id stringlengths 9 16 | title stringlengths 4 278 | categories listlengths 1 13 | abstract stringlengths 3 4.08k | filtered_category_membership dict |
|---|---|---|---|---|
1101.4458 | Remarks on the Restricted Isometry Property in Orthogonal Matching
Pursuit algorithm | [
"cs.IT",
"math.IT"
] | This paper demonstrates theoretically that if the restricted isometry constant $\delta_K$ of the compressed sensing matrix satisfies $$ \delta_{K+1} < \frac{1}{\sqrt{K}+1}, $$ then a greedy algorithm called Orthogonal Matching Pursuit (OMP) can recover a signal with $K$ nonzero entries in $K$ iterations. In contrast, m... | {
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1101.4477 | Limited Feedback Over Temporally Correlated Channels for the Downlink of
a Femtocell Network | [
"cs.IT",
"math.IT"
] | Heterogeneous networks are a flexible deployment model that rely on low power nodes to improve the user broadband experience in a cost effective manner. Femtocells are an integral part of heterogeneous networks, whose main purpose is to improve the indoor capacity. When restricting access to home users, femtocells caus... | {
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1101.4479 | A Context-theoretic Framework for Compositionality in Distributional
Semantics | [
"cs.CL",
"cs.AI"
] | Techniques in which words are represented as vectors have proved useful in many applications in computational linguistics, however there is currently no general semantic formalism for representing meaning in terms of vectors. We present a framework for natural language semantics in which words, phrases and sentences ar... | {
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1101.4486 | High-rate Space-Time-Frequency Codes Achieving Full-Diversity with
Partial Interference Cancellation Group Decoding | [
"cs.IT",
"math.IT"
] | The partial interference cancellation (PIC) group decoding has recently been proposed to deal with the decoding complexity and code rate trade-off on the basis of space-time block code (STBC) design criterion when full diversity is achieved. It provides a framework to arrange the rate-complexity-performance tradeoff by... | {
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1101.4505 | Interplay between telecommunications and face-to-face interactions - a
study using mobile phone data | [
"physics.soc-ph",
"cs.SI"
] | In this study we analyze one year of anonymized telecommunications data for over one million customers from a large European cellphone operator, and we investigate the relationship between people's calls and their physical location. We discover that more than 90% of users who have called each other have also shared the... | {
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1101.4573 | Finding undetected protein associations in cell signaling by belief
propagation | [
"q-bio.MN",
"cond-mat.stat-mech",
"cs.AI",
"cs.CE"
] | External information propagates in the cell mainly through signaling cascades and transcriptional activation, allowing it to react to a wide spectrum of environmental changes. High throughput experiments identify numerous molecular components of such cascades that may, however, interact through unknown partners. Some o... | {
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1101.4603 | Evaluation Codes from smooth Quadric Surfaces and Twisted Segre
Varieties | [
"cs.IT",
"math.AG",
"math.IT",
"math.NT"
] | We give the parameters of any evaluation code on a smooth quadric surface. For hyperbolic quadrics the approach uses elementary results on product codes and the parameters of codes on elliptic quadrics are obtained by detecting a BCH structure of these codes and using the BCH bound. The elliptic quadric is a twist of t... | {
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1101.4617 | Applications of Stochastic Ordering to Wireless Communications | [
"cs.IT",
"math.IT"
] | Stochastic orders are binary relations defined on probability distributions which capture intuitive notions like being larger or being more variable. This paper introduces stochastic ordering of instantaneous SNRs of fading channels as a tool to compare the performance of communication systems over different channels. ... | {
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1101.4620 | Unconditionally Secure Bit Commitment with Flying Qudits | [
"quant-ph",
"cs.CR",
"cs.IT",
"math.IT"
] | In the task cryptographers call bit commitment, one party encrypts a prediction in a way that cannot be decrypted until they supply a key, but has only one valid key. Bit commitment has many applications, and has been much studied, but completely and provably secure schemes have remained elusive. Here we report a new d... | {
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1101.4681 | Close the Gaps: A Learning-while-Doing Algorithm for a Class of
Single-Product Revenue Management Problems | [
"cs.LG"
] | We consider a retailer selling a single product with limited on-hand inventory over a finite selling season. Customer demand arrives according to a Poisson process, the rate of which is influenced by a single action taken by the retailer (such as price adjustment, sales commission, advertisement intensity, etc.). The r... | {
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1101.4711 | Von Neumann Normalisation of a Quantum Random Number Generator | [
"cs.IT",
"math.IT",
"quant-ph"
] | In this paper we study von Neumann un-biasing normalisation for ideal and real quantum random number generators, operating on finite strings or infinite bit sequences. In the ideal cases one can obtain the desired un-biasing. This relies critically on the independence of the source, a notion we rigorously define for ou... | {
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1101.4724 | A Message-Passing Receiver for BICM-OFDM over Unknown Clustered-Sparse
Channels | [
"cs.IT",
"math.IT"
] | We propose a factor-graph-based approach to joint channel-estimation-and-decoding (JCED) of bit- interleaved coded orthogonal frequency division multiplexing (BICM-OFDM). In contrast to existing designs, ours is capable of exploiting not only sparsity in sampled channel taps but also clustering among the large taps, be... | {
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1101.4730 | Dynamic scaling, data-collapse and self-similarity in
Barab\'{a}si-Albert networks | [
"cond-mat.stat-mech",
"cond-mat.dis-nn",
"cs.SI",
"physics.soc-ph"
] | In this article, we show that if each node of the Barab\'{a}si-Albert (BA) network is characterized by the generalized degree $q$, i.e. the product of their degree $k$ and the square root of their respective birth time, then the distribution function $F(q,t)$ exhibits dynamic scaling $F(q,t\rightarrow \infty)\sim t^{-1... | {
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1101.4749 | Online Adaptive Decision Fusion Framework Based on Entropic Projections
onto Convex Sets with Application to Wildfire Detection in Video | [
"cs.CV",
"cs.LG"
] | In this paper, an Entropy functional based online Adaptive Decision Fusion (EADF) framework is developed for image analysis and computer vision applications. In this framework, it is assumed that the compound algorithm consists of several sub-algorithms each of which yielding its own decision as a real number centered ... | {
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1101.4752 | A Primal-Dual Convergence Analysis of Boosting | [
"cs.LG",
"math.OC"
] | Boosting combines weak learners into a predictor with low empirical risk. Its dual constructs a high entropy distribution upon which weak learners and training labels are uncorrelated. This manuscript studies this primal-dual relationship under a broad family of losses, including the exponential loss of AdaBoost and th... | {
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1101.4795 | Numerical Evaluation of Algorithmic Complexity for Short Strings: A
Glance into the Innermost Structure of Randomness | [
"cs.IT",
"cs.CC",
"math.IT"
] | We describe an alternative method (to compression) that combines several theoretical and experimental results to numerically approximate the algorithmic (Kolmogorov-Chaitin) complexity of all $\sum_{n=1}^82^n$ bit strings up to 8 bits long, and for some between 9 and 16 bits long. This is done by an exhaustive executio... | {
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1101.4815 | Source Optimization in MISO Relaying with Channel Mean Feedback: A
Stochastic Ordering Approach | [
"cs.IT",
"math.IT"
] | This paper investigates the optimum source transmission strategy to maximize the capacity of a multiple-input single-output (MISO) amplify-and-forward relay channel, assuming source-relay channel mean feedback at the source. The challenge here is that relaying introduces a nonconvex structure in the objective function,... | {
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1101.4849 | A Maximum Entropy solution of the Covariance Extension Problem for
Reciprocal Processes | [
"math.OC",
"cs.IT",
"cs.SY",
"math.IT",
"math.PR"
] | Stationary reciprocal processes defined on a finite interval of the integer line can be seen as a special class of Markov random fields restricted to one dimension. Non stationary reciprocal processes have been extensively studied in the past especially by Jamison, Krener, Levy and co-workers. The specialization of the... | {
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1101.4918 | Using Feature Weights to Improve Performance of Neural Networks | [
"cs.LG",
"cs.AI",
"cs.CV"
] | Different features have different relevance to a particular learning problem. Some features are less relevant; while some very important. Instead of selecting the most relevant features using feature selection, an algorithm can be given this knowledge of feature importance based on expert opinion or prior learning. Lea... | {
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1101.4924 | A Generalized Method for Integrating Rule-based Knowledge into Inductive
Methods Through Virtual Sample Creation | [
"cs.LG",
"cs.AI",
"cs.CV"
] | Hybrid learning methods use theoretical knowledge of a domain and a set of classified examples to develop a method for classification. Methods that use domain knowledge have been shown to perform better than inductive learners. However, there is no general method to include domain knowledge into all inductive learning ... | {
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1101.4957 | Aircraft Proximity Maps Based on Data-Driven Flow Modeling | [
"cs.SY",
"physics.data-an"
] | With the forecast increase in air traffic demand over the next decades, it is imperative to develop tools to provide traffic flow managers with the information required to support decision making. In particular, decision-support tools for traffic flow management should aid in limiting controller workload and complexity... | {
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1101.4989 | Opportunistic Buffered Decode-Wait-and-Forward (OBDWF) Protocol for
Mobile Wireless Relay Networks | [
"cs.IT",
"math.IT"
] | In this paper, we propose an opportunistic buffered decode-wait-and-forward (OBDWF) protocol to exploit both relay buffering and relay mobility to enhance the system throughput and the end-to-end packet delay under bursty arrivals. We consider a point-to-point communication link assisted by K mobile relays. We illustra... | {
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1101.4999 | List decoding of a class of affine variety codes | [
"cs.IT",
"math.IT"
] | Consider a polynomial $F$ in $m$ variables and a finite point ensemble $S=S_1 \times ... \times S_m$. When given the leading monomial of $F$ with respect to a lexicographic ordering we derive improved information on the possible number of zeros of $F$ of multiplicity at least $r$ from $S$. We then use this information ... | {
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1101.5025 | Order Statistics Based List Decoding Techniques for Linear Binary Block
Codes | [
"cs.IT",
"math.IT"
] | The order statistics based list decoding techniques for linear binary block codes of small to medium block length are investigated. The construction of the list of the test error patterns is considered. The original order statistics decoding is generalized by assuming segmentation of the most reliable independent posit... | {
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1101.5039 | A Novel Template-Based Learning Model | [
"cs.LG"
] | This article presents a model which is capable of learning and abstracting new concepts based on comparing observations and finding the resemblance between the observations. In the model, the new observations are compared with the templates which have been derived from the previous experiences. In the first stage, the ... | {
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1101.5048 | Reinforced communication and social navigation: remember your friends
and remember yourself | [
"physics.soc-ph",
"cs.SI"
] | In social systems, people communicate with each other and form groups based on their interests. The pattern of interactions, the network, and the ideas that flow on the network naturally evolve together. Researchers use simple models to capture the feedback between changing network patterns and ideas on the network, bu... | {
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1101.5058 | Impact of link deletions on public cooperation in scale-free networks | [
"physics.soc-ph",
"cs.SI",
"q-bio.PE"
] | Working together in groups may be beneficial if compared to isolated efforts. Yet this is true only if all group members contribute to the success. If not, group efforts may act detrimentally on the fitness of their members. Here we study the evolution of cooperation in public goods games on scale-free networks that ar... | {
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1101.5076 | Geometric representations for minimalist grammars | [
"cs.CL"
] | We reformulate minimalist grammars as partial functions on term algebras for strings and trees. Using filler/role bindings and tensor product representations, we construct homomorphisms for these data structures into geometric vector spaces. We prove that the structure-building functions as well as simple processors fo... | {
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1101.5079 | Compressive Sensing Using the Entropy Functional | [
"cs.IT",
"math.IT"
] | In most compressive sensing problems l1 norm is used during the signal reconstruction process. In this article the use of entropy functional is proposed to approximate the l1 norm. A modified version of the entropy functional is continuous, differentiable and convex. Therefore, it is possible to construct globally conv... | {
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1101.5088 | On Sharing Viral Video over an Ad Hoc Wireless Network | [
"cs.SI"
] | We consider the problem of broadcasting a viral video (a large file) over an ad hoc wireless network (e.g., students in a campus). Many smartphones are GPS enabled, and equipped with peer-to-peer (ad hoc) transmission mode, allowing them to wirelessly exchange files over short distances rather than use the carrier's WA... | {
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1101.5097 | Infinite Multiple Membership Relational Modeling for Complex Networks | [
"cs.SI",
"cs.LG",
"physics.soc-ph"
] | Learning latent structure in complex networks has become an important problem fueled by many types of networked data originating from practically all fields of science. In this paper, we propose a new non-parametric Bayesian multiple-membership latent feature model for networks. Contrary to existing multiple-membership... | {
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1101.5108 | Causal Dependence Tree Approximations of Joint Distributions for
Multiple Random Processes | [
"cs.IT",
"math.IT"
] | We investigate approximating joint distributions of random processes with causal dependence tree distributions. Such distributions are particularly useful in providing parsimonious representation when there exists causal dynamics among processes. By extending the results by Chow and Liu on dependence tree approximation... | {
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1101.5120 | Temporal patterns of happiness and information in a global social
network: Hedonometrics and Twitter | [
"physics.soc-ph",
"cs.SI"
] | Individual happiness is a fundamental societal metric. Normally measured through self-report, happiness has often been indirectly characterized and overshadowed by more readily quantifiable economic indicators such as gross domestic product. Here, we examine expressions made on the online, global microblog and social n... | {
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1101.5130 | Analytical Evaluation of Fractional Frequency Reuse for OFDMA Cellular
Networks | [
"cs.IT",
"cs.NI",
"math.IT",
"math.PR"
] | Fractional frequency reuse (FFR) is an interference management technique well-suited to OFDMA-based cellular networks wherein the cells are partitioned into spatial regions with different frequency reuse factors. To date, FFR techniques have been typically been evaluated through system-level simulations using a hexagon... | {
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1101.5141 | A Complex Networks Approach for Data Clustering | [
"physics.data-an",
"cs.LG",
"cs.SI",
"physics.soc-ph"
] | Many methods have been developed for data clustering, such as k-means, expectation maximization and algorithms based on graph theory. In this latter case, graphs are generally constructed by taking into account the Euclidian distance as a similarity measure, and partitioned using spectral methods. However, these method... | {
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1101.5151 | Simulation of Self-Assembly in the Abstract Tile Assembly Model with ISU
TAS | [
"cs.MS",
"cs.CE"
] | Since its introduction by Erik Winfree in 1998, the abstract Tile Assembly Model (aTAM) has inspired a wealth of research. As an abstract model for tile based self-assembly, it has proven to be remarkably powerful and expressive in terms of the structures which can self-assemble within it. As research has progressed in... | {
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1101.5207 | Hybrid Digital-Analog Codes for Source-Channel Broadcast of Gaussian
Sources over Gaussian Channels | [
"cs.IT",
"math.IT"
] | The problem of broadcasting a parallel Gaussian source over an additive white Gaussian noise broadcast channel under the mean-squared error distortion criterion is studied. A hybrid digital-analog coding strategy which combines source coding with side information, channel coding with side information, layered source co... | {
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1101.5257 | Cooperative Regenerating Codes for Distributed Storage Systems | [
"cs.IT",
"cs.DC",
"math.IT"
] | When there are multiple node failures in a distributed storage system, regenerating the failed storage nodes individually in a one-by-one manner is suboptimal as far as repair-bandwidth minimization is concerned. If data exchange among the newcomers is enabled, we can get a better tradeoff between repair bandwidth and ... | {
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1101.5308 | Parsimonious Flooding in Geometric Random-Walks | [
"cs.SI",
"cs.DM"
] | We study the information spreading yielded by the \emph{(Parsimonious) $1$-Flooding Protocol} in geometric Mobile Ad-Hoc Networks. We consider $n$ agents on a convex plane region of diameter $D$ performing independent random walks with move radius $\rho$. At any time step, every active agent $v$ informs every non-infor... | {
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1101.5317 | A Novel Unified Expression for the Capacity and Bit Error Probability of
Wireless Communication Systems over Generalized Fading Channels | [
"cs.IT",
"cs.PF",
"math.IT"
] | Analysis of the average binary error probabilities (ABEP) and average capacity (AC) of wireless communications systems over generalized fading channels have been considered separately in the past. This paper introduces a novel moment generating function (MGF)-based \emph{unified expression} for the ABEP and AC of singl... | {
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1101.5320 | A Panorama on Multiscale Geometric Representations, Intertwining
Spatial, Directional and Frequency Selectivity | [
"cs.CV"
] | The richness of natural images makes the quest for optimal representations in image processing and computer vision challenging. The latter observation has not prevented the design of image representations, which trade off between efficiency and complexity, while achieving accurate rendering of smooth regions as well as... | {
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1101.5322 | Defecting or not defecting: how to "read" human behavior during
cooperative games by EEG measurements | [
"physics.soc-ph",
"cs.SI",
"q-bio.NC"
] | Understanding the neural mechanisms responsible for human social interactions is difficult, since the brain activities of two or more individuals have to be examined simultaneously and correlated with the observed social patterns. We introduce the concept of hyper-brain network, a connectivity pattern representing at o... | {
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} |
1101.5334 | SmartInt: Using Mined Attribute Dependencies to Integrate Fragmented Web
Databases | [
"cs.DB",
"cs.IR"
] | Many web databases can be seen as providing partial and overlapping information about entities in the world. To answer queries effectively, we need to integrate the information about the individual entities that are fragmented over multiple sources. At first blush this is just the inverse of traditional database normal... | {
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1101.5336 | On the existence of a (2,3)-spread in V(7,2) | [
"math.CO",
"cs.IT",
"math.IT"
] | An $(s,t)$-spread in a finite vector space $V=V(n,q)$ is a collection $\mathcal F$ of $t$-dimensional subspaces of $V$ with the property that every $s$-dimensional subspace of $V$ is contained in exactly one member of $\mathcal F$. It is remarkable that no $(s,t)$-spreads has been found yet, except in the case $s=1$. I... | {
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1101.5379 | How Many Nodes are Effectively Accessed in Complex Networks? | [
"physics.soc-ph",
"cond-mat.stat-mech",
"cs.SI"
] | The measurement called accessibility has been proposed as a means to quantify the efficiency of the communication between nodes in complex networks. This article reports important results regarding the properties of the accessibility, including its relationship with the average minimal time to visit all nodes reachable... | {
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1101.5428 | The Computing of Digital Ecosystems | [
"cs.DC",
"cs.MA",
"cs.NE"
] | A primary motivation for our research in digital ecosystems is the desire to exploit the self-organising properties of biological ecosystems. Ecosystems are thought to be robust, scalable architectures that can automatically solve complex, dynamic problems. However, the computing technologies that contribute to these p... | {
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1101.5460 | A Human-Centric Approach to Group-Based Context-Awareness | [
"cs.AI",
"cs.HC"
] | The emerging need for qualitative approaches in context-aware information processing calls for proper modeling of context information and efficient handling of its inherent uncertainty resulted from human interpretation and usage. Many of the current approaches to context-awareness either lack a solid theoretical basis... | {
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1101.5463 | Walking on a Graph with a Magnifying Glass: Stratified Sampling via
Weighted Random Walks | [
"cs.SI",
"cs.NI",
"physics.soc-ph",
"stat.ME"
] | Our objective is to sample the node set of a large unknown graph via crawling, to accurately estimate a given metric of interest. We design a random walk on an appropriately defined weighted graph that achieves high efficiency by preferentially crawling those nodes and edges that convey greater information regarding th... | {
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1101.5494 | Developing a New Approach for Arabic Morphological Analysis and
Generation | [
"cs.CL"
] | Arabic morphological analysis is one of the essential stages in Arabic Natural Language Processing. In this paper we present an approach for Arabic morphological analysis. This approach is based on Arabic morphological automaton (AMAUT). The proposed technique uses a morphological database realized using XMODEL languag... | {
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1101.5591 | Direct, physically-motivated derivation of the contagion condition for
spreading processes on generalized random networks | [
"cond-mat.dis-nn",
"cs.SI",
"physics.soc-ph"
] | For a broad range single-seed contagion processes acting on generalized random networks, we derive a unifying analytic expression for the possibility of global spreading events in a straightforward, physically intuitive fashion. Our reasoning lays bare a direct mechanical understanding of an archetypal spreading phenom... | {
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1101.5632 | Active Markov Information-Theoretic Path Planning for Robotic
Environmental Sensing | [
"cs.LG",
"cs.AI",
"cs.MA",
"cs.RO"
] | Recent research in multi-robot exploration and mapping has focused on sampling environmental fields, which are typically modeled using the Gaussian process (GP). Existing information-theoretic exploration strategies for learning GP-based environmental field maps adopt the non-Markovian problem structure and consequentl... | {
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1101.5668 | Analysis of Web Logs and Web User in Web Mining | [
"cs.DB"
] | Log files contain information about User Name, IP Address, Time Stamp, Access Request, number of Bytes Transferred, Result Status, URL that Referred and User Agent. The log files are maintained by the web servers. By analysing these log files gives a neat idea about the user. This paper gives a detailed discussion abou... | {
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1101.5672 | On the Local Correctness of L^1 Minimization for Dictionary Learning | [
"cs.IT",
"cs.LG",
"math.IT"
] | The idea that many important classes of signals can be well-represented by linear combinations of a small set of atoms selected from a given dictionary has had dramatic impact on the theory and practice of signal processing. For practical problems in which an appropriate sparsifying dictionary is not known ahead of tim... | {
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1101.5687 | A correspondence-less approach to matching of deformable shapes | [
"cs.CV",
"cs.CG"
] | Finding a match between partially available deformable shapes is a challenging problem with numerous applications. The problem is usually approached by computing local descriptors on a pair of shapes and then establishing a point-wise correspondence between the two. In this paper, we introduce an alternative correspond... | {
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1101.5716 | Zero-Delay Joint Source-Channel Coding for a Bivariate Gaussian on a
Gaussian MAC | [
"cs.IT",
"math.IT"
] | In this paper, delay-free, low complexity, joint source-channel coding (JSCC) for transmission of two correlated Gaussian memoryless sources over a Gaussian Multiple Access Channel (GMAC) is considered. The main contributions of the paper are two distributed JSCC schemes: one discrete scheme based on nested scalar quan... | {
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1101.5731 | Minimizing Hidden-Node Network Interference by Optimizing SISO and MIMO
Spectral Efficiency | [
"cs.IT",
"math.IT"
] | In this paper, the optimal spectral efficiency (data rate divided by the message bandwidth) that minimizes the probability of causing disruptive interference for ad hoc wireless networks or cognitive radios is investigated. Two basic problem constraints are considered: a given message size, or fixed data rate. Implicit... | {
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1101.5755 | 2D Sparse Signal Recovery via 2D Orthogonal Matching Pursuit | [
"cs.IT",
"cs.MM",
"math.IT"
] | Recovery algorithms play a key role in compressive sampling (CS). Most of current CS recovery algorithms are originally designed for one-dimensional (1D) signal, while many practical signals are two-dimensional (2D). By utilizing 2D separable sampling, 2D signal recovery problem can be converted into 1D signal recovery... | {
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1101.5757 | Polarized Montagovian Semantics for the Lambek-Grishin calculus | [
"cs.CL"
] | Grishin proposed enriching the Lambek calculus with multiplicative disjunction (par) and coresiduals. Applications to linguistics were discussed by Moortgat, who spoke of the Lambek-Grishin calculus (LG). In this paper, we adapt Girard's polarity-sensitive double negation embedding for classical logic to extract a comp... | {
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1101.5763 | A New Semantic Web Approach for Constructing, Searching and Modifying
Ontology Dynamically | [
"cs.IR"
] | Semantic web is the next generation web, which concerns the meaning of web documents It has the immense power to pull out the most relevant information from the web pages, which is also meaningful to any user, using software agents. In today's world, agent communication is not possible if concerned ontology is changed ... | {
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1101.5766 | Geometric Models with Co-occurrence Groups | [
"cs.CV",
"cs.IT",
"math.IT"
] | A geometric model of sparse signal representations is introduced for classes of signals. It is computed by optimizing co-occurrence groups with a maximum likelihood estimate calculated with a Bernoulli mixture model. Applications to face image compression and MNIST digit classification illustrate the applicability of t... | {
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1101.5785 | Statistical Compressed Sensing of Gaussian Mixture Models | [
"cs.CV",
"cs.LG"
] | A novel framework of compressed sensing, namely statistical compressed sensing (SCS), that aims at efficiently sampling a collection of signals that follow a statistical distribution, and achieving accurate reconstruction on average, is introduced. SCS based on Gaussian models is investigated in depth. For signals that... | {
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1101.5805 | The VC-Dimension of Queries and Selectivity Estimation Through Sampling | [
"cs.DB",
"cs.DS",
"cs.LG"
] | We develop a novel method, based on the statistical concept of the Vapnik-Chervonenkis dimension, to evaluate the selectivity (output cardinality) of SQL queries - a crucial step in optimizing the execution of large scale database and data-mining operations. The major theoretical contribution of this work, which is of ... | {
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1101.5809 | The Degrees of Freedom Region and Interference Alignment for the MIMO
Interference Channel with Delayed CSI | [
"cs.IT",
"math.IT"
] | The degrees of freedom (DoF) region of the 2-user multiple-antenna or MIMO (multiple-input, multiple-output) interference channel (IC) is studied under fast fading and the assumption of {\em delayed} channel state information (CSI) wherein all terminals know all (or certain) channel matrices perfectly, but with a delay... | {
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1101.5858 | Simultaneous Code/Error-Trellis Reduction for Convolutional Codes Using
Shifted Code/Error-Subsequences | [
"cs.IT",
"math.IT"
] | In this paper, we show that the code-trellis and the error-trellis for a convolutional code can be reduced simultaneously, if reduction is possible. Assume that the error-trellis can be reduced using shifted error-subsequences. In this case, if the identical shifts occur in the subsequences of each code path, then the ... | {
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1101.5888 | Predicted and Verified Deviations from Zipf's law in Ecology of
Competing Products | [
"physics.soc-ph",
"cs.SI"
] | Zipf's power-law distribution is a generic empirical statistical regularity found in many complex systems. However, rather than universality with a single power-law exponent (equal to 1 for Zipf's law), there are many reported deviations that remain unexplained. A recently developed theory finds that the interplay betw... | {
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1101.5913 | Path lengths, correlations, and centrality in temporal networks | [
"physics.soc-ph",
"cond-mat.dis-nn",
"cs.SI",
"physics.data-an"
] | In temporal networks, where nodes interact via sequences of temporary events, information or resources can only flow through paths that follow the time-ordering of events. Such temporal paths play a crucial role in dynamic processes. However, since networks have so far been usually considered static or quasi-static, th... | {
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} |
1101.5915 | Dynamic Monopolies in Colored Tori | [
"cs.SI",
"cs.DC",
"cs.DS",
"physics.soc-ph"
] | The {\em information diffusion} has been modeled as the spread of an information within a group through a process of social influence, where the diffusion is driven by the so called {\em influential network}. Such a process, which has been intensively studied under the name of {\em viral marketing}, has the goal to sel... | {
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1101.5938 | Dialog interface for dynamic data models | [
"cs.SE",
"cs.DB"
] | In this paper, the new information system development methodology will be proposed. This methodology will enable the whole data model to be built and adjusted at the run time, without rebuilding the application. This will make the user much more powerful and independent on the manufacturer of the system. It will also c... | {
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1101.5966 | On the Analysis of Weighted Nonbinary Repeat Multiple-Accumulate Codes | [
"cs.IT",
"math.IT"
] | In this paper, we consider weighted nonbinary repeat multiple-accumulate (WNRMA) code ensembles obtained from the serial concatenation of a nonbinary rate-1/n repeat code and the cascade of L>= 1 accumulators, where each encoder is followed by a nonbinary random weighter. The WNRMA codes are assumed to be iteratively d... | {
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1101.5972 | Hidden Tree Structure is a Key to the Emergence of Scaling in the World
Wide Web | [
"cs.SI",
"physics.soc-ph"
] | Preferential attachment is the most popular explanation for the emergence of scaling behavior in the World Wide Web, but this explanation has been challenged by the global information hypothesis, the existence of linear preference and the emergence of new big internet companies in the real world. We notice that most we... | {
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1101.5984 | Optimality of Binning for Distributed Hypothesis Testing | [
"cs.IT",
"math.IT"
] | We study a hypothesis testing problem in which data is compressed distributively and sent to a detector that seeks to decide between two possible distributions for the data. The aim is to characterize all achievable encoding rates and exponents of the type 2 error probability when the type 1 error probability is at mos... | {
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1101.5985 | Multi-Edge type Unequal Error Protection LDPC codes | [
"cs.IT",
"math.IT"
] | Irregular low-density parity check (LDPC) codes are particularly well-suited for transmission schemes that require unequal error protection (UEP) of the transmitted data due to the different connection degrees of its variable nodes. However, this UEP capability is strongly dependent on the connection profile among the ... | {
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1101.5997 | New Model for Multi-Objective Evolutionary Algorithms | [
"cs.NE"
] | Multi-Objective Evolutionary Algorithms (MOEAs) have been proved efficient to deal with Multi-objective Optimization Problems (MOPs). Until now tens of MOEAs have been proposed. The unified mode would provide a more systematic approach to build new MOEAs. Here a new model is proposed which includes two sub-models based... | {
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1101.6001 | Boolean network robotics: a proof of concept | [
"cs.AI",
"cs.NE",
"cs.RO"
] | Dynamical systems theory and complexity science provide powerful tools for analysing artificial agents and robots. Furthermore, they have been recently proposed also as a source of design principles and guidelines. Boolean networks are a prominent example of complex dynamical systems and they have been shown to effecti... | {
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1101.6009 | Solving the Satisfiability Problem Through Boolean Networks | [
"cs.AI",
"cs.NE",
"nlin.CG"
] | In this paper we present a new approach to solve the satisfiability problem (SAT), based on boolean networks (BN). We define a mapping between a SAT instance and a BN, and we solve SAT problem by simulating the BN dynamics. We prove that BN fixed points correspond to the SAT solutions. The mapping presented allows to d... | {
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1101.6018 | Boolean Networks Design by Genetic Algorithms | [
"cs.NE",
"nlin.AO"
] | We present and discuss the results of an experimental analysis in the design of Boolean networks by means of genetic algorithms. A population of networks is evolved with the aim of finding a network such that the attractor it reaches is of required length $l$. In general, any target can be defined, provided that it is ... | {
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1101.6022 | Tailored graph ensembles as proxies or null models for real networks II:
results on directed graphs | [
"q-bio.QM",
"cond-mat.dis-nn",
"cs.SI",
"physics.soc-ph"
] | We generate new mathematical tools with which to quantify the macroscopic topological structure of large directed networks. This is achieved via a statistical mechanical analysis of constrained maximum entropy ensembles of directed random graphs with prescribed joint distributions for in- and outdegrees and prescribed ... | {
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1101.6030 | Power Allocation in Team Jamming Games in Wireless Ad Hoc Networks | [
"cs.GT",
"cs.CR",
"cs.IT",
"cs.SY",
"math.IT",
"math.OC"
] | In this work, we study the problem of power allocation in teams. Each team consists of two agents who try to split their available power between the tasks of communication and jamming the nodes of the other team. The agents have constraints on their total energy and instantaneous power usage. The cost function is the d... | {
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} |
1101.6033 | Some More Functions That Are Not APN Infinitely Often. The Case of
Kasami exponents | [
"cs.IT",
"math.IT",
"math.NT"
] | We prove a necessary condition for some polynomials of Kasami degree to be APN over F_{q^n} for large n. | {
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1101.6052 | Stochastic Homogenization for Some Nonlinear Integro-Differential
Equations | [
"math.AP",
"cs.SY",
"math.OC",
"math.PR"
] | In this note we extend to the random, stationary ergodic setting previous results of periodic homogenization for a particular family of nonlinear nonlocal "elliptic" equations with oscillatory coefficients. Such equations include, but are not limited to Bellman equations and the Isaacs equations for the control and dif... | {
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1102.0026 | Spatially-Aware Comparison and Consensus for Clusterings | [
"cs.LG",
"cs.CG",
"cs.DB"
] | This paper proposes a new distance metric between clusterings that incorporates information about the spatial distribution of points and clusters. Our approach builds on the idea of a Hilbert space-based representation of clusters as a combination of the representations of their constituent points. We use this represen... | {
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1102.0033 | Control of Multi-Agent Formations with Only Shape Constraints | [
"cs.SY"
] | This paper considers a novel problem of how to choose an appropriate geometry for a group of agents with only shape constraints but with a flexible scale. Instead of assigning the formation system with a specific geometry, here the only requirement on the desired geometry is a shape without any location, rotation and, ... | {
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1102.0040 | On the Zero-Error Capacity Threshold for Deletion Channels | [
"cs.IT",
"math.IT"
] | We consider the zero-error capacity of deletion channels. Specifically, we consider the setting where we choose a codebook ${\cal C}$ consisting of strings of $n$ bits, and our model of the channel corresponds to an adversary who may delete up to $pn$ of these bits for a constant $p$. Our goal is to decode correctly wi... | {
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1102.0043 | The Gaussian Interference Relay Channel: Improved Achievable Rates and
Sum Rate Upperbounds Using a Potent Relay | [
"cs.IT",
"math.IT"
] | We consider the Gaussian interference channel with an intermediate relay as a main building block for cooperative interference networks. On the achievability side, we consider compress-and-forward based strategies. Specifically, a generalized compress-and-forward strategy, where the destinations jointly decode the comp... | {
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1102.0048 | Smart depth of field optimization applied to a robotised view camera | [
"math.OC",
"cs.CV",
"cs.RO"
] | The great flexibility of a view camera allows to take high quality photographs that would not be possible any other way. But making a given object into focus is a long and tedious task, although the underlying laws are well known. This paper presents the result of a project which has lead to the design of a computer co... | {
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1102.0059 | Statistical methods for tissue array images - algorithmic scoring and
co-training | [
"stat.ME",
"cs.CE",
"cs.CV",
"cs.LG",
"q-bio.QM"
] | Recent advances in tissue microarray technology have allowed immunohistochemistry to become a powerful medium-to-high throughput analysis tool, particularly for the validation of diagnostic and prognostic biomarkers. However, as study size grows, the manual evaluation of these assays becomes a prohibitive limitation; i... | {
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1102.0079 | Information-theoretic measures associated with rough set approximations | [
"cs.AI"
] | Although some information-theoretic measures of uncertainty or granularity have been proposed in rough set theory, these measures are only dependent on the underlying partition and the cardinality of the universe, independent of the lower and upper approximations. It seems somewhat unreasonable since the basic idea of ... | {
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1102.0099 | Automatic Network Fingerprinting through Single-Node Motifs | [
"physics.soc-ph",
"cs.SI",
"q-bio.QM"
] | Complex networks have been characterised by their specific connectivity patterns (network motifs), but their building blocks can also be identified and described by node-motifs---a combination of local network features. One technique to identify single node-motifs has been presented by Costa et al. (L. D. F. Costa, F. ... | {
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1102.0115 | Business Intelligence for Small and Middle-Sized Entreprises | [
"cs.DB"
] | Data warehouses are the core of decision support sys- tems, which nowadays are used by all kind of enter- prises in the entire world. Although many studies have been conducted on the need of decision support systems (DSSs) for small businesses, most of them adopt ex- isting solutions and approaches, which are appropria... | {
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1102.0160 | Optimal Band Allocation for Cognitive Cellular Networks | [
"cs.IT",
"math.IT"
] | FCC new regulation for cognitive use of the TV white space spectrum provides a new means for improving traditional cellular network performance. But it also introduces a number of technical challenges. This letter studies one of the challenges, that is, given the significant differences in the propagation property and ... | {
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} |
1102.0183 | High-Performance Neural Networks for Visual Object Classification | [
"cs.AI",
"cs.NE"
] | We present a fast, fully parameterizable GPU implementation of Convolutional Neural Network variants. Our feature extractors are neither carefully designed nor pre-wired, but rather learned in a supervised way. Our deep hierarchical architectures achieve the best published results on benchmarks for object classificatio... | {
"Other": 0,
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} |
1102.0204 | Repairing Multiple Failures with Coordinated and Adaptive Regenerating
Codes | [
"cs.IT",
"cs.DC",
"math.IT"
] | Erasure correcting codes are widely used to ensure data persistence in distributed storage systems. This paper addresses the simultaneous repair of multiple failures in such codes. We go beyond existing work (i.e., regenerating codes by Dimakis et al.) by describing (i) coordinated regenerating codes (also known as coo... | {
"Other": 1,
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} |
1102.0230 | Speeding up SAT solver by exploring CNF symmetries : Revisited | [
"math.CO",
"cs.AI"
] | Boolean Satisfiability solvers have gone through dramatic improvements in their performances and scalability over the last few years by considering symmetries. It has been shown that by using graph symmetries and generating symmetry breaking predicates (SBPs) it is possible to break symmetries in Conjunctive Normal For... | {
"Other": 0,
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} |
1102.0250 | Information-Theoretic Viewpoints on Optimal Causal Coding-Decoding
Problems | [
"cs.IT",
"math.IT"
] | In this paper we consider an interacting two-agent sequential decision-making problem consisting of a Markov source process, a causal encoder with feedback, and a causal decoder. Motivated by a desire to foster links between control and information theory, we augment the standard formulation by considering general alph... | {
"Other": 0,
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"cs.SY": 0
} |
1102.0257 | Emergence through Selection: The Evolution of a Scientific Challenge | [
"cs.SI",
"cs.AI",
"math.DS",
"physics.soc-ph"
] | One of the most interesting scientific challenges nowadays deals with the analysis and the understanding of complex networks' dynamics and how their processes lead to emergence according to the interactions among their components. In this paper we approach the definition of new methodologies for the visualization and t... | {
"Other": 0,
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"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 1,
"cs.SY": 0
} |
1102.0267 | The Capacity Region of the MIMO Interference Channel and its Reciprocity
to Within a Constant Gap | [
"cs.IT",
"math.IT"
] | The capacity region of the 2-user multi-input multi-output (MIMO) Gaussian interference channel (IC) is characterized to within a constant gap that is independent of the channel matrices for the general case of the MIMO IC with an arbitrary number of antennas at each node. An achievable rate region and an outer bound t... | {
"Other": 0,
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"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1102.0309 | `Lassoing' a phylogenetic tree I: Basic properties, shellings, and
covers | [
"q-bio.PE",
"cs.CE",
"cs.DS"
] | A classical result, fundamental to evolutionary biology, states that an edge-weighted tree $T$ with leaf set $X$, positive edge weights, and no vertices of degree 2 can be uniquely reconstructed from the set of leaf-to-leaf distances between any two elements of $X$. In biology, $X$ corresponds to a set of taxa (e.g. ex... | {
"Other": 1,
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"cs.NE": 0,
"cs.RO": 0,
"cs.SD": 0,
"cs.SI": 0,
"cs.SY": 0
} |
1102.0316 | Partition Functions of Normal Factor Graphs | [
"cs.IT",
"math.IT"
] | One of the most common types of functions in mathematics, physics, and engineering is a sum of products, sometimes called a partition function. After "normalization," a sum of products has a natural graphical representation, called a normal factor graph (NFG), in which vertices represent factors, edges represent intern... | {
"Other": 0,
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"cs.SI": 0,
"cs.SY": 0
} |
1102.0365 | Limit Theorems in Hidden Markov Models | [
"cs.IT",
"math.IT"
] | In this paper, under mild assumptions, we derive a law of large numbers, a central limit theorem with an error estimate, an almost sure invariance principle and a variant of Chernoff bound in finite-state hidden Markov models. These limit theorems are of interest in certain ares in statistics and information theory. Pa... | {
"Other": 0,
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"cs.SD": 0,
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"cs.SY": 0
} |
1102.0371 | Synthese des Controleurs Optimaux pour les Systemes a Evenements
Discrets | [
"cs.FL",
"cs.SY"
] | In this paper, we introduce the problem of synthesizing optimal controllers for discrete event systems and we propose a procedure for solving this problem, where the method and specifications are represented by finite state automata and with increasing complexity. We will subscribe to the synthetic methodology by the c... | {
"Other": 1,
"cs.AI": 0,
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"cs.SI": 0,
"cs.SY": 1
} |
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