Search Results for author: Anastasia Dimou

Found 4 papers, 1 papers with code

TorchicTab: Semantic Table Annotation with Wikidata and Language Models

no code implementations SemTab@ISWC 2023 2023 Ioannis Dasoulas, Duo Yang, Xuemin Duan, Anastasia Dimou

The Semantic Web Challenge on Tabular Data to Knowledge Graph Matching (SemTab) was introduced in an effort to benchmark semantic table interpretation systems, by evaluating them over diverse datasets and tasks.

Columns Property Annotation Column Type Annotation +1

Shape Fragments

no code implementations22 Dec 2021 Thomas Delva, Anastasia Dimou, Maxime Jakubowski, Jan Van den Bussche

In this paper, (i) we define our extraction mechanism formally, building on recently proposed SHACL formalizations; (ii) we establish correctness properties, which relate shape fragments to notions of provenance for database queries; (iii) we compare shape fragments with SPARQL queries; (iv) we discuss implementation options; and (v) we present initial experiments demonstrating that shape fragments are a feasible new idea.

R2RML and RML Comparison for RDF Generation, their Rules Validation and Inconsistency Resolution

no code implementations13 May 2020 Anastasia Dimou

In this paper, an overview of the state of the art on knowledge graph generation is provided, with focus on the two prevalent mapping languages: the W3C recommended R2RML and its generalisation RML.

Graph Generation Knowledge Graphs

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