Now showing items 1-6 of 6

• #### Challenge 1: Integrating knowledge, reasoning and learning ﻿

(Consejo Superior de Investigaciones Científicas (CSIC), 2021)
Part of book or chapter of book
Restricted access - publisher's policy
Knowledge, reasoning and learning (KRL) play a central role in artificial intelligence (AI) and are instrumental in solving many AI complex problems. In such problems we may have massive amounts of data and imprecise models, ...
• #### Fuzzy approximation relations, modal structures and possibilistic logic ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
Article
Open Access
The paper introduces a general axiomatic notion of approximation mapping, a mapping that associates to each crisp proposition p a fuzzy set representing "approximately p". It is shown how it can be obtained through fuzzy ...
• #### Lexicographic combinations of preference relations in the context of possibilistic decision theory ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 2006)
Article
Open Access
In Possibilistic Decision Theory (PDT), decisions are ranked by a pressimistic or by an optimistic qualitative criteria. The preference relations induced by these criteria have been axiomatized by corresponding sets of ...
• #### On fuzzy temporal constraint networks ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1994)
Article
Open Access
Temporal Constraint Networks are a well-defined, natural and efficient formalism for representing temporal knowledge based on metric temporal constraints. They support the representation of both metric and some qualitative ...
• #### Putting together Łukasiewicz and product logics ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1999)
Article
Open Access
In this paper we investigate a propositional fuzzy logical system $\L\Pi$ which contains the well-known \L ukasiewicz, Product and G\"{o}del fuzzy logics as sublogics. We define the corresponding algebraic structures, ...
• #### Using fuzzy similiarity relations to revise and update a knwoledge base ﻿

(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1996)
Article
Open Access
Similarity-based models were first used by Ruspini to give semantics to fuzzy logic ([7]). In these models, incomplete information is represented by an evidential set, i.e. a set of possible worlds that are compatible ...