Logo XCBR: Third Workshop on Case-based Reasoning for the explanation of intelligent systems

XCBR: Third Workshop on Case-based Reasoning for the explanation of intelligent systems

29th International Conference on Case-Based Reasoning September, 2021, in Salamanca, Spain

Call for Papers

Third Workshop on XCBR: Case-based Reasoning for the explanation of intelligent systems.

XCBR is a workshop aiming to provide a medium of exchange for information about trends, research issues and practical experiences in the use of Case-based Reasoning (CBR) methods for the inclusion of explanations to several AI techniques (including CBR itself).

The success of the intelligent systems has led to an explosion of the generation of new autonomous systems with new capabilities like perception, reasoning, decision support and self-actioning. Despite the tremendous benefits of these systems, they work as black-box systems and their effectiveness is limited by their inability to explain their decisions and actions to human users. The problem of explainability in Artificial Intelligence is not new but the rise of the autonomous intelligent systems has created the necessity to understand how these intelligent systems achieve a solution, make a prediction or a recommendation or reason to support a decision in order to increase users reliability in these systems. Additionally, the European Union included in their regulation about the protection of natural persons with regard to the processing of personal data a new directive about the need of explanations to ensure fair and transparent processing in automated decision-making systems.

The goal of Explainable Artificial Intelligence (XAI) is “to create a suite of new or modified machine learning techniques that produce explainable models that, when combined with effective explanation techniques, enable end users to understand, appropriately trust, and effectively manage the emerging generation of Artificial Intelligence (AI) systems”.

For this purpose, the XCBR workshop is intended to have a structure of activities that helps exchange of ideas and interaction, suited to highlight the main bottlenecks and challenges, as well as the more promising research lines, for CBR research related to the explanation of intelligent systems.

CBR systems have previous experiences in interactive explanations and in exploiting memory-based techniques to generate these explanations that can be successfully applied to the explanation of emerging AI and machine learning techniques.

Research contributions submitted to the workshop will be related to areas that include, but are not limited to, the following:

  • AI explanation methods using CBR: CBR explanations of ML techniques, planning, recommender systems, decision-making techniques.
  • CBR for explaining data obtained from sensor systems, Internet of Things, or wearables.
  • Explanations of complex CBR systems.
  • Hybrid CBR models to provide explanation capabilities.
  • Case-based explanation capabilities for different domains.
  • Lessons learned in XCBR investigations.
  • Challenge tasks for XCBR systems in novel AI techniques.
  • Measures and methods of evaluation for assessing case-based explanations.
  • User interaction for explanations.
  • The role of experience on explainability.


The Organizing Committee will select a subset of the submitted papers for oral presentation. As ICCBR 2020 will be virtual, ICCBR organizers will provide an online platform for the workshop. Please, refer to the conference website for details.
Participants must register free to join the workshop using the online form available in the conference website.

Workshop Schedule

The XCBR workshop will be held on September 13 with the following schedule:

15:15-15:25 Welcome and Presentation
15:25-16:10 Invited Talk by Mark Keane
16:10-17:50 1st session - 3 papers - Chair: Derek Bridge
16:10-16:35 Jesus M. Darias, Belen Diaz-Agudo and Juan A. Recio-Garcia
A Systematic Review on Model-agnostic XAI Libraries
16:35-17:00 Lawrence Gates and David Leake
Evaluating CBR Explanation Capabilities: Survey and Next Steps
17:00-17:25 Rosina Weber, Manil Shrestha and Adam Johs
Knowledge-based XAI through CBR: There is more to explanations than models can tell
17:25-17:45 BREAK
17:45-19:25 2nd session - 4 papers - Chair: Juan A. Recio García
17:45-18:10 Prateek Goel, Adam J. Johs, Manil Shrestha, and Rosina O. Weber
Explanation Container in Case-Based Biomedical Question-Answering
17:45-18:10 Nirmalie Wiratunga, Anjana Wijekoon, Ikechukwu Nkisi-Orji, Kyle Martin, Chamath Palihawadana and David Corsar
Actionable Feature Discovery in Counterfactuals using Feature Relevance Explainers
18:35-19:00 Arturo Acuaviva Huertos, Inmaculada Pérez Garbín, Belen Diaz-Agudo and Antonio A. Sánchez-Ruiz
Explanations on Smart Stores
19:00-19:25 Rosina Weber, Prateek Goel, Shideh Amiri and Gideon Simpson
Longitudinal Distance: Towards Accountable Instance Attribution

Each paper is allocated 25 minutes: 20 minutes for oral presentation + 5 minutes for Q&A.

Important Dates

July 2nd, 2021 Paper submission deadline
July 19th, 2021 Notification of acceptance
July 31st, 2021 Camera-ready submission
September 13th Workshop date


We invite submissions of two types:

  • Long research and application papers: a maximum of 12 pages describing original contributions.
  • Short position papers: a maximum of 6 pages describing new research ideas and partially developed frameworks

Papers must be submitted in electronic form as PDF. Springer LNCS is the format required for the final camera-ready copy. Authors' instructions along with LaTeX and Word macro files are available on the web at Springer.

Please submit your work via the EasyChair system using the following link and selecting track "Third Workshop on Case-Based Reasoning for the Explanation of Intelligent Systems":
Submit your paper

Here you can find the copyright form for the ICCBR workshops:
Copyright form

Program commitee

  • David Aha, Naval Research Laboratory, USA
  • David Leake, Indiana University, USA
  • Jose L. Jorro-Aragoneses, UCM, Madrid
  • Stelios Kapetanakis, University of Brighton, UK
  • Enric Plaza, IIIA, CSIC, Spain
  • Barry Smyth, University College Dublin, Ireland
  • Nirmalie Wiratunga, Robert Gordon University, UK
  • Mark Keane, University College Dublin, Ireland
  • Jakob Schönborn, Universität Hildesheim, Germany


Juan A. Recio García
Juan A. Recio García
University Complutense of Madrid, Spain
Belén Díaz Agudo
Belén Díaz Agudo
University Complutense of Madrid, Spain
Derek Bridge
Derek Bridge
University College Cork, Ireland