in Distributed Cooperative OFDMA Cellular Networks | [
"cs.IT",
"math.IT"
] | This paper has been withdrawn by the author. | {
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cs/0612051 | On the Decoder Error Probability of Bounded Rank-Distance Decoders for
Maximum Rank Distance Codes | [
"cs.IT",
"math.IT"
] | In this paper, we first introduce the concept of elementary linear subspace, which has similar properties to those of a set of coordinates. We then use elementary linear subspaces to derive properties of maximum rank distance (MRD) codes that parallel those of maximum distance separable codes. Using these properties, w... | {
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cs/0612052 | Budget Optimization in Search-Based Advertising Auctions | [
"cs.DS",
"cs.CE",
"cs.GT"
] | Internet search companies sell advertisement slots based on users' search queries via an auction. While there has been a lot of attention on the auction process and its game-theoretic aspects, our focus is on the advertisers. In particular, the advertisers have to solve a complex optimization problem of how to place bi... | {
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cs/0612053 | Deriving Schrodinger Equation From A Soft-Decision Iterative Decoding
Algorithm | [
"cs.IT",
"math.IT"
] | The belief propagation algorithm has been recognized in the information theory community as a soft-decision iterative decoding algorithm. It is the most powerful algorithm found so far for attacking hard optimization problems in channel decoding. Quantum mechanics is the foundation of modern physics with the time-indep... | {
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cs/0612055 | Linear Probing with Constant Independence | [
"cs.DS",
"cs.DB"
] | Hashing with linear probing dates back to the 1950s, and is among the most studied algorithms. In recent years it has become one of the most important hash table organizations since it uses the cache of modern computers very well. Unfortunately, previous analysis rely either on complicated and space consuming hash func... | {
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cs/0612056 | Conscious Intelligent Systems - Part 1 : I X I | [
"cs.AI"
] | Did natural consciousness and intelligent systems arise out of a path that was co-evolutionary to evolution? Can we explain human self-consciousness as having risen out of such an evolutionary path? If so how could it have been? In this first part of a two-part paper (titled IXI), we take a learning system perspectiv... | {
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cs/0612057 | Conscious Intelligent Systems - Part II - Mind, Thought, Language and
Understanding | [
"cs.AI"
] | This is the second part of a paper on Conscious Intelligent Systems. We use the understanding gained in the first part (Conscious Intelligent Systems Part 1: IXI (arxiv id cs.AI/0612056)) to look at understanding. We see how the presence of mind affects understanding and intelligent systems; we see that the presence of... | {
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cs/0612059 | Synchronization recovery and state model reduction for soft decoding of
variable length codes | [
"cs.NI",
"cs.IT",
"math.IT"
] | Variable length codes exhibit de-synchronization problems when transmitted over noisy channels. Trellis decoding techniques based on Maximum A Posteriori (MAP) estimators are often used to minimize the error rate on the estimated sequence. If the number of symbols and/or bits transmitted are known by the decoder, termi... | {
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cs/0612062 | Unifying Lexicons in view of a Phonological and Morphological Lexical DB | [
"cs.IR"
] | The present work falls in the line of activities promoted by the European Languguage Resource Association (ELRA) Production Committee (PCom) and raises issues in methods, procedures and tools for the reusability, creation, and management of Language Resources. A two-fold purpose lies behind this experiment. The first a... | {
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cs/0612064 | Bounds on Key Appearance Equivocation for Substitution Ciphers | [
"cs.IT",
"cs.CR",
"math.IT"
] | The average conditional entropy of the key given the message and its corresponding cryptogram, H(K|M,C), which is reffer as a key appearance equivocation, was proposed as a theoretical measure of the strength of the cipher system under a known-plaintext attack by Dunham in 1980. In the same work (among other things), l... | {
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cs/0612067 | Retrieving Reed-Solomon coded data under interpolation-based list
decoding | [
"cs.IT",
"math.IT"
] | A transform that enables generator-matrix-based Reed-Solomon (RS) coded data to be recovered under interpolation-based list decoding is presented. The transform matrix needs to be computed only once and the transformation of an element from the output list to the desired RS coded data block incurs $k^{2}$ field multipl... | {
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cs/0612068 | Interactive Configuration by Regular String Constraints | [
"cs.AI"
] | A product configurator which is complete, backtrack free and able to compute the valid domains at any state of the configuration can be constructed by building a Binary Decision Diagram (BDD). Despite the fact that the size of the BDD is exponential in the number of variables in the worst case, BDDs have proved to work... | {
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cs/0612073 | On the Fingerprinting Capacity Under the Marking Assumption | [
"cs.IT",
"cs.CR",
"math.IT"
] | We address the maximum attainable rate of fingerprinting codes under the marking assumption, studying lower and upper bounds on the value of the rate for various sizes of the attacker coalition. Lower bounds are obtained by considering typical coalitions, which represents a new idea in the area of fingerprinting and en... | {
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cs/0612075 | Intermediate Performance of Rateless Codes | [
"cs.IT",
"math.IT"
] | Rateless/fountain codes are designed so that all input symbols can be recovered from a slightly larger number of coded symbols, with high probability using an iterative decoder. In this paper we investigate the number of input symbols that can be recovered by the same decoder, but when the number of coded symbols avail... | {
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cs/0612076 | A New Approach for Capacity Analysis of Large Dimensional Multi-Antenna
Channels | [
"cs.IT",
"math.IT",
"math.PR"
] | This paper adresses the behaviour of the mutual information of correlated MIMO Rayleigh channels when the numbers of transmit and receive antennas converge to infinity at the same rate. Using a new and simple approach based on Poincar\'{e}-Nash inequality and on an integration by parts formula, it is rigorously establi... | {
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cs/0612077 | Algebraic Signal Processing Theory | [
"cs.IT",
"math.IT"
] | This paper presents an algebraic theory of linear signal processing. At the core of algebraic signal processing is the concept of a linear signal model defined as a triple (A, M, phi), where familiar concepts like the filter space and the signal space are cast as an algebra A and a module M, respectively, and phi gener... | {
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cs/0612078 | Effect of Finite Rate Feedback on CDMA Signature Optimization and MIMO
Beamforming Vector Selection | [
"cs.IT",
"math.IT"
] | We analyze the effect of finite rate feedback on CDMA (code-division multiple access) signature optimization and MIMO (multi-input-multi-output) beamforming vector selection. In CDMA signature optimization, for a particular user, the receiver selects a signature vector from a codebook to best avoid interference from ot... | {
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cs/0612080 | On the Decrease Rate of the Non-Gaussianness of the Sum of Independent
Random Variables | [
"cs.IT",
"math.IT"
] | Several proofs of the monotonicity of the non-Gaussianness (divergence with respect to a Gaussian random variable with identical second order statistics) of the sum of n independent and identically distributed (i.i.d.) random variables were published. We give an upper bound on the decrease rate of the non-Gaussianness ... | {
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cs/0612083 | A Byzantine Fault Tolerant Distributed Commit Protocol | [
"cs.DC",
"cs.DB"
] | In this paper, we present a Byzantine fault tolerant distributed commit protocol for transactions running over untrusted networks. The traditional two-phase commit protocol is enhanced by replicating the coordinator and by running a Byzantine agreement algorithm among the coordinator replicas. Our protocol can tolerate... | {
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cs/0612084 | Achievable Rates for the General Gaussian Multiple Access Wire-Tap
Channel with Collective Secrecy | [
"cs.IT",
"cs.CR",
"math.IT"
] | We consider the General Gaussian Multiple Access Wire-Tap Channel (GGMAC-WT). In this scenario, multiple users communicate with an intended receiver in the presence of an intelligent and informed eavesdropper who is as capable as the intended receiver, but has different channel parameters. We aim to provide perfect sec... | {
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cs/0612086 | An asynchronous, decentralised commitment protocol for semantic
optimistic replication | [
"cs.DB",
"cs.NI"
] | We study large-scale distributed cooperative systems that use optimistic replication. We represent a system as a graph of actions (operations) connected by edges that reify semantic constraints between actions. Constraint types include conflict, execution order, dependence, and atomicity. The local state is some schedu... | {
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cs/0612087 | Statistical mechanics of neocortical interactions: Portfolio of
Physiological Indicators | [
"cs.CE",
"cs.IT",
"cs.NE",
"math.IT",
"q-bio.QM"
] | There are several kinds of non-invasive imaging methods that are used to collect data from the brain, e.g., EEG, MEG, PET, SPECT, fMRI, etc. It is difficult to get resolution of information processing using any one of these methods. Approaches to integrate data sources may help to get better resolution of data and bett... | {
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cs/0612095 | Approximation of the Two-Part MDL Code | [
"cs.LG",
"cs.AI",
"cs.IT",
"math.IT"
] | Approximation of the optimal two-part MDL code for given data, through successive monotonically length-decreasing two-part MDL codes, has the following properties: (i) computation of each step may take arbitrarily long; (ii) we may not know when we reach the optimum, or whether we will reach the optimum at all; (iii) t... | {
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cs/0612096 | Using state space differential geometry for nonlinear blind source
separation | [
"cs.LG",
"cs.SD"
] | Given a time series of multicomponent measurements of an evolving stimulus, nonlinear blind source separation (BSS) seeks to find a "source" time series, comprised of statistically independent combinations of the measured components. In this paper, we seek a source time series with local velocity cross correlations tha... | {
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cs/0612097 | Error Exponents for Variable-length Block Codes with Feedback and Cost
Constraints | [
"cs.IT",
"math.IT"
] | Variable-length block-coding schemes are investigated for discrete memoryless channels with ideal feedback under cost constraints. Upper and lower bounds are found for the minimum achievable probability of decoding error $P_{e,\min}$ as a function of constraints $R, \AV$, and $\bar \tau$ on the transmission rate, avera... | {
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cs/0612099 | Network Information Flow in Small World Networks | [
"cs.IT",
"cs.DM",
"math.IT"
] | Recent results from statistical physics show that large classes of complex networks, both man-made and of natural origin, are characterized by high clustering properties yet strikingly short path lengths between pairs of nodes. This class of networks are said to have a small-world topology. In the context of communicat... | {
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cs/0612101 | Maximum Entropy MIMO Wireless Channel Models | [
"cs.IT",
"math.IT"
] | In this contribution, models of wireless channels are derived from the maximum entropy principle, for several cases where only limited information about the propagation environment is available. First, analytical models are derived for the cases where certain parameters (channel energy, average energy, spatial correlat... | {
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cs/0612102 | The Dichotomy of Conjunctive Queries on Probabilistic Structures | [
"cs.DB"
] | We show that for every conjunctive query, the complexity of evaluating it on a probabilistic database is either \PTIME or #\P-complete, and we give an algorithm for deciding whether a given conjunctive query is \PTIME or #\P-complete. The dichotomy property is a fundamental result on query evaluation on probabilistic d... | {
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cs/0612103 | The Boundary Between Privacy and Utility in Data Anonymization | [
"cs.DB"
] | We consider the privacy problem in data publishing: given a relation I containing sensitive information 'anonymize' it to obtain a view V such that, on one hand attackers cannot learn any sensitive information from V, and on the other hand legitimate users can use V to compute useful statistics on I. These are conflict... | {
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cs/0612104 | Sufficient Conditions for Coarse-Graining Evolutionary Dynamics | [
"cs.NE",
"cs.AI"
] | It is commonly assumed that the ability to track the frequencies of a set of schemata in the evolving population of an infinite population genetic algorithm (IPGA) under different fitness functions will advance efforts to obtain a theory of adaptation for the simple GA. Unfortunately, for IPGAs with long genomes and no... | {
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cs/0612109 | Truncating the loop series expansion for Belief Propagation | [
"cs.AI"
] | Recently, M. Chertkov and V.Y. Chernyak derived an exact expression for the partition sum (normalization constant) corresponding to a graphical model, which is an expansion around the Belief Propagation solution. By adding correction terms to the BP free energy, one for each "generalized loop" in the factor graph, the ... | {
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cs/0612110 | Architecture for Modular Data Centers | [
"cs.DB"
] | Several factors are driving high-scale deployments of large data centers built upon commodity components. These commodity clusters are far cheaper than mainframe systems of the past but they bring serious heat and power density issues. Also the high failure rate of the individual components drives significant administr... | {
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cs/0612111 | Fragmentation in Large Object Repositories | [
"cs.DB"
] | Fragmentation leads to unpredictable and degraded application performance. While these problems have been studied in detail for desktop filesystem workloads, this study examines newer systems such as scalable object stores and multimedia repositories. Such systems use a get/put interface to store objects. In principle,... | {
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cs/0612112 | Managing Query Compilation Memory Consumption to Improve DBMS Throughput | [
"cs.DB"
] | While there are known performance trade-offs between database page buffer pool and query execution memory allocation policies, little has been written on the impact of query compilation memory use on overall throughput of the database management system (DBMS). We present a new aspect of the query optimization problem a... | {
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cs/0612113 | Isolation Support for Service-based Applications: A Position Paper | [
"cs.DB"
] | In this paper, we propose an approach to providing the benefits of isolation in service-oriented applications where it is not feasible to hold traditional locks for ACID transactions. Our technique, called "Promises", provides an uniform view for clients which covers a wide range of implementation techniques on the ser... | {
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cs/0612114 | Demaq: A Foundation for Declarative XML Message Processing | [
"cs.DB"
] | This paper gives an overview of Demaq, an XML message processing system operating on the foundation of transactional XML message queues. We focus on the syntax and semantics of its fully declarative, rule-based application language and demonstrate our message-based programming paradigm in the context of a case study. F... | {
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cs/0612115 | Consistent Streaming Through Time: A Vision for Event Stream Processing | [
"cs.DB"
] | Event processing will play an increasingly important role in constructing enterprise applications that can immediately react to business critical events. Various technologies have been proposed in recent years, such as event processing, data streams and asynchronous messaging (e.g. pub/sub). We believe these technologi... | {
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cs/0612117 | Statistical Mechanics of On-line Learning when a Moving Teacher Goes
around an Unlearnable True Teacher | [
"cs.LG",
"cond-mat.dis-nn"
] | In the framework of on-line learning, a learning machine might move around a teacher due to the differences in structures or output functions between the teacher and the learning machine. In this paper we analyze the generalization performance of a new student supervised by a moving machine. A model composed of a fixed... | {
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cs/0612118 | Gossiping with Multiple Messages | [
"cs.NI",
"cs.IT",
"math.IT"
] | This paper investigates the dissemination of multiple pieces of information in large networks where users contact each other in a random uncoordinated manner, and users upload one piece per unit time. The underlying motivation is the design and analysis of piece selection protocols for peer-to-peer networks which disse... | {
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cs/0612122 | Large N Analysis of Amplify-and-Forward MIMO Relay Channels with
Correlated Rayleigh Fading | [
"cs.IT",
"math.IT"
] | In this correspondence the cumulants of the mutual information of the flat Rayleigh fading amplify-and-forward MIMO relay channel without direct link between source and destination are derived in the large array limit. The analysis is based on the replica trick and covers both spatially independent and correlated fadin... | {
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cs/0612123 | Electronic Laboratory Notebook Assisting Reflectance Spectrometry in
Legal Medicine | [
"cs.DB",
"cs.DL",
"cs.IR"
] | Reflectance spectrometry is a fast and reliable method for the characterisation of human skin if the spectra are analysed with respect to a physical model describing the optical properties of human skin. For a field study performed at the Institute of Legal Medicine and the Freiburg Materials Research Center of the Uni... | {
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cs/0612124 | Highly robust error correction by convex programming | [
"cs.IT",
"math.IT",
"math.PR",
"math.ST",
"stat.TH"
] | This paper discusses a stylized communications problem where one wishes to transmit a real-valued signal x in R^n (a block of n pieces of information) to a remote receiver. We ask whether it is possible to transmit this information reliably when a fraction of the transmitted codeword is corrupted by arbitrary gross err... | {
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cs/0612126 | The virtual reality framework for engineering objects | [
"cs.CE",
"cs.MS"
] | A framework for virtual reality of engineering objects has been developed. This framework may simulate different equipment related to virtual reality. Framework supports 6D dynamics, ordinary differential equations, finite formulas, vector and matrix operations. The framework also supports embedding of external softwar... | {
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} |
cs/0612127 | bdbms -- A Database Management System for Biological Data | [
"cs.DB"
] | Biologists are increasingly using databases for storing and managing their data. Biological databases typically consist of a mixture of raw data, metadata, sequences, annotations, and related data obtained from various sources. Current database technology lacks several functionalities that are needed by biological data... | {
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cs/0612128 | SASE: Complex Event Processing over Streams | [
"cs.DB"
] | RFID technology is gaining adoption on an increasing scale for tracking and monitoring purposes. Wide deployments of RFID devices will soon generate an unprecedented volume of data. Emerging applications require the RFID data to be filtered and correlated for complex pattern detection and transformed to events that pro... | {
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} |
cs/0612129 | Impliance: A Next Generation Information Management Appliance | [
"cs.DB"
] | ably successful in building a large market and adapting to the changes of the last three decades, its impact on the broader market of information management is surprisingly limited. If we were to design an information management system from scratch, based upon today's requirements and hardware capabilities, would it lo... | {
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} |
cs/0612132 | A New Era in Citation and Bibliometric Analyses: Web of Science, Scopus,
and Google Scholar | [
"cs.DL",
"cs.IR"
] | Academic institutions, federal agencies, publishers, editors, authors, and librarians increasingly rely on citation analysis for making hiring, promotion, tenure, funding, and/or reviewer and journal evaluation and selection decisions. The Institute for Scientific Information's (ISI) citation databases have been used f... | {
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} |
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