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Inference of Shape Graphs for Graph Databases

Authors Benoît Groz , Aurélien Lemay , Sławek Staworko , Piotr Wieczorek

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Author Details

Benoît Groz
  • University Paris Sud, France
Aurélien Lemay
  • University of Lille, France
Sławek Staworko
  • University of Lille, France
Piotr Wieczorek
  • University of Wrocław, Poland

Funding

  • Wieczorek, Piotr: This author has been partially supported by Polish National Science Center grant NCN 2016/23/B/ST6/01438.

Cite AsGet BibTex

Benoît Groz, Aurélien Lemay, Sławek Staworko, and Piotr Wieczorek. Inference of Shape Graphs for Graph Databases. In 25th International Conference on Database Theory (ICDT 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 220, pp. 14:1-14:20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)
https://doi.org/10.4230/LIPIcs.ICDT.2022.14

Abstract

We investigate the problem of constructing a shape graph that describes the structure of a given graph database. We employ the framework of grammatical inference, where the objective is to find an inference algorithm that is both sound, i.e., always producing a schema that validates the input graph, and complete, i.e., able to produce any schema, within a given class of schemas, provided that a sufficiently informative input graph is presented. We identify a number of fundamental limitations that preclude feasible inference. We present inference algorithms based on natural approaches that allow to infer schemas that we argue to be of practical importance.

Subject Classification

ACM Subject Classification
  • Information systems → Graph-based database models
Keywords
  • RDF
  • Schema
  • Inference
  • Learning
  • Fitting
  • Minimality
  • Containment

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