The two-volume set LNAI 17197 - 17198 constitutes the proceedings of the 25th EPIA Conference on Progress in Artificial Intelligence, EPIA 2026, held in Madeira, Portugal, during September 2 - 4, 2026.

The 64 full papers included in these proceedings were carefully reviewed and selected from 122 submissions. They were organized in topical sections as follows:

Part I : Knowledge Representation and Reasoning (KRR); Artificial Intelligence – Theory, Methods, and Application (AITMA); Artificial Intelligence for Time-dependent Data (AITD); Human-Centered AI (HCAI); Knowledge Discovery and Business Intelligence (KDBI); Artificial Intelligence for Industry and Society (AI4IS); Ambient Intelligence and Affective Environments (AmIA Environments).

Part II : Natural Language Processing, Text Mining and Applications (NLP-TeMA); Artificial Intelligence in Medicine (AIM); Ethics and Responsibility in AI (ERAI); Artificial Intelligence and Law (AIL); AI for Architecture, Engineering and Conservation (AI4AEC); Generative and Agentic Artificial Intelligence (GAAI); Artificial Intelligence in Transportation Systems (AITS).