| Vol-2972 urn:nbn:de:0074-2972-0 Copyright © 2021 for the individual papers by the papers' authors. Copyright © 2021 for the volume as a collection by its editors. This volume and its papers are published under the Creative Commons License Attribution 4.0 International (CC BY 4.0).

# FCA4AI 2021
What can FCA do for Artificial Intelligence 2021

### Proceedings of the 9th International Workshop "What can FCA do for Artificial Intelligence?"
co-located with the 30th International Joint Conference on Artificial Intelligence (IJCAI 2021)

### Montréal, Québec, Canada, August 21, 2021.

Edited by

### Sergei O. Kuznetsov *
Amedeo Napoli **
Sebastian Rudolph ***

* National Research University Higher School of Economics, Faculty of Computer Science, Moscow, Russia
** Université de Lorraine, CNRS, Inria, LORIA, F-54000, Nancy, France
*** Technische Universität, Dresden, Germany

## Table of Contents

- Preface

- Modelling Conceptual Schemata with Formal Concept Analysis 7-18
  Uta Priss
- Data Overview by Means of Delta-Classes of Equivalence. The Case of the Titanic Dataset 19-26
  Aleksey Buzmakov, Sergei O. Kuznetsov, Tatiana Makhalova, Amedeo Napoli
- FCA Went (Multi-)Relational, But Does It Make Any Difference? 27-38
  Mickaël Wajnberg, Petko Valtchev, Mario Lezoche, Alexandre Blondin-Massé, Hervé Panetto
- Likely-Occurring Itemsets for Pattern Mining 39-50
  Tatiana Makhalova, Sergei O. Kuznetsov, Amedeo Napoli
- Concept-based Chatbot for Interactive Query Refinement in Product Search 51-58
  Elizaveta Goncharova, Dmitry Ilvovsky, Boris Galitsky
- Variability Extraction from Simulator I/O Data Schemata in Agriculture Decision-Support Software 59-70
  Thomas Georges, Marianne Huchard, Mélanie König, Clémentine Nebut, Chouki Tibermacine
- Multimodal Clustering with Evolutionary Algorithms 71-86
  Mikhail Bogatyrev, Dmitry Orlov, Tatiana Shestaka
- On Suboptimality of GreConD for Boolean Matrix Factorisation of Contranominal Scales 87-98
  Dmitry Ignatov, Alexandra Yakovleva
- Summation of Decision Trees 99-104
  Egor Dudyrev, Sergei O. Kuznetsov
- Ensemble Techniques for Lazy Classification Based on Pattern Structures 105-112
  Ilya Semenkov, Sergei O. Kuznetsov
- A Concept of Self-Supervised Logical Rule Inference in Symbolic Classifications 113-124
  Xenia Naidenova, Vladimir Parkhomenko
- Non-Redundant Link Keys in RDF Data: Preliminary Steps 125-130
  Nacira Abbas, Alexandre Bazin, Jérôme David, Amedeo Napoli
- Formal Concept Analysis for Semantic Compression of Knowledge Graph Versions 131-138
  Damien Graux, Diego Collarana, Fabrizio Orlandi

2021-10-01: submitted by Sergei O. Kuznetsov, Amedeo Napoli, Sebastian Rudolph metadata incl. bibliographic data published under Creative Commons CC0
2021-10-08: published on CEUR Workshop Proceedings (CEUR-WS.org, ISSN 1613-0073) |valid HTML5|