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TISCO: Temporal Scoping of Facts

20 Pages Posted: 24 Sep 2018 First Look: Accepted

See all articles by Anisa Rula

Anisa Rula

Università degli Studi di Milano-Bicocca

Matteo Palmonari

Università degli Studi di Milano-Bicocca

Simone Rubinacci

University of Oxford - Department of Statistics

Axel-Cyrille Ngonga Ngomo

University of Paderborn - Data Science Group

Jens Lehmann

University of Leipzig - Agile Knowledge Engineering and Semantic Web (AKSW)

Andrea Maurino

Università degli Studi di Milano-Bicocca

Diego Esteves

University of Bonn

Abstract

Some facts in the Web of Data are only valid within a certain time interval. However, most of the knowledge bases available on the Web of Data do not provide temporal information explicitly. Hence, the relationship between facts and time intervals is often lost. A few solutions are proposed in this field. Most of them are concentrated more in extracting facts with time intervals rather than trying to map facts with time intervals. This paper studies the problem of determining the temporal scopes of facts, that is, deciding the time intervals in which the fact is valid. We propose a generic approach which addresses this problem by curating temporal information of facts in the knowledge bases. Our proposed framework, Temporal Information Scoping (TISCO) exploits evidence collected from the Web of Data and the Web. The evidence is combined within a three-step approach which comprises matching, selection and merging. This is the first work employing matching methods that consider both a single fact or a group of facts at a time. We evaluate our approach against a corpus of facts as input and different parameter settings for the underlying algorithms. Our results suggest that we can detect temporal information for facts from DBpedia with an f-measure of up to 80%.

Keywords: Temporal Information Extraction, Temporal Semantic Web, Temporal Scoping, Fact Checking

Suggested Citation

Rula, Anisa and Palmonari, Matteo and Rubinacci, Simone and Ngomo, Axel-Cyrille Ngonga and Lehmann, Jens and Maurino, Andrea and Esteves, Diego, TISCO: Temporal Scoping of Facts (Seeptember 24, 2018). Journal of Web Semantics First Look . Available at SSRN: https://ssrn.com/abstract=3254234 or http://dx.doi.org/10.2139/ssrn.3254234

Anisa Rula (Contact Author)

Università degli Studi di Milano-Bicocca ( email )

Piazza dell'Ateneo Nuovo, 1
Milano, Milan 20126
Italy

Matteo Palmonari

Università degli Studi di Milano-Bicocca ( email )

Piazza dell'Ateneo Nuovo, 1
Milano, Milan 20126
Italy

Simone Rubinacci

University of Oxford - Department of Statistics ( email )

24-29 St Giles
Oxford
United Kingdom

Axel-Cyrille Ngonga Ngomo

University of Paderborn - Data Science Group ( email )

Warburger Str. 100
Paderborn, D-33098
Germany

Jens Lehmann

University of Leipzig - Agile Knowledge Engineering and Semantic Web (AKSW) ( email )

Augustusplatz 10/11
Leipzig, 04109
Germany

Andrea Maurino

Università degli Studi di Milano-Bicocca ( email )

Piazza dell'Ateneo Nuovo, 1
Milano, Milan 20126
Italy

Diego Esteves

University of Bonn ( email )

Regina-Pacis-Weg 3
Postfach 2220
Bonn, D-53012
Germany

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