id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
cs/0405050 | Traffic Accident Analysis Using Decision Trees and Neural Networks | [
"cs.AI"
] | The costs of fatalities and injuries due to traffic accident have a great impact on society. This paper presents our research to model the severity of injury resulting from traffic accidents using artificial neural networks and decision trees. We have applied them to an actual data set obtained from the National Automo... | {
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cs/0405051 | Short Term Load Forecasting Models in Czech Republic Using Soft
Computing Paradigms | [
"cs.AI"
] | This paper presents a comparative study of six soft computing models namely multilayer perceptron networks, Elman recurrent neural network, radial basis function network, Hopfield model, fuzzy inference system and hybrid fuzzy neural network for the hourly electricity demand forecast of Czech Republic. The soft computi... | {
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cs/0405052 | Decision Support Systems Using Intelligent Paradigms | [
"cs.AI"
] | Decision-making is a process of choosing among alternative courses of action for solving complicated problems where multi-criteria objectives are involved. The past few years have witnessed a growing recognition of Soft Computing (SC) technologies that underlie the conception, design and utilization of intelligent syst... | {
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cs/0405054 | The model of the tables in design documentation for operating with the
electronic catalogs and for specifications making in a CAD system | [
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] | The hierarchic block model of the tables in design documentation as a part of a CAD system is described, intended for automatic specifications making of elements of the drawings, with usage of the electronic catalogs. The model is created for needs of a CAD system of reconstruction of the industrial plants, where the r... | {
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cs/0405055 | Modular technology of developing of the extensions of a CAD system.
Axonometric piping diagrams. Parametric representation | [
"cs.CE",
"cs.DS"
] | Applying the modular technology of developing of the problem-oriented extensions of a CAD system to a problem of automation of creating of the axonometric piping diagrams on an example of the program system TechnoCAD GlassX is described. The proximity of composition of the schemas is detected for special technological ... | {
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cs/0405056 | Modular technology of developing of the extensions of a CAD system. The
axonometric piping diagrams. Common and special operations | [
"cs.CE",
"cs.DS"
] | Applying the modular technology of developing of the problem-oriented extensions of a CAD system to a problem of automation of creating of the axonometric piping diagrams on an example of the program system TechnoCAD GlassX is described. The features of realization of common operations, composition and realization of s... | {
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cs/0405057 | Mathematical and programming toolkit of the computer aided design of the
axonometric piping diagrams | [
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"cs.DS"
] | The problem of the automation of the designing of the axonometric piping diagrams include, as the minimum, manipulations with the flat schemas of three-dimensional wireframe objects (with dimension of 2,5). The specialized model, methodical and mathematical approaches are required because of large bulk of calculuss. Co... | {
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cs/0405062 | Efficiency Enhancement of Probabilistic Model Building Genetic
Algorithms | [
"cs.NE"
] | This paper presents two different efficiency-enhancement techniques for probabilistic model building genetic algorithms. The first technique proposes the use of a mutation operator which performs local search in the sub-solution neighborhood identified through the probabilistic model. The second technique proposes buil... | {
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cs/0405063 | Let's Get Ready to Rumble: Crossover Versus Mutation Head to Head | [
"cs.NE"
] | This paper analyzes the relative advantages between crossover and mutation on a class of deterministic and stochastic additively separable problems. This study assumes that the recombination and mutation operators have the knowledge of the building blocks (BBs) and effectively exchange or search among competing BBs. Fa... | {
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cs/0405064 | Designing Competent Mutation Operators via Probabilistic Model Building
of Neighborhoods | [
"cs.NE"
] | This paper presents a competent selectomutative genetic algorithm (GA), that adapts linkage and solves hard problems quickly, reliably, and accurately. A probabilistic model building process is used to automatically identify key building blocks (BBs) of the search problem. The mutation operator uses the probabilistic m... | {
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cs/0405065 | Efficiency Enhancement of Genetic Algorithms via Building-Block-Wise
Fitness Estimation | [
"cs.NE"
] | This paper studies fitness inheritance as an efficiency enhancement technique for a class of competent genetic algorithms called estimation distribution algorithms. Probabilistic models of important sub-solutions are developed to estimate the fitness of a proportion of individuals in the population, thereby avoiding co... | {
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cs/0405069 | Mining Frequent Itemsets from Secondary Memory | [
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] | Mining frequent itemsets is at the core of mining association rules, and is by now quite well understood algorithmically. However, most algorithms for mining frequent itemsets assume that the main memory is large enough for the data structures used in the mining, and very few efficient algorithms deal with the case whe... | {
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cs/0405071 | Regression with respect to sensing actions and partial states | [
"cs.AI"
] | In this paper, we present a state-based regression function for planning domains where an agent does not have complete information and may have sensing actions. We consider binary domains and employ the 0-approximation [Son & Baral 2001] to define the regression function. In binary domains, the use of 0-approximation m... | {
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cs/0405072 | Grid Databases for Shared Image Analysis in the MammoGrid Project | [
"cs.DB",
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] | The MammoGrid project aims to prove that Grid infrastructures can be used for collaborative clinical analysis of database-resident but geographically distributed medical images. This requires: a) the provision of a clinician-facing front-end workstation and b) the ability to service real-world clinician queries across ... | {
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cs/0405074 | MammoGrid: A Service Oriented Architecture based Medical Grid
Application | [
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] | The MammoGrid project has recently delivered its first proof-of-concept prototype using a Service-Oriented Architecture (SOA)-based Grid application to enable distributed computing spanning national borders. The underlying AliEn Grid infrastructure has been selected because of its practicality and because of its emerge... | {
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cs/0405076 | An Abductive Framework For Computing Knowledge Base Updates | [
"cs.DB"
] | This paper introduces an abductive framework for updating knowledge bases represented by extended disjunctive programs. We first provide a simple transformation from abductive programs to update programs which are logic programs specifying changes on abductive hypotheses. Then, extended abduction, which was introduced ... | {
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cs/0405087 | A Grid Information Infrastructure for Medical Image Analysis | [
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] | The storage and manipulation of digital images and the analysis of the information held in those images are essential requirements for next-generation medical information systems. The medical community has been exploring collaborative approaches for managing image data and exchanging knowledge and Grid technology [1] i... | {
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cs/0405090 | Propositional Defeasible Logic has Linear Complexity | [
"cs.AI"
] | Defeasible logic is a rule-based nonmonotonic logic, with both strict and defeasible rules, and a priority relation on rules. We show that inference in the propositional form of the logic can be performed in linear time. This contrasts markedly with most other propositional nonmonotonic logics, in which inference is in... | {
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cs/0405093 | Computerized Face Detection and Recognition | [
"cs.CV"
] | This publication presents methods for face detection, analysis and recognition: fast normalized cross-correlation (fast correlation coefficient) between multiple templates based face pre-detection method, method for detection of exact face contour based on snakes and Generalized Gradient Vector Flow field, method for c... | {
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cs/0405095 | Blind Detection and Compensation of Camera Lens Geometric Distortions | [
"cs.CV"
] | This paper presents a blind detection and compensation technique for camera lens geometric distortions. The lens distortion introduces higher-order correlations in the frequency domain and in turn it can be detected using higher-order spectral analysis tools without assuming any specific calibration target. The existin... | {
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cs/0405098 | A Logic for Reasoning about Evidence | [
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] | We introduce a logic for reasoning about evidence that essentially views evidence as a function from prior beliefs (before making an observation) to posterior beliefs (after making the observation). We provide a sound and complete axiomatization for the logic, and consider the complexity of the decision problem. Althou... | {
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cs/0405099 | Web search engine based on DNS | [
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"cs.IR"
] | Now no web search engine can cover more than 60 percent of all the pages on Internet. The update interval of most pages database is almost one month. This condition hasn't changed for many years. Converge and recency problems have become the bottleneck problem of current web search engine. To solve these problems, a ne... | {
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cs/0405104 | Knowledge Reduction and Discovery based on Demarcation Information | [
"cs.LG",
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"cs.IT",
"math.IT"
] | Knowledge reduction, includes attribute reduction and value reduction, is an important topic in rough set literature. It is also closely relevant to other fields, such as machine learning and data mining. In this paper, an algorithm called TWI-SQUEEZE is proposed. It can find a reduct, or an irreducible attribute subse... | {
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cs/0405106 | Pruning Search Space in Defeasible Argumentation | [
"cs.AI"
] | Defeasible argumentation has experienced a considerable growth in AI in the last decade. Theoretical results have been combined with development of practical applications in AI & Law, Case-Based Reasoning and various knowledge-based systems. However, the dialectical process associated with inference is computationally ... | {
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cs/0405107 | A Framework for Combining Defeasible Argumentation with Labeled
Deduction | [
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] | In the last years, there has been an increasing demand of a variety of logical systems, prompted mostly by applications of logic in AI and other related areas. Labeled Deductive Systems (LDS) were developed as a flexible methodology to formalize such a kind of complex logical systems. Defeasible argumentation has prove... | {
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cs/0405113 | A proposal to design expert system for the calculations in the domain of
QFT | [
"cs.AI"
] | Main purposes of the paper are followings: 1) To show examples of the calculations in domain of QFT via ``derivative rules'' of an expert system; 2) To consider advantages and disadvantage that technology of the calculations; 3) To reflect about how one would develop new physical theories, what knowledge would be usefu... | {
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cs/0406001 | Side-Information Coding with Turbo Codes and its Application to Quantum
Key Distribution | [
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"quant-ph"
] | Turbo coding is a powerful class of forward error correcting codes, which can achieve performances close to the Shannon limit. The turbo principle can be applied to the problem of side-information source coding, and we investigate here its application to the reconciliation problem occurring in a continuous-variable qua... | {
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cs/0406003 | Algorithms for weighted multi-tape automata | [
"cs.CL",
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] | This report defines various operations for weighted multi-tape automata (WMTAs) and describes algorithms that have been implemented for those operations in the WFSC toolkit. Some algorithms are new, others are known or similar to known algorithms. The latter will be recalled to make this report more complete and self-s... | {
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cs/0406004 | Application of Business Intelligence In Banks (Pakistan) | [
"cs.DB"
] | The financial services industry is rapidly changing. Factors such as globalization, deregulation, mergers and acquisitions, competition from non-financial institutions, and technological innovation, have forced companies to re-think their business.Many large companies have been using Business Intelligence (BI) computer... | {
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cs/0406007 | Parallel Mixed Bayesian Optimization Algorithm: A Scaleup Analysis | [
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] | Estimation of Distribution Algorithms have been proposed as a new paradigm for evolutionary optimization. This paper focuses on the parallelization of Estimation of Distribution Algorithms. More specifically, the paper discusses how to predict performance of parallel Mixed Bayesian Optimization Algorithm (MBOA) that is... | {
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cs/0406008 | Image compression by rectangular wavelet transform | [
"cs.CV"
] | We study image compression by a separable wavelet basis $\big\{\psi(2^{k_1}x-i)\psi(2^{k_2}y-j),$ $\phi(x-i)\psi(2^{k_2}y-j),$ $\psi(2^{k_1}(x-i)\phi(y-j),$ $\phi(x-i)\phi(y-i)\big\},$ where $k_1, k_2 \in \mathbb{Z}_+$; $i,j\in\mathbb{Z}$; and $\phi,\psi$ are elements of a standard biorthogonal wavelet basis in $L_2(\m... | {
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cs/0406011 | Blind Construction of Optimal Nonlinear Recursive Predictors for
Discrete Sequences | [
"cs.LG",
"math.ST",
"nlin.CD",
"physics.data-an",
"stat.TH"
] | We present a new method for nonlinear prediction of discrete random sequences under minimal structural assumptions. We give a mathematical construction for optimal predictors of such processes, in the form of hidden Markov models. We then describe an algorithm, CSSR (Causal-State Splitting Reconstruction), which approx... | {
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cs/0406015 | Zipf's law and the creation of musical context | [
"cs.CL",
"cond-mat.stat-mech"
] | This article discusses the extension of the notion of context from linguistics to the domain of music. In language, the statistical regularity known as Zipf's law -which concerns the frequency of usage of different words- has been quantitatively related to the process of text generation. This connection is established ... | {
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cs/0406016 | Schema-based Scheduling of Event Processors and Buffer Minimization for
Queries on Structured Data Streams | [
"cs.DB"
] | We introduce an extension of the XQuery language, FluX, that supports event-based query processing and the conscious handling of main memory buffers. Purely event-based queries of this language can be executed on streaming XML data in a very direct way. We then develop an algorithm that allows to efficiently rewrite XQ... | {
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cs/0406017 | Using Self-Organising Mappings to Learn the Structure of Data Manifolds | [
"cs.NE",
"cs.CV"
] | In this paper it is shown how to map a data manifold into a simpler form by progressively discarding small degrees of freedom. This is the key to self-organising data fusion, where the raw data is embedded in a very high-dimensional space (e.g. the pixel values of one or more images), and the requirement is to isolate ... | {
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cs/0406021 | A direct formulation for sparse PCA using semidefinite programming | [
"cs.CE"
] | We examine the problem of approximating, in the Frobenius-norm sense, a positive, semidefinite symmetric matrix by a rank-one matrix, with an upper bound on the cardinality of its eigenvector. The problem arises in the decomposition of a covariance matrix into sparse factors, and has wide applications ranging from biol... | {
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cs/0406025 | Directional Consistency for Continuous Numerical Constraints | [
"cs.AI",
"cs.MS"
] | Bounds consistency is usually enforced on continuous constraints by first decomposing them into binary and ternary primitives. This decomposition has long been shown to drastically slow down the computation of solutions. To tackle this, Benhamou et al. have introduced an algorithm that avoids formally decomposing const... | {
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cs/0406029 | Subset Queries in Relational Databases | [
"cs.DB"
] | In this paper, we motivated the need for relational database systems to support subset query processing. We defined new operators in relational algebra, and new constructs in SQL for expressing subset queries. We also illustrated the applicability of subset queries through different examples expressed using extended SQ... | {
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cs/0406031 | A Public Reference Implementation of the RAP Anaphora Resolution
Algorithm | [
"cs.CL"
] | This paper describes a standalone, publicly-available implementation of the Resolution of Anaphora Procedure (RAP) given by Lappin and Leass (1994). The RAP algorithm resolves third person pronouns, lexical anaphors, and identifies pleonastic pronouns. Our implementation, JavaRAP, fills a current need in anaphora resol... | {
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cs/0406032 | A Dynamic Clustering-Based Markov Model for Web Usage Mining | [
"cs.IR",
"cs.AI"
] | Markov models have been widely utilized for modelling user web navigation behaviour. In this work we propose a dynamic clustering-based method to increase a Markov model's accuracy in representing a collection of user web navigation sessions. The method makes use of the state cloning concept to duplicate states in a wa... | {
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cs/0406038 | A New Approach to Draw Detection by Move Repetition in Computer Chess
Programming | [
"cs.AI"
] | We will try to tackle both the theoretical and practical aspects of a very important problem in chess programming as stated in the title of this article - the issue of draw detection by move repetition. The standard approach that has so far been employed in most chess programs is based on utilising positional matrices ... | {
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cs/0406039 | Long Nonbinary Codes Exceeding the Gilbert - Varshamov Bound for any
Fixed Distance | [
"cs.IT",
"math.IT"
] | Let A(q,n,d) denote the maximum size of a q-ary code of length n and distance d. We study the minimum asymptotic redundancy \rho(q,n,d)=n-log_q A(q,n,d) as n grows while q and d are fixed. For any d and q<=d-1, long algebraic codes are designed that improve on the BCH codes and have the lowest asymptotic redundancy \rh... | {
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cs/0406042 | Business Process Measures | [
"cs.CE",
"cs.PF"
] | The paper proposes a new methodology for defining business process measures and their computation. The approach is based on metamodeling according to MOF. Especially, a metamodel providing precise definitions of typical process measures for UML activity diagram-like notation is proposed, including precise definitions h... | {
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cs/0406043 | The Computational Complexity of Orientation Search Problems in
Cryo-Electron Microscopy | [
"cs.DS",
"cs.CG",
"cs.CV"
] | In this report we study the problem of determining three-dimensional orientations for noisy projections of randomly oriented identical particles. The problem is of central importance in the tomographic reconstruction of the density map of macromolecular complexes from electron microscope images and it has been studied ... | {
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cs/0406047 | Self-organizing neural networks in classification and image recognition | [
"cs.CV",
"cs.AI"
] | Self-organizing neural networks are used for brick finding in OPERA experiment. Self-organizing neural networks and wavelet analysis used for recognition and extraction of car numbers from images. | {
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cs/0406048 | On Expanders Graphs: Parameters and Applications | [
"cs.IT",
"math.IT"
] | We give a new lower bound on the expansion coefficient of an edge-vertex graph of a $d$-regular graph. As a consequence, we obtain an improvement on the lower bound on relative minimum distance of the expander codes constructed by Sipser and Spielman. We also derive some improved results on the vertex expansion of grap... | {
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cs/0406050 | Finite-Length Scaling for Iteratively Decoded LDPC Ensembles | [
"cs.IT",
"cond-mat.dis-nn",
"cs.DM",
"math.IT"
] | In this paper we investigate the behavior of iteratively decoded low-density parity-check codes over the binary erasure channel in the so-called ``waterfall region." We show that the performance curves in this region follow a very basic scaling law. We conjecture that essentially the same scaling behavior applies in a ... | {
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cs/0406054 | Building a linguistic corpus from bee dance data | [
"cs.CL"
] | This paper discusses the problems and possibility of collecting bee dance data in a linguistic \textit{corpus} and use linguistic instruments such as Zipf's law and entropy statistics to decide on the question whether the dance carries information of any kind. We describe this against the historical background of attem... | {
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cs/0406055 | Web Services: A Process Algebra Approach | [
"cs.AI",
"cs.DB"
] | It is now well-admitted that formal methods are helpful for many issues raised in the Web service area. In this paper we present a framework for the design and verification of WSs using process algebras and their tools. We define a two-way mapping between abstract specifications written using these calculi and executab... | {
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cs/0406056 | P=NP | [
"cs.CC",
"cs.AI"
] | We claim to resolve the P=?NP problem via a formal argument for P=NP. | {
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cs/0406058 | Proofs of Zero Knowledge | [
"cs.CR",
"cs.DB"
] | We present a protocol for verification of ``no such entry'' replies from databases. We introduce a new cryptographic primitive as the underlying structure, the keyed hash tree, which is an extension of Merkle's hash tree. We compare our scheme to Buldas et al.'s Undeniable Attesters and Micali et al.'s Zero Knowledge S... | {
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cs/0406060 | Well-Definedness and Semantic Type-Checking in the Nested Relational
Calculus and XQuery | [
"cs.DB",
"cs.PL"
] | Two natural decision problems regarding the XML query language XQuery are well-definedness and semantic type-checking. We study these problems in the setting of a relational fragment of XQuery. We show that well-definedness and semantic type-checking are undecidable, even in the positive-existential case. Nevertheless,... | {
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cs/0407002 | Annotating Predicate-Argument Structure for a Parallel Treebank | [
"cs.CL"
] | We report on a recently initiated project which aims at building a multi-layered parallel treebank of English and German. Particular attention is devoted to a dedicated predicate-argument layer which is used for aligning translationally equivalent sentences of the two languages. We describe both our conceptual decision... | {
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cs/0407004 | Zero-error communication over networks | [
"cs.IT",
"cs.CR",
"math.IT"
] | Zero-Error communication investigates communication without any error. By defining channels without probabilities, results from Elias can be used to completely characterize which channel can simulate which other channels. We introduce the ambiguity of a channel, which completely characterizes the possibility in princip... | {
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cs/0407005 | Statistical Machine Translation by Generalized Parsing | [
"cs.CL"
] | Designers of statistical machine translation (SMT) systems have begun to employ tree-structured translation models. Systems involving tree-structured translation models tend to be complex. This article aims to reduce the conceptual complexity of such systems, in order to make them easier to design, implement, debug, us... | {
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cs/0407007 | The semijoin algebra and the guarded fragment | [
"cs.DB",
"cs.LO"
] | The semijoin algebra is the variant of the relational algebra obtained by replacing the join operator by the semijoin operator. We discuss some interesting connections between the semijoin algebra and the guarded fragment of first-order logic. We also provide an Ehrenfeucht-Fraisse game, characterizing the discerning p... | {
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cs/0407008 | Autogenic Training With Natural Language Processing Modules: A Recent
Tool For Certain Neuro Cognitive Studies | [
"cs.AI"
] | Learning to respond to voice-text input involves the subject's ability in understanding the phonetic and text based contents and his/her ability to communicate based on his/her experience. The neuro-cognitive facility of the subject has to support two important domains in order to make the learning process complete. In... | {
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cs/0407009 | Search Using N-gram Technique Based Statistical Analysis for Knowledge
Extraction in Case Based Reasoning Systems | [
"cs.AI",
"cs.IR"
] | Searching techniques for Case Based Reasoning systems involve extensive methods of elimination. In this paper, we look at a new method of arriving at the right solution by performing a series of transformations upon the data. These involve N-gram based comparison and deduction of the input data with the case data, usin... | {
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cs/0407010 | Improved error bounds for the erasure/list scheme: the binary and
spherical cases | [
"cs.IT",
"math.IT"
] | We derive improved bounds on the error and erasure rate for spherical codes and for binary linear codes under Forney's erasure/list decoding scheme and prove some related results. | {
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cs/0407011 | Distance distribution of binary codes and the error probability of
decoding | [
"cs.IT",
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] | We address the problem of bounding below the probability of error under maximum likelihood decoding of a binary code with a known distance distribution used on a binary symmetric channel. An improved upper bound is given for the maximum attainable exponent of this probability (the reliability function of the channel). ... | {
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cs/0407016 | Learning for Adaptive Real-time Search | [
"cs.AI",
"cs.LG"
] | Real-time heuristic search is a popular model of acting and learning in intelligent autonomous agents. Learning real-time search agents improve their performance over time by acquiring and refining a value function guiding the application of their actions. As computing the perfect value function is typically intractabl... | {
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cs/0407021 | Multi-agent coordination using nearest neighbor rules: revisiting the
Vicsek model | [
"cs.MA",
"cs.AI"
] | Recently, Jadbabaie, Lin, and Morse (IEEE TAC, 48(6)2003:988-1001) offered a mathematical analysis of the discrete time model of groups of mobile autonomous agents raised by Vicsek et al. in 1995. In their paper, Jadbabaie et al. showed that all agents shall move in the same heading, provided that these agents are peri... | {
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cs/0407024 | An agent-based intelligent environmental monitoring system | [
"cs.MA",
"cs.CE"
] | Fairly rapid environmental changes call for continuous surveillance and on-line decision making. There are two main areas where IT technologies can be valuable. In this paper we present a multi-agent system for monitoring and assessing air-quality attributes, which uses data coming from a meteorological station. A comm... | {
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cs/0407025 | An agent framework for dynamic agent retraining: Agent academy | [
"cs.MA"
] | Agent Academy (AA) aims to develop a multi-agent society that can train new agents for specific or general tasks, while constantly retraining existing agents in a recursive mode. The system is based on collecting information both from the environment and the behaviors of the acting agents and their related successes/fa... | {
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cs/0407026 | Summarizing Encyclopedic Term Descriptions on the Web | [
"cs.CL"
] | We are developing an automatic method to compile an encyclopedic corpus from the Web. In our previous work, paragraph-style descriptions for a term are extracted from Web pages and organized based on domains. However, these descriptions are independent and do not comprise a condensed text as in hand-crafted encyclopedi... | {
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cs/0407027 | Unsupervised Topic Adaptation for Lecture Speech Retrieval | [
"cs.CL"
] | We are developing a cross-media information retrieval system, in which users can view specific segments of lecture videos by submitting text queries. To produce a text index, the audio track is extracted from a lecture video and a transcription is generated by automatic speech recognition. In this paper, to improve the... | {
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cs/0407028 | Effects of Language Modeling on Speech-driven Question Answering | [
"cs.CL"
] | We integrate automatic speech recognition (ASR) and question answering (QA) to realize a speech-driven QA system, and evaluate its performance. We adapt an N-gram language model to natural language questions, so that the input of our system can be recognized with a high accuracy. We target WH-questions which consist of... | {
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cs/0407029 | Static versus Dynamic Arbitrage Bounds on Multivariate Option Prices | [
"cs.CE"
] | We compare static arbitrage price bounds on basket calls, i.e. bounds that only involve buy-and-hold trading strategies, with the price range obtained within a multi-variate generalization of the Black-Scholes model. While there is no gap between these two sets of prices in the univariate case, we observe here that con... | {
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cs/0407034 | On the Complexity of Case-Based Planning | [
"cs.AI",
"cs.CC"
] | We analyze the computational complexity of problems related to case-based planning: planning when a plan for a similar instance is known, and planning from a library of plans. We prove that planning from a single case has the same complexity than generative planning (i.e., planning "from scratch"); using an extended de... | {
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cs/0407035 | A Framework for High-Accuracy Privacy-Preserving Mining | [
"cs.DB",
"cs.IR"
] | To preserve client privacy in the data mining process, a variety of techniques based on random perturbation of data records have been proposed recently. In this paper, we present a generalized matrix-theoretic model of random perturbation, which facilitates a systematic approach to the design of perturbation mechanisms... | {
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cs/0407037 | Generalized Evolutionary Algorithm based on Tsallis Statistics | [
"cs.AI"
] | Generalized evolutionary algorithm based on Tsallis canonical distribution is proposed. The algorithm uses Tsallis generalized canonical distribution to weigh the configurations for `selection' instead of Gibbs-Boltzmann distribution. Our simulation results show that for an appropriate choice of non-extensive index tha... | {
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cs/0407039 | On the Convergence Speed of MDL Predictions for Bernoulli Sequences | [
"cs.LG",
"cs.AI",
"cs.IT",
"math.IT",
"math.PR"
] | We consider the Minimum Description Length principle for online sequence prediction. If the underlying model class is discrete, then the total expected square loss is a particularly interesting performance measure: (a) this quantity is bounded, implying convergence with probability one, and (b) it additionally specifie... | {
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cs/0407040 | Decomposition Based Search - A theoretical and experimental evaluation | [
"cs.AI"
] | In this paper we present and evaluate a search strategy called Decomposition Based Search (DBS) which is based on two steps: subproblem generation and subproblem solution. The generation of subproblems is done through value ranking and domain splitting. Subdomains are explored so as to generate, according to the heuris... | {
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cs/0407042 | Postponing Branching Decisions | [
"cs.AI"
] | Solution techniques for Constraint Satisfaction and Optimisation Problems often make use of backtrack search methods, exploiting variable and value ordering heuristics. In this paper, we propose and analyse a very simple method to apply in case the value ordering heuristic produces ties: postponing the branching decisi... | {
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cs/0407044 | Reduced cost-based ranking for generating promising subproblems | [
"cs.AI"
] | In this paper, we propose an effective search procedure that interleaves two steps: subproblem generation and subproblem solution. We mainly focus on the first part. It consists of a variable domain value ranking based on reduced costs. Exploiting the ranking, we generate, in a Limited Discrepancy Search tree, the most... | {
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cs/0407046 | A Bimachine Compiler for Ranked Tagging Rules | [
"cs.CL"
] | This paper describes a novel method of compiling ranked tagging rules into a deterministic finite-state device called a bimachine. The rules are formulated in the framework of regular rewrite operations and allow unrestricted regular expressions in both left and right rule contexts. The compiler is illustrated by an ap... | {
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cs/0407047 | Channel-Independent and Sensor-Independent Stimulus Representations | [
"cs.CV",
"cs.AI"
] | This paper shows how a machine, which observes stimuli through an uncharacterized, uncalibrated channel and sensor, can glean machine-independent information (i.e., channel- and sensor-independent information) about the stimuli. First, we demonstrate that a machine defines a specific coordinate system on the stimulus s... | {
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cs/0407049 | Preferred Answer Sets for Ordered Logic Programs | [
"cs.LO",
"cs.AI"
] | We extend answer set semantics to deal with inconsistent programs (containing classical negation), by finding a ``best'' answer set. Within the context of inconsistent programs, it is natural to have a partial order on rules, representing a preference for satisfying certain rules, possibly at the cost of violating less... | {
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cs/0407053 | Design of a Parallel and Distributed Web Search Engine | [
"cs.IR",
"cs.DC"
] | This paper describes the architecture of MOSE (My Own Search Engine), a scalable parallel and distributed engine for searching the web. MOSE was specifically designed to efficiently exploit affordable parallel architectures, such as clusters of workstations. Its modular and scalable architecture can easily be tuned to ... | {
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cs/0407054 | From truth to computability I | [
"cs.LO",
"cs.AI",
"cs.GT",
"math.LO"
] | The recently initiated approach called computability logic is a formal theory of interactive computation. See a comprehensive online source on the subject at http://www.cis.upenn.edu/~giorgi/cl.html . The present paper contains a soundness and completeness proof for the deductive system CL3 which axiomatizes the most b... | {
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cs/0407057 | Universal Convergence of Semimeasures on Individual Random Sequences | [
"cs.LG",
"cs.AI",
"cs.CC",
"cs.IT",
"math.IT",
"math.PR"
] | Solomonoff's central result on induction is that the posterior of a universal semimeasure M converges rapidly and with probability 1 to the true sequence generating posterior mu, if the latter is computable. Hence, M is eligible as a universal sequence predictor in case of unknown mu. Despite some nearby results and pr... | {
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cs/0407060 | Tight bounds for LDPC and LDGM codes under MAP decoding | [
"cs.IT",
"cond-mat.dis-nn",
"math.IT"
] | A new method for analyzing low density parity check (LDPC) codes and low density generator matrix (LDGM) codes under bit maximum a posteriori probability (MAP) decoding is introduced. The method is based on a rigorous approach to spin glasses developed by Francesco Guerra. It allows to construct lower bounds on the ent... | {
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cs/0407061 | A measure of similarity between graph vertices | [
"cs.IR",
"cond-mat.dis-nn",
"cs.DM",
"physics.data-an"
] | We introduce a concept of similarity between vertices of directed graphs. Let G_A and G_B be two directed graphs. We define a similarity matrix whose (i, j)-th real entry expresses how similar vertex j (in G_A) is to vertex i (in G_B. The similarity matrix can be obtained as the limit of the normalized even iterates of... | {
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cs/0407064 | A Sequent Calculus and a Theorem Prover for Standard Conditional Logics | [
"cs.LO",
"cs.AI"
] | In this paper we present a cut-free sequent calculus, called SeqS, for some standard conditional logics, namely CK, CK+ID, CK+MP and CK+MP+ID. The calculus uses labels and transition formulas and can be used to prove decidability and space complexity bounds for the respective logics. We also present CondLean, a theorem... | {
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cs/0407065 | Word Sense Disambiguation by Web Mining for Word Co-occurrence
Probabilities | [
"cs.CL",
"cs.IR",
"cs.LG"
] | This paper describes the National Research Council (NRC) Word Sense Disambiguation (WSD) system, as applied to the English Lexical Sample (ELS) task in Senseval-3. The NRC system approaches WSD as a classical supervised machine learning problem, using familiar tools such as the Weka machine learning software and Brill'... | {
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cs/0408001 | Semantic Linking - a Context-Based Approach to Interactivity in
Hypermedia | [
"cs.IR",
"cs.LG"
] | The semantic Web initiates new, high level access schemes to online content and applications. One area of superior need for a redefined content exploration is given by on-line educational applications and their concepts of interactivity in the framework of open hypermedia systems. In the present paper we discuss aspect... | {
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cs/0408004 | Hypermedia Learning Objects System - On the Way to a Semantic
Educational Web | [
"cs.IR",
"cs.LG"
] | While eLearning systems become more and more popular in daily education, available applications lack opportunities to structure, annotate and manage their contents in a high-level fashion. General efforts to improve these deficits are taken by initiatives to define rich meta data sets and a semanticWeb layer. In the pr... | {
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cs/0408005 | Educational Content Management - A Cellular Approach | [
"cs.CY",
"cs.IR"
] | In recent times online educational applications more and more are requested to provide self-consistent learning offers for students at the university level. Consequently they need to cope with the wide range of complexity and interrelations university course teaching brings along. An urgent need to overcome simplistica... | {
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cs/0408006 | Why Two Sexes? | [
"cs.NE",
"cs.GL",
"q-bio.PE"
] | Evolutionary role of the separation into two sexes from a cyberneticist's point of view. [I translated this 1965 article from Russian "Nauka i Zhizn" (Science and Life) in 1988. In a popular form, the article puts forward several useful ideas not all of which even today are necessarily well known or widely accepted. Bo... | {
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cs/0408007 | Online convex optimization in the bandit setting: gradient descent
without a gradient | [
"cs.LG",
"cs.CC"
] | We consider a the general online convex optimization framework introduced by Zinkevich. In this setting, there is a sequence of convex functions. Each period, we must choose a signle point (from some feasible set) and pay a cost equal to the value of the next function on our chosen point. Zinkevich shows that, if the e... | {
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cs/0408008 | Iterative Quantization Using Codes On Graphs | [
"cs.IT",
"math.IT"
] | We study codes on graphs combined with an iterative message passing algorithm for quantization. Specifically, we consider the binary erasure quantization (BEQ) problem which is the dual of the binary erasure channel (BEC) coding problem. We show that duals of capacity achieving codes for the BEC yield codes which appro... | {
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cs/0408010 | A Simple Proportional Conflict Redistribution Rule | [
"cs.AI"
] | One proposes a first alternative rule of combination to WAO (Weighted Average Operator) proposed recently by Josang, Daniel and Vannoorenberghe, called Proportional Conflict Redistribution rule (denoted PCR1). PCR1 and WAO are particular cases of WO (the Weighted Operator) because the conflicting mass is redistributed ... | {
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cs/0408011 | The asymptotic number of binary codes and binary matroids | [
"cs.IT",
"cs.DM",
"math.IT"
] | The asyptotic number of nonequivalent binary n-codes is determined. This is also the asymptotic number of nonisomorphic binary n-matroids. The connection to a result of Lefmann, Roedl, Phelps is explored. The latter states that almost all binary n-codes have a trivial automorphism group. | {
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cs/0408012 | Three-Dimensional Face Orientation and Gaze Detection from a Single
Image | [
"cs.CV",
"cs.HC"
] | Gaze detection and head orientation are an important part of many advanced human-machine interaction applications. Many systems have been proposed for gaze detection. Typically, they require some form of user cooperation and calibration. Additionally, they may require multiple cameras and/or restricted head positions. ... | {
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cs/0408017 | Improved Upper Bound for the Redundancy of Fix-Free Codes | [
"cs.IT",
"math.IT"
] | A variable-length code is a fix-free code if no codeword is a prefix or a suffix of any other codeword. In a fix-free code any finite sequence of codewords can be decoded in both directions, which can improve the robustness to channel noise and speed up the decoding process. In this paper we prove a new sufficient cond... | {
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cs/0408021 | An Algorithm for Quasi-Associative and Quasi-Markovian Rules of
Combination in Information Fusion | [
"cs.AI"
] | In this paper one proposes a simple algorithm of combining the fusion rules, those rules which first use the conjunctive rule and then the transfer of conflicting mass to the non-empty sets, in such a way that they gain the property of associativity and fulfill the Markovian requirement for dynamic fusion. Also, a new ... | {
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} |
cs/0408023 | On Global Warming (Softening Global Constraints) | [
"cs.AI",
"cs.PL"
] | We describe soft versions of the global cardinality constraint and the regular constraint, with efficient filtering algorithms maintaining domain consistency. For both constraints, the softening is achieved by augmenting the underlying graph. The softened constraints can be used to extend the meta-constraint framework ... | {
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} |
cs/0408026 | Incremental Construction of Minimal Acyclic Sequential Transducers from
Unsorted Data | [
"cs.CL",
"cs.DS"
] | This paper presents an efficient algorithm for the incremental construction of a minimal acyclic sequential transducer (ST) for a dictionary consisting of a list of input and output strings. The algorithm generalises a known method of constructing minimal finite-state automata (Daciuk et al. 2000). Unlike the algorithm... | {
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} |
cs/0408027 | CHR Grammars | [
"cs.CL",
"cs.PL"
] | A grammar formalism based upon CHR is proposed analogously to the way Definite Clause Grammars are defined and implemented on top of Prolog. These grammars execute as robust bottom-up parsers with an inherent treatment of ambiguity and a high flexibility to model various linguistic phenomena. The formalism extends prev... | {
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} |
cs/0408030 | The Revolution In Database System Architecture | [
"cs.DB"
] | Database system architectures are undergoing revolutionary changes. Algorithms and data are being unified by integrating programming languages with the database system. This gives an extensible object-relational system where non-procedural relational operators manipulate object sets. Coupled with this, each DBMS is now... | {
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} |
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