In this paper we consider the expansions of logics of a left-continuous t-norm with truth-constants from a subalgebra of the rational unit interval. From known results on standard semantics, we study completeness for these propositional logics with r...

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This paper aims at being a systematic investigation of different completeness properties of first-order predicate logics with truth-constants based on a large class of left-continuous t-norms (mainly continuous and weak nilpotent minimum t-norms). We...

The ReGreT system is a trust and reputation mechanism that uses, among other things, social information to improve the calculation of trust and reputation measures. Using a framework called Supp World designed to test these kind of complex models, we...

[EN] Camí de Can Grau is one of the most important Neolithic necropolises of the “Pit Burials” horizon (North-East of the Iberian Peninsula. Late fifth–early fourth millennia cal BC), because of its large number of graves. However, the number of buri...

This paper is a contribution to Mathematical fuzzy logic, in particular to the algebraic study of t-norm based fuzzy logics. In the general framework of propositional core and Δ-core fuzzy logics we consider three properties of completeness with resp...

Microaggregation is a well-known technique for data protection. It is usually operationally defined in a two-step process: (i) a large number of small clusters are built from data and (ii) data are replaced by cluster aggregates. In this work we stud...

The performance of Statistical Disclosure Control (SDC) methods for microdata (also called masking methods) is measured in terms of the utility and the disclosure risk associated to the protected microdata set. Empirical disclosure risk assessment ba...

Statistical data protection, also known as statistical disclosure control, is about methods that try to prevent published statistical information (tables, individual information) from disclosing the contribution of specific respondents, who may be in...

Statistical Disclosure Control (SDC) is an active research area in the recent years. The goal is to transform an original dataset X into a protected one X′, such that X′ does not reveal any relation between confidential and (quasi-)identifier attribu...

Microaggregation is a protection method used by statistical agencies to limit the disclosure risk of confidential information. Formally, microaggregation assigns each original datum to a small cluster and then replaces the original data with the cent...