id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1104.1227 | Intervention in Power Control Games With Selfish Users | [
"cs.IT",
"cs.GT",
"cs.NI",
"math.IT"
] | We study the power control problem in wireless ad hoc networks with selfish users. Without incentive schemes, selfish users tend to transmit at their maximum power levels, causing significant interference to each other. In this paper, we study a class of incentive schemes based on intervention to induce selfish users t... | {
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1104.1237 | A Statistical Nonparametric Approach of Face Recognition: Combination of
Eigenface & Modified k-Means Clustering | [
"cs.CV"
] | Facial expressions convey non-verbal cues, which play an important role in interpersonal relations. Automatic recognition of human face based on facial expression can be an important component of natural human-machine interface. It may also be used in behavioural science. Although human can recognize the face practical... | {
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1104.1249 | The Design of a Novel Prismatic Drive for a Three-DOF
Parallel-Kinematics Machine | [
"cs.RO"
] | The design of a novel prismatic drive is reported in this paper. This transmission is based on Slide-o-Cam, a cam mechanism with multiple rollers mounted on a common translating follower. The design of Slide-o-Cam was reported elsewhere. This drive thus provides pure-rolling motion, thereby reducing the friction of rac... | {
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1104.1279 | Context Aware Multisensor Image Fusion for Military Sensor Networks
using Multi Agent System | [
"cs.MA"
] | This paper proposes a Context Aware Agent based Military Sensor Network (CAMSN) to form an improved infrastructure for multi-sensor image fusion. It considers contexts driven by a node and sink. The contexts such as general and critical object detection are node driven where as sensing time (such as day or night) is si... | {
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1104.1311 | Latent table discovery by semantic relationship extraction between
unrelated sets of entity sets of structured data sources | [
"cs.DB"
] | Querying is one of the basic functionality expected from a database system. Query efficiency is adversely affected by increase in the number of participating tables. Also, querying based on syntax largely limits the gamut of queries a database system can process. Syntactic queries rely on the database table structure, ... | {
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1104.1317 | Algorithm for Sensor Network Attitude Problem | [
"math.OC",
"cs.SY"
] | Sensor network attitude problem consists in retrieving the attitude of each sensor of a network knowing some relative orientations between pairs of sensors. The attitude of a sensor is its orientation in an absolute axis system. We present in this paper a method for solving the sensor network attitude problem using qua... | {
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1104.1320 | On the geometry of small weight codewords of dual algebraic geometric
codes | [
"math.AG",
"cs.IT",
"math.IT"
] | We investigate the geometry of the support of small weight codewords of dual algebraic geometric codes on smooth complete intersections by applying the powerful tools recently developed by Alain Couvreur. In particular, by restricting ourselves to the case of Hermitian codes, we recover and extend previous results obta... | {
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1104.1389 | Generalizing the Markov and covariance interpolation problem using
input-to-state filters | [
"math.OC",
"cs.SY"
] | In the Markov and covariance interpolation problem a transfer function $W$ is sought that match the first coefficients in the expansion of $W$ around zero and the first coefficients of the Laurent expansion of the corresponding spectral density $WW^\star$. Here we solve an interpolation problem where the matched parame... | {
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1104.1408 | Coding Bounds for Multiple Phased-Burst Correction and Single Burst
Correction Codes | [
"cs.IT",
"math.IT"
] | In this paper, two upper bounds on the achievable code rate of linear block codes for multiple phased-burst correction (MPBC) are presented. One bound is constrained to a maximum correctable cyclic burst length within every subblock, or equivalently a constraint on the minimum error free length or gap within every phas... | {
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1104.1436 | Efficient First Order Methods for Linear Composite Regularizers | [
"cs.LG",
"math.OC",
"stat.ME",
"stat.ML"
] | A wide class of regularization problems in machine learning and statistics employ a regularization term which is obtained by composing a simple convex function \omega with a linear transformation. This setting includes Group Lasso methods, the Fused Lasso and other total variation methods, multi-task learning methods a... | {
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1104.1448 | A Basic Unified Context for Evaluating the Beam Forming and MIMO Options
in a Wireless Link | [
"cs.IT",
"math.IT"
] | For one isolated wireless link we take a unified look at simple beamforming (BF) as contrasted with MIMO to see how both emerge and under which conditions advantage goes to one or the other. Communication is from a high base array to a user in clutter. The channel propagation model is derived from fundamentals. The bas... | {
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1104.1450 | Plug-in Approach to Active Learning | [
"math.ST",
"cs.LG",
"stat.TH"
] | We present a new active learning algorithm based on nonparametric estimators of the regression function. Our investigation provides probabilistic bounds for the rates of convergence of the generalization error achievable by proposed method over a broad class of underlying distributions. We also prove minimax lower boun... | {
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1104.1457 | High-Rate Short-Block LDPC Codes for Iterative Decoding with
Applications to High-Density Magnetic Recording Channels | [
"cs.IT",
"math.IT"
] | This paper investigates the Triangle Single Parity Check (T/SPC) code, a novel class of high-rate low-complexity LDPC codes. T/SPC is a regular, soft decodable, linear-time encodable/decodable code. Compared to previous high-rate and low-complexity LDPC codes, such as the well-known Turbo Product Code / Single Parity C... | {
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1104.1471 | New Techniques for Upper-Bounding the ML Decoding Performance of Binary
Linear Codes | [
"cs.IT",
"math.IT"
] | In this paper, new techniques are presented to either simplify or improve most existing upper bounds on the maximum-likelihood (ML) decoding performance of the binary linear codes over additive white Gaussian noise (AWGN) channels. Firstly, the recently proposed union bound using truncated weight spectrums by Ma {\em e... | {
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1104.1472 | Gaussian Affine Feature Detector | [
"cs.CV"
] | A new method is proposed to get image features' geometric information. Using Gaussian as an input signal, a theoretical optimal solution to calculate feature's affine shape is proposed. Based on analytic result of a feature model, the method is different from conventional iterative approaches. From the model, feature's... | {
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1104.1477 | An Agent-based Architecture for a Knowledge-work Support System | [
"cs.HC",
"cs.AI",
"cs.MA"
] | Enhancement of technology-based system support for knowledge workers is an issue of great importance. The "Knowledge work Support System (KwSS)" framework analyzes this issue from a holistic perspective. KwSS proposes a set of design principles for building a comprehensive IT-based support system, which enhances the ca... | {
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1104.1485 | Fuzzy Rules and Evidence Theory for Satellite Image Analysis | [
"cs.CV"
] | Design of a fuzzy rule based classifier is proposed. The performance of the classifier for multispectral satellite image classification is improved using Dempster- Shafer theory of evidence that exploits information of the neighboring pixels. The classifiers are tested rigorously with two known images and their perform... | {
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1104.1506 | Prosper: image and robot-guided prostate brachytherapy | [
"cs.RO",
"physics.med-ph"
] | Brachytherapy for localized prostate cancer consists in destroying cancer by introducing iodine radioactive seeds into the gland through hollow needles. The planning of the position of the seeds and their introduction into the prostate is based on intra-operative ultrasound (US) imaging. We propose to optimize the glob... | {
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1104.1528 | Coded Modulation for Power Line Communications | [
"cs.IT",
"math.IT"
] | We discuss the application of coded modulation for power-line communications. We combine M-ary FSK with diversity and coding to make the transmission robust against permanent frequency disturbances and impulse noise. We give a particular example of the coding/modulation scheme that is in agreement with the existing CEN... | {
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1104.1546 | Physical Simulation of Inarticulate Robots | [
"cs.RO"
] | In this note we study the structure and the behavior of inarticulate robots. We introduce a robot that moves by successive revolvings. The robot's structure is analyzed, simulated and discussed in detail. | {
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1104.1550 | A bio-inspired image coder with temporal scalability | [
"cs.CV",
"cs.IT",
"cs.NE",
"math.IT"
] | We present a novel bio-inspired and dynamic coding scheme for static images. Our coder aims at reproducing the main steps of the visual stimulus processing in the mammalian retina taking into account its time behavior. The main novelty of this work is to show how to exploit the time behavior of the retina cells to ensu... | {
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1104.1556 | Benchmarking the Quality of Diffusion-Weighted Images | [
"cs.CV"
] | We present a novel method that allows for measuring the quality of diffusion-weighted MR images dependent on the image resolution and the image noise. For this purpose, we introduce a new thresholding technique so that noise and the signal can automatically be estimated from a single data set. Thus, no user interaction... | {
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1104.1582 | A Fuzzy Control Algorithm for the Electronic Stability Program optimized
for tyre burst control | [
"cs.SY",
"math.OC"
] | This paper introduces an improved Electronic Stability Program for cars that can deal with the sudden burst of a tyre. The Improved Electronic Stability Program (IESP) is based on a fuzzy logic algorithm. The IESP collects data from the same sensors of a standard ESP and acts on brakes/throttle with the same actuators.... | {
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1104.1605 | Efficient Top-K Retrieval in Online Social Tagging Networks | [
"cs.IR",
"cs.DB",
"cs.SI"
] | We consider in this paper top-k query answering in social tagging systems, also known as folksonomies. This problem requires a significant departure from existing, socially agnostic techniques. In a network-aware context, one can (and should) exploit the social links, which can indicate how users relate to the seeker a... | {
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1104.1672 | Dimension-free tail inequalities for sums of random matrices | [
"math.PR",
"cs.LG",
"stat.ML"
] | We derive exponential tail inequalities for sums of random matrices with no dependence on the explicit matrix dimensions. These are similar to the matrix versions of the Chernoff bound and Bernstein inequality except with the explicit matrix dimensions replaced by a trace quantity that can be small even when the dimens... | {
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1104.1677 | Automatic Vehicle Checking Agent (VCA) | [
"cs.AI"
] | A definition of intelligence is given in terms of performance that can be quantitatively measured. In this study, we have presented a conceptual model of Intelligent Agent System for Automatic Vehicle Checking Agent (VCA). To achieve this goal, we have introduced several kinds of agents that exhibit intelligent feature... | {
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1104.1678 | A Proposed Decision Support System/Expert System for Guiding Fresh
Students in Selecting a Faculty in Gomal University, Pakistan | [
"cs.AI"
] | This paper presents the design and development of a proposed rule based Decision Support System that will help students in selecting the best suitable faculty/major decision while taking admission in Gomal University, Dera Ismail Khan, Pakistan. The basic idea of our approach is to design a model for testing and measur... | {
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1104.1717 | Continuous and Discrete Adjoints to the Euler Equations for Fluids | [
"cs.CE",
"math.NA",
"physics.flu-dyn"
] | Adjoints are used in optimization to speed-up computations, simplify optimality conditions or compute sensitivities. Because time is reversed in adjoint equations with first order time derivatives, boundary conditions and transmission conditions through shocks can be difficult to understand. In this article we analyze ... | {
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1104.1742 | Asymptotic Capacity Analysis for Adaptive Transmission Schemes under
General Fading Distributions | [
"cs.IT",
"math.IT"
] | Asymptotic comparisons of ergodic channel capacity at high and low signal-to-noise ratios (SNRs) are provided for several adaptive transmission schemes over fading channels with general distributions, including optimal power and rate adaptation, rate adaptation only, channel inversion and its variants. Analysis of the ... | {
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1104.1745 | Multi-User Diversity with Random Number of Users | [
"cs.IT",
"math.IT"
] | Multi-user diversity is considered when the number of users in the system is random. The complete monotonicity of the error rate as a function of the (deterministic) number of users is established and it is proved that randomization of the number of users always leads to deterioration of average system performance at a... | {
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1104.1789 | Zipf's law unzipped | [
"physics.soc-ph",
"cs.SI"
] | Why does Zipf's law give a good description of data from seemingly completely unrelated phenomena? Here it is argued that the reason is that they can all be described as outcomes of a ubiquitous random group division: the elements can be citizens of a country and the groups family names, or the elements can be all the ... | {
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1104.1823 | Which weighted circulant networks have perfect state transfer? | [
"cs.DM",
"cs.IT",
"math.IT",
"quant-ph"
] | The question of perfect state transfer existence in quantum spin networks based on weighted graphs has been recently presented by many authors. We give a simple condition for characterizing weighted circulant graphs allowing perfect state transfer in terms of their eigenvalues. This is done by extending the results abo... | {
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1104.1824 | Simulating Spiking Neural P systems without delays using GPUs | [
"cs.DC",
"cs.ET",
"cs.FL",
"cs.NE",
"q-bio.NC"
] | We present in this paper our work regarding simulating a type of P system known as a spiking neural P system (SNP system) using graphics processing units (GPUs). GPUs, because of their architectural optimization for parallel computations, are well-suited for highly parallelizable problems. Due to the advent of general ... | {
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1104.1825 | Characterization of circulant graphs having perfect state transfer | [
"cs.DM",
"cs.IT",
"math.IT",
"quant-ph"
] | In this paper we answer the question of when circulant quantum spin networks with nearest-neighbor couplings can give perfect state transfer. The network is described by a circulant graph $G$, which is characterized by its circulant adjacency matrix $A$. Formally, we say that there exists a {\it perfect state transfer}... | {
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1104.1872 | Convex and Network Flow Optimization for Structured Sparsity | [
"math.OC",
"cs.LG",
"stat.ML"
] | We consider a class of learning problems regularized by a structured sparsity-inducing norm defined as the sum of l_2- or l_infinity-norms over groups of variables. Whereas much effort has been put in developing fast optimization techniques when the groups are disjoint or embedded in a hierarchy, we address here the ca... | {
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1104.1880 | Approximative Covariance Interpolation | [
"math.OC",
"cs.SY"
] | When methods of moments are used for identification of power spectral densities, a model is matched to estimated second order statistics such as, e.g., covariance estimates. If the estimates are good there is an infinite family of power spectra consistent with such an estimate and in applications, such as identificatio... | {
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1104.1892 | "Improved FCM algorithm for Clustering on Web Usage Mining" | [
"cs.IR",
"cs.CV"
] | In this paper we present clustering method is very sensitive to the initial center values, requirements on the data set too high, and cannot handle noisy data the proposal method is using information entropy to initialize the cluster centers and introduce weighting parameters to adjust the location of cluster centers a... | {
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1104.1905 | A simulation of the Neolithic transition in Western Eurasia | [
"cs.MA",
"q-bio.PE"
] | Farming and herding were introduced to Europe from the Near East and Anatolia; there are, however, considerable arguments about the mechanisms of this transition. Were it people who moved and outplaced the indigenous hunter- gatherer groups or admixed with them? Or was it just material and information that moved-the Ne... | {
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1104.1910 | Tails of Random Matrix Diagonal Elements: The Case of the Wishart
Inverse | [
"cs.IT",
"cond-mat.stat-mech",
"math.IT"
] | We analytically compute the large-deviation probability of a diagonal matrix element of two cases of random matrices, namely $\beta=[\vec H^\dagger\vec H]^{-1}_{11}$ and $\gamma=[\vec I_N+\rho\vec H^\dagger\vec H]^{-1}_{11}$, where $\vec H$ is a $M\times N$ complex Gaussian matrix with independent entries and $M\geq N$... | {
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1104.1924 | Rational Deployment of CSP Heuristics | [
"cs.AI"
] | Heuristics are crucial tools in decreasing search effort in varied fields of AI. In order to be effective, a heuristic must be efficient to compute, as well as provide useful information to the search algorithm. However, some well-known heuristics which do well in reducing backtracking are so heavy that the gain of dep... | {
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1104.1945 | Off-Line Handwritten Signature Retrieval using Curvelet Transforms | [
"cs.CV"
] | In this paper, a new method for offline handwritten signature retrieval is based on curvelet transform is proposed. Many applications in image processing require similarity retrieval of an image from a large collection of images. In such cases, image indexing becomes important for efficient organization and retrieval o... | {
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1104.1970 | Wet paper codes and the dual distance in steganography | [
"cs.CR",
"cs.IT",
"math.IT"
] | In 1998 Crandall introduced a method based on coding theory to secretly embed a message in a digital support such as an image. Later Fridrich et al. improved this method to minimize the distortion introduced by the embedding; a process called wet paper. However, as previously emphasized in the literature, this method c... | {
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1104.1971 | A unified framework for Schelling's model of segregation | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | Schelling's model of segregation is one of the first and most influential models in the field of social simulation. There are many variations of the model which have been proposed and simulated over the last forty years, though the present state of the literature on the subject is somewhat fragmented and lacking compre... | {
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1104.1990 | Adaptive Evolutionary Clustering | [
"cs.LG",
"stat.ML"
] | In many practical applications of clustering, the objects to be clustered evolve over time, and a clustering result is desired at each time step. In such applications, evolutionary clustering typically outperforms traditional static clustering by producing clustering results that reflect long-term trends while being ro... | {
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1104.2018 | Efficient Learning of Generalized Linear and Single Index Models with
Isotonic Regression | [
"cs.AI",
"cs.LG",
"stat.ML"
] | Generalized Linear Models (GLMs) and Single Index Models (SIMs) provide powerful generalizations of linear regression, where the target variable is assumed to be a (possibly unknown) 1-dimensional function of a linear predictor. In general, these problems entail non-convex estimation procedures, and, in practice, itera... | {
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1104.2026 | Collaboration in Social Networks | [
"physics.soc-ph",
"cs.GT",
"cs.SI"
] | The very notion of social network implies that linked individuals interact repeatedly with each other. This allows them not only to learn successful strategies and adapt to them, but also to condition their own behavior on the behavior of others, in a strategic forward looking manner. Game theory of repeated games show... | {
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1104.2034 | Materials to the Russian-Bulgarian Comparative Dictionary "EAD" | [
"cs.CL"
] | This article presents a fragment of a new comparative dictionary "A comparative dictionary of names of expansive action in Russian and Bulgarian languages". Main features of the new web-based comparative dictionary are placed, the principles of its formation are shown, primary links between the word-matches are classif... | {
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1104.2049 | Optimal Channel Training in Uplink Network MIMO Systems | [
"cs.IT",
"math.IT"
] | We consider a multi-cell frequency-selective fading uplink channel (network MIMO) from K single-antenna user terminals (UTs) to B cooperative base stations (BSs) with M antennas each. The BSs, assumed to be oblivious of the applied codebooks, forward compressed versions of their observations to a central station (CS) v... | {
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1104.2059 | Template-based matching using weight maps | [
"cs.CV"
] | Template matching is one of the most prevalent pattern recognition methods worldwide. It has found uses in most visual concept detection fields. In this work, we investigate methods for improving template matching by adjusting the weights of different regions of the template. We compare several weight maps and test the... | {
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1104.2069 | GEOMIR2K9 - A Similar Scene Finder | [
"cs.CV"
] | The main goal of the GEOMIR2K9 project is to create a software program that is able to find similar scenic images clustered by geographical location and sorted by similarity based only on their visual content. The user should be able to input a query image, based on this given query image the program should find releva... | {
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1104.2079 | Optimizing XML querying using type-based document projection | [
"cs.DB"
] | XML data projection (or pruning) is a natural optimization for main memory query engines: given a query Q over a document D, the subtrees of D that are not necessary to evaluate Q are pruned, thus producing a smaller document D'; the query Q is then executed on D', hence avoiding to allocate and process nodes that will... | {
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1104.2086 | A Universal Part-of-Speech Tagset | [
"cs.CL"
] | To facilitate future research in unsupervised induction of syntactic structure and to standardize best-practices, we propose a tagset that consists of twelve universal part-of-speech categories. In addition to the tagset, we develop a mapping from 25 different treebank tagsets to this universal set. As a result, when c... | {
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1104.2097 | PAC learnability versus VC dimension: a footnote to a basic result of
statistical learning | [
"cs.LG"
] | A fundamental result of statistical learnig theory states that a concept class is PAC learnable if and only if it is a uniform Glivenko-Cantelli class if and only if the VC dimension of the class is finite. However, the theorem is only valid under special assumptions of measurability of the class, in which case the PAC... | {
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1104.2108 | Stability of Modified-CS and LS-CS for Recursive Reconstruction of
Sparse Signal Sequences | [
"cs.IT",
"math.IT"
] | In this work, we obtain sufficient conditions for the "stability" of our recently proposed algorithms, Least Squares Compressive Sensing residual (LS-CS) and modified-CS, for recursively reconstructing sparse signal sequences from noisy measurements. By "stability" we mean that the number of misses from the current sup... | {
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1104.2110 | Deterministic Real-time Thread Scheduling | [
"cs.OS",
"cs.SY"
] | Race condition is a timing sensitive problem. A significant source of timing variation comes from nondeterministic hardware interactions such as cache misses. While data race detectors and model checkers can check races, the enormous state space of complex software makes it difficult to identify all of the races and th... | {
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1104.2112 | Optimal Asymptotic Entrainment of Phase-Reduced Oscillators | [
"nlin.CD",
"cs.SY",
"math.DS",
"math.OC"
] | We derive optimal periodic controls for entrainment of a self-driven oscillator to a desired frequency. The alternative objectives of minimizing power and maximizing frequency range of entrainment are considered. A state space representation of the oscillator is reduced to a linearized phase model, and the optimal peri... | {
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1104.2116 | Statistical Beamforming on the Grassmann Manifold for the Two-User
Broadcast Channel | [
"cs.IT",
"math.IT",
"math.OC"
] | A Rayleigh fading spatially correlated broadcast setting with M = 2 antennas at the transmitter and two-users (each with a single antenna) is considered. It is assumed that the users have perfect channel information about their links whereas the transmitter has only statistical information of each user's link (covarian... | {
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1104.2124 | Is a probabilistic modeling really useful in financial engineering? -
A-t-on vraiment besoin d'un mod\`ele probabiliste en ing\'enierie
financi\`ere ? | [
"q-fin.CP",
"cs.CE",
"q-fin.PM",
"q-fin.RM"
] | A new standpoint on financial time series, without the use of any mathematical model and of probabilistic tools, yields not only a rigorous approach of trends and volatility, but also efficient calculations which were already successfully applied in automatic control and in signal processing. It is based on a theorem d... | {
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} |
1104.2156 | Structural Analysis of Network Traffic Matrix via Relaxed Principal
Component Pursuit | [
"cs.NI",
"cs.IT",
"cs.PF",
"math.IT"
] | The network traffic matrix is widely used in network operation and management. It is therefore of crucial importance to analyze the components and the structure of the network traffic matrix, for which several mathematical approaches such as Principal Component Analysis (PCA) were proposed. In this paper, we first argu... | {
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1104.2171 | From a Modified Ambrosio-Tortorelli to a Randomized Part Hierarchy Tree | [
"cs.CV"
] | We demonstrate the possibility of coding parts, features that are higher level than boundaries, using a modified AT field after augmenting the interaction term of the AT energy with a non-local term and weakening the separation into boundary/not-boundary phases. The iteratively extracted parts using the level curves wi... | {
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1104.2175 | Extracting Parts of 2D Shapes Using Local and Global Interactions
Simultaneously | [
"cs.CV"
] | Perception research provides strong evidence in favor of part based representation of shapes in human visual system. Despite considerable differences among different theories in terms of how part boundaries are found, there is substantial agreement on that the process depends on many local and global geometric factors.... | {
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1104.2187 | A Generalized Continuous Model for Random Markets | [
"q-fin.GN",
"cs.MA",
"nlin.AO"
] | A generalized continuous economic model is proposed for random markets. In this model, agents interact by pairs and exchange their money in a random way. A parameter controls the effectiveness of the transactions between the agents. We show in a rigorous way that this type of markets reach their asymptotic equilibrium ... | {
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1104.2196 | Space and Time as a Primary Classification Criterion for Information
Retrieval in Distributed Social Networking | [
"cs.IR",
"cs.SI",
"physics.soc-ph"
] | We discuss in a compact way how the implicit relations between spatiotemporal relatedness of information items, spatiotemporal relatedness of users, social relatedness of users and semantic relatedness of information items may be exploited for an information retrieval architecture that operates along the lines of human... | {
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1104.2215 | Sparse Representation of White Gaussian Noise with Application to
L0-Norm Decoding in Noisy Compressed Sensing | [
"cs.IT",
"math.IT"
] | The achievable and converse regions for sparse representation of white Gaussian noise based on an overcomplete dictionary are derived in the limit of large systems. Furthermore, the marginal distribution of such sparse representations is also inferred. The results are obtained via the Replica method which stems from st... | {
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1104.2239 | Experimental Investigation of Forecasting Methods Based on Universal
Measures | [
"cs.IT",
"math.IT",
"physics.data-an"
] | We describe and experimentally investigate a method to construct forecasting algorithms for stationary and ergodic processes based on universal measures (or so-called universal data compressors). Using some geophysical and economical time series as examples, we show that the precision of thus obtained predictions is hi... | {
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1104.2284 | Preprocessing: A Prerequisite for Discovering Patterns in WUM Process | [
"cs.DB"
] | Web log data is usually diverse and voluminous. This data must be assembled into a consistent, integrated and comprehensive view, in order to be used for pattern discovery. Without properly cleaning, transforming and structuring the data prior to the analysis, one cannot expect to find meaningful patterns. As in most d... | {
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1104.2285 | Elimination of Specular reflection and Identification of ROI: The First
Step in Automated Detection of Cervical Cancer using Digital Colposcopy | [
"cs.CV",
"physics.med-ph"
] | Cervical Cancer is one of the most common forms of cancer in women worldwide. Most cases of cervical cancer can be prevented through screening programs aimed at detecting precancerous lesions. During Digital Colposcopy, Specular Reflections (SR) appear as bright spots heavily saturated with white light. These occur due... | {
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1104.2355 | Cooperative Spectrum Sensing for Amplify-and-Forward Cognitive Networks | [
"cs.IT",
"math.IT"
] | We develop a framework for spectrum sensing in cooperative amplify-and-forward cognitive radio networks. We consider a stochastic model where relays are assigned in cognitive radio networks to transmit the primary user's signal to a cognitive Secondary Base Station (SBS). We develop the Bayesian optimal decision rule u... | {
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1104.2364 | Epidemic spreading with immunization rate on complex networks | [
"physics.soc-ph",
"cs.SI"
] | We investigate the spread of diseases, computer viruses or information on complex networks and also immunization strategies to prevent or control the spread. When an entire population cannot be immunized and the effect of immunization is not perfect, we need the targeted immunization with immunization rate. Under such ... | {
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1104.2373 | Hybrid Deterministic-Stochastic Methods for Data Fitting | [
"cs.NA",
"cs.SY",
"math.OC",
"stat.ML"
] | Many structured data-fitting applications require the solution of an optimization problem involving a sum over a potentially large number of measurements. Incremental gradient algorithms offer inexpensive iterations by sampling a subset of the terms in the sum. These methods can make great progress initially, but often... | {
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1104.2444 | A Simplified and Improved Free-Variable Framework for Hilbert's epsilon
as an Operator of Indefinite Committed Choice | [
"cs.AI",
"math.LO"
] | Free variables occur frequently in mathematics and computer science with ad hoc and altering semantics. We present the most recent version of our free-variable framework for two-valued logics with properly improved functionality, but only two kinds of free variables left (instead of three): implicitly universally and i... | {
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1104.2541 | Kernels for Global Constraints | [
"cs.AI",
"cs.DS"
] | Bessiere et al. (AAAI'08) showed that several intractable global constraints can be efficiently propagated when certain natural problem parameters are small. In particular, the complete propagation of a global constraint is fixed-parameter tractable in k - the number of holes in domains - whenever bound consistency can... | {
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1104.2547 | C-Codes: Cyclic Lowest-Density MDS Array Codes Constructed Using
Starters for RAID 6 | [
"cs.IT",
"cs.DM",
"math.CO",
"math.IT"
] | The distance-3 cyclic lowest-density MDS array code (called the C-Code) is a good candidate for RAID 6 because of its optimal storage efficiency, optimal update complexity, optimal length, and cyclic symmetry. In this paper, the underlying connections between C-Codes (or quasi-C-Codes) and starters in group theory are ... | {
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1104.2580 | Hypothesize and Bound: A Computational Focus of Attention Mechanism for
Simultaneous N-D Segmentation, Pose Estimation and Classification Using Shape
Priors | [
"cs.CV",
"cs.CG",
"cs.GR",
"cs.LG"
] | Given the ever increasing bandwidth of the visual information available to many intelligent systems, it is becoming essential to endow them with a sense of what is worthwhile their attention and what can be safely disregarded. This article presents a general mathematical framework to efficiently allocate the available ... | {
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1104.2581 | Approximate MIMO Iterative Processing with Adjustable Complexity
Requirements | [
"cs.IT",
"math.IT"
] | Targeting always the best achievable bit error rate (BER) performance in iterative receivers operating over multiple-input multiple-output (MIMO) channels may result in significant waste of resources, especially when the achievable BER is orders of magnitude better than the target performance (e.g., under good channel ... | {
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1104.2599 | Streaming Tree Transducers | [
"cs.FL",
"cs.DB"
] | Theory of tree transducers provides a foundation for understanding expressiveness and complexity of analysis problems for specification languages for transforming hierarchically structured data such as XML documents. We introduce streaming tree transducers as an analyzable, executable, and expressive model for transfor... | {
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1104.2606 | Statistical mechanics of the international trade network | [
"q-fin.GN",
"cs.SI",
"physics.data-an",
"physics.soc-ph"
] | Analyzing real data on international trade covering the time interval 1950-2000, we show that in each year over the analyzed period the network is a typical representative of the ensemble of maximally random weighted networks, whose directed connections (bilateral trade volumes) are only characterized by the product of... | {
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1104.2644 | Idealized Dynamic Population Sizing for Uniformly Scaled Problems | [
"cs.NE"
] | This paper explores an idealized dynamic population sizing strategy for solving additive decomposable problems of uniform scale. The method is designed on top of the foundations of existing population sizing theory for this class of problems, and is carefully compared with an optimal fixed population sized genetic algo... | {
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1104.2679 | Convex inner approximations of nonconvex semialgebraic sets applied to
fixed-order controller design | [
"math.OC",
"cs.SY"
] | We describe an elementary algorithm to build convex inner approximations of nonconvex sets. Both input and output sets are basic semialgebraic sets given as lists of defining multivariate polynomials. Even though no optimality guarantees can be given (e.g. in terms of volume maximization for bounded sets), the algorith... | {
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1104.2689 | Viscosity solutions of systems of PDEs with interconnected obstacles and
Multi modes switching problems | [
"math.OC",
"cs.SY"
] | This paper deals with existence and uniqueness, in viscosity sense, of a solution for a system of m variational partial differential inequalities with inter-connected obstacles. A particular case of this system is the deterministic version of the Verification Theorem of the Markovian optimal m-states switching problem.... | {
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1104.2721 | Optimal Cell Towers Distribution by using Spatial Mining and Geographic
Information System | [
"cs.DB"
] | The appearance of wireless communication is dramatically changing our life. Mobile telecommunications emerged as a technological marvel allowing for access to personal and other services, devices, computation and communication, in any place and at any time through effortless plug and play. Setting up wireless mobile ne... | {
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1104.2745 | An Axis-Based Representation for Recognition | [
"cs.CV"
] | This paper presents a new axis-based shape representation scheme along with a matching framework to address the problem of generic shape recognition. The main idea is to define the relative spatial arrangement of local symmetry axes and their metric properties in a shape centered coordinate frame. The resulting descrip... | {
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1104.2751 | Disconnected Skeleton: Shape at its Absolute Scale | [
"cs.CV"
] | We present a new skeletal representation along with a matching framework to address the deformable shape recognition problem. The disconnectedness arises as a result of excessive regularization that we use to describe a shape at an attainably coarse scale. Our motivation is to rely on the stable properties of the shape... | {
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1104.2756 | Privacy Preserving Moving KNN Queries | [
"cs.DB"
] | We present a novel approach that protects trajectory privacy of users who access location-based services through a moving k nearest neighbor (MkNN) query. An MkNN query continuously returns the k nearest data objects for a moving user (query point). Simply updating a user's imprecise location such as a region instead o... | {
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1104.2773 | Distributed Stochastic Approximation for Constrained and Unconstrained
Optimization | [
"cs.IT",
"math.IT"
] | In this paper, we analyze the convergence of a distributed Robbins-Monro algorithm for both constrained and unconstrained optimization in multi-agent systems. The algorithm searches for local minima of a (nonconvex) objective function which is supposed to coincide with a sum of local utility functions of the agents. Th... | {
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1104.2784 | Diversity Analysis of Symbol-by-Symbol Linear Equalizers | [
"cs.IT",
"math.IT"
] | In frequency-selective channels linear receivers enjoy significantly-reduced complexity compared with maximum likelihood receivers at the cost of performance degradation which can be in the form of a loss of the inherent frequency diversity order or reduced coding gain. This paper demonstrates that the minimum mean-squ... | {
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1104.2788 | Backdoors to Tractable Answer-Set Programming | [
"cs.CC",
"cs.AI"
] | Answer Set Programming (ASP) is an increasingly popular framework for declarative programming that admits the description of problems by means of rules and constraints that form a disjunctive logic program. In particular, many AI problems such as reasoning in a nonmonotonic setting can be directly formulated in ASP. Al... | {
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1104.2824 | Pattern discovery for semi-structured web pages using bar-tree
representation | [
"cs.IR",
"cs.DS"
] | Many websites with an underlying database containing structured data provide the richest and most dense source of information relevant for topical data integration. The real data integration requires sustainable and reliable pattern discovery to enable accurate content retrieval and to recognize pattern changes from ti... | {
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1104.2825 | Foundations for Uniform Interpolation and Forgetting in Expressive
Description Logics | [
"cs.LO",
"cs.AI"
] | We study uniform interpolation and forgetting in the description logic ALC. Our main results are model-theoretic characterizations of uniform inter- polants and their existence in terms of bisimula- tions, tight complexity bounds for deciding the existence of uniform interpolants, an approach to computing interpolants ... | {
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1104.2829 | Self-organizing traffic lights at multiple-street intersections | [
"nlin.AO",
"cs.AI",
"nlin.CG"
] | Summary: Traffic light coordination is a complex problem. In this paper, we extend previous work on an abstract model of city traffic to allow for multiple street intersections. We test a self-organizing method in our model, showing that it is close to theoretical optima and superior to a traditional method of traffic ... | {
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1104.2842 | Augmenting Tractable Fragments of Abstract Argumentation | [
"cs.AI",
"cs.CC"
] | We present a new and compelling approach to the efficient solution of important computational problems that arise in the context of abstract argumentation. Our approach makes known algorithms defined for restricted fragments generally applicable, at a computational cost that scales with the distance from the fragment. ... | {
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"cs.SY": 0
} |
1104.2861 | Using Channel Output Feedback to Increase Throughput in Hybrid-ARQ | [
"cs.IT",
"math.IT"
] | Hybrid-ARQ protocols have become common in many packet transmission systems due to their incorporation in various standards. Hybrid-ARQ combines the normal automatic repeat request (ARQ) method with error correction codes to increase reliability and throughput. In this paper, we look at improving upon this performance ... | {
"Other": 0,
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1104.2930 | Cluster Forests | [
"stat.ME",
"cs.LG",
"stat.ML"
] | With inspiration from Random Forests (RF) in the context of classification, a new clustering ensemble method---Cluster Forests (CF) is proposed. Geometrically, CF randomly probes a high-dimensional data cloud to obtain "good local clusterings" and then aggregates via spectral clustering to obtain cluster assignments fo... | {
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"cs.NE": 0,
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"cs.SD": 0,
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"cs.SY": 0
} |
1104.2939 | Subexponential convergence for information aggregation on regular trees | [
"cs.MA",
"cs.IT",
"math.IT",
"math.ST",
"stat.TH"
] | We consider the decentralized binary hypothesis testing problem on trees of bounded degree and increasing depth. For a regular tree of depth t and branching factor k>=2, we assume that the leaves have access to independent and identically distributed noisy observations of the 'state of the world' s. Starting with the l... | {
"Other": 0,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1104.2944 | Global Computation in a Poorly Connected World: Fast Rumor Spreading
with No Dependence on Conductance | [
"cs.DM",
"cs.DC",
"cs.SI",
"physics.soc-ph"
] | In this paper, we study the question of how efficiently a collection of interconnected nodes can perform a global computation in the widely studied GOSSIP model of communication. In this model, nodes do not know the global topology of the network, and they may only initiate contact with a single neighbor in each round.... | {
"Other": 1,
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"cs.CE": 0,
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"cs.CR": 0,
"cs.CV": 0,
"cs.CY": 0,
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"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 1,
"cs.SY": 0
} |
1104.2982 | Multi-representation d'une ontologie : OWL, bases de donnees, syst\`emes
de types et d'objets | [
"cs.IR"
] | Due to the emergence of the semantic Web and the increasing need to formalize human knowledge, ontologie engineering is now an important activity. But is this activity very different from other ones like software engineering, for example ? In this paper, we investigate analogies between ontologies on one hand, types, o... | {
"Other": 0,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
"cs.CR": 0,
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"cs.IR": 1,
"cs.IT": 0,
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"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1104.2998 | On the exponential decay of the Euler-Bernoulli beam with boundary
energy dissipation | [
"math-ph",
"cs.SY",
"math.MP",
"math.OC"
] | We study the asymptotic behavior of the Euler-Bernoulli beam which is clamped at one end and free at the other end. We apply a boundary control with memory at the free end of the beam and prove that the "exponential decay" of the memory kernel is a necessary and sufficient condition for the exponential decay of the ene... | {
"Other": 0,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
"cs.CR": 0,
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"cs.CY": 0,
"cs.DB": 0,
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"cs.IR": 0,
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"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 1
} |
1104.3069 | Efficient Maximum Likelihood Estimation of a 2-D Complex Sinusoidal
Based on Barycentric Interpolation | [
"cs.IT",
"math.IT"
] | This paper presents an efficient method to compute the maximum likelihood (ML) estimation of the parameters of a complex 2-D sinusoidal, with the complexity order of the FFT. The method is based on an accurate barycentric formula for interpolating band-limited signals, and on the fact that the ML cost function can be v... | {
"Other": 0,
"cs.AI": 0,
"cs.CE": 0,
"cs.CL": 0,
"cs.CR": 0,
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"cs.IR": 0,
"cs.IT": 1,
"cs.LG": 0,
"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1104.3083 | Narrow scope for resolution-limit-free community detection | [
"physics.soc-ph",
"cs.SI"
] | Detecting communities in large networks has drawn much attention over the years. While modularity remains one of the more popular methods of community detection, the so-called resolution limit remains a significant drawback. To overcome this issue, it was recently suggested that instead of comparing the network to a ra... | {
"Other": 0,
"cs.AI": 0,
"cs.CE": 0,
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"cs.CR": 0,
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"cs.MA": 0,
"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 1,
"cs.SY": 0
} |
1104.3084 | I/O-Efficient Data Structures for Colored Range and Prefix Reporting | [
"cs.DS",
"cs.IR"
] | Motivated by information retrieval applications, we consider the one-dimensional colored range reporting problem in rank space. The goal is to build a static data structure for sets C_1,...,C_m \subseteq {1,...,sigma} that supports queries of the kind: Given indices a,b, report the set Union_{a <= i <= b} C_i. We stu... | {
"Other": 1,
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"cs.IR": 1,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
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