Français Anglais
Accueil Annuaire Plan du site
Accueil > Evenements > Séminaires
Séminaire d'équipe(s) Large-scale Heterogeneous DAta and Knowledge
DATA VERACITY ASSESSMENT: HOW A-PRIORI KNOWLEDGE EXPRESSED IN ONTOLOGY FACILITATES THE TASK
Valentina Beretta

15 June 2018, 14:00
Salle/Bat : 445/PCRI-N
Contact :

Activités de recherche : Integration of Data and Knowledge

Résumé :
Data veracity is one of the main issues regarding Web data. Automatically identifying reliable information is a critical task within a knowledge extraction process, in particular if resulting knowledge bases (KB) are devoted to be used in decision processes. Truth discovery models address it comparing information provided by multiple sources. They assume that true information is provided by reliable sources and, vice versa, reliable sources provide true information. In this way, they are able to identify which are the true claims among a set of conflicting ones. To the best of our knowledge, existing methods do not consider prior knowledge that can be extracted from an ontology. Based on the type of information that is considered, important suggestions that can facilitate the identification of true claims can be recognized. In our study, we analyze the impact of incorporating into truth discovery model the information associated with concepts' hierarchy and frequent patterns that are extracted from KB using association rule learning techniques. Empirical experiments on synthetic and real world datasets show advantages and disadvantages of proposed models.

Pour en savoir plus :
Séminaires
Langage d'icônes et visualisation d'ensembles : mé
Thursday 24 October 2019 - 14:30
Salle : 475 - PCRI-N
Jean-Baptiste Lamy .............................................

Matchings and related structures with Specified Co
Graph Theory
Thursday 17 October 2019 - 14:30
Salle : 445 - PCRI-N
Yannis Manoussakis .............................................

Conservation of structural long-range modules in R
Thursday 17 October 2019 - 14:30
Salle : 475 - PCRI-N
Vladimir Reinharz .............................................

Overcoming interference in the beeping communicati
Distributed algorithms
Friday 11 October 2019 - 14:30
Salle : 445 - PCRI-N
Fabien Dufoulon .............................................

Local checkability: a notion that started in the c
Distributed algorithms
Tuesday 08 October 2019 - 11:00
Salle : 465 - PCRI-N
Prof. Kutten Shay .............................................