Table of Contents

• Preface
  Summary: The proceedings contain 6 contributions that were accepted after peer review for presentation at the RealDataFCA’2021 workshop.

• How to provide light to COVID data by means of FCA 5-12
  Domingo López-Rodríguez, Pablo Cordero, Manuel Enciso, Ángel Mora
• Analyzing water monitoring data with RCA-based approaches 13-19
  Xavier Dolques, Agnès Braud, Corinne Grac, Florence Le Ber
• Explicit versus Tacit Knowledge in Duquenne-Guigues Basis of Implications: Preliminary Results 20-27
  Johanna Saoud, Alain Gutierrez, Marianne Huchard, Pascal Marnotte, Pierre Silvie, Pierre Martin
• Analyzing the composition of remedies in ancient pharmacopeias with FCA 28-35
  Agnès Braud, Xavier Dolques, Pierre Fechter, Nicolas Lachiche, Florence Le Ber, Véronique Pitchon
• Mining the Groceries Database using Triadic Concept Analysis 36-43
  Pedro H. B. Ruas, Rokia Missaoui, Mark A. J. Song, Léonard Kwuida
• Leveraging Formal Concept Analysis to Improve n-fold validation in Multilabel Classification 44-51
  Francisco J. Valverde-Albacete, Carmen Peláez-Moreno