Dear Thanasis
Le 18.02.19 à 22:38, Athanasios Velios a écrit :
I like this scope note but my only concern is that an observer cannot tell when one phase ends and the next one begins. How can we explain that a phase is no longer?
The whole discussion concerning 'phases' (to avoid the unclear term of states), which reappearred in the last years because of the insistent questions of the (art) historians, is about distinguishing —if I got it right— between the phenomenal and the epistemological perspective. Martin's proposal about modelling phases of appearances, behaviors, etc. makes the point of identifying a phenomenal temporal entity with a specific identity as 'phase', observable in the evolution of an instance of E18 Physical Thing.
Your very relevant question challenges this attempt by implicitly suggesting that the absence of clear 'borders' (temporal limits with clear, substantial appearance) of the phase do not allow to truly distinguish one phase from the next one. One could say that a phase is just about our observation, therefore purely epistemological (in the sense of State – S16).
The case is clear if an event brings a substantial change in the 'phase' like going to the hairdresser and changing the color of my hair. The substance of phases, in the perspective of historians, is that appearances, behaviours, social qualities, etc. (which we will certainly will have to define more precisely, providing examples) change over time and are significantly (i.e. substantially) different. But this can also happen if phases change through a long lasting process with no clear temporal borders. They are objectively recognizable as such.
The issue would then seems to be: phenomenal and not epistemological if clear temporal limits ? But, to turn the issue around, also events have phenomenal substance even if, sometimes, they do not have clear, or knowable temporal limits, and we have conceptual tools to cope with this in the CRM. Wouldn't they be suitable to be applied to 'phases' ?
Indeed, if we agree about the existence of something substantial in phases (probably a substance different for different subclasses of Persistent items).
Both questions remain open in my perspective. But very relevant, at least for the historians.
All the best Francesco
All the best, Thanasis On 17/02/2019 19:44, Martin Doerr wrote:Dear All, Here a first attempt to define "phase": Exxx Phase Subclass of: E2 Temporal Entity Superclass of:E3 Condition State Scope note:This class comprises phases during the existence and evolution of an instance of E18 Physical Thing characterized by an appearance, constitution or a behavior distinct from that in other times of its existence, or distinct in the evolution of things of comparable kind, such as the nestling, fledgling, juvenile and adult forms of birds, but some kinds of phases may also be consequence of incidental changes such as accidents. Best, Martin -- ------------------------------------ Dr. Martin Doerr Honorary Head of the Center for Cultural Informatics Information Systems Laboratory Institute of Computer Science Foundation for Research and Technology - Hellas (FORTH) N.Plastira 100, Vassilika Vouton, GR70013 Heraklion,Crete,Greece Vox:+30(2810)391625 Email:mar...@ics.forth.gr Web-site:http://www.ics.forth.gr/isl _______________________________________________ Crm-sig mailing list Crm-sig@ics.forth.gr http://lists.ics.forth.gr/mailman/listinfo/crm-sigThis email and any attachments are intended solely for the addressee and may contain confidential information. If you are not the intended recipient of this email and/or its attachments you must not take any action based upon them and you must not copy or show them to anyone. Please send the email back to us and immediately and permanently delete it and its attachments. Where this email is unrelated to the business of University of the Arts London or of any of its group companies the opinions expressed in it are the opinions of the sender and do not necessarily constitute those of University of the Arts London (or the relevant group company). Where the sender's signature indicates that the email is sent on behalf of UAL Short Courses Limited the following also applies: UAL Short Courses Limited is a company registered in England and Wales under company number 02361261. Registered Office: University of the Arts London, 272 High Holborn, London WC1V 7EY _______________________________________________ Crm-sig mailing list Crm-sig@ics.forth.gr http://lists.ics.forth.gr/mailman/listinfo/crm-sig
