Professor Nirmalie Wiratunga n.wiratunga@rgu.ac.uk
Associate Dean for Research
Actionable feature discovery in counterfactuals using feature relevance explainers.
Wiratunga, Nirmalie; Wijekoon, Anjana; Nkisi-Orji, Ikechukwu; Martin, Kyle; Palihawadana, Chamath; Corsar, David
Authors
Dr Anjana Wijekoon a.wijekoon1@rgu.ac.uk
Research Fellow B
Dr Ikechukwu Nkisi-Orji i.nkisi-orji@rgu.ac.uk
Chancellor's Fellow
Dr Kyle Martin k.martin3@rgu.ac.uk
Lecturer
Mr Chamath Palihawadana c.palihawadana@rgu.ac.uk
Research Assistant
Dr David Corsar d.corsar1@rgu.ac.uk
Senior Lecturer
Contributors
Hayley Borck
Editor
Viktor Eisenstadt
Editor
Antonio S�nchez-Ruiz
Editor
Michael Floyd
Editor
Abstract
Counterfactual explanations focus on 'actionable knowledge' to help end-users understand how a Machine Learning model outcome could be changed to a more desirable outcome. For this purpose a counterfactual explainer needs to be able to reason with similarity knowledge in order to discover input dependencies that relate to outcome changes. Identifying the minimum subset of feature changes to action a change in the decision is an interesting challenge for counterfactual explainers. In this paper we show how feature relevance based explainers (i.e. LIME, SHAP), can inform a counterfactual explainer to identify the minimum subset of 'actionable features'. We demonstrate our DisCERN (Discovering Counterfactual Explanations using Relevance Features from Neighbourhoods) algorithm on three datasets and compare against the widely used counterfactual approach DiCE. Our preliminary results show that DisCERN to be a viable strategy that should be adopted to minimise the actionable changes.
Citation
WIRATUNGA, N., WIJEKOON, A., NKISI-ORJI, I., MARTIN, K., PALIHAWADANA, C. and CORSAR, D. 2021. Actionable feature discovery in counterfactuals using feature relevance explainers. In Borck, H., Eisenstadt, V., Sánchez-Ruiz, A. and Floyd, M. (eds.) Workshop proceedings of the 29th International conference on case-based reasoning (ICCBR-WS 2021), 13-16 September 2021, [virtual event]. CEUR workshop proceedings, 3017. Aachen: CEUR-WS [online], pages 63-74. Available from: http://ceur-ws.org/Vol-3017/101.pdf
Conference Name | Workshops of the 29th International conference on case-based reasoning (ICCBR-WS 2021) |
---|---|
Conference Location | [virtual event] |
Start Date | Sep 13, 2021 |
End Date | Sep 16, 2021 |
Acceptance Date | Jun 11, 2021 |
Online Publication Date | Sep 16, 2021 |
Publication Date | Nov 24, 2021 |
Deposit Date | Jan 6, 2022 |
Publicly Available Date | Jan 6, 2022 |
Publisher | CEUR Workshop Proceedings |
Pages | 63-74 |
Series Title | CEUR workshop proceedings |
Series Number | 3017 |
Series ISSN | 1613-0073 |
Keywords | Explainable AI; Counterfactual; Feature relevance; Actionable features |
Public URL | https://rgu-repository.worktribe.com/output/1563535 |
Publisher URL | http://ceur-ws.org/Vol-3017/101.pdf |
Files
WIRATUNGA 2021 Actionable feature discovery (VOR v2)
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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