Exploració per tema "Representació del coneixement (Teoria de la informació)"

Ara es mostren els items 1-20 de 25

    • A flexible fuzzy inductive reasoning approach for load modelling able to cope with missing data 

      Jurado Gómez, Sergio; Nebot Castells, M. Àngela; Múgica Álvarez, Francisco (Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering (ICST), 2015)
      Text en actes de congrés
      Accés obert
      Load forecasting in buildings and homes has been in recent years a task of increasing importance. New services and functionalities can be offered in the home environment due to this predictions, for instance, the detection ...

    • Adaptive generation of multilingual questions and answers from web content 

      Gatius Vila, Marta (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      This article describes the adaptive generation of questions and answers from web content to assist the user when searching for information. The approach proposed integrates user models, domain-restricted knowledge ...

    • Border algorithms for computing Hasse diagrams of arbitrary lattices 

      Balcázar Navarro, José Luis; Tirnauca, Cristina (Springer, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Lattices are mathematical structures with many applications in computer science; among these, we are interested in fields like data mining, machine learning, or knowledge discovery in databases. One well-established use ...

    • Coherence principles for handling qualitative and quantitative partial probabilistic assessments 

      Coletti, Giulianella (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
      Article
      Accés obert
      In this paper we present an overview of mathematical models for handling partial entailments and their extensions in a probabilistic frame.

    • Diagramas Informáticos Aplicados a Diseño y Arquitectura 

      Puig Costa, Janina; Ribó Ventura, José Oriol (International Institute on Informatics and Sistemics IIIS, 2009)
      Text en actes de congrés
      Accés obert
      Este artículo pretende ofrecer argumentos reflexivos acerca del impacto producido por el incipiente uso de diagramas informáticos en los procesos de diseño y el carácter retroactivo de los mismos con el producto acabado. En ...

    • FELLA: an R package to enrich metabolomics data 

      Picart Armada, Sergio; Fernández Albert, Francesc; Vinaixa, Maria; Yanes, Óscar; Perera Lluna, Alexandre (2018-12-22)
      Article
      Accés obert
      Background: Pathway enrichment techniques are useful for understanding experimental metabolomics data. Their purpose is to give context to the affected metabolites in terms of the prior knowledge contained in metabolic ...

    • Frequent patterns in ETL workflows: An empirical approach 

      Theodorou, Vasileios; Abelló Gamazo, Alberto; Thiele, Maik; Lehner, Wolfgang (Elsevier, 2017-09-05)
      Article
      Accés obert
      The complexity of Business Intelligence activities has driven the proposal of several approaches for the effective modeling of Extract-Transform-Load (ETL) processes, based on the conceptual abstraction of their operations. ...

    • Graph representatives: two different approaches based on the median and the barycenter concepts 

      Bardaji Goikoetxea, Itziar (Universitat Politècnica de Catalunya, 2009-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      The straight advantages of the use of graphs for representation purposes appear to be useless in some applications due to the lack of mathematical structure in graph domains. An illustrative example is the problem of ...

    • Instance-level update in DL-Lite ontologies through first-order rewriting 

      Giacomo, Giuseppe De; Oriol Hilari, Xavier; Rosati, Riccardo; Savo, Domenico Fabio (2021-04-10)
      Article
      Accés obert
      In this paper we study instance-level update in DL-LiteA , a well-known description logic that influenced the OWL 2 QL standard. Instance-level update regards insertions and deletions in the ABox of an ontology. In particular ...

    • Lenguajes de representación del conocimiento basados en frames: estudio comparativo 

      Abad Soriano, María Teresa; Armengol Voltas, Eva; Blanco, Miguel Ángel; Castell Ariño, Núria; Delgado, Lourdes; Garijo, Francisco J.; González, Juan; Martí Antonin, Maria Antònia; Ribas Framis, Francesc; Rodríguez Hontoria, Horacio; Urretavizcaya, Maite; Verdejo Maillo, Maria Felisa; Vila Grabulosa, Lluís (1987)
      Report de recerca
      Accés obert
      Este documento es el resultado del seminario de trabajo del grupo G.U.I.A. sobre herramientas de representación del conocimiento llevado a cabo desde Octubre del 86 a Junio del 87. El objetivo principal es establecer una ...

    • Local Boolean manifolds from knowledge representation systems 

      Cattaneo, Gianpiero (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
      Article
      Accés obert
      We introduce a structure to represent "observations" on entities in order to obtain "knowledge" about some of their characteristic properties or attributes. This structure is based on the Pawlak's definition of "information ...

    • On (anti) conditional independence in Dempster-Shafer theory 

      Klopotek, Mieczyslaw A. (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
      Article
      Accés obert
      This paper verifies a result of [9] concerning graphoidal structure of Shenoy's notion of independence for Dempster-Shafer theory of belief functions. Shenoy proved that his notion of independence has graphoidal ...

    • On the meanings of subsetting, specialization and redefinition in UML 

      Costal Costa, Dolors; Gómez Seoane, Cristina; Guizzardi, Giancarlo (2011-06-27)
      Report de recerca
      Accés obert
      UML 2 has improved the expressiveness of the language with respect to associations in several manners. A significant one has been the introduction of the association redefinition concept. Association subsetting and association ...

    • Overview of the MPEG-21 Media Contract Ontology 

      Rodríguez Doncel, Víctor; Delgado Mercè, Jaime; Llorente Viejo, Silvia; Rodríguez Luna, Eva; Boch, Laurent (IOS Press, 2016-01-15)
      Article
      Accés obert
      The MPEG-21 Media Contract Ontology (MCO), a part of the standard ISO/IEC 21000, is an ontology to represent contracts dealing with rights on multimedia assets and intellectual property protected content in general. A core ...

    • Qualitative reasoning in Bayesian networks 

      Garbolino, Paolo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
      Article
      Accés obert
      Some probabilistic inference rules which can be compared with the inference rules of preferential logic are given and it will be shown how they work in graphical models, allowing qualitative plausible reasoning in Bayesian ...

    • Reasoning about actions for the management of Urban Wastewater System: preliminary report 

      Nieves Sánchez, Juan Carlos; Aulinas, Montse; Cortés García, Claudio Ulises (IOS PRESS-ECSC, BRUXELLES, 2009-10-01)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      It is well-known that the management of Urban Wastewater Systems (UWS) is a complex and critical process. To decide which is the correct sequence of actions for managing a given circumstance it is necessary a sophisticated ...

    • Relative entailment among probabilistic implications 

      Atserias, Albert; Balcázar Navarro, José Luis; Piceno Cabrera, Marie Ely (2019-02-06)
      Article
      Accés obert
      We study a natural variant of the implicational fragment of propositional logic. Its formulas are pairs of conjunctions of positive literals, related together by an implicational-like connective; the semantics of this sort ...

    • Representació del coneixement: una síntesi 

      Sànchez-Marrè, Miquel (1991-11)
      Report de recerca
      Accés obert
      En aquesta síntesi es presenta una visió global dels principals formalismes de representació del coneixement, que s'han desenvolupat al llarg de la història de la Intel·ligència Artificial. Aquesta revisió ve precedida ...

    • Sistemas tutores inteligentes en la World Wide Web : estado del arte 

      Saboya Vargas, Aniceto (1998-06)
      Report de recerca
      Accés obert
      El aprendizaje humano es un proceso mental que requiere estímulos externos, y para lograr estos se han usado diversas técnicas. Es ya reconocido el potencial de los computadores con fines educativos, pero los intentos de ...

    • Skip RNN: learning to skip state updates in recurrent neural networks 

      Campos Camunez, Victor; Jou, Brendan; Giró Nieto, Xavier; Torres Viñals, Jordi; Chang, Shih-Fu (2018)
      Comunicació de congrés
      Accés obert
      Recurrent Neural Networks (RNNs) continue to show outstanding performance in sequence modeling tasks. However, training RNNs on long sequences often face challenges like slow inference, vanishing gradients and difficulty ...