Exploració per tema "Classificació AMS::68 Computer science::68P Theory of data"

Ara es mostren els items 1-20 de 26

    • A comparative study of microaggregation methods 

      Mateo Sanz, Josep Maria; Domingo Ferrer, Josep (Institut d'Estadística de Catalunya, 1998)
      Article
      Accés obert
      Microaggregation is a statistical disclosure control technique for microdata. Raw microdata (i.e. individual records) are grouped into small aggregates prior to publication. Each aggregate should contain at least k records ...

    • A first approach to the multipurpose relational database server 

      Blanco, Ignacio J.; Martínez-Cruz, Carmen; Serrano Chica, José María; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2005)
      Article
      Accés obert
      In this paper, an architecture and an implementation of a multipurpose relational database server are proposed. This architecture enables classical queries to be executed, deductions to be made, and data mining operations to ...

    • A GA-P algorithm to automatically formulate extended Boolean queries for a fuzzy information retrieval system 

      Cordón García, Oscar; Moya Anegón, Félix de; Zarco Fernández, Carmen (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
      Article
      Accés obert
      Although the fuzzy retrieval model constitutes a powerful extension of the boolean one, being able to deal with the imprecision and subjectivity existing in the Information Retrieval process, users are not usually able ...

    • Advantages of combining AI and statistic for knowledge discovery on functional disability: multivariate analysis of assessment scales using clustering based on rules 

      Gibert, Karina; Annicchiarico, Roberta; Cortés García, Claudio Ulises; Caltagirone, Carlo (2009-12)
      Article
      Accés obert
      In Europe, and other developed areas, senior citizens are a fast growing part of population. This increases proportion of disabled persons and proportion of persons with reduced quality of life. The concept of disability ...

    • An elemental processor of fuzzy SQL 

      Medina Rodríguez, Juan Miguel; Pons Capote, Olga; Vila Miranda, María Amparo (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1994)
      Article
      Accés obert
      This paper reports an alternative for implementing an SQL fuzzy extension on a Fuzzy Relational Database System. This proposal tries to build an FSQL processor using representation and manipulation mechanisms offered by ...

    • Aplicació de l’anàlisi de procedències al disseny del contingut de bases de dades 

      Olivé Ramon, Antoni (Universitat Politècnica de Barcelona. Centre de Càlcul, 1980-09)
      Article
      Accés obert
      A la primera part de l'article, es fa una exposició de l'anàlisi de precedències entre conjunts d'informació i, en particular, de l'anàlisi de derivabilitat, en base al model relacional de dades. A la segona part, s'aplica ...

    • aTLP: a color-based model of uncertainty to evaluate the risk of decisions based on prototypes 

      Gibert, Karina; Conti, Dante (IOS Press, 2015-01-01)
      Article
      Accés obert
      Clustering techniques find homogeneous and distinguishable prototypes. Careful interpretation of these prototypes is crucial to assist the experts to better organize this know-how and to really improve their decision-making ...

    • Barcelona Virtual Mobility Lab: the multimodal transport simulation testbed for emerging mobility concepts evaluation 

      Montero Mercadé, Lídia; Linares Herreros, María Paz; Salmeron Moya, Juan; Recio, Gonzalo; Lorente, Ester; Vázquez, Juan José (International Academy, Research, and Industry Association (IARIA), 2018)
      Text en actes de congrés
      Accés obert
      New sustainable mobility concepts and smart resilient ideas are arising every day. However, there is not an easy way to bring these ideas into reality, or to test how good they are as mobility solutions. Virtual Mobility ...

    • Coprivacy: an introduction to the theory and applications of co-operative privacy 

      Domingo-Ferrer, Josep (Institut d'Estadística de Catalunya, 2011)
      Article
      Accés obert
      We introduce the novel concept of coprivacy or co-operative privacy to make privacy preservation attractive. A protocol is coprivate if the best option for a player to preserve her privacy is to help another player in ...

    • El model informacional 

      Olivé Ramon, Antoni (Universitat Politècnica de Barcelona. Centre de Càlcul, 1978-12)
      Article
      Accés obert
      Des de fa uns anys, s'està realitzant un esforç important de recerca en el tema dels models de dades, especialment en els models conceptuals. En aquest article fem una proposta d'un nou model conceptual, que anomenem model ...

    • Flexible information retrieval: some research trends 

      Pasi, Gabriella (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2002)
      Article
      Accés obert
      In this paper some research trends in the field of Information Retrieval are presented. The focus is on the definition of flexible systems, i.e. systems that can represent and manage the vagueness and uncertainty which is ...

    • Fuzzy adpatation for information acces to digital libraries 

      Fernández Llamas, Camino; Aedo, Ignacio; Díaz, Paloma; Matellán Olivera, Vicente (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2000)
      Article
      Accés obert
      Different models have been proposed to build systems that adapt to the user reducing the complexity in the information browsing process, saving user time and offering personalised interfaces. The work described ...

    • How can graph databases and reasoning be combined and integrated? 

      Pasarella Sánchez, Ana Edelmira (Sociedad de Ingeniería de Software y Tecnologías de Desarrollo de Software (SISTEDES), 2022)
      Text en actes de congrés
      Accés obert
      Nowadays the graph data model has been accepted as one of the most suitable data models to formalize relationships among entities of many domains. Deductive databases based on the Datalog language have been used to deduce ...

    • Impact on network performance of probe vehicle data usage: an experimental design for simulation assessment 

      Montero Mercadé, Lídia; Linares Herreros, María Paz; Casanovas Garcia, Josep; Codina Sancho, Esteve; Recio, Gonzalo; Lorente, Ester; Salmeron Moya, Juan (2018-06-25)
      Article
      Accés obert
      Probe-based technologies are proliferating as a means for inferring traffic states. Technological companies are interested in traffic data for computing the best routes in a traffic-aware manner and they also provide ...

    • Implementación y evaluación de algoritmos locales de detección de outliers geoespaciales 

      Guerrero Salinas, Rocío Amaranto (Universitat Politècnica de Catalunya / Universitat de Barcelona, 2022-06)
      Projecte Final de Màster Oficial
      Accés obert
      Existe una amplia variedad de enfoques para tratar el problema de la detección de valores atípicos, con importantes diferencias en cuanto a principios metodológicos y aplicaciones particulares, influyendo sobre el propio ...

    • Inherited disorder phenotypes: controlled annotation and statistical analysis for knowledge mining from gene lists 

      Masseroli, M; Galati, O; Manzotti, M; Gibert, Karina; Pinciroli, Gibert K F (2005-11)
      Article
      Accés obert
      Background Analysis of inherited diseases and their associated phenotypes is of great importance to gain knowledge of underlying genetic interactions and could ultimately give clinically useful insights into disease ...

    • Introducing FDSA (Fuzzy Dictionary of Synonyms and Antonyms): applications on information retrieval and stand-alone use 

      Fernández Lanza, Santiago; Graña, Jorge; Sobrino Cerdeiriña, Alejandro (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2003)
      Article
      Accés obert
      We start by analyzing the role of imprecision in information retrieval in the Web, some theoretical contributions for managing this problem and its presence in search engines, with special emphasis on the use of thesaurus ...

    • Knowledge-driven delivery of home care services 

      Batet, Montserrat; Isern, David; Marín, Lucas; Martínez Pérez, Sergio; Moreno Ribas, Antonio; Sánchez Ruenes, David; Valls Mateu, Aïda; Gibert, Karina (2012-02)
      Article
      Accés obert
      Home Care (HC) assistance is emerging as an effective and efficient alternative to institutionalized care, especially for the case of senior patients that present multiple co-morbidities and require life long treatments ...

    • Métodos para la comprobación de la integridad en base de datos deductivas 

      Mota Herranz, Laura; Celma Giménez, Matilde (Institut d'Estadística de Catalunya, 1993)
      Article
      Accés obert
      La comprobación de la integridad es un problema clásico en bases de datos; los primeros métodos fueron propuestos para simplificar la comprobación de restricciones estáticas en bases de datos relacionales extendiéndose ...

    • Miniquery oral para una base de datos bibliográfica 

      Rulot Segovia, Héctor; Sanchís Arnal, Emilio; Vidal Ruiz, Enrique; Casacuberta Nolla, Francisco (Universitat Politècnica de Barcelona. Centre de Càlcul, 1984-06)
      Article
      Accés obert
      En este trabajo se unen los resultados prácticos de las investigaciones del CIUV en Reconocimiento Automático del habla con aplicaciones ya consolidadas en el área de las Bases de Datos, abordándose el problema de la ...