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29th Pacific Asia Conference on Language, Information and Computation, PACLIC 2015

作者： HaCohen-Kerner, Yaakov Dilmon, Rakefet Friedlich, Shimon Cohen, Daniel Nissim Dept. of Computer Science Jerusalem College of Technology 21 Havaad Haleumi St. P.O.B. 16031 Jerusalem9116001 Israel Dept. of Hebrew and Semitic Languages Bar-Ilan University Ramat-Gan5290002 Israel

This paper analyzes what linguistic features differentiate true and false stories written in Hebrew. To do so, we have defined four feature sets containing 145 features: POS-Tags, quantitative, repetition, and special expressions. The examined corpus contains stories that were composed by 48 native Hebrew speakers who were asked to tell both false and true stories. Classification experiments on all possible combinations of these four feature sets using five supervised machine learning methods have been applied. The Part of Speech (POS) set was superior to all others and has been found as a key component. The best accuracy result (89.6%) has been achieved by a combination of sixteen POS-Tags and one quantitative feature.

关键词： Classification (of information)

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IMAGE SUPER-RESOLUTION FROM COMPRESSED SENSING OBSERVATIONS

IMAGE SUPER-RESOLUTION FROM COMPRESSED SENSING OBSERVATIONS

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IEEE International Conference on Image Processing

作者： Wael Saafin Miguel Vega Rafael Molina Aggelos K. Katsaggelos Dept. of Computer Science and Artificial Intellegence University of Granada Dept. of Languages and Information Systems University of Granada Dept. of Electrical Engineering and Computer Science Northwestern University

ISBN: (纸本)9781479983407

In this work we propose a novel framework to obtain High Resolution (HR) images from Compressed Sensing (CS) imaging systems capturing multiple Low Resolution (LR) images of the same scene. The proposed CS Super Resolution (SR) approach combines existing CS reconstruction algorithms with an LR to HR approach based on the use of a Super Gaussian (SG) regularization term. The reconstruction is formulated as a constrained optimization problem which is solved using the Alternate Direction Methods of Multipliers (ADMM). The image estimation subproblem is solved using Majorization-Minimization (MM) while the CS reconstruction becomes an l_1-minimization subject to a quadratic constraint. The performed experiments show that the proposed method compares favorably to classical SR methods at compression ratio 1, obtaining excellent SR reconstructions at ratios below one.

关键词： Super resolution Compressed sensing Image sampling Image reconstruction Image enhancement super-resolution image samples Compressed sensing image enhancement image reconstruction images CONTAINMENT SPRAY carbon monosulfide Cesium SAVANNAH RIVER OPERATIONS OFFICE Strontium COMPRESSED

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PMMW IMAGE SUPER RESOLUTION FROM COMPRESSED SENSING OBSERVATIONS

PMMW IMAGE SUPER RESOLUTION FROM COMPRESSED SENSING OBSERVAT...

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European Signal Processing Conference

作者： Wael Saafin Salvador Villena Miguel Vega Rafael Molina Aggelos K. Katsaggelos Dept. of Computer Science and Artificial Intellegence University of Granada Dept. of Languages and Information Systems University of Granada Dept. of Electrical Engineering and Computer Science Northwestern University

ISBN: (纸本)9781479988518

In this paper we propose a novel optimization framework to obtain High Resolution (HR) Passive Millimeter Wave (P-MMW) images from multiple Low Resolution (LR) observations captured using a simulated Compressed Sensing (CS) imaging system. The proposed CS Super Resolution (CSS-R) approach combines existing CS reconstruction algorithms with the use of Super Gaussian (SG) regularization terms on the image to be reconstructed, smoothness constraints on the registration parameters to be estimated and the use of the Alternate Direction Methods of Multipliers (ADMM) to link the CS and SR problems. The image estimation subproblem is solved using Majorization-Minimization (MM), registration is tackled minimizing a quadratic function and CS reconstruction is approached as an l_1-minimization problem subject to a quadratic constraint. The performed experiments, on simulated and real PMMW observations, validate the used approach.

关键词： Passive millimeter-wave Compressive sensing Super resolution Image restoration super-resolution Compressed sensing image restoration technique millimeter wave images CONTAINMENT SPRAY carbon monosulfide Cesium conditioned stimulus Resolving power COMPRESSED Quadratics

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Automatic task based analysis and parallelization in the context of equation based languages 14

Automatic task based analysis and parallelization in the con...

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6th International Workshop on Equation-Based Object-Oriented Modeling languages and Tools, EOOLT 2014

作者： Gebremedhin, Mahder Fritzson, Peter PELAB-Programming Environments Laboratory Dept. of Computer and Information Science Linköping University LinköpingSE-581 83 Sweden

ISBN: (纸本)9781450332477

This paper presents an automatic parallelization approach for handling complex task systems with heavy dependencies, including methods of analyzing dependencies, representing them in a convenient way, and processing the resulting task graph representation. We present a library-based task system representation, clustering, profiling, and scheduling approach to simplify the otherwise tedious process of parallelizing complex task systems. We have implemented a flexible and robust task system handling library to manipulate and parallelize these complex task systems on shared memory multi-core and multi-processor systems. The implementation has been developed as part of the OpenModelica simulation environment. We demonstrate methods of extracting and utilizing parallelism in the context of mathematical modeling languages. Copyright is held by the owner/author(s).

关键词： Modeling languages

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A Virtual Coach for Active Ageing Based on Sentient Computing and M-Health

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8868卷 59-66页

作者： Callejas, Zoraida Griol, David Mc Tear, Michael F. Ĺopez-ćozar, RaḿOn Dept. Languages and Computer Systems Univ. of Granada CITIC-UGR Spain Dept. Computer Science Univ. Carlos III of Madrid Spain School of Computing and Mathematics Univ. of Ulster United Kingdom

ISBN: (纸本)9783319131047

As life expectancy increases it has become more necessary to find ways to support healthy ageing. A number of active ageing initiatives are being developed nowadays to foster healthy habits in the population. This paper presents our contribution to these initiatives in the form of a conversational agent that acts as a coach for physical activities. The agent can be developed as an Android app running on smartphones and coupled with cheap widely available sport sensors in order to provide meaningful coaching. It can be employed to prepare exercise sessions, provide feedback during the sessions, and to discuss the results after the exercise. It incorporates an affective component that informs dynamic user models to produce adaptive interaction strategies. © Springer International Publishing Switzerland 2014.

关键词： Wearable technology

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ZeuScansion: A tool for scansion of English poetry 11

ZeuScansion: A tool for scansion of English poetry

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11th International Conference on Finite State Methods and Natural Language Processing, FSMNLP 2013

作者： Agirrezabal, Manex Arrieta, Bertol Astigarraga, Aitzol Hulden, Mans Dept. of Computer Science Donostia20018 Spain University of Helsinki Department of modern languages Helsinki Finland

We present a finite state technology based system capable of performing metrical scansion of verse written in English. Scansion is the traditional task of analyzing the lines of a poem, marking the stressed and non-stressed elements, and dividing the line into metrical feet. The system's workflow is composed of several subtasks designed around finite state machines that analyze verse by performing tokenization, part of speech tagging, stress placement, and unknown word stress pattern guessing. The scanner also classifies its input according to the predominant type of metrical foot found. We also present a brief evaluation of the system using a gold standard corpus of human-scanned verse, on which a per-syllable accuracy of 86.78% is reached. The program uses open-source components and is released under the GNU GPL license. © 2013 Association for Computational Linguistics

关键词： Open source software

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ClaSP: An efficient algorithm for mining frequent closed sequences 1

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17th Pacific-Asia Conference on Knowledge Discovery and Data Mining, PAKDD 2013

作者： Gomariz, Antonio Campos, Manuel Marin, Roque Goethals, Bart Information and Communication Engineering Dept. University of Murcia Spain Languages and Systems Dept. University of Murcia Spain Mathematics and Computer Science Dept. University of Antwerp Belgium

ISBN: (数字)9783642374531

ISBN: (纸本)9783642374524

In this paper, we propose a new algorithm, called ClaSP for mining frequent closed sequential patterns in temporal transaction data. Our algorithm uses several efficient search space pruning methods together with a vertical database layout. Experiments on both synthetic and real datasets show that ClaSP outperforms currently well known state of the art methods, such as CloSpan. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Data mining

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Towards an architecture for managing big semantic data in real-time

Towards an architecture for managing big semantic data in re...

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7th European Conference on Software Architecture, ECSA 2013

作者： Cuesta, Carlos E. Martínez-Prieto, Miguel A. Fernández, Javier D. VorTIC3 Research Group Dept. of Comp. Languages and Systems II Rey Juan Carlos University Madrid Spain DataWeb Research Dept. of Computer Science University of Valladolid Segovia Spain DataWeb Research Dept. of Computer Science University of Valladolid Valladolid Spain Dept. of Computer Science University of Chile Santiago Chile

ISBN: (纸本)9783642390302

Big Data Management has become a critical task in many application systems, which usually rely on heavyweight batch processes to process large amounts of data. However, batch architectures are not an adequate choice for the design of real-time systems, where expected response times are several orders of magnitude underneath. This paper outlines the foundations for defining an architecture able to deal with such an scenario, fulfilling the specific needs of real-time systems which expose big RDF datasets. Our proposal (Solid) is a tiered architecture which separates the complexities of Big Data management from their real-time data generation and consumption. Big semantic data are stored and indexed in a compressed way following the Rdf/Hdt proposal;while at the same time, real-time requirements are addressed using NoSQL technology. Both are efficient layers, but their approaches are quite different and their combination is not easy. Two additional layers are required to achieve an overall high performance, satisfying real-time needs, and able to work even in a mobile context. © 2013 Springer-Verlag.

关键词： Real time systems

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POS-tag based poetry generation with WordNet 14

POS-tag based poetry generation with WordNet

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14th European Workshop on Natural Language Generation, ENLG 2013

作者： Agirrezabal, Manex Arrieta, Bertol Astigarraga, Aitzol Hulden, Mans IXA NLP Group Dept. of Computer Science Donostia20018 Spain University of Helsinki Department of Modern Languages Helsinki Finland

ISBN: (纸本)9781937284565

In this paper we present the preliminary work of a Basque poetry generation system. Basically, we have extracted the POS-tag sequences from some verse corpora and calculated the probability of each sequence. For the generation process we have defined 3 different experiments: Based on a strophe from the corpora, we (a) replace each word with other according to its POS-tag and suffixes, (b) replace each noun and adjective with another equally inflected word and (c) replace only nouns with semantically related ones (inflected). Finally we evaluate those strategies using a Turing Test-like evaluation. © 2013 Association for Computational Linguistics.

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Double inspection for run-time loop parallelization

Double inspection for run-time loop parallelization

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24th International Workshop on languages and Compilers for Parallel Computing, LCPC 2011

作者： Philippsen, Michael Tillmann, Nikolai Brinkers, Daniel Computer Science Dept. Programming Systems Group University of Erlangen-Nuremberg Erlangen Germany Microsoft Research One Microsoft Way Redmond WA United States

ISBN: (纸本)9783642360350

The Inspector/Executor is well-known for parallelizing loops with irregular access patterns that cannot be analyzed statically. The downsides of existing inspectors are that it is hard to amortize their high run-time overheads by actually executing the loop in parallel, that they can only be applied to loops with dependencies that do not change during their execution and that they are often specifically designed for array codes and are in general not applicable in object oriented just-in-time compilation. In this paper we present an inspector that inspects a loop twice to detect if it is fully parallelizable. It works for arbitrary memory access patterns, is conservative as it notices if changing data dependencies would cause errors in a potential parallel execution, and most importantly, as it is designed for current multicore architectures it is fast - despite of its double inspection effort: it pays off at its first use. On benchmarks we can amortize the inspection overhead and outperform the sequential version from 2 or 3 cores onward. © 2013 Springer-Verlag.

关键词： Inspection

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