Browsing by Subject "Representació del coneixement (Teoria de la informació)"
Now showing items 1-20 of 25
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A flexible fuzzy inductive reasoning approach for load modelling able to cope with missing data
(Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering (ICST), 2015)
Conference report
Open AccessLoad 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
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference report
Open AccessThis 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
(Springer, 2011)
Conference report
Restricted access - publisher's policyLattices 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
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
Article
Open AccessIn 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
(International Institute on Informatics and Sistemics IIIS, 2009)
Conference report
Open AccessEste 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
(2018-12-22)
Article
Open AccessBackground: 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
(Elsevier, 2017-09-05)
Article
Open AccessThe 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
(Universitat Politècnica de Catalunya, 2009-09)
Master thesis
Restricted access - author's decisionThe 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
(2021-04-10)
Article
Open AccessIn 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
(1987)
Research report
Open AccessEste 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
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
Article
Open AccessWe 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
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
Article
Open AccessThis 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
(2011-06-27)
Research report
Open AccessUML 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
(IOS Press, 2016-01-15)
Article
Open AccessThe 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
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
Article
Open AccessSome 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
(IOS PRESS-ECSC, BRUXELLES, 2009-10-01)
Conference report
Restricted access - publisher's policyIt 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
(2019-02-06)
Article
Open AccessWe 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
(1991-11)
Research report
Open AccessEn 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
(1998-06)
Research report
Open AccessEl 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
(2018)
Conference lecture
Open AccessRecurrent 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 ...
