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8th European Conference on Speech Communication and Technology, EUROSPEECH 2003

作者： Barrachina, Sergio Vilar, Juan Miguel Dpt. of Computer Engineering and Science Universidad Jaume i Spain Dpt. of Programming Languages and Computer Systems Universidad Jaume i Spain

To reduce speech recognition error rate we can use better statistical language models. These models can be improved by grouping words into word equivalence classes. Clustering algorithms can be used to automatically do this word grouping. We present an incremental clustering algorithm and two iterative clustering algorithms. Also, we compare them with previous algorithms. The experimental results show that the two iterative algorithms perform as well as previous ones. It should be pointed out that one of them, that uses the leaving one out technique, has the ability to automatically determine the optimum number of classes. These iterative algorithms are used by the incremental one. On the other hand, the proposed incremental algorithm achieves the best results of the compared algorithms, its behavior is the most regular with the variation of the number of classes and can automatically determine the optimum number of classes.

关键词： Clustering algorithms

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Fuzzy ontologies and fuzzy integrals

Fuzzy ontologies and fuzzy integrals

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2011 11th International Conference on Intelligent systems Design and Applications, ISDA'11

作者： Bobillo, Fernando Straccia, Umberto Dpt. of Computer Science and Systems Engineering University of Zaragoza Spain ISTI - CNR Pisa Italy

ISBN: (纸本)9781457716751

Fuzzy ontologies extend classical ontologies to allow the representation of imprecise and vague knowledge. Although a relatively important amount of work has been carried out in the last years and they have been successfully used in several applications, several notions from fuzzy logic, such as fuzzy integrals, have not been considered yet in fuzzy ontologies. In this work, we show how to support fuzzy integrals in fuzzy ontologies. As a theoretical formalism, we provide the syntax and semantics of a fuzzy Description Logic with fuzzy integrals. We also provide a reasoning algorithm for a family of fuzzy integrals and show how to encode them into the language Fuzzy OWL 2. © 2011 IEEE.

关键词： Fuzzy logic

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Grid computing and CBR deployment: Monitoring principles for a suitable engagement

Grid computing and CBR deployment: Monitoring principles for...

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9th International Conference on Distributed Computing and Artificial Intelligence, DCAI 2012

作者： Castillo, Luis F. Isaza, Gustavo Bedia, Manuel Glez Aguilera, Miguel Correa, Juan David Universidad Nacional de Colombia Industrial Engineering Dpt. Bogotá Colombia Universidad de Caldas Computer Science and Systems Engineering Dpt. Manizales Colombia Universidad de Zaragoza Computer Science Dpt. Saragossa Spain Universidad Autónoma de Manizales Systems Engineering Manizales Colombia

ISBN: (纸本)9783642287640

This paper presents a mathematical technique for modeling the generation of Grid-solutions employing a Case based reasoning system (CBR). Roughly speaking, an intelligent system that tries to be adapted to highly dynamic environment needs an efficient integration of high-level processes (deliberative and time-costly) within low-level (reactive, faster but poorer in quality) processes. The most relevant aspect of our current approach is that, unexpectedly, the performance of the CBR-system do not get worse any time that it retrieves worse cases in situations even when it has enough time to generate better solutions. We concentrate on formal aspects of the proposed Grid-CBR system without establishing which should be the most adequate procedure in a subsequent implementation stage. The advantage of the presented scheme is that it does not depend on neither the particular problem nor a concrete environment. It consists in a formal approach that only requires, on one hand, local information about the averaged-time spent by the system in obtaining a solution and, on the other hand, an estimation about their temporal restrictions. The potential use of industry standard technologies to implement such a Grid-enabled CBR system is discussed here too. © 2012 Springer-Verlag.

关键词： Grid computing

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IxaMed at CLEF eHealth 2018 task 1: ICD10 coding with a sequence-to-sequence approach 19

IxaMed at CLEF eHealth 2018 task 1: ICD10 coding with a sequ...

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19th Working Notes of CLEF Conference and Labs of the Evaluation Forum, CLEF 2018

作者： Atutxa, A. Casillas, A. Ezeiza, N. Fresno, V. Goenaga, I. Gojenola, K. Martínez, R. Oronoz, M. Perez-De-Viñaspre, O. Dpt. Languages and Computer Systems School of Engineering UPV EHU Bilbao Spain Dpt. Electricity and Electronics Fac. of Science and Technology UPV EHU Leioa Spain Dpt. Languages and Computer Systems Faculty of Informatics UPV EHU Donostia-San Sebastian United States Dpt. Languages and Computer Systems School of Computer Engineering UNED Madrid Spain

Hospital systems routinely assign disease codes (ICD10 codes) to medical records. The challenge stands on treating natural and nonstandard language in which doctors express their diagnoses and, additionally, to solve a large-scale classification problem, as there are thousands of possible codes. In this working notes paper, we present our system and the results of the CLEF 2018 eHealth Evaluation Task 1 on Multilingual Information Extraction-ICD10 coding. This benchmark addresses information extraction in written text with focus on several languages, specifically Hungarian, Italian and French. The goal is to automatically assign ICD10 codes to diagnostic terms of death certificates. The problem can be cast in different ways, for example as a multilabel classification task or as sequence-to-sequence prediction. Our proposal follows this last approach, with promising results, well above the average results for the task. It only relies on the material provided by the task organizers, allowing the application of the same system to all datasets.

关键词： Machine learning

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Automatic discovery of translation collocations from bilingual corpora 16

Automatic discovery of translation collocations from bilingu...

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16th European Conference on Artificial Intelligence, ECAI 2004

作者： Barrachina, Sergio Vilar, Juan Miguel Dpt. of Computer Engineering and Science Universitat Jaume I Castellón Spain Dpt. of Programming Languages and Computer Systems Universitat Jaume I Castellón Spain

ISBN: (纸本)9781586034528

We describe a method to automatically discover translation collocations from a bilingual corpus and how these improve a machine translation system. The process of inference of collocations is iterative: An alignment is used to derive an initial set of collocations, these are used in turn to improve the alignment and this new alignment is used to generate new collocations. This process is repeated until no more collocations are found. The final alignment and the set of collocations are used to train a translation model. We use a model that is based on finite state transducers and word clusters and has been modified to work with collocations in addition to single words. We present experiments in which we show that automatic collocations improve translation quality without prior linguistic information.

关键词： Alignment

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Reasoning in fuzzy OWL 2 with delorean

Reasoning in fuzzy OWL 2 with delorean

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6th International Workshop on Uncertainty Reasoning for the Semantic Web, URSW 2010, Held as Part of the 9th International Semantic Web Conferences, ISWC 2010 and 1st International Workshop on Uncertainty in Description Logics, UniDL2010

作者： Bobillo, Fernando Delgado, Miguel Gómez-Romero, Juan Dpt. of Computer Science and Systems Engineering University of Zaragoza Spain Dpt. of Computer Science and Artificial Intelligence University of Granada Spain Applied Artificial Intelligence Group University Carlos III Madrid Spain

ISBN: (纸本)9783642359743

Classical ontologies are not suitable to represent imprecise or vague information, which has led to several extensions using non-classical logics. In particular, several fuzzy extensions have been proposed in the literature. In this paper, we present the fuzzy ontology reasoner DeLorean, the first to support a fuzzy extension of OWL 2. We discuss how to use it for fuzzy ontology representation and reasoning, and describe some implementation details and optimization techniques. An empirical evaluation demonstrates that these optimizations considerably improve the performance of the reasoner. © 2013 Springer-Verlag Berlin Heidelberg.

关键词： Ontology

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A comparable study employing weka clustering/classification algorithms for web page classification

A comparable study employing weka clustering/classification ...

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15th Panhellenic Conference on Informatics, PCI 2011

作者： Charalampopoulos, Ioannis Anagnostopoulos, Ioannis Dpt of Inf. and Comm. Systems Engineering University of Aegean Karlovassi Samos island Greece Dpt of Computer Science and Biomedical Informatics University of Central Greece Lamia Greece

ISBN: (纸本)9780769543895

Documents and web pages share many similarities. Thus classification methods used in documents can be applied to advanced web content, with or even without modifications. Algorithms for document and web classification are presented as an introduction. One out of many tools that can be used in method evaluation, application and modification is WEKA (Waikato Environment for Knowledge Analysis). Testing results and conclusions strengthen the principles and bases of classification, while demonstrating the need for a new interlayer in the evaluation of classification methods. © 2011 IEEE.

关键词： Websites

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SSME curricula:an overview

SSME curricula:an overview

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2010 International Conference on Services science, Management and engineering (SSME 2010)

作者： Gianmario Motta Thiago Barroero Giovanni Pignatelli DIS (Dpt of Computer Engineering and Systems Science) University of Pavia

Services science(SSME) is a *** the 2006 manifesto published by Communications of ACM several universities are launching SSME *** order to give a well founded overview of SSME and related curricula,we first address SSME scope *** on we summarize the main contents of the curriculum and particularly the learning approach in the core *** case studies,we describe the SSME curriculum of University of Peking and University of *** we consider *** service engineers are designers of IT-enabled services who know how to analyze and design business service chains and to identify,customize and integrate appropriate IT *** from traditional IT engineers,service engineers use a critical value based approach with a faster and comprehensive analysis

关键词： Service sciences,SSME,Services engineering,engineering Education,Information Analysis,Business Process Analysis,Business Process Design,Business Process Modeling

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Development of an ubiquitous decision support system for clinical guidelines using MDA

Development of an ubiquitous decision support system for cli...

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19th International Conference on Advanced Information systems engineering, CAiSE 2007

作者： Porres, Ivan Domínguez, Eladio Pérez, Beatriz Rodríguez, Áurea Zapata, María A. Department of Computer Science Åbo Akademi University Joukahaisenkatu 3-5 B Turku FIN-20520 Finland Dpt. of Computer Science and Systems Engineering University of Zaragoza Pedro Cerbuna 12 E-50009 Zaragoza Spain

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SSME Curricula: An Overview

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Physics Procedia 2012年 33卷 228-235页

作者： Gianmario Motta Thiago Barroero Giovanni Pignatelli DIS (Dpt of Computer Engineering and Systems Science) University of Pavia Pavia Italy Xiaofei Xu Harbin Institute of Technology Harbin China

Services science (SSME) is a reality. After the 2006 manifesto published by Communications of ACM several universities are launching SSME curricula. In order to give a well founded overview of SSME and related curricula, we first address SSME scope issues. Later on we summarize the main contents of the curriculum and particularly the learning approach in the core classes. As case studies, we describe the SSME curriculum of University of Peking and University of Pavia. Finally we consider results. Graduate service engineers are designers of IT-enabled services who know how to analyze and design business service chains and to identify, customize and integrate appropriate IT modules. Differently from traditional IT engineers, service engineers use a critical value based approach with a faster and comprehensive analysis

关键词： Service sciences SSME Services engineering engineering Education Information Analysis Business Process Analysis Business Process Design Business Process Modeling

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