{"type":"ScholarlyArticle","title":"The Hybrid Phenomena Theory","authors":[{"name":"Erling A. Woods","slug":"erling-a-woods","given":"Erling A.","family":"Woods","affiliation":""}],"abstract":"The Hybrid Phenomena Theory (HPT) is a framework for formalizing how dynamic state space models of physical systems are built from first principles. The HPT descends from the Qualitative Process Theory (QPT), [Forbus, 1984], from which it inherits basic concepts like views, phenomena and influences. Howe_ver, the HPT redefines some of these concepts m a more strict manner in order to represent knowledge of physics with the accuracy .needed .to develop full parametric models. Specifically, Influences may specify quantified non-linear functions of several variables. A mechanism denoted subsumption is introduced to ensure consistency in the emerging models when different simplifying assumptions are made . The HPT has been implemented in CLOS.","doi":null,"url":"https://ijcai.org/proceedings/1991/167","pdf":"https://ijcai.org/proceedings/1991/0167.pdf","markdown":"https://ijcai.org/proceedings/1991/167.md","bibtex":"https://ijcai.org/proceedings/1991/bibtex/167","volume":{"slug":"1991","title":"Proceedings of the Twelfth International Joint Conference on Artificial Intelligence","short_title":"IJCAI 1991","url":"https://ijcai.org/proceedings/1991/","year":1991,"location":"Sydney, New South Wales, Australia","dates":"24-30 August 1991","editors":"John Mylopoulos and Ray Reiter","isbn":"","publisher":"International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":"Qualitative Reasoning","track":"Qualitative Reasoning","number":167,"pages":{"first":1138,"last":1142},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}