Exploració per autor "Nin Guerrero, Jordi"
Ara es mostren els items 21-40 de 42
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Modeling projections in microaggregation
(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
(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
(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
(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
(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
(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
(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
(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)
(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
(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
(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
(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
(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
(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 ... -
Speed up gradual rule mining from stream data! A B-tree and OWA-based approach
(2010-11-19)
Article
Accés restringit per política de l'editorialGradual rules allow users to be provided with rules describing the ordering correlations among attributes. Such a rule is for instance given by the higher the salary and the lower the number of cars, the higher the number ... -
Towards the cloudification of the social networks analytics
(Springer, 2014)
Text en actes de congrés
Accés obertIn the last years, with the increase of the available data from social networks and the rise of big data technologies, social data has emerged as one of the most profitable market for companies to increase their benefits. ... -
Towards the evaluation of time series protection methods
(2009-02-04)
Article
Accés restringit per política de l'editorialThe goal of statistical disclosure control (SDC) is to modify statistical data so that it can be published without releasing confidential information that may be linked to specific respondents. The challenge for SDC is to ... -
Towards the use of OWA operators for record linkage
(2005)
Text en actes de congrés
Accés obertRecord linkage is used to establish links between those records that while belonging to two different files correspond to the same individual. Classical approaches assume that the two files contain some common variables, ... -
Towards the use of sequential patterns for detection and characterization of natural and agricultural areas
(Springer, 2014)
Text en actes de congrés
Accés obertNowadays, a huge amount of high resolution satellite images are freely available. Such images allow researchers in environmental sciences to study the different natural habitats and farming practices in a remote way. ... -
Using genetic algorithms for attribute grouping in multivariate microaggregation
(2014-01-01)
Article
Accés obertAnonymization techniques that provide k-anonymity suffer from loss of quality when data dimensionality is high. Microaggregation techniques are not an exception. Given a set of records, attributes are grouped into ...
