Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Spyratos, Nicolas"'
Autor:
Spyratos, Nicolas
We propose a novel database model whose basic structure is a labeled, directed, acyclic graph with a single root, in which the nodes represent the data sets of an application and the edges represent functional relationships among the data sets. We ca
Externí odkaz:
http://arxiv.org/abs/2305.13895
Autor:
Laurent, Dominique, Spyratos, Nicolas
In this paper, we study consistent query answering in tables with nulls and functional dependencies. Given such a table T, we consider the set Tuples of all tuples that can be built up from constants appearing in T, and we use set theoretic semantics
Externí odkaz:
http://arxiv.org/abs/2301.03668
Publikováno v:
IEEE 9th International Conference on Data Science and Advanced Analytics (DSAA), October 13-16, 2022, Shenzhen, China. IEEE, 2022. (Core A)
System Evolution Analytics on a system that evolves is a challenge because it makes a State Series SS = {S1, S2... SN} (i.e., a set of states ordered by time) with several inter-connected entities changing over time. We present stability characterist
Externí odkaz:
http://arxiv.org/abs/2210.15965
Autor:
Laurent, Dominique, Spyratos, Nicolas
In this paper, we introduce a novel approach to deductive databases meant to take into account the needs of current applications in the area of data integration. To this end, we extend the formalism of standard deductive databases to the context of F
Externí odkaz:
http://arxiv.org/abs/2108.02587
Autor:
Laurent, Dominique, Spyratos, Nicolas
In this paper we address the problem of handling inconsistencies in tables with missing values (also called nulls) and functional dependencies. Although the traditional view is that table instances must respect all functional dependencies imposed on
Externí odkaz:
http://arxiv.org/abs/2108.02581
We address the problem of integrating information coming from different sources. The information consists of facts that a central server collects and tries to combine using (a) a set of logical rules, i.e. a logic program, and (b) a hypothesis repres
Externí odkaz:
http://arxiv.org/abs/cs/0111059
Akademický článek
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Autor:
Laurent, Dominique, Spyratos, Nicolas
Publikováno v:
Journal of Logic and Computation
Journal of Logic and Computation, In press, ⟨10.1093/logcom/exac047⟩
Journal of Logic and Computation, In press, ⟨10.1093/logcom/exac047⟩
In this paper, we investigate rule semantics for deductive databases in the context of four-valued logic. In our approach, a database is a pair $\varDelta =(E,R)$, where $E$ is a set of pairs, each pair associating a ground fact with a truth value (t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76ec4a7f25e35ede3bc123cbd1f607ae
https://doi.org/10.1093/logcom/exac047
https://doi.org/10.1093/logcom/exac047
Publikováno v:
Digital Presentation and Preservation of Cultural and Scientific Heritage. (IV):33-39
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=268995
Publikováno v:
Digital Presentation and Preservation of Cultural and Scientific Heritage. (III):121-125
Externí odkaz:
https://www.ceeol.com/search/article-detail?id=67003