id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1103.4086 | Lattice Codes for the Wiretap Gaussian Channel: Construction and
Analysis | [
"cs.IT",
"math.IT"
] | We consider the Gaussian wiretap channel, where two legitimate players Alice and Bob communicate over an additive white Gaussian noise (AWGN) channel, while Eve is eavesdropping, also through an AWGN channel. We propose a coding strategy based on lattice coset encoding. We analyze Eve's probability of decoding, from wh... | {
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1103.4090 | A Linear Classifier Based on Entity Recognition Tools and a Statistical
Approach to Method Extraction in the Protein-Protein Interaction Literature | [
"q-bio.QM",
"cs.CL",
"cs.IR",
"cs.LG"
] | We participated, in the Article Classification and the Interaction Method subtasks (ACT and IMT, respectively) of the Protein-Protein Interaction task of the BioCreative III Challenge. For the ACT, we pursued an extensive testing of available Named Entity Recognition and dictionary tools, and used the most promising on... | {
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1103.4168 | Caching in Multidimensional Databases | [
"cs.DB"
] | One utilisation of multidimensional databases is the field of On-line Analytical Processing (OLAP). The applications in this area are designed to make the analysis of shared multidimensional information fast [9]. On one hand, speed can be achieved by specially devised data structures and algorithms. On the other hand, ... | {
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1103.4169 | Difference-Huffman Coding of Multidimensional Databases | [
"cs.DB"
] | A new compression method called difference-Huffman coding (DHC) is introduced in this paper. It is verified empirically that DHC results in a smaller multidimensional physical representation than those for other previously published techniques (single count header compression, logical position compression, base-offset ... | {
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1103.4177 | On the Capacity of the Noncausal Relay Channel | [
"cs.IT",
"math.IT"
] | This paper studies the noncausal relay channel, also known as the relay channel with unlimited lookahead, introduced by El Gamal, Hassanpour, and Mammen. Unlike the standard relay channel model, where the relay encodes its signal based on the previous received output symbols, the relay in the noncausal relay channel en... | {
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1103.4198 | Continuous-time performance limitations for overshoot and resulted
tracking measures | [
"math.OC",
"cs.SY"
] | A dual formulation for the problem of determining absolute performance limitations on overshoot, undershoot, maximum amplitude and fluctuation minimization for continuous-time feedback systems is constructed. Determining, for example, the minimum possible overshoot attainable by all possible stabilizing controllers is ... | {
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1103.4204 | Parallel Online Learning | [
"cs.LG"
] | In this work we study parallelization of online learning, a core primitive in machine learning. In a parallel environment all known approaches for parallel online learning lead to delayed updates, where the model is updated using out-of-date information. In the worst case, or when examples are temporally correlated, de... | {
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1103.4223 | A Stochastic-Geometry Approach to Coverage in Cellular Networks with
Multi-Cell Cooperation | [
"cs.IT",
"math.IT"
] | Multi-cell cooperation is a promising approach for mitigating inter-cell interference in dense cellular networks. Quantifying the performance of multi-cell cooperation is challenging as it integrates physical-layer techniques and network topologies. For tractability, existing work typically relies on the over-simplifie... | {
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1103.4282 | Stratified B-trees and versioning dictionaries | [
"cs.DS",
"cs.DB"
] | A classic versioned data structure in storage and computer science is the copy-on-write (CoW) B-tree -- it underlies many of today's file systems and databases, including WAFL, ZFS, Btrfs and more. Unfortunately, it doesn't inherit the B-tree's optimality properties; it has poor space utilization, cannot offer fast upd... | {
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1103.4286 | Design and frequency analysis of continuous finite-time-convergent
differentiator | [
"cs.SY",
"math.DS",
"math.OC"
] | In this paper, a continuous finite-time-convergent differentiator is presented based on a strong Lyapunov function. The continuous differentiator can reduce chattering phenomenon sufficiently than normal sliding mode differentiator, and the outputs of signal tracking and derivative estimation are all smooth. Frequency ... | {
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1103.4311 | Design and analysis of continuous hybrid differentiator | [
"cs.SY",
"math.DS",
"math.OC"
] | In this paper, a continuous hybrid differentiator is presented based on a strong Lyapunov function. The differentiator design can not only reduce sufficiently chattering phenomenon of derivative estimation by introducing a perturbation parameter, but also the dynamical performances are improved by adding linear correct... | {
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1103.4335 | Diviseurs de la forme 2D-G sans sections et rang de la multiplication
dans les corps finis (Divisors of the form 2D-G without sections and bilinear
complexity of multiplication in finite fields) | [
"math.AG",
"cs.CC",
"cs.IT",
"math.IT",
"math.NT"
] | Let X be an algebraic curve, defined over a perfect field, and G a divisor on X. If X has sufficiently many points, we show how to construct a divisor D on X such that l(2D-G)=0, of essentially any degree such that this is compatible the Riemann-Roch theorem. We also generalize this construction to the case of a finite... | {
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1103.4339 | Optimal allocation patterns and optimal seed mass of a perennial plant | [
"q-bio.PE",
"cs.SY",
"math.OC"
] | We present a novel optimal allocation model for perennial plants, in which assimilates are not allocated directly to vegetative or reproductive parts but instead go first to a storage compartment from where they are then optimally redistributed. We do not restrict considerations purely to periods favourable for photosy... | {
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1103.4340 | Fault Tolerant Stabilizability of Multi-Hop Control Networks | [
"math.OC",
"cs.SY"
] | A Multi-hop Control Network (MCN) consists of a plant where the communication between sensor, actuator and computational unit is supported by a wireless multi-hop communication network, and data flow is performed using scheduling and routing of sensing and actuation data. We address the problem of characterizing contro... | {
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1103.4342 | MDP Optimal Control under Temporal Logic Constraints | [
"cs.RO",
"cs.SY",
"math.OC"
] | In this paper, we develop a method to automatically generate a control policy for a dynamical system modeled as a Markov Decision Process (MDP). The control specification is given as a Linear Temporal Logic (LTL) formula over a set of propositions defined on the states of the MDP. We synthesize a control policy such th... | {
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1103.4358 | Selfishness, fraternity, and other-regarding preference in spatial
evolutionary games | [
"physics.soc-ph",
"cs.SI",
"q-bio.PE"
] | Spatial evolutionary games are studied with myopic players whose payoff interest, as a personal character, is tuned from selfishness to other-regarding preference via fraternity. The players are located on a square lattice and collect income from symmetric two-person two-strategy (called cooperation and defection) game... | {
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1103.4395 | On Non-Bayesian Social Learning | [
"cs.SI",
"physics.soc-ph"
] | We study a model of information aggregation and social learning recently proposed by Jadbabaie, Sandroni, and Tahbaz-Salehi, in which individual agents try to learn a correct state of the world by iteratively updating their beliefs using private observations and beliefs of their neighbors. No individual agent's private... | {
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1103.4401 | On the gradual deployment of random pairwise key distribution schemes
(Extended Version) | [
"cs.CR",
"cs.DM",
"cs.IT",
"math.IT"
] | In the context of wireless sensor networks, the pairwise key distribution scheme of Chan et al. has several advantages over other key distribution schemes including the original scheme of Eschenauer and Gligor. However, this offline pairwise key distribution mechanism requires that the network size be set in advance, a... | {
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1103.4406 | Interference Alignment with Partially Coordinated Transmit Precoding | [
"cs.IT",
"math.IT"
] | In this paper, we introduce an efficient interference alignment (IA) algorithm exploiting partially coordinated transmit precoding to improve the number of concurrent interference-free transmissions, i.e., the multiplexing gain, in multicell downlink. The proposed coordination model is such that each base-station simul... | {
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1103.4410 | Distributed Inference and Query Processing for RFID Tracking and
Monitoring | [
"cs.DB"
] | In this paper, we present the design of a scalable, distributed stream processing system for RFID tracking and monitoring. Since RFID data lacks containment and location information that is key to query processing, we propose to combine location and containment inference with stream query processing in a single archite... | {
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1103.4435 | Information Theoretic Bounds for Tensor Rank Minimization over Finite
Fields | [
"cs.IT",
"math.IT"
] | We consider the problem of noiseless and noisy low-rank tensor completion from a set of random linear measurements. In our derivations, we assume that the entries of the tensor belong to a finite field of arbitrary size and that reconstruction is based on a rank minimization framework. The derived results show that the... | {
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1103.4438 | Anytime Reliable Codes for Stabilizing Plants over Erasure Channels | [
"cs.SY",
"cs.IT",
"math.IT",
"math.OC"
] | The problem of stabilizing an unstable plant over a noisy communication link is an increasingly important one that arises in problems of distributed control and networked control systems. Although the work of Schulman and Sahai over the past two decades, and their development of the notions of "tree codes" and "anytime... | {
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1103.4454 | Regularity Results for Eikonal-Type Equations with Nonsmooth
Coefficients | [
"math.OC",
"cs.SY",
"math.AP"
] | Solutions of the Hamilton-Jacobi equation $H(x,-Du(x))=1$, with $H(\cdot,p)$ H\"older continuous and $H(x,\cdot)$ convex and positively homogeneous of degree 1, are shown to be locally semiconcave with a power-like modulus. An essential step of the proof is the ${\mathcal C}^{1,\alpha}$-regularity of the extremal traje... | {
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1103.4480 | Clustered regression with unknown clusters | [
"cs.LG",
"stat.ML"
] | We consider a collection of prediction experiments, which are clustered in the sense that groups of experiments ex- hibit similar relationship between the predictor and response variables. The experiment clusters as well as the regres- sion relationships are unknown. The regression relation- ships define the experiment... | {
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1103.4487 | Handwritten Digit Recognition with a Committee of Deep Neural Nets on
GPUs | [
"cs.LG",
"cs.AI",
"cs.CV",
"cs.NE"
] | The competitive MNIST handwritten digit recognition benchmark has a long history of broken records since 1998. The most recent substantial improvement by others dates back 7 years (error rate 0.4%) . Recently we were able to significantly improve this result, using graphics cards to greatly speed up training of simple ... | {
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1103.4525 | Robust Lattice Alignment for K-user MIMO Interference Channels with
Imperfect Channel Knowledge | [
"cs.IT",
"math.IT"
] | In this paper, we consider a robust lattice alignment design for K-user quasi-static MIMO interference channels with imperfect channel knowledge. With random Gaussian inputs, the conventional interference alignment (IA) method has the feasibility problem when the channel is quasi-static. On the other hand, structured l... | {
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1103.4547 | Canonical Dual Method for Resource Allocation and Adaptive Modulation in
Uplink SC-FDMA Systems | [
"cs.IT",
"math.IT"
] | In this paper, we study resource allocation and adaptive modulation in SC-FDMA which is adopted as the multiple access scheme for the uplink in the 3GPP-LTE standard. A sum-utility maximization (SUmax), and a joint adaptive modulation and sum-cost minimization (JAMSCmin) problems are considered. Unlike OFDMA, in additi... | {
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1103.4550 | Community Detection via Semi-Synchronous Label Propagation Algorithms | [
"cs.SI",
"physics.soc-ph"
] | A recently introduced novel community detection strategy is based on a label propagation algorithm (LPA) which uses the diffusion of information in the network to identify communities. Studies of LPAs showed that the strategy is effective in finding a good community structure. Label propagation step can be performed in... | {
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1103.4558 | Representing First-Order Causal Theories by Logic Programs | [
"cs.AI",
"cs.LO"
] | Nonmonotonic causal logic, introduced by Norman McCain and Hudson Turner, became a basis for the semantics of several expressive action languages. McCain's embedding of definite propositional causal theories into logic programming paved the way to the use of answer set solvers for answering queries about actions descri... | {
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1103.4578 | Common Signal Analysis | [
"cs.IT",
"math.IT"
] | A common signal is defined for any two signals which have non-zero correlation. A mathematical method is provided to extract the best obtainable common signal between the two signals. This analysis is extended to extracting common signal among three signals. | {
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1103.4584 | Automatic Synthesis of Switching Controllers for Linear Hybrid Automata | [
"cs.LO",
"cs.FL",
"cs.SY",
"math.OC"
] | In this paper we study the problem of automatically generating switching controllers for the class of Linear Hybrid Automata, with respect to safety objectives. We identify and solve inaccuracies contained in previous characterizations of the problem, providing a sound and complete symbolic fixpoint procedure, based on... | {
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1103.4601 | Doubly Robust Policy Evaluation and Learning | [
"cs.LG",
"cs.AI",
"cs.RO",
"stat.AP",
"stat.ML"
] | We study decision making in environments where the reward is only partially observed, but can be modeled as a function of an action and an observed context. This setting, known as contextual bandits, encompasses a wide variety of applications including health-care policy and Internet advertising. A central task is eval... | {
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1103.4659 | Social Influencing and Associated Random Walk Models: Asymptotic
Consensus Times on the Complete Graph | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | We investigate consensus formation and the asymptotic consensus times in stylized individual- or agent-based models, in which global agreement is achieved through pairwise negotiations with or without a bias. Considering a class of individual-based models on finite complete graphs, we introduce a coarse-graining approa... | {
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1103.4684 | Vector Broadcast Channels: Optimality of Threshold Feedback Policies | [
"cs.IT",
"math.IT"
] | Beamforming techniques utilizing only partial channel state information (CSI) has gained popularity over other communication strategies requiring perfect CSI thanks to their lower feedback requirements. The amount of feedback in beamforming based communication systems can be further reduced through selective feedback t... | {
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1103.4687 | Vector Broadcast Channels: Optimal Threshold Selection Problem | [
"cs.IT",
"math.IT"
] | Threshold feedback policies are well known and provably rate-wise optimal selective feedback techniques for communication systems requiring partial channel state information (CSI). However, optimal selection of thresholds at mobile users to maximize information theoretic data rates subject to feedback constraints is an... | {
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1103.4720 | Computer Modelling of 3D Geological Surface | [
"cs.CE"
] | The geological surveying presently uses methods and tools for the computer modeling of 3D-structures of the geographical subsurface and geotechnical characterization as well as the application of geoinformation systems for management and analysis of spatial data, and their cartographic presentation. The objectives of t... | {
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1103.4723 | Automatic Extraction of Open Space Area from High Resolution Urban
Satellite Imagery | [
"cs.CV"
] | In the 21st century, Aerial and satellite images are information rich. They are also complex to analyze. For GIS systems, many features require fast and reliable extraction of open space area from high resolution satellite imagery. In this paper we will study efficient and reliable automatic extraction algorithm to fin... | {
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1103.4756 | Identification of Piecewise Linear Models of Complex Dynamical Systems | [
"math.OC",
"cs.SY"
] | The paper addresses the realization and identification problem or a subclass of piecewise-affine hybrid systems. The paper provides necessary and sufficient conditions for existence of a realization, a characterization of minimality, and an identification algorithm for this subclass of hybrid systems. The considered sy... | {
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1103.4767 | A comparison of Gap statistic definitions with and without logarithm
function | [
"stat.ME",
"cs.CV"
] | The Gap statistic is a standard method for determining the number of clusters in a set of data. The Gap statistic standardizes the graph of $\log(W_{k})$, where $W_{k}$ is the within-cluster dispersion, by comparing it to its expectation under an appropriate null reference distribution of the data. We suggest to use $W... | {
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1103.4774 | Full-Rate Full-Diversity Achieving MIMO Precoding with Partial CSIT | [
"cs.IT",
"math.IT"
] | In this paper, we consider a $n_t\times n_r$ multiple-input multiple-output (MIMO) channel subjected to block fading. Reliability (in terms of achieved diversity order) and rate (in number of symbols transmitted per channel use) are of interest in such channels. We propose a new precoding scheme which achieves both ful... | {
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1103.4778 | Formal and Computational Properties of the Confidence Boost of
Association Rules | [
"cs.DB",
"cs.AI"
] | Some existing notions of redundancy among association rules allow for a logical-style characterization and lead to irredundant bases of absolutely minimum size. One can push the intuition of redundancy further and find an intuitive notion of interest of an association rule, in terms of its "novelty" with respect to oth... | {
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1103.4784 | Latent Capacity Region: A Case Study on Symmetric Broadcast With Common
Messages | [
"cs.IT",
"math.IT"
] | We consider the problem of broadcast with common messages, and focus on the case that the common message rate $R_{\mathcal{A}}$, i.e., the rate of the message intended for all the receivers in the set $\mathcal{A}$, is the same for all the set $\mathcal{A}$ of the same cardinality. Instead of attempting to characterize... | {
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1103.4787 | Energy Management Policies for Energy-Neutral Source-Channel Coding | [
"cs.IT",
"math.IT"
] | In cyber-physical systems where sensors measure the temporal evolution of a given phenomenon of interest and radio communication takes place over short distances, the energy spent for source acquisition and compression may be comparable with that used for transmission. Additionally, in order to avoid limited lifetime i... | {
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1103.4820 | Design and classification of dynamic multi-objective optimization
problems | [
"cs.NE"
] | In this work we provide a formal model for the different time-dependent components that can appear in dynamic multi-objective optimization problems, along with a classification of these components. Four main classes are identified, corresponding to the influence of the parameters, objective functions, previous states o... | {
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1103.4854 | When is social computation better than the sum of its parts? | [
"cs.IT",
"cs.AI",
"math.IT"
] | Social computation, whether in the form of searches performed by swarms of agents or collective predictions of markets, often supplies remarkably good solutions to complex problems. In many examples, individuals trying to solve a problem locally can aggregate their information and work together to arrive at a superior ... | {
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1103.4888 | Cooperative searching for stochastic targets | [
"cs.IT",
"cs.AI",
"math.IT"
] | Spatial search problems abound in the real world, from locating hidden nuclear or chemical sources to finding skiers after an avalanche. We exemplify the formalism and solution for spatial searches involving two agents that may or may not choose to share information during a search. For certain classes of tasks, sharin... | {
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1103.4893 | Robust Distributed Routing in Dynamical Flow Networks - Part II: Strong
Resilience, Equilibrium Selection and Cascaded Failures | [
"cs.SY",
"math.CA",
"math.DS",
"math.OC",
"nlin.AO"
] | Strong resilience properties of dynamical flow networks are analyzed for distributed routing policies. The latter are characterized by the property that the way the inflow at a non-destination node gets split among its outgoing links is allowed to depend only on local information about the current particle densities on... | {
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1103.4896 | Classification of Sets using Restricted Boltzmann Machines | [
"cs.LG",
"stat.ML"
] | We consider the problem of classification when inputs correspond to sets of vectors. This setting occurs in many problems such as the classification of pieces of mail containing several pages, of web sites with several sections or of images that have been pre-segmented into smaller regions. We propose generalizations o... | {
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1103.4904 | Distribution-Independent Evolvability of Linear Threshold Functions | [
"cs.LG",
"cs.CC",
"cs.NE"
] | Valiant's (2007) model of evolvability models the evolutionary process of acquiring useful functionality as a restricted form of learning from random examples. Linear threshold functions and their various subclasses, such as conjunctions and decision lists, play a fundamental role in learning theory and hence their evo... | {
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1103.4913 | Automatic Open Space Area Extraction and Change Detection from High
Resolution Urban Satellite Images | [
"cs.CV"
] | In this paper, we study efficient and reliable automatic extraction algorithm to find out the open space area from the high resolution urban satellite imagery, and to detect changes from the extracted open space area during the period 2003, 2006 and 2008. This automatic extraction and change detection algorithm uses so... | {
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1103.4916 | Detection of Spatial Changes using Spatial Data Mining | [
"cs.DB"
] | The Change detection based on analysis and samples are analyzed. Land use/cover change detection based on SDM is discussed. | {
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1103.4919 | Link Prediction in Complex Networks: A Clustering Perspective | [
"cs.SI",
"physics.soc-ph"
] | Link prediction is an open problem in the complex network, which attracts much research interest currently. However, little attention has been paid to the relation between network structure and the performance of prediction methods. In order to fill this vital gap, we try to understand how the network structure affects... | {
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1103.4951 | Exact Reconstruction using Beurling Minimal Extrapolation | [
"math.ST",
"cs.IT",
"math.IT",
"math.OC",
"math.PR",
"stat.TH"
] | We show that measures with finite support on the real line are the unique solution to an algorithm, named generalized minimal extrapolation, involving only a finite number of generalized moments (which encompass the standard moments, the Laplace transform, the Stieltjes transformation, etc). Generalized minimal extrapo... | {
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1103.4959 | On mean-square boundedness of stochastic linear systems with quantized
observations | [
"math.OC",
"cs.SY"
] | We propose a procedure to design a state-quantizer with finitely many bins for a marginally stable stochastic linear system evolving in $\R^d$, and a bounded policy based on the resulting quantized state measurements to ensure bounded second moment in closed-loop. | {
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1103.4977 | Statistical Inference for R\'enyi Entropy Functionals | [
"math.ST",
"cs.IT",
"math.IT",
"stat.TH"
] | Numerous entropy-type characteristics (functionals) generalizing R\'enyi entropy are widely used in mathematical statistics, physics, information theory, and signal processing for characterizing uncertainty in probability distributions and distribution identification problems. We consider estimators of some entropy (in... | {
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1103.4979 | An Introduction to Functional dependency in Relational Databases | [
"cs.DB"
] | This write-up is the suggested lecture notes for a second level course on advanced topics in database systems for master's students of Computer Science with a theoretical focus. A prerequisite in algorithms and an exposure to database systems are required. Additional reading may require exposure to mathematical logic. ... | {
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1103.5002 | User Modeling Combining Access Logs, Page Content and Semantics | [
"cs.IR",
"cs.AI",
"cs.HC"
] | The paper proposes an approach to modeling users of large Web sites based on combining different data sources: access logs and content of the accessed pages are combined with semantic information about the Web pages, the users and the accesses of the users to the Web site. The assumption is that we are dealing with a l... | {
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1103.5027 | Google matrix of the world trade network | [
"q-fin.GN",
"cond-mat.stat-mech",
"cs.SI",
"physics.soc-ph"
] | Using the United Nations Commodity Trade Statistics Database [http://comtrade.un.org/db/] we construct the Google matrix of the world trade network and analyze its properties for various trade commodities for all countries and all available years from 1962 to 2009. The trade flows on this network are classified with th... | {
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1103.5034 | On Understanding and Machine Understanding | [
"cs.AI"
] | In the present paper, we try to propose a self-similar network theory for the basic understanding. By extending the natural languages to a kind of so called idealy sufficient language, we can proceed a few steps to the investigation of the language searching and the language understanding of AI. Image understanding, ... | {
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1103.5043 | An Empirical Study of Real-World SPARQL Queries | [
"cs.IR",
"cs.AI",
"cs.HC"
] | Understanding how users tailor their SPARQL queries is crucial when designing query evaluation engines or fine-tuning RDF stores with performance in mind. In this paper we analyze 3 million real-world SPARQL queries extracted from logs of the DBPedia and SWDF public endpoints. We aim at finding which are the most used ... | {
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1103.5044 | Mining User Comment Activity for Detecting Forum Spammers in YouTube | [
"cs.IR",
"cs.AI",
"cs.HC"
] | Research shows that comment spamming (comments which are unsolicited, unrelated, abusive, hateful, commercial advertisements etc) in online discussion forums has become a common phenomenon in Web 2.0 applications and there is a strong need to counter or combat comment spamming. We present a method to automatically dete... | {
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1103.5046 | From Linked Data to Relevant Data -- Time is the Essence | [
"cs.IR",
"cs.AI",
"cs.HC"
] | The Semantic Web initiative puts emphasis not primarily on putting data on the Web, but rather on creating links in a way that both humans and machines can explore the Web of data. When such users access the Web, they leave a trail as Web servers maintain a history of requests. Web usage mining approaches have been stu... | {
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} |
1103.5078 | Algorithms for computing the greatest simulations and bisimulations
between fuzzy automata | [
"cs.FL",
"cs.AI"
] | Recently, two types of simulations (forward and backward simulations) and four types of bisimulations (forward, backward, forward-backward, and backward-forward bisimulations) between fuzzy automata have been introduced. If there is at least one simulation/bisimulation of some of these types between the given fuzzy aut... | {
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} |
1103.5081 | Using Variable Threshold to Increase Capacity in a Feedback Neural
Network | [
"cs.NE"
] | The article presents new results on the use of variable thresholds to increase the capacity of a feedback neural network. Non-binary networks are also considered in this analysis. | {
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1103.5110 | Formation of Modularity in a Model of Evolving Networks | [
"physics.soc-ph",
"cs.SI",
"nlin.AO"
] | Modularity structures are common in various social and biological networks. However, its dynamical origin remains an open question. In this work, we set up a dynamical model describing the evolution of a social network. Based on the observations of real social networks, we introduced a link-creating/deleting strategy a... | {
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1103.5120 | Emergence of scale-free leadership structure in social recommender
systems | [
"physics.soc-ph",
"cs.IR",
"cs.SI"
] | The study of the organization of social networks is important for understanding of opinion formation, rumor spreading, and the emergence of trends and fashion. This paper reports empirical analysis of networks extracted from four leading sites with social functionality (Delicious, Flickr, Twitter and YouTube) and shows... | {
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1103.5128 | Power Consumption of LDPC Decoders in Software Radio | [
"cs.IT",
"math.IT"
] | LDPC code is a powerful error correcting code and has been applied to many advanced communication systems. The prosperity of software radio has motivated us to investigate the implementation of LDPC decoders on processors. In this paper, we estimate and compare complexity and power consumption of LDPC decoding algorith... | {
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1103.5131 | Analysis of Equilibria and Strategic Interaction in Complex Networks | [
"cs.GT",
"cs.SI",
"cs.SY",
"math.OC"
] | This paper studies $n$-person simultaneous-move games with linear best response function, where individuals interact within a given network structure. This class of games have been used to model various settings, such as, public goods, belief formation, peer effects, and oligopoly. The purpose of this paper is to study... | {
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1103.5133 | Cooperative Strategies for Simultaneous and Broadcast Relay Channels | [
"cs.IT",
"math.IT"
] | Consider the \emph{simultaneous relay channel} (SRC) which consists of a set of relay channels where the source wishes to transmit common and private information to each of the destinations. This problem is recognized as being equivalent to that of sending common and private information to several destinations in prese... | {
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1103.5142 | Asymptotic Properties of One-Bit Distributed Detection with Ordered
Transmissions | [
"cs.IT",
"cs.MA",
"math.IT",
"stat.AP"
] | Consider a sensor network made of remote nodes connected to a common fusion center. In a recent work Blum and Sadler [1] propose the idea of ordered transmissions -sensors with more informative samples deliver their messages first- and prove that optimal detection performance can be achieved using only a subset of the ... | {
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1103.5163 | Generic Controllability of 3D Swimmers in a Perfect Fluid | [
"math.OC",
"cs.SY",
"physics.bio-ph"
] | We address the problem of controlling a dynamical system governing the motion of a 3D weighted shape changing body swimming in a perfect fluid. The rigid displacement of the swimmer results from the exchange of momentum between prescribed shape changes and the flow, the total impulse of the fluid-swimmer system being c... | {
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1103.5170 | Differentially Private Spatial Decompositions | [
"cs.DB"
] | Differential privacy has recently emerged as the de facto standard for private data release. This makes it possible to provide strong theoretical guarantees on the privacy and utility of released data. While it is well-known how to release data based on counts and simple functions under this guarantee, it remains to pr... | {
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1103.5188 | Differential Privacy: on the trade-off between Utility and Information
Leakage | [
"cs.CR",
"cs.DB",
"cs.IT",
"math.IT"
] | Differential privacy is a notion of privacy that has become very popular in the database community. Roughly, the idea is that a randomized query mechanism provides sufficient privacy protection if the ratio between the probabilities that two adjacent datasets give the same answer is bound by e^epsilon. In the field of ... | {
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1103.5197 | A New Secret key Agreement Scheme in a Four-Terminal Network | [
"cs.CR",
"cs.IT",
"math.IT"
] | A new scenario for generating a secret key and two private keys among three Terminals in the presence of an external eavesdropper is considered. Terminals 1, 2 and 3 intend to share a common secret key concealed from the external eavesdropper (Terminal 4) and simultaneously, each of Terminals 1 and 2 intends to share a... | {
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1103.5218 | Generalized Symmetric Divergence Measures and the Probability of Error | [
"cs.IT",
"math.IT"
] | There are three classical divergence measures exist in the literature on information theory and statistics. These are namely, Jeffryes-Kullback-Leiber J-divergence. Sibson-Burbea-Rao Jensen-Shannon divegernce and Taneja Arithmetic-Geometric divergence. These three measures bear an interesting relationship among each ot... | {
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1103.5219 | Upper Bounds on the Probability of Error in terms of Mean Divergence
Measures | [
"cs.IT",
"math.IT"
] | In this paper we shall consider some famous means such as arithmetic, harmonic, geometric, root square mean, etc. Considering the difference of these means, we can establish. some inequalities among them. Interestingly, the difference of mean considered is convex functions. Applying some properties, upper bounds on the... | {
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1103.5231 | Leaders in Social Networks, the Delicious Case | [
"physics.soc-ph",
"cs.IR",
"cs.SI"
] | Finding pertinent information is not limited to search engines. Online communities can amplify the influence of a small number of power users for the benefit of all other users. Users' information foraging in depth and breadth can be greatly enhanced by choosing suitable leaders. For instance in delicious.com, users su... | {
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1103.5258 | Controllability of rolling without twisting or slipping in higher
dimensions | [
"math.OC",
"cs.SY",
"math.DG"
] | We describe how the dynamical system of rolling two $n$-dimensional connected, oriented Riemannian manifolds $M$ and $\hat M$ without twisting or slipping, can be lifted to a nonholonomic system of elements in the product of the oriented orthonormal frame bundles belonging to the manifolds. By considering the lifted pr... | {
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1103.5269 | Naming Games in Two-Dimensional and Small-World-Connected Random
Geometric Networks | [
"cond-mat.stat-mech",
"cs.SI",
"physics.soc-ph"
] | We investigate a prototypical agent-based model, the Naming Game, on two-dimensional random geometric networks. The Naming Game [A. Baronchelli et al., J. Stat. Mech.: Theory Exp. (2006) P06014.] is a minimal model, employing local communications that captures the emergence of shared communication schemes (languages) i... | {
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1103.5290 | Optimal Energy Allocation for Wireless Communications with Energy
Harvesting Constraints | [
"cs.IT",
"math.IT"
] | We consider the use of energy harvesters, in place of conventional batteries with fixed energy storage, for point-to-point wireless communications. In addition to the challenge of transmitting in a channel with time selective fading, energy harvesters provide a perpetual but unreliable energy source. In this paper, we ... | {
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1103.5348 | Precoding for Outage Probability Minimization on Block Fading Channels | [
"cs.IT",
"math.IT"
] | The outage probability limit is a fundamental and achievable lower bound on the word error rate of coded communication systems affected by fading. This limit is mainly determined by two parameters: the diversity order and the coding gain. With linear precoding, full diversity on a block fading channel can be achieved w... | {
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1103.5362 | Verhulst-Lotka-Volterra (VLV) model of ideological struggles | [
"physics.soc-ph",
"cs.SI",
"nlin.AO"
] | Let the population of e.g. a country where some opinion struggle occurs be varying in time, according to Verhulst equation. Consider next some competition between opinions such as the dynamics be described by Lotka and Volterra equations. Two kinds of influences can be used, in such a model, for describing the dynamics... | {
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1103.5382 | On religion and language evolutions seen through mathematical and agent
based models | [
"physics.soc-ph",
"cs.SI",
"nlin.AO"
] | (shortened version) Religions and languages are social variables, like age, sex, wealth or political opinions, to be studied like any other organizational parameter. In fact, religiosity is one of the most important sociological aspects of populations. Languages are also a characteristics of the human kind. New religio... | {
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1103.5405 | Network Estimation and Packet Delivery Prediction for Control over
Wireless Mesh Networks | [
"cs.SY",
"cs.NI",
"math.OC"
] | Much of the current theory of networked control systems uses simple point-to-point communication models as an abstraction of the underlying network. As a result, the controller has very limited information on the network conditions and performs suboptimally. This work models the underlying wireless multihop mesh networ... | {
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1103.5410 | Political protest Italian-style: The dissonance between the blogosphere
and mainstream media in the promotion and coverage of Beppe Grillo's V-day | [
"cs.SI",
"cs.CY",
"physics.soc-ph"
] | We analyze the organization, promotion and public perception of V-day, a political rally that took place on September 8, 2007, to protest against corruption in the Italian Parliament. Launched by blogger Beppe Grillo, and promoted via a word of mouth mobilization on the Italian blogosphere, V-day brought close to one m... | {
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1103.5426 | Interference Channels with Rate-Limited Feedback | [
"cs.IT",
"math.IT"
] | We consider the two-user interference channel with rate-limited feedback. Related prior works focus on the case where feedback links have infinite capacity, while no research has been done for the rate-limited feedback problem. Several new challenges arise due to the capacity limitations of the feedback links, both in ... | {
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1103.5431 | Identification of Nonlinear Systems with Stable Limit Cycles via Convex
Optimization | [
"math.OC",
"cs.SY"
] | We propose a convex optimization procedure for black-box identification of nonlinear state-space models for systems that exhibit stable limit cycles (unforced periodic solutions). It extends the "robust identification error" framework in which a convex upper bound on simulation error is optimized to fit rational polyno... | {
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1103.5441 | Nobody but You: Sensor Selection for Voltage Regulation in Smart Grid | [
"cs.SY",
"math.OC"
] | The increasing availability of distributed energy resources (DERs) and sensors in smart grid, as well as overlaying communication network, provides substantial potential benefits for improving the power system's reliability. In this paper, the problem of sensor selection is studied for the MAC layer design of wireless ... | {
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1103.5451 | Complexity in human transportation networks: A comparative analysis of
worldwide air transportation and global cargo ship movements | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | We present a comparative network theoretic analysis of the two largest global transportation networks: The worldwide air-transportation network (WAN) and the global cargoship network (GCSN). We show that both networks exhibit striking statistical similarities despite significant differences in topology and connectivity... | {
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1103.5478 | Proof of the outage probability conjecture for MISO channels | [
"cs.IT",
"math.IT"
] | In Telatar 1999, it is conjectured that the covariance matrices minimizing the outage probability for MIMO channels with Gaussian fading are diagonal with either zeros or constant values on the diagonal. In the MISO setting, this is equivalent to conjecture that the Gaussian quadratic forms having largest tale probabil... | {
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"cs.SY": 0
} |
1103.5479 | Unicity conditions for low-rank matrix recovery | [
"math.NA",
"cs.IT",
"cs.SY",
"math.IT",
"math.OC",
"math.PR"
] | Low-rank matrix recovery addresses the problem of recovering an unknown low-rank matrix from few linear measurements. Nuclear-norm minimization is a tractible approach with a recent surge of strong theoretical backing. Analagous to the theory of compressed sensing, these results have required random measurements. For e... | {
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} |
1103.5520 | Shannon Entropy based Randomness Measurement and Test for Image
Encryption | [
"cs.CR",
"cs.IT",
"math.IT"
] | The quality of image encryption is commonly measured by the Shannon entropy over the ciphertext image. However, this measurement does not consider to the randomness of local image blocks and is inappropriate for scrambling based image encryption methods. In this paper, a new information entropy-based randomness measure... | {
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} |
1103.5535 | A Lattice Compress-and-Forward Scheme | [
"cs.IT",
"math.IT"
] | We present a nested lattice-code-based strategy that achieves the random-coding based Compress-and-Forward (CF) rate for the three node Gaussian relay channel. To do so, we first outline a lattice-based strategy for the $(X+Z_1,X+Z_2)$ Wyner-Ziv lossy source-coding with side-information problem in Gaussian noise, a re-... | {
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} |
1103.5542 | Sparsity Enhanced Decision Feedback Equalization | [
"cs.IT",
"math.IT"
] | For single-carrier systems with frequency domain equalization, decision feedback equalization (DFE) performs better than linear equalization and has much lower computational complexity than sequence maximum likelihood detection. The main challenge in DFE is the feedback symbol selection rule. In this paper, we give a t... | {
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} |
1103.5554 | Visual Localisation of Mobile Devices in an Indoor Environment under
Network Delay Conditions | [
"cs.RO"
] | Current progresses in home automation and service robotic environment have highlighted the need to develop interoperability mechanisms that allow a standard communication between the two systems. During the development of the DHCompliant protocol, the problem of locating mobile devices in an indoor environment has been... | {
"Other": 0,
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"cs.RO": 1,
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} |
1103.5569 | An upper bound on community size in scalable community detection | [
"physics.soc-ph",
"cs.SI"
] | It is well-known that community detection methods based on modularity optimization often fails to discover small communities. Several objective functions used for community detection therefore involve a resolution parameter that allows the detection of communities at different scales. We provide an explicit upper bound... | {
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} |
1103.5580 | Designing a Miniature Wheel Arrangement for Mobile Robot Platforms | [
"cs.RO"
] | In this research report details of design of a miniature wheel arrangement are presented. This miniature wheel arrangement is essentially a direction control mechanism intended for use on a mobile robot platform or base. The design is a specific one employing a stepper motor as actuator and as described can only be use... | {
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} |
1103.5582 | Role-similarity based comparison of directed networks | [
"physics.soc-ph",
"cs.SI",
"q-bio.MN"
] | The widespread relevance of complex networks is a valuable tool in the analysis of a broad range of systems. There is a demand for tools which enable the extraction of meaningful information and allow the comparison between different systems. We present a novel measure of similarity between nodes in different networks ... | {
"Other": 0,
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"cs.SI": 1,
"cs.SY": 0
} |
1103.5586 | Use of Devolved Controllers in Data Center Networks | [
"cs.NI",
"cs.SY",
"math.OC"
] | In a data center network, for example, it is quite often to use controllers to manage resources in a centralized man- ner. Centralized control, however, imposes a scalability problem. In this paper, we investigate the use of multiple independent controllers instead of a single omniscient controller to manage resources.... | {
"Other": 1,
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"cs.SY": 1
} |
1103.5602 | Time and spectral domain relative entropy: A new approach to
multivariate spectral estimation | [
"math.OC",
"cs.SY"
] | The concept of spectral relative entropy rate is introduced for jointly stationary Gaussian processes. Using classical information-theoretic results, we establish a remarkable connection between time and spectral domain relative entropy rates. This naturally leads to a new spectral estimation technique where a multivar... | {
"Other": 0,
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"cs.SD": 0,
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"cs.SY": 1
} |
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