---
title: "40 Years of Research in Possibilistic Logic – a Survey"
authors:
  - "Didier Dubois"
  - "Henri Prade"
doi: "10.24963/ijcai.2025/1158"
url: "https://ijcai.org/proceedings/2025/1158"
pdf: "https://ijcai.org/proceedings/2025/1158.pdf"
venue: "Proceedings of the Thirty-Fourth International Joint Conference on Artificial Intelligence"
year: 2025
pages: "10427-10435"
track: "Survey Track"
keywords:
  - "Knowledge Representation and Reasoning: General"
  - "Knowledge Representation and Reasoning: KRR: Other"
  - "Uncertainty in AI: UAI: Nonprobabilistic models"
---

# 40 Years of Research in Possibilistic Logic – a Survey

Didier Dubois, Henri Prade

*Proceedings of the Thirty-Fourth International Joint Conference on Artificial Intelligence*, pages 10427-10435. DOI: [10.24963/ijcai.2025/1158](https://doi.org/10.24963/ijcai.2025/1158)

## Abstract

Possibilistic logic is forty years old. Possibilistic logic is a logic that handles classical logic formulas
associated with weights taking values in a linearly ordered set or more generally in a lattice. Over the
decades, possibilistic logic has undergone numerous developments at both theoretical and applied
levels. The ambition of this article is to review all these developments while exposing the main ideas
behind them.