id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1008.0938 | Emergence of Zipf's Law in the Evolution of Communication | [
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"math-ph",
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] | Zipf's law seems to be ubiquitous in human languages and appears to be a universal property of complex communicating systems. Following the early proposal made by Zipf concerning the presence of a tension between the efforts of speaker and hearer in a communication system, we introduce evolution by means of a variation... | {
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1008.0941 | Timing matters: Lessons From The CA Literature On Updating | [
"cs.MA",
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"nlin.CG"
] | In the present article we emphasize the importance of modeling time in the context of agent-based models. To this end, we present a (selective) survey of the Cellular Automata-literature on updating and draw parallels to the issue of agent activation in agent-based models. By means of two simple models, Schelling's seg... | {
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1008.0961 | On the Shannon Cipher System With a Wiretapper Guessing Subject to
Distortion and Reliability Requirements | [
"cs.IT",
"math.IT"
] | In this paper we discuss the processes in the Shannon cipher system with discrete memoryless source and a guessing wiretapper. The wiretapper observes a cryptogram of $N$-vector of ciphered messages in the public channel and tries to guess successively the vector of messages within given distortion level $\Delta$ and s... | {
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1008.1043 | Aggregate Interference Modeling in Cognitive Radio Networks with Power
and Contention Control | [
"cs.IT",
"math.IT"
] | In this paper, we present an interference model for cognitive radio (CR) networks employing power control, contention control or hybrid power/contention control schemes. For the first case, a power control scheme is proposed to govern the transmission power of a CR node. For the second one, a contention control scheme ... | {
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1008.1047 | Robust Adaptive Beamforming Based on Steering Vector Estimation via
Semidefinite Programming Relaxation | [
"cs.IT",
"math.IT",
"math.OC",
"stat.AP"
] | We develop a new approach to robust adaptive beamforming in the presence of signal steering vector errors. Since the signal steering vector is known imprecisely, its presumed (prior) value is used to find a more accurate estimate of the actual steering vector, which then is used for obtaining the optimal beamforming we... | {
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1008.1079 | Perfect Omniscience, Perfect Secrecy and Steiner Tree Packing | [
"cs.IT",
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"math.IT"
] | We consider perfect secret key generation for a ``pairwise independent network'' model in which every pair of terminals share a random binary string, with the strings shared by distinct terminal pairs being mutually independent. The terminals are then allowed to communicate interactively over a public noiseless channel... | {
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1008.1096 | The Naming Game in Social Networks: Community Formation and Consensus
Engineering | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.MA"
] | We study the dynamics of the Naming Game [Baronchelli et al., (2006) J. Stat. Mech.: Theory Exp. P06014] in empirical social networks. This stylized agent-based model captures essential features of agreement dynamics in a network of autonomous agents, corresponding to the development of shared classification schemes in... | {
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1008.1140 | On Two Strong Converse Theorems for Stationary Discrete Memoryless
Channels | [
"cs.IT",
"math.IT"
] | In 1973, Arimoto proved the strong converse theorem for the discrete memoryless channels stating that when transmission rate $R$ is above channel capacity $C$, the error probability of decoding goes to one as the block length $n$ of code word tends to infinity. He proved the theorem by deriving the exponent function of... | {
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1008.1145 | Linear Beamforming for the Spatially Correlated MISO broadcast channel | [
"cs.IT",
"math.IT"
] | A spatially correlated broadcast setting with M antennas at the base station and M users (each with a single antenna) is considered. We assume that the users have perfect channel information about their links and the base station has only statistical information about each user's link. The base station employs a linear... | {
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1008.1150 | Modeling the growth of fingerprints improves matching for adolescents | [
"cs.CV",
"stat.AP"
] | We study the effect of growth on the fingerprints of adolescents, based on which we suggest a simple method to adjust for growth when trying to recover a juvenile's fingerprint in a database years later. Based on longitudinal data sets in juveniles' criminal records, we show that growth essentially leads to an isotropi... | {
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1008.1188 | Data visualization in political and social sciences | [
"cs.GR",
"cs.CE",
"cs.CY"
] | The basic objective of data visualization is to provide an efficient graphical display for summarizing and reasoning about quantitative information. During the last decades, political science has accumulated a large corpus of various kinds of data such as comprehensive factbooks and atlases, characterizing all or most ... | {
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1008.1191 | Improved Fast Similarity Search in Dictionaries | [
"cs.IR",
"cs.DS"
] | We engineer an algorithm to solve the approximate dictionary matching problem. Given a list of words $\mathcal{W}$, maximum distance $d$ fixed at preprocessing time and a query word $q$, we would like to retrieve all words from $\mathcal{W}$ that can be transformed into $q$ with $d$ or less edit operations. We present ... | {
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1008.1270 | Proceedings Twelfth Annual Workshop on Descriptional Complexity of
Formal Systems | [
"cs.FL",
"cs.CC",
"cs.DM",
"cs.IT",
"cs.LO",
"math.IT"
] | The 12th annual workshop, Descriptional Complexity of Formal Systems 2010, is taking place in Saskatoon, Canada, on August 8-10, 2010. It is jointly organized by the IFIP Working Group 1.2 on Descriptional Complexity and by the Department of Computer Science at the University of Saskatchewan. This volume contains the p... | {
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1008.1284 | Ideal forms of Coppersmith's theorem and Guruswami-Sudan list decoding | [
"math.NT",
"cs.CR",
"cs.IT",
"math.IT"
] | We develop a framework for solving polynomial equations with size constraints on solutions. We obtain our results by showing how to apply a technique of Coppersmith for finding small solutions of polynomial equations modulo integers to analogous problems over polynomial rings, number fields, and function fields. This g... | {
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1008.1309 | Towards arrow-theoretic semantics of ontologies: conceptories | [
"cs.LO",
"cs.AI",
"math.CT"
] | In context of efforts of composing category-theoretic and logical methods in the area of knowledge representation we propose the notion of conceptory. We consider intersection/union and other constructions in conceptories as expressive alternative to category-theoretic (co)limits and show they have features similar to ... | {
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1008.1328 | Semantic Oriented Agent based Approach towards Engineering Data
Management, Web Information Retrieval and User System Communication Problems | [
"cs.AI"
] | The four intensive problems to the software rose by the software industry .i.e., User System Communication / Human Machine Interface, Meta Data extraction, Information processing & management and Data representation are discussed in this research paper. To contribute in the field we have proposed and described an intel... | {
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1008.1333 | An Agent based Approach towards Metadata Extraction, Modelling and
Information Retrieval over the Web | [
"cs.AI"
] | Web development is a challenging research area for its creativity and complexity. The existing raised key challenge in web technology technologic development is the presentation of data in machine read and process able format to take advantage in knowledge based information extraction and maintenance. Currently it is n... | {
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1008.1335 | Designing a Dynamic Components and Agent based Approach for Semantic
Information Retrieval | [
"cs.IR"
] | In this paper based on agent and semantic web technologies we propose an approach .i.e., Semantic Oriented Agent Based Search (SOAS), to cope with currently existing challenges of Meta data extraction, modeling and information retrieval over the web. SOAS is designed by keeping four major requirements .i.e., Automatic ... | {
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1008.1337 | PDM based I-SOAS Data Warehouse Design | [
"cs.DB"
] | This research paper briefly describes the industrial contributions of Product Data Management in any organization's technical and managerial data management. Then focusing on some current major PDM based problems i.e. Static and Unintelligent Search, Platform Independent System and Successful PDM System Implementation,... | {
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1008.1339 | Removal of Communication Gap | [
"cs.DB"
] | This research is about an online forum designed and developed to improve the communication process between alumni, new, old and upcoming students. In this research paper we present targeted problems, designed architecture, used technologies in development and final end product in detail. | {
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1008.1343 | Spectrum of Sizes for Perfect Deletion-Correcting Codes | [
"cs.IT",
"cs.DM",
"math.CO",
"math.IT"
] | One peculiarity with deletion-correcting codes is that perfect $t$-deletion-correcting codes of the same length over the same alphabet can have different numbers of codewords, because the balls of radius $t$ with respect to the Levenshte\u{\i}n distance may be of different sizes. There is interest, therefore, in determ... | {
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1008.1357 | Social Networks and Spin Glasses | [
"cs.SI",
"cs.CY"
] | The networks formed from the links between telephones observed in a month's call detail records (CDRs) in the UK are analyzed, looking for the characteristics thought to identify a communications network or a social network. Some novel methods are employed. We find similarities to both types of network. We conclude tha... | {
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1008.1366 | Efficient Dealiased Convolutions without Padding | [
"cs.CE",
"physics.comp-ph"
] | Algorithms are developed for calculating dealiased linear convolution sums without the expense of conventional zero-padding or phase-shift techniques. For one-dimensional in-place convolutions, the memory requirements are identical with the zero-padding technique, with the important distinction that the additional work... | {
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1008.1387 | Codes over Matrix Rings for Space-Time Coded Modulations | [
"cs.IT",
"math.IT"
] | It is known that, for transmission over quasi-static MIMO fading channels with n transmit antennas, diversity can be obtained by using an inner fully diverse space-time block code while coding gain, derived from the determinant criterion, comes from an appropriate outer code. When the inner code has a cyclic algebra st... | {
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1008.1393 | Towards Nonstationary, Nonparametric Independent Process Analysis with
Unknown Source Component Dimensions | [
"stat.ME",
"cs.IT",
"math.DS",
"math.IT",
"math.ST",
"stat.TH"
] | The goal of this paper is to extend independent subspace analysis (ISA) to the case of (i) nonparametric, not strictly stationary source dynamics and (ii) unknown source component dimensions. We make use of functional autoregressive (fAR) processes to model the temporal evolution of the hidden sources. An extension of ... | {
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1008.1394 | Towards Design and Implementation of a Language Technology based
Information Processor for PDM Systems | [
"cs.IR",
"cs.CL",
"cs.SE"
] | Product Data Management (PDM) aims to provide 'Systems' contributing in industries by electronically maintaining organizational data, improving data repository system, facilitating with easy access to CAD and providing additional information engineering and management modules to access, store, integrate, secure, recove... | {
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1008.1398 | Semi-Supervised Kernel PCA | [
"cs.LG"
] | We present three generalisations of Kernel Principal Components Analysis (KPCA) which incorporate knowledge of the class labels of a subset of the data points. The first, MV-KPCA, penalises within class variances similar to Fisher discriminant analysis. The second, LSKPCA is a hybrid of least squares regression and ker... | {
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1008.1427 | Optimal Feedback Systems with Analogue Adaptive Transmitters | [
"cs.IT",
"math.IT"
] | The paper presents original approach to concurrent optimization of the transmitting and receiving parts of adaptive communication systems (CS) with feedback channels. The results of research show a possibility and the way of designing the systems transmitting the signals with a bit rate equal to the capacity of the for... | {
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1008.1438 | Harmonic Analysis and Qualitative Uncertainty Principle | [
"cs.IT",
"math-ph",
"math.CA",
"math.IT",
"math.MP"
] | This paper investigates the mathematical nature of qualitative uncertainty principle (QUP), which plays an important role in mathematics, physics and engineering fields. Consider a 3-tuple (K, H1, H2) that K: H1 -> H2 is an integral operator. Suppose a signal f in H1, {\Omega}1 and {\Omega}2 are domains on which f, Kf ... | {
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1008.1455 | The Diversity-Multiplexing Tradeoff of the Dynamic Decode-and-Forward
Protocol on a MIMO Half-Duplex Relay Channel | [
"cs.IT",
"math.IT"
] | The diversity-multiplexing tradeoff of the dynamic decode-and-forward protocol is characterized for the half-duplex three-terminal (m,k,n)-relay channel where the source, relay and the destination terminals have m, k and n antennas, respectively. It is obtained as a solution to a simple, two-variable, convex optimizati... | {
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1008.1484 | A note on communicating between information systems based on including
degrees | [
"cs.AI"
] | In order to study the communication between information systems, Gong and Xiao [Z. Gong and Z. Xiao, Communicating between information systems based on including degrees, International Journal of General Systems 39 (2010) 189--206] proposed the concept of general relation mappings based on including degrees. Some prope... | {
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1008.1516 | The Hitchhiker's Guide to Affiliation Networks: A Game-Theoretic
Approach | [
"cs.GT",
"cs.SI"
] | We propose a new class of game-theoretic models for network formation in which strategies are not directly related to edge choices, but instead correspond more generally to the exertion of social effort. The observed social network is thus a byproduct of an expressive strategic interaction, which can more naturally exp... | {
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1008.1566 | Separate Training for Conditional Random Fields Using Co-occurrence Rate
Factorization | [
"cs.LG",
"cs.AI"
] | The standard training method of Conditional Random Fields (CRFs) is very slow for large-scale applications. As an alternative, piecewise training divides the full graph into pieces, trains them independently, and combines the learned weights at test time. In this paper, we present \emph{separate} training for undirecte... | {
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1008.1610 | New Constant-Weight Codes from Propagation Rules | [
"cs.IT",
"cs.DM",
"math.IT"
] | This paper proposes some simple propagation rules which give rise to new binary constant-weight codes. | {
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1008.1611 | Linear Size Optimal q-ary Constant-Weight Codes and Constant-Composition
Codes | [
"cs.IT",
"cs.DM",
"math.CO",
"math.IT"
] | An optimal constant-composition or constant-weight code of weight $w$ has linear size if and only if its distance $d$ is at least $2w-1$. When $d\geq 2w$, the determination of the exact size of such a constant-composition or constant-weight code is trivial, but the case of $d=2w-1$ has been solved previously only for b... | {
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1008.1615 | Optimal Partitioned Cyclic Difference Packings for Frequency Hopping and
Code Synchronization | [
"cs.IT",
"cs.DM",
"math.CO",
"math.IT"
] | Optimal partitioned cyclic difference packings (PCDPs) are shown to give rise to optimal frequency-hopping sequences and optimal comma-free codes. New constructions for PCDPs, based on almost difference sets and cyclic difference matrices, are given. These produce new infinite families of optimal PCDPs (and hence optim... | {
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1008.1617 | Query-Efficient Locally Decodable Codes of Subexponential Length | [
"cs.CC",
"cs.DM",
"cs.IT",
"math.IT",
"math.NT",
"math.RA"
] | We develop the algebraic theory behind the constructions of Yekhanin (2008) and Efremenko (2009), in an attempt to understand the ``algebraic niceness'' phenomenon in $\mathbb{Z}_m$. We show that every integer $m = pq = 2^t -1$, where $p$, $q$ and $t$ are prime, possesses the same good algebraic property as $m=511$ tha... | {
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1008.1643 | A Learning Algorithm based on High School Teaching Wisdom | [
"cs.AI",
"cs.LG"
] | A learning algorithm based on primary school teaching and learning is presented. The methodology is to continuously evaluate a student and to give them training on the examples for which they repeatedly fail, until, they can correctly answer all types of questions. This incremental learning procedure produces better le... | {
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1008.1653 | The Magic Number Problem for Subregular Language Families | [
"cs.FL",
"cs.IT",
"math.IT"
] | We investigate the magic number problem, that is, the question whether there exists a minimal n-state nondeterministic finite automaton (NFA) whose equivalent minimal deterministic finite automaton (DFA) has alpha states, for all n and alpha satisfying n less or equal to alpha less or equal to exp(2,n). A number alpha ... | {
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1008.1659 | The Maximal Subword Complexity of Quasiperiodic Infinite Words | [
"cs.FL",
"cs.DM",
"cs.IT",
"math.IT"
] | We provide an exact estimate on the maximal subword complexity for quasiperiodic infinite words. To this end we give a representation of the set of finite and of infinite words having a certain quasiperiod q via a finite language derived from q. It is shown that this language is a suffix code having a bounded delay of ... | {
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1008.1673 | Space and the Synchronic A-Ram | [
"cs.CL",
"cs.PL"
] | Space is a circuit oriented, spatial programming language designed to exploit the massive parallelism available in a novel formal model of computation called the Synchronic A-Ram, and physically related FPGA and reconfigurable architectures. Space expresses variable grained MIMD parallelism, is modular, strictly typed,... | {
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1008.1674 | Balanced distribution-energy inequalities and related entropy bounds | [
"math.FA",
"cs.IT",
"math.IT",
"math.SP"
] | Let $A$ be a self-adjoint operator acting over a space $X$ endowed with a partition. We give lower bounds on the energy of a mixed state $\rho$ from its distribution in the partition and the spectral density of $A$. These bounds improve with the refinement of the partition, and generalize inequalities by Li-Yau and Lie... | {
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1008.1695 | 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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1008.1710 | Introduction to the 26th International Conference on Logic Programming
Special Issue | [
"cs.AI",
"cs.LO"
] | This is the preface to the 26th International Conference on Logic Programming Special Issue | {
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1008.1715 | The universality of iterated hashing over variable-length strings | [
"cs.DB",
"cs.DS"
] | Iterated hash functions process strings recursively, one character at a time. At each iteration, they compute a new hash value from the preceding hash value and the next character. We prove that iterated hashing can be pairwise independent, but never 3-wise independent. We show that it can be almost universal over stri... | {
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1008.1723 | Role of Ontology in Semantic Web Development | [
"cs.AI"
] | World Wide Web (WWW) is the most popular global information sharing and communication system consisting of three standards .i.e., Uniform Resource Identifier (URL), Hypertext Transfer Protocol (HTTP) and Hypertext Mark-up Language (HTML). Information is provided in text, image, audio and video formats over the web by u... | {
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1008.1744 | High-resolution scalar quantization with R\'enyi entropy constraint | [
"cs.IT",
"math.IT"
] | We consider optimal scalar quantization with $r$th power distortion and constrained R\'enyi entropy of order $\alpha$. For sources with an absolutely continuous distribution the high rate asymptotics of the quantizer distortion has long been known for $\alpha=0$ (fixed-rate quantization) and $\al pha=1$ (entropy-constr... | {
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1008.1766 | Soft-Decoding-Based Strategies for Relay and Interference Channels:
Analysis and Achievable Rates Using LDPC Codes | [
"cs.IT",
"math.IT"
] | We provide a rigorous mathematical analysis of two communication strategies: soft decode-and-forward (soft-DF) for relay channels, and soft partial interference-cancelation (soft-IC) for interference channels. Both strategies involve soft estimation, which assists the decoding process. We consider LDPC codes, not becau... | {
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1008.1770 | A complex network approach to robustness and vulnerability of spatially
organized water distribution networks | [
"physics.soc-ph",
"cs.CE",
"cs.SI",
"math.CO"
] | In this work, water distribution systems are regarded as large sparse planar graphs with complex network characteristics and the relationship between important topological features of the network (i.e. structural robustness and loop redundancy) and system resilience, viewed as the antonym to structural vulnerability, a... | {
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1008.1846 | An algorithmic information-theoretic approach to the behaviour of
financial markets | [
"q-fin.TR",
"cs.CE",
"cs.IT",
"math.IT"
] | Using frequency distributions of daily closing price time series of several financial market indexes, we investigate whether the bias away from an equiprobable sequence distribution found in the data, predicted by algorithmic information theory, may account for some of the deviation of financial markets from log-normal... | {
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1008.1970 | The Shannon Cipher System with a Guessing Wiretapper: General Sources | [
"cs.IT",
"math.IT"
] | The Shannon cipher system is studied in the context of general sources using a notion of computational secrecy introduced by Merhav & Arikan. Bounds are derived on limiting exponents of guessing moments for general sources. The bounds are shown to be tight for iid, Markov, and unifilar sources, thus recovering some kno... | {
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1008.1977 | Guessing Revisited: A Large Deviations Approach | [
"cs.IT",
"math.IT"
] | The problem of guessing a random string is revisited. A close relation between guessing and compression is first established. Then it is shown that if the sequence of distributions of the information spectrum satisfies the large deviation property with a certain rate function, then the limiting guessing exponent exists... | {
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1008.1986 | For the sake of simplicity: Unsupervised extraction of lexical
simplifications from Wikipedia | [
"cs.CL"
] | We report on work in progress on extracting lexical simplifications (e.g., "collaborate" -> "work together"), focusing on utilizing edit histories in Simple English Wikipedia for this task. We consider two main approaches: (1) deriving simplification probabilities via an edit model that accounts for a mixture of differ... | {
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1008.2005 | Approximation Analysis of Influence Spread in Social Networks | [
"cs.DM",
"cs.CC",
"cs.SI"
] | In the context of influence propagation in a social graph, we can identify three orthogonal dimensions - the number of seed nodes activated at the beginning (known as budget), the expected number of activated nodes at the end of the propagation (known as expected spread or coverage), and the time taken for the propagat... | {
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1008.2008 | Rate-Constrained Simulation and Source Coding IID Sources | [
"cs.IT",
"math.IT"
] | Necessary conditions for asymptotically optimal sliding-block or stationary codes for source coding and rate-constrained simulation of memoryless sources are presented and used to motivate a design technique for trellis-encoded source coding and rate-constrained simulation. The code structure has intuitive similarities... | {
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1008.2028 | Discovering shared and individual latent structure in multiple time
series | [
"stat.ML",
"cs.AI",
"stat.ME"
] | This paper proposes a nonparametric Bayesian method for exploratory data analysis and feature construction in continuous time series. Our method focuses on understanding shared features in a set of time series that exhibit significant individual variability. Our method builds on the framework of latent Diricihlet alloc... | {
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} |
1008.2066 | Information transfer with small-amplitude signals | [
"q-bio.NC",
"cs.IT",
"math.IT"
] | We study the optimality conditions of information transfer in systems with memory in the low signal-to-noise ratio regime of vanishing input amplitude. We find that the optimal mutual information is represented by a maximum-variance of the signal time course, with correlation structure determined by the Fisher informat... | {
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1008.2069 | Information capacity in the weak-signal approximation | [
"cs.IT",
"math.IT",
"q-bio.NC"
] | We derive an approximate expression for mutual information in a broad class of discrete-time stationary channels with continuous input, under the constraint of vanishing input amplitude or power. The approximation describes the input by its covariance matrix, while the channel properties are described by the Fisher inf... | {
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1008.2081 | Random Information Spread in Networks | [
"math.CO",
"cs.DM",
"cs.SI",
"math.PR"
] | Let G=(V,E) be an undirected loopless graph with possible parallel edges and s and t be two vertices of G. Assume that vertex s is labelled at the initial time step and that every labelled vertex copies its labelling to neighbouring vertices along edges with one labelled endpoint independently with probability p in one... | {
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1008.2093 | Notes on Lattice-Reduction-Aided MMSE Equalization | [
"cs.IT",
"math.IT"
] | Over the last years, novel low-complexity approaches to the equalization of MIMO channels have gained much attention. Thereby, methods based on lattice basis reduction are of special interest, as they achieve the optimum diversity order. In this paper, a tutorial overview on LRA equalization optimized according to the ... | {
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1008.2121 | Constraint Propagation for First-Order Logic and Inductive Definitions | [
"cs.LO",
"cs.AI"
] | Constraint propagation is one of the basic forms of inference in many logic-based reasoning systems. In this paper, we investigate constraint propagation for first-order logic (FO), a suitable language to express a wide variety of constraints. We present an algorithm with polynomial-time data complexity for constraint ... | {
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1008.2122 | Secret Key and Private Key Constructions for Simple Multiterminal Source
Models | [
"cs.IT",
"cs.CR",
"math.IT"
] | We propose an approach for constructing secret and private keys based on the long-known Slepian-Wolf code, due to Wyner, for correlated sources connected by a virtual additive noise channel. Our work is motivated by results of Csisz\'ar and Narayan which highlight innate connections between secrecy generation by multip... | {
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1008.2147 | Quantum Tagging: Authenticating Location via Quantum Information and
Relativistic Signalling Constraints | [
"quant-ph",
"cs.CR",
"cs.IT",
"math.IT"
] | We define the task of {\it quantum tagging}, that is, authenticating the classical location of a classical tagging device by sending and receiving quantum signals from suitably located distant sites, in an environment controlled by an adversary whose quantum information processing and transmitting power is unbounded. W... | {
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1008.2159 | Submodular Functions: Learnability, Structure, and Optimization | [
"cs.DS",
"cs.DM",
"cs.LG"
] | Submodular functions are discrete functions that model laws of diminishing returns and enjoy numerous algorithmic applications. They have been used in many areas, including combinatorial optimization, machine learning, and economics. In this work we study submodular functions from a learning theoretic angle. We provide... | {
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1008.2160 | An early warning method for crush | [
"cs.MA"
] | Fatal crush conditions occur in crowds with tragic frequency. Event organisers and architects are often criticised for failing to consider the causes and implications of crush, but the reality is that the prediction and mitigation of such conditions offers a significant technical challenge. Full treatment of physical f... | {
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1008.2186 | RDFViewS: A Storage Tuning Wizard for RDF Applications | [
"cs.DB",
"cs.AI"
] | In recent years, the significant growth of RDF data used in numerous applications has made its efficient and scalable manipulation an important issue. In this paper, we present RDFViewS, a system capable of choosing the most suitable views to materialize, in order to minimize the query response time for a specific SPAR... | {
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1008.2247 | Symmetry and Uncountability of Computation | [
"cs.CC",
"cs.IT",
"math.IT"
] | This paper talk about the complexity of computation by Turing Machine. I take attention to the relation of symmetry and order structure of the data, and I think about the limitation of computation time. First, I make general problem named "testing problem". And I get some condition of the P complete and NP complete by ... | {
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1008.2266 | Achievable Rates and Upper bounds for the Interference Relay Channel | [
"cs.IT",
"math.IT"
] | The two user Gaussian interference channel with a full-duplex relay is studied. By using genie aided approaches, two new upper bounds on the achievable sum-rate in this setup are derived. These upper bounds are shown to be tighter than previously known bounds under some conditions. Moreover, a transmit strategy for thi... | {
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1008.2277 | Faithfulness in Chain Graphs: The Gaussian Case | [
"stat.ML",
"cs.AI",
"math.ST",
"stat.TH"
] | This paper deals with chain graphs under the classic Lauritzen-Wermuth-Frydenberg interpretation. We prove that the regular Gaussian distributions that factorize with respect to a chain graph $G$ with $d$ parameters have positive Lebesgue measure with respect to $\mathbb{R}^d$, whereas those that factorize with respect... | {
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1008.2297 | An MGF-based Unified Framework to Determine the Joint Statistics of
Partial Sums of Ordered Random Variables | [
"cs.IT",
"math.IT"
] | Order statistics find applications in various areas of communications and signal processing. In this paper, we introduce an unified analytical framework to determine the joint statistics of partial sums of ordered random variables (RVs). With the proposed approach, we can systematically derive the joint statistics of a... | {
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1008.2300 | Probabilistic Frequent Pattern Growth for Itemset Mining in Uncertain
Databases (Technical Report) | [
"cs.DB"
] | Frequent itemset mining in uncertain transaction databases semantically and computationally differs from traditional techniques applied on standard (certain) transaction databases. Uncertain transaction databases consist of sets of existentially uncertain items. The uncertainty of items in transactions makes traditiona... | {
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1008.2313 | Lagrangian method for solving Lane-Emden type equation arising in
astrophysics on semi-infinite domains | [
"math-ph",
"astro-ph.IM",
"cs.CE",
"math.MP",
"math.NA"
] | In this paper we propose a Lagrangian method for solving Lane-Emden equation which is a nonlinear ordinary differential equation on semi-infinite interval. This approach is based on a Modified generalized Laguerre functions Lagrangian method. The method reduces the solution of this problem to the solution of a system o... | {
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1008.2322 | An approximate solution of the MHD Falkner-Skan flow by Hermite
functions pseudospectral method | [
"math-ph",
"cs.CE",
"math.MP",
"math.NA",
"physics.comp-ph",
"physics.flu-dyn"
] | Based on a new approximation method, namely pseudospectral method, a solution for the three order nonlinear ordinary differential laminar boundary layer Falkner-Skan equation has been obtained on the semi-infinite domain. The proposed approach is equipped by the orthogonal Hermite functions that have perfect properties... | {
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1008.2337 | Numerical approximations for population growth model by Rational
Chebyshev and Hermite Functions collocation approach: A comparison | [
"math-ph",
"cs.CE",
"math.MP",
"math.NA"
] | This paper aims to compare rational Chebyshev (RC) and Hermite functions (HF) collocation approach to solve the Volterra's model for population growth of a species within a closed system. This model is a nonlinear integro-differential equation where the integral term represents the effect of toxin. This approach is bas... | {
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1008.2348 | Comparison between two common collocation approaches based on radial
basis functions for the case of heat transfer equations arising in porous
medium | [
"math-ph",
"cs.CE",
"math.MP",
"math.NA",
"physics.comp-ph"
] | In this paper two common collocation approaches based on radial basis functions have been considered; one be computed through the integration process (IRBF) and one be computed through the differentiation process (DRBF). We investigated the two approaches on natural convection heat transfer equations embedded in porous... | {
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1008.2368 | Construction of Rational Surfaces Yielding Good Codes | [
"math.AG",
"cs.IT",
"math.IT",
"math.NT"
] | In the present article, we consider Algebraic Geometry codes on some rational surfaces. The estimate of the minimum distance is translated into a point counting problem on plane curves. This problem is solved by applying the upper bound "\`a la Weil" of Aubry and Perret together with the bound of Homma and Kim for plan... | {
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1008.2386 | Linear Precoding in Cooperative MIMO Cellular Networks with Limited
Coordination Clusters | [
"cs.IT",
"math.IT"
] | In a cooperative multiple-antenna downlink cellular network, maximization of a concave function of user rates is considered. A new linear precoding technique called soft interference nulling (SIN) is proposed, which performs at least as well as zero-forcing (ZF) beamforming. All base stations share channel state inform... | {
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1008.2410 | Removing the Barrier to Scalability in Parallel FMM | [
"cs.CE",
"cs.NA",
"physics.comp-ph"
] | The Fast Multipole Method (FMM) is well known to possess a bottleneck arising from decreasing workload on higher levels of the FMM tree [Greengard and Gropp, Comp. Math. Appl., 20(7), 1990]. We show that this potential bottleneck can be eliminated by overlapping multipole and local expansion computations with direct ke... | {
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1008.2412 | Discover & eXplore Neural Network (DXNN) Platform, a Modular TWEANN | [
"cs.NE",
"cond-mat.dis-nn"
] | In this paper I present a novel type of Topology and Weight Evolving Artificial Neural Network (TWEANN) system called Modular Discover & eXplore Neural Network (DXNN). Modular DXNN utilizes a hierarchical/modular topology which allows for highly scalable and dynamically granular systems to evolve. Among the novel featu... | {
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1008.2514 | Epistemic irrelevance in credal nets: the case of imprecise Markov trees | [
"cs.AI",
"math.PR",
"stat.ML"
] | We focus on credal nets, which are graphical models that generalise Bayesian nets to imprecise probability. We replace the notion of strong independence commonly used in credal nets with the weaker notion of epistemic irrelevance, which is arguably more suited for a behavioural theory of probability. Focusing on direct... | {
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1008.2526 | Low ML Decoding Complexity STBCs via Codes over GF(4) | [
"cs.IT",
"math.IT"
] | In this paper, we give a new framework for constructing low ML decoding complexity Space-Time Block Codes (STBCs) using codes over the finite field $\mathbb{F}_4$. Almost all known low ML decoding complexity STBCs can be obtained via this approach. New full-diversity STBCs with low ML decoding complexity and cubic shap... | {
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1008.2529 | Quantum f-divergences and error correction | [
"math-ph",
"cs.IT",
"math.IT",
"math.MP",
"quant-ph"
] | Quantum f-divergences are a quantum generalization of the classical notion of f-divergences, and are a special case of Petz' quasi-entropies. Many well known distinguishability measures of quantum states are given by, or derived from, f-divergences; special examples include the quantum relative entropy, the Renyi relat... | {
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1008.2565 | Multigraph Sampling of Online Social Networks | [
"cs.NI",
"cs.DS",
"cs.SI",
"physics.data-an",
"stat.ME"
] | State-of-the-art techniques for probability sampling of users of online social networks (OSNs) are based on random walks on a single social relation (typically friendship). While powerful, these methods rely on the social graph being fully connected. Furthermore, the mixing time of the sampling process strongly depends... | {
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1008.2571 | Cooperative Secret Communication with Artificial Noise in Symmetric
Interference Channel | [
"cs.IT",
"math.IT"
] | We consider the symmetric Gaussian interference channel where two users try to enhance their secrecy rates in a cooperative manner. Artificial noise is introduced along with useful information. We derive the power control and artificial noise parameter for two kinds of optimal points, max-min point and single user poin... | {
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1008.2579 | Homotopy Perturbation Method for Image Restoration and Denoising | [
"cs.CV",
"cs.NA",
"math.AP",
"math.NA"
] | The famous Perona-Malik (P-M) equation which was at first introduced for image restoration has been solved via various numerical methods. In this paper we will solve it for the first time via applying a new numerical method called Homotopy Perturbation Method (HMP) and the correspondent approximated solutions will be o... | {
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1008.2581 | The LASSO risk for gaussian matrices | [
"math.ST",
"cs.IT",
"math.IT",
"stat.TH"
] | We consider the problem of learning a coefficient vector x_0\in R^N from noisy linear observation y=Ax_0+w \in R^n. In many contexts (ranging from model selection to image processing) it is desirable to construct a sparse estimator x'. In this case, a popular approach consists in solving an L1-penalized least squares p... | {
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1008.2613 | Joint maximum likelihood estimation of carrier and sampling frequency
offsets for OFDM systems | [
"cs.IT",
"math.IT"
] | In orthogonal-frequency division multiplexing (OFDM) systems, carrier and sampling frequency offsets (CFO and SFO, respectively) can destroy the orthogonality of the subcarriers and degrade system performance. In the literature, Nguyen-Le, Le-Ngoc, and Ko proposed a simple maximum-likelihood (ML) scheme using two long ... | {
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1008.2626 | Mining tree-query associations in graphs | [
"cs.DB",
"cs.AI"
] | New applications of data mining, such as in biology, bioinformatics, or sociology, are faced with large datasetsstructured as graphs. We introduce a novel class of tree-shapedpatterns called tree queries, and present algorithms for miningtree queries and tree-query associations in a large data graph. Novel about our cl... | {
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1008.2743 | PMOG: The projected mixture of Gaussians model with application to blind
source separation | [
"stat.ML",
"cs.AI",
"stat.ME"
] | We extend the mixtures of Gaussians (MOG) model to the projected mixture of Gaussians (PMOG) model. In the PMOG model, we assume that q dimensional input data points z_i are projected by a q dimensional vector w into 1-D variables u_i. The projected variables u_i are assumed to follow a 1-D MOG model. In the PMOG model... | {
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} |
1008.2750 | On BICM receivers for TCM transmission | [
"cs.IT",
"math.IT"
] | Recent results have shown that the performance of bit-interleaved coded modulation (BICM) using convolutional codes in nonfading channels can be significantly improved when the interleaver takes a trivial form (BICM-T), i.e., when it does not interleave the bits at all. In this paper, we give a formal explanation for t... | {
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} |
1008.2857 | Bidirectional multi-pair network with a MIMO relay: Beamforming
strategies and lack of duality | [
"cs.IT",
"math.IT"
] | We address the problem of a multi-user relay network, where multiple single-antenna node pairs want to exchange information by using a multiple antenna relay node. Due to the half-duplex constraint of the relay, the exchange of information takes place in two steps. In the first step, the nodes transmit their data to th... | {
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} |
1008.2873 | Compressive Channel Estimation for Two-way Relay Network in a
Frequency-Selective Channel with Compressed Sensing | [
"cs.IT",
"math.IT"
] | Two-way relay network (TWRN) was introduced to realize high-data rate transmission over the wireless frequency-selective channel. However, TWRC requires the knowledge of channel state information (CSI) not only for coherent data detection but also for the self-data removal. This is partial accomplished by training sequ... | {
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} |
1008.2972 | Algebraic Signal Processing Theory: Cooley-Tukey Type Algorithms for
Polynomial Transforms Based on Induction | [
"cs.IT",
"math.IT",
"math.RA"
] | A polynomial transform is the multiplication of an input vector $x\in\C^n$ by a matrix $\PT_{b,\alpha}\in\C^{n\times n},$ whose $(k,\ell)$-th element is defined as $p_\ell(\alpha_k)$ for polynomials $p_\ell(x)\in\C[x]$ from a list $b=\{p_0(x),\dots,p_{n-1}(x)\}$ and sample points $\alpha_k\in\C$ from a list $\alpha=\{\... | {
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1008.2996 | Sparsity-Cognizant Total Least-Squares for Perturbed Compressive
Sampling | [
"cs.IT",
"math.IT"
] | Solving linear regression problems based on the total least-squares (TLS) criterion has well-documented merits in various applications, where perturbations appear both in the data vector as well as in the regression matrix. However, existing TLS approaches do not account for sparsity possibly present in the unknown vec... | {
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"cs.NE": 0,
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1008.3035 | Achievable Rates in Two-user Interference Channels with Finite Inputs
and (Very) Strong Interference | [
"cs.IT",
"math.IT"
] | For two-user interference channels, the capacity is known for the case where interference is stronger than the desired signal. Moreover, it is known that if the interference is above a certain level, it does not reduce the capacity at all. To achieve this capacity, the channel inputs need to be Gaussian distributed. Ho... | {
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} |
1008.3043 | Learning Functions of Few Arbitrary Linear Parameters in High Dimensions | [
"math.NA",
"cs.CC",
"cs.LG",
"stat.ML"
] | Let us assume that $f$ is a continuous function defined on the unit ball of $\mathbb R^d$, of the form $f(x) = g (A x)$, where $A$ is a $k \times d$ matrix and $g$ is a function of $k$ variables for $k \ll d$. We are given a budget $m \in \mathbb N$ of possible point evaluations $f(x_i)$, $i=1,...,m$, of $f$, which we ... | {
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1008.3056 | On the Performance of Spectrum Sensing Algorithms using Multiple
Antennas | [
"cs.IT",
"math.IT",
"stat.AP"
] | In recent years, some spectrum sensing algorithms using multiple antennas, such as the eigenvalue based detection (EBD), have attracted a lot of attention. In this paper, we are interested in deriving the asymptotic distributions of the test statistics of the EBD algorithms. Two EBD algorithms using sample covariance m... | {
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} |
1008.3136 | MIMO Precoding Using Rotating Codebooks | [
"cs.IT",
"math.IT"
] | Next generation wireless communications rely on multiple input multiple output (MIMO) techniques to achieve high data rates. Feedback of channel information can be used in MIMO precoding to fully activate the strongest channel modes and improve MIMO performance. Unfortunately, the bandwidth of the control channel via w... | {
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} |
1008.3146 | Exact Localization and Superresolution with Noisy Data and Random
Illumination | [
"cs.IT",
"math.IT",
"math.PR",
"physics.data-an",
"physics.optics"
] | This paper studies the problem of exact localization of sparse (point or extended) objects with noisy data. The crux of the proposed approach consists of random illumination. Several recovery methods are analyzed: the Lasso, BPDN and the One-Step Thresholding (OST). For independent random probes, it is shown that both ... | {
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"cs.SY": 0
} |
1008.3147 | Proceedings First Workshop on Applications of Membrane computing,
Concurrency and Agent-based modelling in POPulation biology | [
"cs.CE",
"cs.MA"
] | This volume contains the papers presented at the first International Workshop on Applications of Membrane Computing, Concurrency and Agent-based Modelling in Population Biology (AMCA-POP 2010) held in Jena, Germany on August 25th, 2010 as a satellite event of the 11th Conference on Membrane Computing (CMC11). The aim... | {
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} |
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