This book collects the scientific papers presented at the2nd Congress of the Italian Association for ArtificialIntelligence, held in Palermo in October 1991. It displaysthe state of the art of both Italian and European scientificresearch in AI. The book begins with an invited paper by W.Wahlster et al. The bulk of the book is then divided intofive parts on: - Knowledge representation (18 papers), -Knowledge acquisition (5 papers), - Natural language (5papers), - Perception and robotics (5 papers), -Architecture and technologies (5 papers). A sectioncontaining short papers completes the book. The high qualityof the papers reflects massive research activity mainlydevoted to the theoretical aspects of AI, but clearly aimedat consolidating the results already achieved. Severalcontributions are oriented to the technological aspects ofAI.

This book constitutes the refereed proceedings of the 12th International Conference of the Italian Association for Artificial Intelligence, AI*IA 2011, held in Palermo, Italy, in September 2011. The 31 revised full papers presented together with 3 invited talks and 13 posters were carefully reviewed and selected from 58 submissions. The papers are organized in topical sections on machine learning; distributed AI: robotics and MAS; theoretical issues: knowledge representation and reasoning; planning, cognitive modeling; natural language processing; and AI applications.

This book collects the scientific papers presented at the2nd Congress of the Italian Association for ArtificialIntelligence, held in Palermo in October 1991. It displaysthe state of the art of both Italian and European scientificresearch in AI. The book begins with an invited paper by W.Wahlster et al. The bulk of the book is then divided intofive parts on: - Knowledge representation (18 papers), -Knowledge acquisition (5 papers), - Natural language (5papers), - Perception and robotics (5 papers), -Architecture and technologies (5 papers). A sectioncontaining short papers completes the book. The high qualityof the papers reflects massive research activity mainlydevoted to the theoretical aspects of AI, but clearly aimedat consolidating the results already achieved. Severalcontributions are oriented to the technological aspects ofAI.

This book constitutes the refereed proceedings of the 12th International Conference of the Italian Association for Artificial Intelligence, AI*IA 2011, held in Palermo, Italy, in September 2011. The 31 revised full papers presented together with 3 invited talks and 13 posters were carefully reviewed and selected from 58 submissions. The papers are organized in topical sections on machine learning; distributed AI: robotics and MAS; theoretical issues: knowledge representation and reasoning; planning, cognitive modeling; natural language processing; and AI applications.