id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
0705.1280 | A Novel method for the design of 2-DOF Parallel mechanisms for machining
applications | [
"cs.RO"
] | Parallel Kinematic Mechanisms (PKM) are interesting alternative designs for machine tools. A design method based on velocity amplification factors analysis is presented in this paper. The comparative study of two simple two-degree-of-freedom PKM dedicated to machining applications is led through this method: the common... | {
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0705.1282 | Design of a Three-Axis Isotropic Parallel Manipulator for Machining
Applications: The Orthoglide | [
"cs.RO"
] | The orthoglide is a 3-DOF parallel mechanism designed at IRCCyN for machining applications. It features three fixed parallel linear joints which are mounted orthogonally and a mobile platform which moves in the Cartesian x-y-z space with fixed orientation. The orthoglide has been designed as function of a prescribed Ca... | {
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0705.1284 | Workspace Analysis of the Orthoglide using Interval Analysis | [
"cs.RO"
] | This paper addresses the workspace analysis of the orthoglide, a 3-DOF parallel mechanism designed for machining applications. This machine features three fixed parallel linear joints which are mounted orthogonally and a mobile platform which moves in the Cartesian x-y-z space with fixed orientation. The workspace anal... | {
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0705.1285 | P\'eriph\'eriques haptiques et simulation d'objets, de robots et de
mannequins dans un environnement de CAO-Robotique : eM-Virtual Desktop | [
"cs.RO"
] | This paper presents the development of a new software in order to manage objects, robots and mannequins in using the possibilities given by the haptic feedback of the Phantom desktop devices. The haptic device provides 6 positional degree of freedom sensing but three degrees force feedback. This software called eM-Virt... | {
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0705.1309 | Robust Multi-Cellular Developmental Design | [
"cs.AI"
] | This paper introduces a continuous model for Multi-cellular Developmental Design. The cells are fixed on a 2D grid and exchange "chemicals" with their neighbors during the growth process. The quantity of chemicals that a cell produces, as well as the differentiation value of the cell in the phenotype, are controlled by... | {
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0705.1336 | Diversity-Multiplexing Tradeoff via Asymptotic Analysis of Large MIMO
Systems | [
"cs.IT",
"math.IT"
] | Diversity-multiplexing tradeoff (DMT) presents a compact framework to compare various MIMO systems and channels in terms of the two main advantages they provide (i.e. high data rate and/or low error rate). This tradeoff was characterized asymptotically (SNR-> infinity) for i.i.d. Rayleigh fading channel by Zheng and Ts... | {
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0705.1340 | On Optimum Power Allocation for the V-BLAST | [
"cs.IT",
"math.IT"
] | A unified analytical framework for optimum power allocation in the unordered V-BLAST algorithm and its comparative performance analysis are presented. Compact closed-form approximations for the optimum power allocation are derived, based on average total and block error rates. The choice of the criterion has little imp... | {
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0705.1343 | The Optimal Design of Three Degree-of-Freedom Parallel Mechanisms for
Machining Applications | [
"cs.RO"
] | The subject of this paper is the optimal design of a parallel mechanism intended for three-axis machining applications. Parallel mechanisms are interesting alternative designs in this context but most of them are designed for three- or six-axis machining applications. In the last case, the position and the orientation ... | {
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0705.1344 | Classification of one family of 3R positioning Manipulators | [
"cs.RO"
] | The aim of this paper is to classify one family of 3R serial positioning manipulators. This categorization is based on the number of cusp points of quaternary, binary, generic and non-generic manipulators. It was found three subsets of manipulators with 0, 2 or 4 cusp points and one homotopy class for generic quaternar... | {
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0705.1345 | Degree Optimization and Stability Condition for the Min-Sum Decoder | [
"cs.IT",
"math.IT"
] | The min-sum (MS) algorithm is arguably the second most fundamental algorithm in the realm of message passing due to its optimality (for a tree code) with respect to the {\em block error} probability \cite{Wiberg}. There also seems to be a fundamental relationship of MS decoding with the linear programming decoder \cite... | {
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0705.1384 | Matroid Pathwidth and Code Trellis Complexity | [
"cs.DM",
"cs.IT",
"math.IT"
] | We relate the notion of matroid pathwidth to the minimum trellis state-complexity (which we term trellis-width) of a linear code, and to the pathwidth of a graph. By reducing from the problem of computing the pathwidth of a graph, we show that the problem of determining the pathwidth of a representable matroid is NP-ha... | {
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0705.1390 | Machine and Component Residual Life Estimation through the Application
of Neural Networks | [
"cs.CE"
] | This paper concerns the use of neural networks for predicting the residual life of machines and components. In addition, the advantage of using condition-monitoring data to enhance the predictive capability of these neural networks was also investigated. A number of neural network variations were trained and tested wit... | {
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0705.1394 | The Orthoglide: Kinematics and Workspace Analysis | [
"cs.RO"
] | The paper addresses kinematic and geometrical aspects of the Orthoglide, a three-DOF parallel mechanism. This machine consists of three fixed linear joints, which are mounted orthogonally, three identical legs and a mobile platform, which moves in the Cartesian x-y-z space with fixed orientation. New solutions to solve... | {
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0705.1395 | Subjective Evaluation of Forms in an Immersive Environment | [
"cs.HC",
"cs.RO"
] | User's perception of product, by essence subjective, is a major topic in marketing and industrial design. Many methods, based on users' tests, are used so as to characterise this perception. We are interested in three main methods: multidimensional scaling, semantic differential method, and preference mapping. These me... | {
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0705.1397 | Realistic Rendering of Kinetostatic Indices of Mechanisms | [
"cs.RO"
] | The work presented in this paper is related to the use of a haptic device in an environment of robotic simulation. Such device introduces a new approach to feel and to understand the boundaries of the workspace of mechanisms as well as its kinetostatic properties. Indeed, these concepts are abstract and thus often diff... | {
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0705.1399 | A New Concept of Modular Parallel Mechanism for Machining Applications | [
"cs.RO"
] | The subject of this paper is the design of a new concept of modular parallel mechanisms for three, four or five-axis machining applications. Most parallel mechanisms are designed for three- or six-axis machining applications. In the last case, the position and the orientation of the tool are coupled and the shape of th... | {
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0705.1400 | A Workspace based Classification of 3R Orthogonal Manipulators | [
"cs.RO"
] | A classification of a family of 3-revolute (3R) positioning manipulators is established. This classification is based on the topology of their workspace. The workspace is characterized in a half-cross section by the singular curves of the manipulator. The workspace topology is defined by the number of cusps and nodes t... | {
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0705.1409 | Singularity Surfaces and Maximal Singularity-Free Boxes in the Joint
Space of Planar 3-RPR Parallel Manipulators | [
"cs.RO"
] | In this paper, a method to compute joint space singularity surfaces of 3-RPR planar parallel manipulators is first presented. Then, a procedure to determine maximal joint space singularity-free boxes is introduced. Numerical examples are given in order to illustrate graphically the results. This study is of high intere... | {
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0705.1410 | Kinematics analysis of the parallel module of the VERNE machine | [
"cs.RO"
] | The paper derives the inverse and forward kinematic equations of a spatial three-degree-of-freedom parallel mechanism, which is the parallel module of a hybrid serial-parallel 5-axis machine tool. This parallel mechanism consists of a moving platform that is connected to a fixed base by three non-identical legs. Each l... | {
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0705.1450 | An Algorithm for Computing Cusp Points in the Joint Space of 3-RPR
Parallel Manipulators | [
"cs.RO"
] | This paper presents an algorithm for detecting and computing the cusp points in the joint space of 3-RPR planar parallel manipulators. In manipulator kinematics, cusp points are special points, which appear on the singular curves of the manipulators. The nonsingular change of assembly mode of 3-RPR parallel manipulator... | {
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0705.1453 | DWEB: A Data Warehouse Engineering Benchmark | [
"cs.DB"
] | Data warehouse architectural choices and optimization techniques are critical to decision support query performance. To facilitate these choices, the performance of the designed data warehouse must be assessed. This is usually done with the help of benchmarks, which can either help system users comparing the performanc... | {
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0705.1454 | DOEF: A Dynamic Object Evaluation Framework | [
"cs.DB"
] | In object-oriented or object-relational databases such as multimedia databases or most XML databases, access patterns are not static, i.e., applications do not always access the same objects in the same order repeatedly. However, this has been the way these databases and associated optimisation techniques like clusteri... | {
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0705.1455 | Decision tree modeling with relational views | [
"cs.DB"
] | Data mining is a useful decision support technique that can be used to discover production rules in warehouses or corporate data. Data mining research has made much effort to apply various mining algorithms efficiently on large databases. However, a serious problem in their practical application is the long processing ... | {
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0705.1456 | Warehousing Web Data | [
"cs.DB"
] | In a data warehousing process, mastering the data preparation phase allows substantial gains in terms of time and performance when performing multidimensional analysis or using data mining algorithms. Furthermore, a data warehouse can require external data. The web is a prevalent data source in this context. In this pa... | {
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0705.1457 | Web data modeling for integration in data warehouses | [
"cs.DB"
] | In a data warehousing process, the data preparation phase is crucial. Mastering this phase allows substantial gains in terms of time and performance when performing a multidimensional analysis or using data mining algorithms. Furthermore, a data warehouse can require external data. The web is a prevalent data source in... | {
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0705.1481 | Actin - Technical Report | [
"cs.NE"
] | The Boolean satisfiability problem (SAT) can be solved efficiently with variants of the DPLL algorithm. For industrial SAT problems, DPLL with conflict analysis dependent dynamic decision heuristics has proved to be particularly efficient, e.g. in Chaff. In this work, algorithms that initialize the variable activity va... | {
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0705.1585 | HMM Speaker Identification Using Linear and Non-linear Merging
Techniques | [
"cs.LG"
] | Speaker identification is a powerful, non-invasive and in-expensive biometric technique. The recognition accuracy, however, deteriorates when noise levels affect a specific band of frequency. In this paper, we present a sub-band based speaker identification that intends to improve the live testing performance. Each fre... | {
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0705.1612 | A Class of LDPC Erasure Distributions with Closed-Form Threshold
Expression | [
"cs.IT",
"math.IT"
] | In this paper, a family of low-density parity-check (LDPC) degree distributions, whose decoding threshold on the binary erasure channel (BEC) admits a simple closed form, is presented. These degree distributions are a subset of the check regular distributions (i.e. all the check nodes have the same degree), and are ref... | {
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0705.1617 | Non-Computability of Consciousness | [
"quant-ph",
"astro-ph",
"cs.AI"
] | With the great success in simulating many intelligent behaviors using computing devices, there has been an ongoing debate whether all conscious activities are computational processes. In this paper, the answer to this question is shown to be no. A certain phenomenon of consciousness is demonstrated to be fully represen... | {
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0705.1672 | Principal Component Analysis and Automatic Relevance Determination in
Damage Identification | [
"cs.CE"
] | This paper compares two neural network input selection schemes, the Principal Component Analysis (PCA) and the Automatic Relevance Determination (ARD) based on Mac-Kay's evidence framework. The PCA takes all the input data and projects it onto a lower dimension space, thereby reduc-ing the dimension of the input space.... | {
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0705.1673 | Using artificial intelligence for data reduction in mechanical
engineering | [
"cs.CE",
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"cs.NE"
] | In this paper artificial neural networks and support vector machines are used to reduce the amount of vibration data that is required to estimate the Time Domain Average of a gear vibration signal. Two models for estimating the time domain average of a gear vibration signal are proposed. The models are tested on data f... | {
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0705.1674 | Evolutionary Optimisation Methods for Template Based Image Registration | [
"cs.CE",
"cs.CV"
] | This paper investigates the use of evolutionary optimisation techniques to register a template with a scene image. An error function is created to measure the correspondence of the template to the image. The problem presented here is to optimise the horizontal, vertical and scaling parameters that register the template... | {
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0705.1680 | Option Pricing Using Bayesian Neural Networks | [
"cs.CE",
"cs.NE"
] | Options have provided a field of much study because of the complexity involved in pricing them. The Black-Scholes equations were developed to price options but they are only valid for European styled options. There is added complexity when trying to price American styled options and this is why the use of neural networ... | {
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0705.1682 | Capacity of Underspread Noncoherent WSSUS Fading Channels under Peak
Signal Constraints | [
"cs.IT",
"math.IT"
] | We characterize the capacity of the general class of noncoherent underspread wide-sense stationary uncorrelated scattering (WSSUS) time-frequency-selective Rayleigh fading channels, under peak constraints in time and frequency and in time only. Capacity upper and lower bounds are found which are explicit in the channel... | {
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0705.1757 | Scalability and Optimisation of a Committee of Agents Using Genetic
Algorithm | [
"cs.MA"
] | A population of committees of agents that learn by using neural networks is implemented to simulate the stock market. Each committee of agents, which is regarded as a player in a game, is optimised by continually adapting the architecture of the agents using genetic algorithms. The committees of agents buy and sell sto... | {
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0705.1759 | Finite Element Model Updating Using Response Surface Method | [
"cs.CE"
] | This paper proposes the response surface method for finite element model updating. The response surface method is implemented by approximating the finite element model surface response equation by a multi-layer perceptron. The updated parameters of the finite element model were calculated using genetic algorithm by opt... | {
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0705.1760 | Dynamic Model Updating Using Particle Swarm Optimization Method | [
"cs.CE",
"cs.NE"
] | This paper proposes the use of particle swarm optimization method (PSO) for finite element (FE) model updating. The PSO method is compared to the existing methods that use simulated annealing (SA) or genetic algorithms (GA) for FE model for model updating. The proposed method is tested on an unsymmetrical H-shaped stru... | {
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0705.1787 | Energy-Efficient Resource Allocation in Wireless Networks: An Overview
of Game-Theoretic Approaches | [
"cs.IT",
"cs.GT",
"math.IT"
] | An overview of game-theoretic approaches to energy-efficient resource allocation in wireless networks is presented. Focusing on multiple-access networks, it is demonstrated that game theory can be used as an effective tool to study resource allocation in wireless networks with quality-of-service (QoS) constraints. A fa... | {
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0705.1788 | A Game-Theoretic Approach to Energy-Efficient Modulation in CDMA
Networks with Delay QoS Constraints | [
"cs.IT",
"cs.GT",
"math.IT"
] | A game-theoretic framework is used to study the effect of constellation size on the energy efficiency of wireless networks for M-QAM modulation. A non-cooperative game is proposed in which each user seeks to choose its transmit power (and possibly transmit symbol rate) as well as the constellation size in order to maxi... | {
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0705.1789 | Random Linear Network Coding: A free cipher? | [
"cs.IT",
"cs.CR",
"math.IT"
] | We consider the level of information security provided by random linear network coding in network scenarios in which all nodes comply with the communication protocols yet are assumed to be potential eavesdroppers (i.e. "nice but curious"). For this setup, which differs from wiretapping scenarios considered previously, ... | {
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0705.1886 | Ontology-Supported and Ontology-Driven Conceptual Navigation on the
World Wide Web | [
"cs.IR"
] | This paper presents the principles of ontology-supported and ontology-driven conceptual navigation. Conceptual navigation realizes the independence between resources and links to facilitate interoperability and reusability. An engine builds dynamic links, assembles resources under an argumentative scheme and allows opt... | {
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0705.1919 | Optimal Watermark Embedding and Detection Strategies Under Limited
Detection Resources | [
"cs.IT",
"cs.CR",
"math.IT"
] | An information-theoretic approach is proposed to watermark embedding and detection under limited detector resources. First, we consider the attack-free scenario under which asymptotically optimal decision regions in the Neyman-Pearson sense are proposed, along with the optimal embedding rule. Later, we explore the case... | {
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0705.1922 | Crystallization in large wireless networks | [
"cs.IT",
"math.IT"
] | We analyze fading interference relay networks where M single-antenna source-destination terminal pairs communicate concurrently and in the same frequency band through a set of K single-antenna relays using half-duplex two-hop relaying. Assuming that the relays have channel state information (CSI), it is shown that in t... | {
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0705.1999 | A first-order Temporal Logic for Actions | [
"cs.AI",
"cs.LO"
] | We present a multi-modal action logic with first-order modalities, which contain terms which can be unified with the terms inside the subsequent formulas and which can be quantified. This makes it possible to handle simultaneously time and states. We discuss applications of this language to action theory where it is po... | {
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0705.2009 | Bit-Interleaved Coded Multiple Beamforming with Imperfect CSIT | [
"cs.IT",
"math.IT"
] | This paper addresses the performance of bit-interleaved coded multiple beamforming (BICMB) [1], [2] with imperfect knowledge of beamforming vectors. Most studies for limited-rate channel state information at the transmitter (CSIT) assume that the precoding matrix has an invariance property under an arbitrary unitary tr... | {
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0705.2011 | Multi-Dimensional Recurrent Neural Networks | [
"cs.AI",
"cs.CV"
] | Recurrent neural networks (RNNs) have proved effective at one dimensional sequence learning tasks, such as speech and online handwriting recognition. Some of the properties that make RNNs suitable for such tasks, for example robustness to input warping, and the ability to access contextual information, are also desirab... | {
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0705.2106 | Scientific citations in Wikipedia | [
"cs.DL",
"cs.IR"
] | The Internet-based encyclopaedia Wikipedia has grown to become one of the most visited web-sites on the Internet. However, critics have questioned the quality of entries, and an empirical study has shown Wikipedia to contain errors in a 2005 sample of science entries. Biased coverage and lack of sources are among the "... | {
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0705.2235 | Response Prediction of Structural System Subject to Earthquake Motions
using Artificial Neural Network | [
"cs.AI"
] | This paper uses Artificial Neural Network (ANN) models to compute response of structural system subject to Indian earthquakes at Chamoli and Uttarkashi ground motion data. The system is first trained for a single real earthquake data. The trained ANN architecture is then used to simulate earthquakes with various intens... | {
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0705.2236 | Fault Classification using Pseudomodal Energies and Neuro-fuzzy
modelling | [
"cs.AI"
] | This paper presents a fault classification method which makes use of a Takagi-Sugeno neuro-fuzzy model and Pseudomodal energies calculated from the vibration signals of cylindrical shells. The calculation of Pseudomodal Energies, for the purposes of condition monitoring, has previously been found to be an accurate meth... | {
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0705.2270 | Multi-Access MIMO Systems with Finite Rate Channel State Feedback | [
"cs.IT",
"math.IT"
] | This paper characterizes the effect of finite rate channel state feedback on the sum rate of a multi-access multiple-input multiple-output (MIMO) system. We propose to control the users jointly, specifically, we first choose the users jointly and then select the corresponding beamforming vectors jointly. To quantify th... | {
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0705.2272 | Quantization Bounds on Grassmann Manifolds of Arbitrary Dimensions and
MIMO Communications with Feedback | [
"cs.IT",
"math.IT"
] | This paper considers the quantization problem on the Grassmann manifold with dimension n and p. The unique contribution is the derivation of a closed-form formula for the volume of a metric ball in the Grassmann manifold when the radius is sufficiently small. This volume formula holds for Grassmann manifolds with arbit... | {
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0705.2273 | On the Information Rate of MIMO Systems with Finite Rate Channel State
Feedback and Power On/Off Strategy | [
"cs.IT",
"math.IT"
] | This paper quantifies the information rate of multiple-input multiple-output (MIMO) systems with finite rate channel state feedback and power on/off strategy. In power on/off strategy, a beamforming vector (beam) is either turned on (denoted by on-beam) with a constant power or turned off. We prove that the ratio of th... | {
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0705.2274 | How Many Users should be Turned On in a Multi-Antenna Broadcast Channel? | [
"cs.IT",
"math.IT"
] | This paper considers broadcast channels with L antennas at the base station and m single-antenna users, where each user has perfect channel knowledge and the base station obtains channel information through a finite rate feedback. The key observation of this paper is that the optimal number of on-users (users turned on... | {
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0705.2278 | Unequal dimensional small balls and quantization on Grassmann Manifolds | [
"cs.IT",
"math.IT"
] | The Grassmann manifold G_{n,p}(L) is the set of all p-dimensional planes (through the origin) in the n-dimensional Euclidean space L^{n}, where L is either R or C. This paper considers an unequal dimensional quantization in which a source in G_{n,p}(L) is quantized through a code in G_{n,q}(L), where p and q are not ne... | {
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0705.2305 | Fuzzy and Multilayer Perceptron for Evaluation of HV Bushings | [
"cs.AI",
"cs.NE"
] | The work proposes the application of fuzzy set theory (FST) to diagnose the condition of high voltage bushings. The diagnosis uses dissolved gas analysis (DGA) data from bushings based on IEC60599 and IEEE C57-104 criteria for oil impregnated paper (OIP) bushings. FST and neural networks are compared in terms of accura... | {
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0705.2307 | A Study in a Hybrid Centralised-Swarm Agent Community | [
"cs.NE",
"cs.AI"
] | This paper describes a systems architecture for a hybrid Centralised/Swarm based multi-agent system. The issue of local goal assignment for agents is investigated through the use of a global agent which teaches the agents responses to given situations. We implement a test problem in the form of a Pursuit game, where th... | {
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0705.2310 | On-Line Condition Monitoring using Computational Intelligence | [
"cs.AI"
] | This paper presents bushing condition monitoring frameworks that use multi-layer perceptrons (MLP), radial basis functions (RBF) and support vector machines (SVM) classifiers. The first level of the framework determines if the bushing is faulty or not while the second level determines the type of fault. The diagnostic ... | {
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0705.2318 | Statistical Mechanics of Nonlinear On-line Learning for Ensemble
Teachers | [
"cs.LG",
"cond-mat.dis-nn"
] | We analyze the generalization performance of a student in a model composed of nonlinear perceptrons: a true teacher, ensemble teachers, and the student. We calculate the generalization error of the student analytically or numerically using statistical mechanics in the framework of on-line learning. We treat two well-kn... | {
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0705.2435 | Reduced Complexity Sphere Decoding for Square QAM via a New Lattice
Representation | [
"cs.IT",
"math.IT"
] | Sphere decoding (SD) is a low complexity maximum likelihood (ML) detection algorithm, which has been adapted for different linear channels in digital communications. The complexity of the SD has been shown to be exponential in some cases, and polynomial in others and under certain assumptions. The sphere radius and the... | {
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0705.2485 | Using Genetic Algorithms to Optimise Rough Set Partition Sizes for HIV
Data Analysis | [
"cs.NE",
"cs.AI",
"q-bio.QM"
] | In this paper, we present a method to optimise rough set partition sizes, to which rule extraction is performed on HIV data. The genetic algorithm optimisation technique is used to determine the partition sizes of a rough set in order to maximise the rough sets prediction accuracy. The proposed method is tested on a se... | {
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} |
0705.2516 | Condition Monitoring of HV Bushings in the Presence of Missing Data
Using Evolutionary Computing | [
"cs.NE",
"cs.AI"
] | The work proposes the application of neural networks with particle swarm optimisation (PSO) and genetic algorithms (GA) to compensate for missing data in classifying high voltage bushings. The classification is done using DGA data from 60966 bushings based on IEEEc57.104, IEC599 and IEEE production rates methods for oi... | {
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0705.2535 | Informatics Carnot Machine | [
"cs.IT",
"math.IT"
] | Based on Planck's blackbody equation it is argued that a single mode light pulse, with a large number of photons, carries one entropy unit. Similarly, an empty radiation mode carries no entropy. In this case, the calculated entropy that a coded sequence of light pulses is carrying is simply the Gibbs mixing entropy, wh... | {
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0705.2604 | Computational Intelligence for Condition Monitoring | [
"cs.CE"
] | Condition monitoring techniques are described in this chapter. Two aspects of condition monitoring process are considered: (1) feature extraction; and (2) condition classification. Feature extraction methods described and implemented are fractals, Kurtosis and Mel-frequency Cepstral Coefficients. Classification methods... | {
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0705.2765 | On the monotonization of the training set | [
"cs.LG",
"cs.AI"
] | We consider the problem of minimal correction of the training set to make it consistent with monotonic constraints. This problem arises during analysis of data sets via techniques that require monotone data. We show that this problem is NP-hard in general and is equivalent to finding a maximal independent set in specia... | {
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0705.2787 | Worst-Case Background Knowledge for Privacy-Preserving Data Publishing | [
"cs.DB"
] | Recent work has shown the necessity of considering an attacker's background knowledge when reasoning about privacy in data publishing. However, in practice, the data publisher does not know what background knowledge the attacker possesses. Thus, it is important to consider the worst-case. In this paper, we initiate a f... | {
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0705.2847 | Capacity of Sparse Multipath Channels in the Ultra-Wideband Regime | [
"cs.IT",
"math.IT"
] | This paper studies the ergodic capacity of time- and frequency-selective multipath fading channels in the ultrawideband (UWB) regime when training signals are used for channel estimation at the receiver. Motivated by recent measurement results on UWB channels, we propose a model for sparse multipath channels. A key imp... | {
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0705.2848 | Non-Coherent Capacity and Reliability of Sparse Multipath Channels in
the Wideband Regime | [
"cs.IT",
"math.IT"
] | In contrast to the prevalent assumption of rich multipath in information theoretic analysis of wireless channels, physical channels exhibit sparse multipath, especially at large bandwidths. We propose a model for sparse multipath fading channels and present results on the impact of sparsity on non-coherent capacity and... | {
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0705.2854 | Scanning and Sequential Decision Making for Multi-Dimensional Data -
Part II: the Noisy Case | [
"cs.IT",
"cs.CV",
"math.IT"
] | We consider the problem of sequential decision making on random fields corrupted by noise. In this scenario, the decision maker observes a noisy version of the data, yet judged with respect to the clean data. In particular, we first consider the problem of sequentially scanning and filtering noisy random fields. In thi... | {
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0705.3013 | A stochastic non-cooperative game for energy efficiency in wireless data
networks | [
"cs.IT",
"cs.GT",
"math.IT"
] | In this paper the issue of energy efficiency in CDMA wireless data networks is addressed through a game theoretic approach. Building on a recent paper by the first two authors, wherein a non-cooperative game for spreading-code optimization, power control, and receiver design has been proposed to maximize the ratio of d... | {
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0705.3025 | Spectral Efficiency of Spectrum Pooling Systems | [
"cs.IT",
"cs.NI",
"math.IT"
] | In this contribution, we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband system in which the primary and cognitive users wish to communicate to different receivers, subject to mutual interference and assume that each ... | {
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0705.3050 | A competitive multi-agent model of interbank payment systems | [
"cs.MA"
] | We develop a dynamic multi-agent model of an interbank payment system where banks choose their level of available funds on the basis of private payoff maximisation. The model consists of the repetition of a simultaneous move stage game with incomplete information, incomplete monitoring, and stochastic payoffs. Adaptati... | {
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0705.3058 | On the Shannon capacity and queueing stability of random access
multicast | [
"cs.IT",
"math.IT"
] | We study and compare the Shannon capacity region and the stable throughput region for a random access system in which source nodes multicast their messages to multiple destination nodes. Under an erasure channel model which accounts for interference and allows for multipacket reception, we first characterize the Shanno... | {
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0705.3099 | Distortion Minimization in Gaussian Layered Broadcast Coding with
Successive Refinement | [
"cs.IT",
"math.IT"
] | A transmitter without channel state information (CSI) wishes to send a delay-limited Gaussian source over a slowly fading channel. The source is coded in superimposed layers, with each layer successively refining the description in the previous one. The receiver decodes the layers that are supported by the channel real... | {
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0705.3261 | Recovering Multiplexing Loss Through Successive Relaying Using
Repetition Coding | [
"cs.IT",
"math.IT"
] | In this paper, a transmission protocol is studied for a two relay wireless network in which simple repetition coding is applied at the relays. Information-theoretic achievable rates for this transmission scheme are given, and a space-time V-BLAST signalling and detection method that can approach them is developed. It i... | {
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0705.3344 | Multiuser detection in a dynamic environment Part I: User identification
and data detection | [
"cs.IT",
"math.IT"
] | In random-access communication systems, the number of active users varies with time, and has considerable bearing on receiver's performance. Thus, techniques aimed at identifying not only the information transmitted, but also that number, play a central role in those systems. An example of application of these techniqu... | {
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0705.3360 | The Road to Quantum Artificial Intelligence | [
"cs.AI"
] | This paper overviews the basic principles and recent advances in the emerging field of Quantum Computation (QC), highlighting its potential application to Artificial Intelligence (AI). The paper provides a very brief introduction to basic QC issues like quantum registers, quantum gates and quantum algorithms and then i... | {
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0705.3555 | Multidimensional Coded Modulation in Block-Fading Channnels | [
"cs.IT",
"math.IT"
] | We study the problem of constructing coded modulation schemes over multidimensional signal sets in Nakagami-$m$ block-fading channels. In particular, we consider the optimal diversity reliability exponent of the error probability when the multidimensional constellation is obtained as the rotation of classical complex-p... | {
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0705.3561 | Generalizing Consistency and other Constraint Properties to Quantified
Constraints | [
"cs.LO",
"cs.AI"
] | Quantified constraints and Quantified Boolean Formulae are typically much more difficult to reason with than classical constraints, because quantifier alternation makes the usual notion of solution inappropriate. As a consequence, basic properties of Constraint Satisfaction Problems (CSP), such as consistency or substi... | {
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0705.3593 | MI image registration using prior knowledge | [
"cs.CV"
] | Subtraction of aligned images is a means to assess changes in a wide variety of clinical applications. In this paper we explore the information theoretical origin of Mutual Information (MI), which is based on Shannon's entropy.However, the interpretation of standard MI registration as a communication channel suggests t... | {
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0705.3644 | Subjective Information Measure and Rate Fidelity Theory | [
"cs.IT",
"cs.HC",
"math.IT"
] | Using fish-covering model, this paper intuitively explains how to extend Hartley's information formula to the generalized information formula step by step for measuring subjective information: metrical information (such as conveyed by thermometers), sensory information (such as conveyed by color vision), and semantic i... | {
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0705.3669 | Structural Health Monitoring Using Neural Network Based Vibrational
System Identification | [
"cs.NE",
"cs.CV",
"cs.SD"
] | Composite fabrication technologies now provide the means for producing high-strength, low-weight panels, plates, spars and other structural components which use embedded fiber optic sensors and piezoelectric transducers. These materials, often referred to as smart structures, make it possible to sense internal characte... | {
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0705.3677 | Distributed Transmit Diversity in Relay Networks | [
"cs.IT",
"math.IT"
] | We analyze fading relay networks, where a single-antenna source-destination terminal pair communicates through a set of half-duplex single-antenna relays using a two-hop protocol with linear processing at the relay level. A family of relaying schemes is presented which achieves the entire optimal diversity-multiplexing... | {
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0705.3693 | Morphing Ensemble Kalman Filters | [
"math.DS",
"cs.CV",
"math.ST",
"physics.ao-ph",
"stat.ME",
"stat.TH"
] | A new type of ensemble filter is proposed, which combines an ensemble Kalman filter (EnKF) with the ideas of morphing and registration from image processing. This results in filters suitable for nonlinear problems whose solutions exhibit moving coherent features, such as thin interfaces in wildfire modeling. The ensemb... | {
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0705.3766 | On complexity of optimized crossover for binary representations | [
"cs.NE",
"cs.AI"
] | We consider the computational complexity of producing the best possible offspring in a crossover, given two solutions of the parents. The crossover operators are studied on the class of Boolean linear programming problems, where the Boolean vector of variables is used as the solution representation. By means of efficie... | {
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0705.3895 | Towards Understanding the Origin of Genetic Languages | [
"q-bio.GN",
"cs.IT",
"math.IT",
"physics.bio-ph",
"quant-ph"
] | Molecular biology is a nanotechnology that works--it has worked for billions of years and in an amazing variety of circumstances. At its core is a system for acquiring, processing and communicating information that is universal, from viruses and bacteria to human beings. Advances in genetics and experience in designing... | {
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0705.3949 | Translating a first-order modal language to relational algebra | [
"cs.LO",
"cs.DB"
] | This paper is about Kripke structures that are inside a relational database and queried with a modal language. At first the modal language that is used is introduced, followed by a definition of the database and relational algebra. Based on these definitions two things are presented: a mapping from components of the mo... | {
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0705.3990 | Interior Point Decoding for Linear Vector Channels | [
"cs.IT",
"math.IT"
] | In this paper, a novel decoding algorithm for low-density parity-check (LDPC) codes based on convex optimization is presented. The decoding algorithm, called interior point decoding, is designed for linear vector channels. The linear vector channels include many practically important channels such as inter symbol inter... | {
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0705.3992 | Average Stopping Set Weight Distribution of Redundant Random Matrix
Ensembles | [
"cs.IT",
"math.IT"
] | In this paper, redundant random matrix ensembles (abbreviated as redundant random ensembles) are defined and their stopping set (SS) weight distributions are analyzed. A redundant random ensemble consists of a set of binary matrices with linearly dependent rows. These linearly dependent rows (redundant rows) significan... | {
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0705.3995 | On Undetected Error Probability of Binary Matrix Ensembles | [
"cs.IT",
"math.IT"
] | In this paper, an analysis of the undetected error probability of ensembles of binary matrices is presented. The ensemble called the Bernoulli ensemble whose members are considered as matrices generated from i.i.d. Bernoulli source is mainly considered here. The main contributions of this work are (i) derivation of the... | {
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0705.4045 | The use of the logarithm of the variate in the calculation of
differential entropy among certain related statistical distributions | [
"cs.IT",
"math.IT"
] | This paper demonstrates that basic statistics (mean, variance) of the logarithm of the variate itself can be used in the calculation of differential entropy among random variables known to be multiples and powers of a common underlying variate. For the same set of distributions, the variance of the differential self-in... | {
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0705.4134 | The Battery-Discharge-Model: A Class of Stochastic Finite Automata to
Simulate Multidimensional Continued Fraction Expansion | [
"cs.IT",
"cs.CC",
"cs.CR",
"math.IT"
] | We define an infinite stochastic state machine, the Battery-Discharge-Model (BDM), which simulates the behaviour of linear and jump complexity of the continued fraction expansion of multidimensional formal power series, a relevant security measure in the cryptanalysis of stream ciphers. We also obtain finite approxim... | {
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"cs.SI": 0,
"cs.SY": 0
} |
0705.4138 | The Asymptotic Normalized Linear Complexity of Multisequences | [
"cs.IT",
"cs.CC",
"cs.CR",
"math.IT"
] | We show that the asymptotic linear complexity of a multisequence a in F_q^\infty that is I := liminf L_a(n)/n and S := limsup L_a(n)/n satisfy the inequalities M/(M+1) <= S <= 1 and M(1-S) <= I <= 1-S/M, if all M sequences have nonzero discrepancy infinitely often, and all pairs (I,S) satisfying these conditions are me... | {
"Other": 1,
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} |
0705.4302 | Truecluster matching | [
"cs.AI"
] | Cluster matching by permuting cluster labels is important in many clustering contexts such as cluster validation and cluster ensemble techniques. The classic approach is to minimize the euclidean distance between two cluster solutions which induces inappropriate stability in certain settings. Therefore, we present the ... | {
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"cs.MA": 0,
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"cs.RO": 0,
"cs.SD": 0,
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"cs.SY": 0
} |
0705.4442 | World-set Decompositions: Expressiveness and Efficient Algorithms | [
"cs.DB"
] | Uncertain information is commonplace in real-world data management scenarios. The ability to represent large sets of possible instances (worlds) while supporting efficient storage and processing is an important challenge in this context. The recent formalism of world-set decompositions (WSDs) provides a space-efficient... | {
"Other": 0,
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"cs.NE": 0,
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"cs.SD": 0,
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} |
0705.4485 | Mixed membership stochastic blockmodels | [
"stat.ME",
"cs.LG",
"math.ST",
"physics.soc-ph",
"stat.ML",
"stat.TH"
] | Observations consisting of measurements on relationships for pairs of objects arise in many settings, such as protein interaction and gene regulatory networks, collections of author-recipient email, and social networks. Analyzing such data with probabilisic models can be delicate because the simple exchangeability assu... | {
"Other": 0,
"cs.AI": 0,
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"cs.CL": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
0705.4566 | Loop corrections for message passing algorithms in continuous variable
models | [
"cs.AI",
"cs.LG"
] | In this paper we derive the equations for Loop Corrected Belief Propagation on a continuous variable Gaussian model. Using the exactness of the averages for belief propagation for Gaussian models, a different way of obtaining the covariances is found, based on Belief Propagation on cavity graphs. We discuss the relatio... | {
"Other": 0,
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"cs.LG": 1,
"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
0705.4584 | Modeling Epidemic Spread in Synthetic Populations - Virtual Plagues in
Massively Multiplayer Online Games | [
"cs.CY",
"cs.AI",
"cs.MA"
] | A virtual plague is a process in which a behavior-affecting property spreads among characters in a Massively Multiplayer Online Game (MMOG). The MMOG individuals constitute a synthetic population, and the game can be seen as a form of interactive executable model for studying disease spread, albeit of a very special ki... | {
"Other": 0,
"cs.AI": 1,
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"cs.MA": 1,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
0705.4606 | Dynamic User-Defined Similarity Searching in Semi-Structured Text
Retrieval | [
"cs.IR",
"cs.DS"
] | Modern text retrieval systems often provide a similarity search utility, that allows the user to find efficiently a fixed number k of documents in the data set that are most similar to a given query (here a query is either a simple sequence of keywords or the identifier of a full document found in previous searches tha... | {
"Other": 1,
"cs.AI": 0,
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"cs.IR": 1,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
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"cs.SY": 0
} |
0705.4654 | Local Area Damage Detection in Composite Structures Using Piezoelectric
Transducers | [
"cs.SD",
"cs.CV"
] | An integrated and automated smart structures approach for structural health monitoring is presented, utilizing an array of piezoelectric transducers attached to or embedded within the structure for both actuation and sensing. The system actively interrogates the structure via broadband excitation of multiple actuators ... | {
"Other": 0,
"cs.AI": 0,
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"cs.SD": 1,
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} |
0705.4658 | Two sources are better than one for increasing the Kolmogorov complexity
of infinite sequences | [
"cs.IT",
"cs.CC",
"math.IT"
] | The randomness rate of an infinite binary sequence is characterized by the sequence of ratios between the Kolmogorov complexity and the length of the initial segments of the sequence. It is known that there is no uniform effective procedure that transforms one input sequence into another sequence with higher randomness... | {
"Other": 1,
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
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