Exploració per autor "Nin Guerrero, Jordi"
Ara es mostren els items 15-34 de 42
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Fuzzy measures and integrals in re-identification problems
Nin Guerrero, Jordi; Torra i Reventós, Vicenç (2006)
Text en actes de congrés
Accés obertIn this paper we give an overview of our approach of using aggregation operators, and more specifically, fuzzy integrals for solving re-identification problems. We show that the use of Choquet integrals are suitable for ... -
How to group attributes in multivariate microaggregation
Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç (2008-04-01)
Article
Accés restringit per política de l'editorialMicroaggregation is one of the most employed microdata protection methods. It builds clusters of at least k original records, and then replaces these records with the centroid of the cluster. When the number of attributes ... -
Human pose completion in partial body camera shots
Tous Liesa, Rubén; Nin Guerrero, Jordi; Igual Muñoz, Laura (2023-07-28)
Article
Accés restringit per política de l'editorialMany actual images contain partial body camera shots, in which a significant part of the body is not visible. This issue is especially prevalent in film images, where less than 10% are full-body shots. Most 2D human pose ... -
Improving microaggregation for complex record anonymization
Pont Tuset, Jordi; Nin Guerrero, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor (Springer Verlag, 2008)
Text en actes de congrés
Accés restringit per política de l'editorialMicroaggregation is one of the most commonly employed microdata protection methods. This method builds clusters of at least k original records and replaces the records in each cluster with the centroid of the cluster. ... -
Increasing polynomial regression complexity for data anonymization
Nin Guerrero, Jordi; Pont Tuset, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor (IEEE Computer Society, 2007)
Text en actes de congrés
Accés obertPervasive computing and the increasing networking needs usually demand from publishing data without revealing sensible information. Among several data protection methods proposed in the literature, those based on linear ... -
Kd-trees and the real disclosure risks of large statistical databases
Herranz Sotoca, Javier; Nin Guerrero, Jordi; Solé Simó, Marc (Elsevier, 2011)
Article
Accés restringit per política de l'editorialIn data privacy, record linkage can be used as an estimator of the disclosure risk of protected data. To model the worst case scenario one normally attempts to link records from the original data to the protected data. ... -
Modeling projections in microaggregation
Nin Guerrero, Jordi; Torra i Reventós, Vicenç (2008)
Text en actes de congrés
Accés obertMicroaggregation is a method used by statistical agencies to limit the disclosure of sensitive microdata. It has been proven that microaggregation is an NP-hard problem when more than one variable is microaggregated at the ... -
More hybrid and secure protection of statistical data sets
Herranz Sotoca, Javier; Nin Guerrero, Jordi; Solé Simó, Marc (IEEE Computer Society Publications, 2012-09)
Article
Accés restringit per política de l'editorialDifferent methods and paradigms to protect data sets containing sensitive statistical information have been proposed and studied. The idea is to publish a perturbed version of the data set that does not leak confidential ... -
On method-specific record linkage for risk assessment
Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç (2007)
Text en actes de congrés
Accés obertNowadays, the need for privacy motivates the use of methods that permit us to protect a microdata file both minimizing the disclosure risk and preserving the statistical utility. Nevertheless, research is usually focused ... -
On the disclosure risk of multivariate microaggregation
Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç (Elsevier Science Ltd., 2008-07-22)
Article
Accés restringit per política de l'editorialThe aim of data protection methods is to protect a microdata file both minimizing the disclosure risk and preserving the data utility. Microaggregation is one of the most popular such methods among statistical agencies. ... -
On the use of aggregation operators for location privacy
Valls, Aïda; Nin Guerrero, Jordi; Torra i Reventós, Vicenç (2009)
Text en actes de congrés
Accés restringit per política de l'editorialNowadays, the management of sequential and temporal data is an increasing need in many data mining processes. Therefore, the development of new privacy preserving data mining techniques for sequential data is a crucial ... -
On the use of semantic blocking techniques for data cleansing and integration
Nin Guerrero, Jordi; Muntés Mulero, Víctor; Martínez Bazán, Norbert; Larriba Pey, Josep (IEEE Computer Society, 2007)
Text en actes de congrés
Accés obertRecord Linkage (RL) is an important component of data cleansing and integration. For years, many efforts have focused on improving the performance of the RL process, either by reducing the number of record comparisons ... -
On the use of social trajectory-based clustering methods for public transport optimization
Nin Guerrero, Jordi; Carrera Pérez, David; Villatoro, Daniel (2014)
Article
Accés obertPublic transport optimisation is becoming everyday a more di cult and challenging task, because of the increasing number of transportation options as well as the exponential increase of users. Many research contributions ... -
Optimal symbol alignment distance: a new distance for sequences of symbols
Herranz Sotoca, Javier; Nin Guerrero, Jordi; Solé Simó, Marc (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-10-14)
Article
Accés obertComparison functions for sequences (of symbols) are important components of many applications, for example clustering, data cleansing and integration. For years, many efforts have been made to improve the performance of ... -
Parameter determination of ONN (Ordered Neural Networks)
Pont Tuset, Jordi; Medrano Gracia, Pau; Nin Guerrero, Jordi; Larriba Pey, Josep; Muntés Mulero, Víctor (2007)
Report de recerca
Accés obertThe need for data privacy motivates the development of new methods that allow to protect data minimizing the disclosure risk without losing information. In this paper, we propose a new protection method for numerical data ... -
Partial symbol ordering distance
Herranz Sotoca, Javier; Nin Guerrero, Jordi (Springer Verlag, 2009)
Text en actes de congrés
Accés restringit per política de l'editorialNowadays sequences of symbols are becoming more important, as they are the standard format for representing information in a large variety of domains such as ontologies, sequential patterns or non numerical attributes in ... -
Record linkage for database integration using fuzzy integrals
Nin Guerrero, Jordi; Torra i Reventós, Vicenç (Wiley InterScience, 2008-06-01)
Article
Accés restringit per política de l'editorialGiven two-data databases, record linkage algorithms try to establish which records of these files contain information on the same individual. Standard record linkage algorithms assume that both files are described using ... -
Revisiting distance-based record linkage for privacy-preserving release of statistical datasets
Herranz Sotoca, Javier; Nin Guerrero, Jordi; Rodríguez, Pablo; Tassa, Tamir (Elsevier, 2015-07-17)
Article
Accés obertStatistical Disclosure Control (SDC, for short) studies the problem of privacy-preserving data publishing in cases where the data is expected to be used for statistical analysis. An original dataset T containing sensitive ... -
Secure and efficient anonymization of distributed confidential databases
Herranz Sotoca, Javier; Nin Guerrero, Jordi (2014)
Article
Accés restringit per política de l'editorialLet us consider the following situation: t entities (e.g., hospitals) hold different databases containing different records for the same type of confidential (e.g., medical) data. They want to deliver a protected version ... -
Semantic blocking for record linkage
Nin Guerrero, Jordi; Muntés Mulero, Víctor; Martínez Bazán, Norbert; Larriba Pey, Josep (IOS Press, 2007)
Text en actes de congrés
Accés restringit per política de l'editorialRecord Linkage (RL) is an important component of data cleaning and integration and data processing in general. For years, many efforts have focused on improving the performance of the RL process, either by reducing the ...